TriumphTR6

Triumph TR6 USA

The carburetted TR6 that Triumph built for the United States and Canada, known by its model years, 1969 to 1976: two Zenith-Stromberg carburettors where Britain had injection, and federal safety and emission equipment that grew year by year. Americans wrote it TR-6; the TR Register calls it the TR6 Carb.

A dark green Triumph TR6 with black rubber bumper guards, the indicators below the bumper and red-band tyres, in an empty car park under oak trees.
Red-band tyres, rubber overriders (bumper guards) and indicators under a raised bumper: a US TR6 of the 1975 or 1976 model year in a Florida park in December 2024.Transpoecon, CC BY-SA 4.0

Most TR6s were built for North America, and none of them had injection. The car Triumph sent to the United States and Canada kept the TR250's engine, with two Zenith-Stromberg carburettors, and every one had left-hand drive. The first, CC25003L, was the first TR6 of all, built on 19 September 1968; the last, CF58328U, was the last TR6 of all, on 15 July 1976. Its years are model years, 1969 to 1976, and its commission numbers begin CC up to the 1972 model year and CF after it. The production readings on this page give its total.⁠1​2​3​4​5

Why it was different

America's emission rules, in force from 1968, were one reason. The carburetted engine the TR250 had used could be made to meet them more cheaply than the injected one, and Severson writes that Leyland never tried. Classic & Sports Car adds the dealers' side: distributors in America distrusted new technology that might be hard to service, and a buyer far from a Triumph dealer, it suggests, would have wanted carburettors that any local mechanic could work on.

Safety rules added more. The importer's launch notes of 1969 listed the American car's equipment: marker lamps at front and rear, an energy-absorbing steering column, padded sun visors, anti-burst door locks and brakes on two separate circuits, with head restraints built into the seats, on red-band radial tyres. Severson writes that roof-crush standards passed in 1971 would have effectively outlawed open cars, but a federal judge overturned the rule before it took effect. The federal bumper standard did take effect, in 1973, with a year's grace for sports cars: the TR6 got stronger mountings for its front bumper for the 1973 model year and, for the 1974 model year, rubber overriders.⁠6​7​3​8​9​2​10

A white Triumph TR6 in side profile with its hood folded, on a paved courtyard before a timber fence.
A US TR6 of the 1974 model year or later in profile, in Germany in April 2020, the rubber overrider on its front bumper and its red rear marker lamp American features, its middle Michelotti's and its ends Karmann's.Corvesprit, CC BY-SA 4.0
Looking down into a dark green Triumph TR6's engine bay: a six-cylinder engine with twin carburettors, an air pump and emission-control pipework.
Under the bonnet (hood) of a late US TR6: two Stromberg carburettors, an air pump and the pipework of exhaust-gas recirculation; its owner dates the engine to the last week of production, July 1976.Transpoecon, CC BY-SA 4.0

Contents

Model year by model year

Each model year brought changes of its own, and the TR Register's ranges of commission numbers follow the model years; other lists draw the breaks differently. The production years page takes each year in turn.

Model yearCommission numbersWhat changed
1969CC25001 to CC32143The launch car: carburettors, marker lamps, high-backed seats, red-band radials
1970CC50001 to CC67893, with 1971Column lock and column-mounted ignition switch; reclining seats; new steering wheel
1971As 1970Square reflectors under the tail lamps; stronger gearbox (transmission) internals from the middle of 1971
1972CC75001 to CC85737Lower compression; an exhaust with twin downpipes; new colours shared with the GT6; the suffix U in place of L
1973CF1 to CF11577The front spoiler, Union flag decals, new instruments and the J-type overdrive; air conditioning from the dealer
1974CF12501 to CF25777Rubber overriders front and rear; new door panels; an aerial built in
1974½CF27001 to CF31533Not known
1975CF35001 to CF39991A raised front bumper with the indicators beneath it, a heavier rear bumper, and air injection
1976CF50001 to CF58328Amber front indicator lenses; the last cars

For the 1973 model year the importer offered air conditioning, made in America and fitted by the dealer with a factory warranty, and was proud of it:

Its addition to the option list makes the 1973 TR-6 the only high performance, convertible sports car priced under $4,000 available with air conditioning.

British Leyland Motors Inc., Triumph Newsletter, January 1973

Through all these years overdrive, from the 1973 model year the J-type working on third and top, stayed an extra-cost option on American cars.⁠2​4​11​12​13​14​9​15​10

Two Triumph TR6s on a gravel drive among trees: a dark blue one with a plain chrome bumper and a green one with black rubber bumper guards.
Left, a TR6 with a plain chrome bumper; right, one with rubber overriders: the photographer titles them a 1973 and a 1974 car (July 2020).Funkadlik3, CC BY-SA 4.0
A red Triumph TR6 with black rubber bumper guards and a front spoiler, parked below a stone wall beside a white saloon.
A US-specification TR6 with the rubber overriders and front spoiler, its bumper still at the original height: a car from before the 1975 change.Phil Sangwell from United Kingdom, CC BY 2.0
A blue Triumph TR6 with black rubber bumper guards and the indicators below the bumper, on a sunny show lawn.
The indicators below the raised bumper of the 1975 and 1976 model years, on a TR6 at the Hudson British Car Show, Quebec, in May 2012; Commons files it as a 1976 car.Bull-Doser, Public domain

Contents

California

Severson writes that California's stricter emission standards limited the cars sold there to a single carburettor. The importer's own specification for the 1974 model year lists two Strombergs and gives no exception for California, and no source read gives a California specification, so the claim stays his. California's rules were also, Classic & Sports Car writes, one reason why the injected engine never went on sale in America.⁠6​9​7

Three Triumph TR6s seen from behind in a car park, palm trees and a car meet beyond, the nearest with a Union flag decal and a luggage rack.
Three TR6s at a car meet in Aliso Viejo, California, in July 2015; nothing in the picture shows their specification.poqua, CC BY-SA 2.0

Contents

The US car on the road

The importer's owners' newsletter printed what owners found. One wrote in 1974 that a TR-6 of the 1973 model year, without overdrive, used about 15 litres per 100 km (15 to 16 miles per US gallon) in town and 10 to 11 (22 to 24) on trips; another, in 1975, reported a TR6 almost trouble-free for about 217,000 km (135,000 miles); and in 1976 a third wrote that a TR-6 of the 1974 model year had run well in Alaska down to 65 degrees below zero.

An American-specification TR6 built in May 1976, with its federal bumpers, driven top-down on New England roads.Video: 1976 Triumph TR6 - The Inline 6 British Classic You can AFFORD! (POV Binaural Audio), Tedward, 2021

In the showrooms its rival was the Datsun 240Z, a coupé new in 1969, which outran the TR6 in C Production; among open cars, Moss Motoring names the Jensen-Healey, imported from 1973, as the nearest, and the rivals page compares them. The TR7 was launched in America in January 1975 and sold beside the TR6, and the newer car soon sold more: in June 1976 American dealers delivered more than twice as many TR7s as TR6s, by the importer's figures. What the American magazines made of the TR6 is on road tests.⁠16​17​18​6​19​7​20​21​22

A blue Triumph TR6 with a matching hardtop and a luggage rack, driving away along a city road.
A US TR6 with the factory hardtop on a city road in June 2013, of the 1974 to 1976 model years by its rear bumper's rubber overriders; its photographer calls it a 1975 car.Mr.choppers, CC BY-SA 3.0
A yellow Triumph TR6 with black rubber bumper guards, parked on the verge of a rural road beside woodland.
Parked on a country road in Alberta, Canada, in July 2016: a US TR6 whose raised front bumper and rubber overriders date it to the 1975 or 1976 model year.dave_7 from Canada, CC BY 2.0

Contents

Specification: US TR6 (CC)

Production

Sources for Production, US TR6 (CC)

Price new
Several figures in print.Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠6; Jan P. Norbye and Jim Dunne, "The $3,000 Roadsters", Popular Science, vol. 195 no. 2, Aug 1969, pp. 96–101⁠23; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Built
Several figures in print.TR Register, "Buyer Beware: TR6" (2 pp. PDF leaflet)⁠2; Vintage Triumph Register, "TR6" (history, year-by-year changes, US production table, buyer's guide)⁠11; Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313)⁠4
Designers
Several figures in print.Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10; Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠6; Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313)⁠4; Revington TR, "Technical Specification Change Points" (TR6)⁠24
Built at
Several figures in print.Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Price new$3,275

Price new, US TR6 (CC)

Several figures in print.

  • $3,275Good sources agree: Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012, at the port of entry, at launch (1969)⁠6; Jan P. Norbye and Jim Dunne, "The $3,000 Roadsters", Popular Science, vol. 195 no. 2, Aug 1969, pp. 96–101, basic, a US TR6 in the August 1969 group test⁠23
  • $3,375Not yet confirmed: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), 'Basic Price TR6 Carb', undated⁠1
Built1969-1972 model years (CC25001-CC85737)

Built, US TR6 (CC)

Several figures in print.

  • 1969-1972 model years (CC25001-CC85737)Good sources agree: TR Register, "Buyer Beware: TR6" (2 pp. PDF leaflet), 'Carburettor cars 1969 model CC25001 to CC32143 … 1972 model CC75001 to CC85737'⁠2
  • 1969-1972 model years (CC25000-CC85737)Good sources agree: Vintage Triumph Register, "TR6" (history, year-by-year changes, US production table, buyer's guide), US model-year table, 1969 to 1972⁠11
  • 19 Sep 1968 - 5 Oct 1972 (CC25003L - CC85737U)One good source: Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313), build dates: 'CC25003 L First production car (built 19th Sept 68)'; 'CC85737 U Last production car (built 5th Oct 72)'⁠4
  • Aug 1972 (last CC)Not yet confirmed: TR Register, "Buyer Beware: TR6" (2 pp. PDF leaflet), 'the last car being built in August 1972'⁠2
DesignersKarmann (front and rear restyle; press tools)

Designers, US TR6 (CC)

Several figures in print.

  • Karmann (front and rear restyle; press tools)Good sources agree: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF), Karmann's clay model accepted by Standard-Triumph; Karmann also supplied the press tools ('Presswerkzeuge')⁠10
  • Karmann (restyle)Good sources agree: Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012, the TR6's restyle by Karmann; Severson names the stylist as Gerhard Giesecke⁠6
  • Giovanni Michelotti (the TR4 body whose centre section was kept)Good sources agree: Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313), Robson's foreword: 'between them, Michelotti and Karmann had transformed the looks of the classic TR'⁠4
  • Giovanni Michelotti (the retained centre section)Good sources agree: Revington TR, "Technical Specification Change Points" (TR6), Karmann restyled the front and rear, 'Michelotti being busy'; doors, windscreen frame, floor pans, sills and bulkhead kept⁠24
Built atCanley, Coventry

Built at, US TR6 (CC)

Several figures in print.

  • Canley, CoventryOne good source: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF), final assembly⁠10
  • Speke, Liverpool (bodies)One good source: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10

Engine

Sources for Engine, US TR6 (CC)

Capacity
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Engine position
One good source.Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313)⁠4
Block
One good source.Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Cylinder head
One good source.Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Valve gear
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Bore × stroke
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Compression ratio
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3; Vintage Triumph Register, "TR6" (history, year-by-year changes, US production table, buyer's guide)⁠11; Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, November–December 1971, Nov–Dec 1971 (vol. 17 nos. 11–12)⁠13; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Fuel system
Several figures in print.TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Carburettors
Several figures in print.Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Aspiration
One good source.TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Ignition
One good source.Settings for every TR6. Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313)⁠4
Cycle
One good source.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3
Lubrication
One good source.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3
Capacity152 cu in (2,498 cc)

Capacity, US TR6 (CC)

Several figures in print.

  • 152 cu in (2,498 cc)Good sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1), '6 cylinder, 152 cu. in. (2498 cc)'⁠3
  • 2498 ccGood sources agree: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), '6 Cylinder 74.7mm x 95mm 2498cc engine'⁠1
Engine positionFront
Blockcast iron
Cylinder headcast iron
Valve gearin line, overhead valve

Valve gear, US TR6 (CC)

Several figures in print.

  • in line, overhead valveGood sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1), 'In line, overhead valve'⁠3
  • OHV, two valves per cylinderGood sources agree: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Bore × stroke2.94 x 3.74 in (74.7 x 95 mm)

Bore × stroke, US TR6 (CC)

Several figures in print.

  • 2.94 x 3.74 in (74.7 x 95 mm)Good sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1), 'Bore 2.94 in. (74.7 mm). Stroke 3.74 in. (95 mm)'⁠3
  • 74.7 x 95 mmGood sources agree: TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Compression ratio8.5:1

Compression ratio, US TR6 (CC)

Several figures in print.

  • 8.5:1Good sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1), 1969 specification ('Compression ratio 8.5:1'); to the 1971 model year⁠3
  • 8.5:1 to 7.75:1Good sources agree: Vintage Triumph Register, "TR6" (history, year-by-year changes, US production table, buyer's guide), '72: 'Compression dropped from 8.5:1 to 7.75:1'⁠11
  • 7.75:1Good sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, November–December 1971, Nov–Dec 1971 (vol. 17 nos. 11–12), 1972 model year: 'Compression is down to 7.75 to 1 with no loss in brake horsepower'⁠13; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF), 1972 and 1973 model years⁠10
Fuel systemtwin Stromberg 175CD carburettors

Fuel system, US TR6 (CC)

Several figures in print.

  • twin Stromberg 175CD carburettorsGood sources agree: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), 'Twin Stromberg 175CD Carburettors for US and other export markets'⁠1
  • two Zenith-Stromberg 175 CD2 carburettorsGood sources agree: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
CarburettorsZenith-Stromberg

Carburettors, US TR6 (CC)

Several figures in print.

  • Zenith-StrombergGood sources agree: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF), two 175 CD2⁠10
  • StrombergGood sources agree: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), 'Twin Stromberg 175CD'⁠1
AspirationNaturally Aspirated
Ignitioncoil and distributor (contact breaker)
CycleFour-stroke
LubricationWet Sump

Performance

Sources for Performance, US TR6 (CC)

Power
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1; Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠6; Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, November–December 1971, Nov–Dec 1971 (vol. 17 nos. 11–12)⁠13; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Torque
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3; Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠6; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10; Wikipedia (EN), "Triumph TR6", 2026⁠25
Top speed
Several figures in print.TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1; Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠6
0–60 mph
Several figures in print.TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1; Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠6; Jan P. Norbye and Jim Dunne, "The $3,000 Roadsters", Popular Science, vol. 195 no. 2, Aug 1969, pp. 96–101⁠23
Standing start
One good source.Standing quarter mile; the TR Register's table, CC column ('ROAD'). TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Power104 bhp

Power, US TR6 (CC)

Several figures in print.

  • 104 bhpGood sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1), at 4,500 rpm, 1969 specification; basis not printed⁠3; TR Register, "Triumph TR6 Buyers Guide" (facts sheet), 'CC Series 104bhp @ 4500rpm'⁠1; Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012, net: 'an unchanged net output of 104 hp (78 kW)'⁠6
  • 106 bhpGood sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, November–December 1971, Nov–Dec 1971 (vol. 17 nos. 11–12), SAE at 4,900 rpm, 1972 model year from CC75001 ('SAE 106@ 4900RPM')⁠13; Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012, net: 'Net power rose from 104 to to 106 hp (78 to 79 kW) in 1972'⁠6
  • 106 PSGood sources agree: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF), SAE PS, at 4,900 rpm, 1968 to 1971⁠10
  • 112 bhpOne good source: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, November–December 1971, Nov–Dec 1971 (vol. 17 nos. 11–12), at 5,000 rpm; the 1972 table's 'BHP' row, basis not stated⁠13
Torque1710 lb in

Torque, US TR6 (CC)

Several figures in print.

  • 1710 lb inGood sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1), at 3,000 rpm (143 lb ft), 1969 specification⁠3; Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012, net: '143 lb-ft (194 N-m)'⁠6; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF), at 3,000 rpm; printed '143 Nm bei 3.000 U/min' (a unit error: lb ft meant)⁠10; Wikipedia (EN), "Triumph TR6", 2026, at 3,500 rpm, citing Piggott (1991) p. 64⁠25
  • 133 lb ftOne good source: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF), 1972-76; printed '133 Nm bei 3.000 U/min' (a unit error)⁠10
Top speed111 mph

Top speed, US TR6 (CC)

Several figures in print.

  • 111 mphOne good source: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), mean maximum; the TR Register's table, column 'TR6 CARB (CC) (ROAD)' (the test is not named further)⁠1
  • 107-110 mphNot yet confirmed: Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012, 'top speed for carbureted cars was again in the 107-110 mph range'⁠6
0–60 mph10.7 s

0–60 mph, US TR6 (CC)

Several figures in print.

  • 10.7 sOne good source: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), the TR Register's table, column 'TR6 CARB (CC) (ROAD)'⁠1
  • just under 11 sOne good source: Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012, 'Road & Track's 1969 TR6 test car … reaching 60 mph (97 km/h) in just under 11 seconds'⁠6
  • 13.4 sOne good source: Jan P. Norbye and Jim Dunne, "The $3,000 Roadsters", Popular Science, vol. 195 no. 2, Aug 1969, pp. 96–101, a US TR6, August 1969 group test⁠23
Standing start18.5 s

Running gear

Sources for Running gear, US TR6 (CC)

Steering
Good sources agree.'Triumph rack and pinion'; 3½ turns lock to lock. Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Gears
Good sources agree.'4 forward speed all synchromesh gear box'. Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Overdrive
Good sources agree.Optional: 'Laycock de Normanville overdrive. Operated on 2nd, 3rd, and top gears'. Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3; TR Register, "Buyer Beware: TR6" (2 pp. PDF leaflet)⁠2
Front brakes
One good source.'10⅞ in caliper operated discs - front'; 'Vacuum power independent system'. Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3
Rear brakes
One good source.'9 in drums - rear'. Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3
Front suspension
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Rear suspension
Several figures in print.TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1; Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3
Tyres
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Wheels
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3; Vintage Triumph Register, "TR6" (history, year-by-year changes, US production table, buyer's guide)⁠11
Final drive
One good source.Vintage Triumph Register, "TR6" (history, year-by-year changes, US production table, buyer's guide)⁠11
Clutch
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Starter
One good source.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3
Steeringrack and pinion
Gears4
Overdrive3
Front brakesDisc, 10⅞ in
Rear brakesDrum, 9 in
Front suspensionindependent, coil springs, telescopic dampers, anti-roll bar

Front suspension, US TR6 (CC)

Several figures in print.

  • independent, coil springs, telescopic dampers, anti-roll barGood sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1), 'Low periodicity independent system incorporating anti-roll bar. Coil springs and telescopic dampers'⁠3
  • unequal-length double wishbones, coil springs, telescopic dampersGood sources agree: TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Rear suspensionsemi-trailing arms, coil springs, lever arm dampers

Rear suspension, US TR6 (CC)

Several figures in print.

  • semi-trailing arms, coil springs, lever arm dampersGood sources agree: TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
  • semi-trailing arms, coil springs, piston type dampersGood sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1), 'Semi trailing arm independent with coil springs and piston type dampers'⁠3
Tyres185 SR 15

Tyres, US TR6 (CC)

Several figures in print.

  • 185 SR 15Good sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1), 'Radial ply red band tires - Goodyear 185 SR 15'⁠3
  • 185 - 15Good sources agree: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF), US market⁠10
Wheels15 x 5½ steel disc

Wheels, US TR6 (CC)

Several figures in print.

  • 15 x 5½ steel discGood sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1), 'Steel disc type 15 in x 5½ in wheels'⁠3
  • 5½ inGood sources agree: Vintage Triumph Register, "TR6" (history, year-by-year changes, US production table, buyer's guide), '5 1/2 in wheels replace the 5 in version of TR4a'⁠11
Final driveShaft
Clutchdiaphragm, 8½ in, hydraulic

Clutch, US TR6 (CC)

Several figures in print.

  • diaphragm, 8½ in, hydraulicGood sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1), 'Diaphragm type 8½ in hydraulically operated clutch'⁠3
  • single dry plate, hydraulicGood sources agree: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
StarterElectric

Body and chassis

Sources for Body and chassis, US TR6 (CC)

Chassis
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Chassischannel steel with cruciform bracing

Chassis, US TR6 (CC)

Several figures in print.

  • channel steel with cruciform bracingGood sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1), 'CHASSIS Channel steel with cruciform bracing'⁠3
  • box frame of channel sections with an X braceGood sources agree: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10

Dimensions and weight

Sources for Dimensions and weight, US TR6 (CC)

Length
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Width
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Height
Good sources agree.'50 in' top up (46 in top down). Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Kerb weight
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Wheelbase
Good sources agree.'88 in' (2.24 m). Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Ground clearance
Good sources agree.'6 in'. Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Fuel tank
Good sources disagree.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠3; Vintage Triumph Register, "TR6" (history, year-by-year changes, US production table, buyer's guide)⁠11; Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313)⁠4
Length155 in

Length, US TR6 (CC)

Several figures in print.

  • 155 inGood sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1), '155 in' (3.94 m), 1969⁠3; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF), carburetted car⁠10
  • 3950 mmNot yet confirmed: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), 155.5 in; basis not stated⁠1
Width58 in

Width, US TR6 (CC)

Several figures in print.

  • 58 inGood sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1), '58 in' (1.47 m)⁠3; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF), carburetted car⁠10
  • 1550 mmNot yet confirmed: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), 61.0 in; basis not stated⁠1
Height50 in
Kerb weight2268 lb

Kerb weight, US TR6 (CC)

Several figures in print.

  • 2268 lbOne good source: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1), 'with fuel and water etc.' (1,034 kg), 1969⁠3
  • 2156 lbOne good source: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1), 983 kg, 1969; basis not stated⁠3
  • 1090 kgOne good source: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF), unladen; carburetted car, to the 1974 model year⁠10
  • 1130 kgOne good source: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), 2,491 lb; scope not stated⁠1
Wheelbase88 in
Ground clearance6 in
Fuel tank51 L

Fuel tank, US TR6 (CC)

Good sources disagree.

  • 51 LOne good source: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1), '11¼ imp. gals., 13½ gals.', 51 litres, 1969⁠3
  • 10.25 galDisputed: Vintage Triumph Register, "TR6" (history, year-by-year changes, US production table, buyer's guide), '72: 'Gas tank capacity reduced to 10.25 gallons' (unit not stated)⁠11
  • 50 LDisputed: Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313), '11 gal (50 L)', approximate, every TR6⁠4

Contents

Specification: US TR6

Production

Sources for Production, US TR6

Built
One good source.'TR6 Carb manufactured September 1968 to July 1976'. TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
BuiltSep 1968 - Jul 1976

Performance

Sources for Performance, US TR6

0–60 mph
One good source.Road & Track's own table of its 1972-73 test figures ('TR-6'); model year of the car not stated. Road & Track, Road & Track, June 1974, Jun 1974⁠26
0–60 mph10.7 s

Contents

Specification: US TR6 (CF)

Production

Sources for Production, US TR6 (CF)

Price new
One good source.1973 TR-6 at the ports of entry. Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1973, Jan 1973 (vol. 19 no. 1)⁠14
Built
Several figures in print.TR Register, "Buyer Beware: TR6" (2 pp. PDF leaflet)⁠2; Vintage Triumph Register, "TR6" (history, year-by-year changes, US production table, buyer's guide)⁠11; Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313)⁠4
Designers
Several figures in print.Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10; Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠6; Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313)⁠4; Revington TR, "Technical Specification Change Points" (TR6)⁠24
Built at
Several figures in print.Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10; British Motor Museum, "Factor us in: Standard Triumph factory at Canley"⁠27
Price new$3,980
Built1973-1976 model years (CF1-CF58328)

Built, US TR6 (CF)

Several figures in print.

  • 1973-1976 model years (CF1-CF58328)Good sources agree: TR Register, "Buyer Beware: TR6" (2 pp. PDF leaflet), 'Carburettor cars 1973 model CF1 to CF11577 … 1976 model CF50001 to CF58328. The last car being built in July 1976'⁠2
  • 1973-1976 model years (CF1U-CF58328U)Good sources agree: Vintage Triumph Register, "TR6" (history, year-by-year changes, US production table, buyer's guide), US model-year table, 1973 to 1976⁠11
  • 11 Sep 1972 - 15 Jul 1976 (CF1U - CF58328U)Good sources agree: Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313), build dates: 'CF1 U First production car (built 11th Sept 72)'; 'CF58328 U Last ever production TR6 (built 15th Jul 76)'⁠4
DesignersKarmann (front and rear restyle; press tools)

Designers, US TR6 (CF)

Several figures in print.

  • Karmann (front and rear restyle; press tools)Good sources agree: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF), Karmann's clay model accepted by Standard-Triumph; Karmann also supplied the press tools ('Presswerkzeuge')⁠10
  • Karmann (restyle)Good sources agree: Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012, the TR6's restyle by Karmann; Severson names the stylist as Gerhard Giesecke⁠6
  • Giovanni Michelotti (the TR4 body whose centre section was kept)Good sources agree: Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313), Robson's foreword: 'between them, Michelotti and Karmann had transformed the looks of the classic TR'⁠4
  • Giovanni Michelotti (the retained centre section)Good sources agree: Revington TR, "Technical Specification Change Points" (TR6), Karmann restyled the front and rear, 'Michelotti being busy'; doors, windscreen frame, floor pans, sills and bulkhead kept⁠24
Built atCanley, Coventry

Built at, US TR6 (CF)

Several figures in print.

  • Canley, CoventryGood sources agree: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF), final assembly⁠10
  • Canley (the last TR6, a CF car, photographed there in 1976)Good sources agree: British Motor Museum, "Factor us in: Standard Triumph factory at Canley", photograph of the last TR6 at Canley⁠27
  • Speke, Liverpool (bodies)One good source: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10

Engine

Sources for Engine, US TR6 (CF)

Capacity
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Engine position
One good source.Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313)⁠4
Block
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Cylinder head
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Valve gear
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Bore × stroke
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Compression ratio
Several figures in print.Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10; Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9
Fuel system
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Carburettors
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Aspiration
One good source.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9
Ignition
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9; Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313)⁠4
Cycle
One good source.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9
Lubrication
One good source.Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313)⁠4
Capacity152 cubic ins. (2,498 cc)

Capacity, US TR6 (CF)

Several figures in print.

  • 152 cubic ins. (2,498 cc)Good sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973, 1974 specification⁠9
  • 2498 ccGood sources agree: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), '6 Cylinder 74.7mm x 95mm 2498cc engine'⁠1
Engine positionFront
Blockchrome cast iron

Block, US TR6 (CF)

Several figures in print.

  • chrome cast ironGood sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973, 'chrome cast iron block and cylinder head'⁠9
  • cast ironGood sources agree: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Cylinder headchrome cast iron

Cylinder head, US TR6 (CF)

Several figures in print.

  • chrome cast ironGood sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973, 'chrome cast iron block and cylinder head'⁠9
  • cast ironGood sources agree: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Valve gearpushrod operated overhead valves

Valve gear, US TR6 (CF)

Several figures in print.

  • pushrod operated overhead valvesGood sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973, 'pushrod operated overhead valves; chain-driven camshaft'⁠9
  • OHV, two valves per cylinderGood sources agree: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Bore × stroke2.94 x 3.74 in

Bore × stroke, US TR6 (CF)

Several figures in print.

  • 2.94 x 3.74 inGood sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973, '2.94 by 3.74 ins.'⁠9
  • 74.7 x 95 mmGood sources agree: TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Compression ratio7.75:1

Compression ratio, US TR6 (CF)

Several figures in print.

  • 7.75:1One good source: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF), the 1973 model year⁠10
  • 7.5:1Good sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973, 1974 specification: '7.5 to 1'⁠9; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF), US, after 1973⁠10
Fuel systemtwo Stromberg 175 CDSEV carburettors

Fuel system, US TR6 (CF)

Several figures in print.

  • two Stromberg 175 CDSEV carburettorsGood sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973, 1974 specification⁠9
  • twin Stromberg 175CD carburettorsGood sources agree: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), 'Twin Stromberg 175CD Carburettors for US and other export markets'⁠1
CarburettorsStromberg (two 175 CDSEV)

Carburettors, US TR6 (CF)

Several figures in print.

  • Stromberg (two 175 CDSEV)Good sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973, 1974 specification⁠9
  • Zenith-StrombergGood sources agree: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF), two 175 CD2⁠10
AspirationNaturally Aspirated
IgnitionLucas 15C6 6-volt coil, Lucas distributor

Ignition, US TR6 (CF)

Several figures in print.

  • Lucas 15C6 6-volt coil, Lucas distributorGood sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973, 1974 specification⁠9
  • coil and distributor (contact breaker)Good sources agree: Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313), settings for every TR6⁠4
CycleFour-stroke
LubricationWet Sump

Performance

Sources for Performance, US TR6 (CF)

Power
Good sources agree.'106 SAE net' (the 1973 announcement). Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1973, Jan 1973 (vol. 19 no. 1)⁠14; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Torque
Good sources agree.SAE net at 3,000 rpm ('133 lb.-ft. of torque (SAE net) at 3,000 rpm'). Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1973, Jan 1973 (vol. 19 no. 1)⁠14; Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠6
Top speed
One good source.Triumph's claim (the TR Register's table, column 'TR6 CARB (CF) (TRIUMPH)'). TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
0–60 mph
One good source.Triumph's claim (the TR Register's table, CF column). TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Standing start
One good source.Standing quarter mile, Triumph's claim (the TR Register's table, CF column). TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Power106 bhp
Torque133 lb ft
Top speed111 mph
0–60 mph11.5 s
Standing start18.1 s

Running gear

Sources for Running gear, US TR6 (CF)

Steering
Good sources agree.'rack and pinion, 3½ turns lock-to-lock, 34-ft. turning circle'. Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Gears
Good sources agree.'full-synchromesh, 4-speed'. Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Overdrive
Good sources agree.'Laycock J type operating on 4th and 3rd'; optional, $197 in 1974. Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9; TR Register, "Buyer Beware: TR6" (2 pp. PDF leaflet)⁠2
Front brakes
One good source.'power assisted with boost ratio of 2.2:1, 10.87-ins. discs on front'. Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9
Rear brakes
One good source.'9x1.75 ins. drums on rear'. Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9
Front suspension
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Rear suspension
Good sources agree.TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Tyres
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Wheels
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Final drive
One good source.Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313)⁠4
Clutch
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Starter
One good source.Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313)⁠4
Steeringrack and pinion
Gears4
Overdrive2
Front brakesDisc, 10.87 in
Rear brakesDrum, 9 x 1.75 in
Front suspensionindependent with upper and lower wishbones, coil springs, telescopic shocks, anti-sway bar

Front suspension, US TR6 (CF)

Several figures in print.

  • independent with upper and lower wishbones, coil springs, telescopic shocks, anti-sway barGood sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9
  • unequal-length double wishbones, coil springs, telescopic dampersGood sources agree: TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Rear suspensionsemi-trailing arms, coil springs, lever arm dampers
Tyres185 SR 15

Tyres, US TR6 (CF)

Several figures in print.

  • 185 SR 15Good sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973, '185 SR 15 tubeless radialplys'⁠9
  • 185 - 15Good sources agree: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF), US market⁠10
Wheels15 x 5½J steel disc

Wheels, US TR6 (CF)

Several figures in print.

  • 15 x 5½J steel discGood sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973, '15-ins., 5½ J steel discs'⁠9
  • pressed steel disc, 5.5 x 15Good sources agree: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), printed 'Pressed steel disc with 5.5 x 15 tyres'⁠1
Final driveShaft
Clutch8.5 in single dry plate

Clutch, US TR6 (CF)

Several figures in print.

  • 8.5 in single dry plateGood sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973, '8.5-ins. single dry plate'⁠9
  • single dry plate, hydraulicGood sources agree: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
StarterElectric

Body and chassis

Sources for Body and chassis, US TR6 (CF)

Chassis
One good source.Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Chassisbox frame of channel sections with an X brace

Dimensions and weight

Sources for Dimensions and weight, US TR6 (CF)

Length
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9; Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠6; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Width
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Height
Several figures in print.Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1; Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9
Kerb weight
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9; Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠6; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Wheelbase
Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1
Ground clearance
One good source.Carburetted car. Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10
Fuel tank
Good sources disagree.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973⁠9; Vintage Triumph Register, "TR6" (history, year-by-year changes, US production table, buyer's guide)⁠11
Length162.1 in

Length, US TR6 (CF)

Several figures in print.

  • 162.1 inGood sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973, 1974 specification, with the bumper guards ('overall length, 162.1-ins.')⁠9; Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012, 'the bulbous overriders … increasing overall length to 162.1 inches (4,117 mm)', a 1975 or 1976 car⁠6; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF), US cars, 1973 and 1974 model years⁠10
  • 415.5 cmOne good source: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF), US cars, 1975 and 1976 model years⁠10
Width58 in

Width, US TR6 (CF)

Several figures in print.

  • 58 inGood sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973, 1974 specification ('width, 58-ins.')⁠9; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF), carburetted car⁠10
  • 1550 mmNot yet confirmed: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), 61.0 in; basis not stated⁠1
Height127 cm

Height, US TR6 (CF)

Several figures in print.

  • 127 cmGood sources agree: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF), hood up (117 cm hood down)⁠10; TR Register, "Triumph TR6 Buyers Guide" (facts sheet), 50.0 in⁠1
  • 46 inNot yet confirmed: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973, 1974 specification ('height, 46-ins.'); basis not stated (the 1969 specification gave 46 in top down)⁠9
Kerb weight2390 lb

Kerb weight, US TR6 (CF)

Several figures in print.

  • 2390 lbOne good source: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973, 'basic curb: 2,390 lbs.', 1974 specification⁠9
  • ~2,450 lbOne good source: Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012, 'curb weight to around 2,450 lb (1,111 kg)', a 1975 or 1976 car with overriders⁠6
  • 1106 kgOne good source: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF), 1975–76 model years⁠10
  • 1118 kgOne good source: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF), US cars, up to 1,118 kg⁠10
  • 1130 kgOne good source: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), 2,491 lb; scope not stated⁠1
Wheelbase88.0 in

Wheelbase, US TR6 (CF)

Several figures in print.

  • 88.0 inGood sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973, 1974 specification ('wheelbase, 88.0-ins.')⁠9; TR Register, "Triumph TR6 Buyers Guide" (facts sheet), 88.0 in⁠1
  • 224.0 cmGood sources agree: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF), carburetted car⁠10
Ground clearance15.2 cm
Fuel tank11.4 US gal

Fuel tank, US TR6 (CF)

Good sources disagree.

  • 11.4 US galDisputed: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973, 1974 specification⁠9
  • 10.25 galDisputed: Vintage Triumph Register, "TR6" (history, year-by-year changes, US production table, buyer's guide), '72: 'Gas tank capacity reduced to 10.25 gallons' (unit not stated)⁠11

Contents

Production

Production: how far the sources agree

78147, TR6 Carb, 'Produced for the Export Market - 78147'
Disputed.
78142, '78142 were carburettor US market models'
Disputed.
almost 78,000, sold in the US as carburetted cars
Disputed.
77398, Roger Williams (2014)
Not yet confirmed.

  1. 78147TR6 Carb, 'Produced for the Export Market - 78147'

    TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠1

  2. 78142'78142 were carburettor US market models'

    TR Register, "Buyer Beware: TR6" (2 pp. PDF leaflet)⁠2

  3. almost 78,000sold in the US as carburetted cars

    Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF)⁠10

  4. 77398Roger Williams (2014)

    Wikipedia (DE), "Triumph TR6", 2026⁠28

Contents

Sources

Sources are given as plain text; their addresses are on the sources page.

  • Primarymade at the time, by the maker or by people who were there
  • Referenceserious later work: clubs, specialists, magazines, books
  • Uncheckedencyclopaedias and enthusiast sites: cited beside a good source, named in the sentence, or marked Unchecked
  1. TR Register, "Triumph TR6 Buyers Guide" (facts sheet), Facts & figures: TR6 Carb, September 1968 to July 1976, for export; Facts & Figures; Engine Details; Performance Data table; Suspension Details; 'Will it fit in the garage?' table; Facts & Figures, 'Manufactured'; Facts & Figures, 'Production Figures TR6 Carb'. Reference
  2. TR Register, "Buyer Beware: TR6" (2 pp. PDF leaflet), p. 1, the carburetted cars by model year; left-hand drive; p. 1, the overriders from the 1974 model; high-backed seats; p. 1, commission numbers by model year, 1969 to 1976 and 1974½; p. 1; p. 1, CC ranges. Reference
  3. Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1), pp. 1–3, the US launch specification; p. 3, the US safety equipment, tyres and seats; Jan 1969, pp. 2-3, technical specification; Jan 1969, pp. 2-3, technical specification, capacities and general dimensions; Jan 1969, pp. 2-3, technical specification (Performance); Jan 1969, pp. 2-3, technical specification (Optional equipment). Primary
  4. Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313), p. 5, CC25003L and CF58328U; p. 5, the first and last car of each year; CF27001U as the start of the 1975 model year; p. 5 (PDF p. 6), Vehicle identification; p. 1 (PDF p. 2), foreword; p. 209 (PDF p. 210), index; p. 5 (PDF p. 6), Original settings and standard capacities; p. 4 (PDF p. 5), contents. Reference
  5. Chris Cowin, "History: Exporting British cars to Canada – Part Two: The British Leyland Years", AROnline, 19 Aug 2025, Canadian TR6s kept carburettors. Reference
  6. Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012, A new bottle: the federal rules; the TR250's engine; TR in twilight: the roof-crush proposal; the bumper standard and its exemption; TR in twilight: California and the single carburettor; TR in twilight: the TR6 against the TR7 in the showrooms; 'A New Bottle'; 'A New Bottle' (caption); 'The BMC-Leyland Merger' (caption). Reference
  7. Charlie Calderwood, "Datsun 240Z vs Triumph TR6: the battle for America", Classic & Sports Car, 1 Feb 2023, the distributors' caution; carburettors a local mechanic could fix; Californian emissions standards and the injection; the 240Z in America. Reference
  8. Clive Richardson, "The Tale of a TR6", Motor Sport, Nov 1973, p. 54, p. 54, stronger front-bumper mountings for 1973. Primary
  9. Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1973, Dec 1973, p. 2, the 1974 bumper guards; p. 2, the 1974 model year; p. 3, the 1974 specification: two Strombergs; Dec 1973, p. 3, 1974 TR-6 specification. Primary
  10. Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: British Leyland Triumph TR 6PI und TR 6 (Vergaser) – Die Karmann Autos", TR-Register Deutschland, c. 2010, 13 pp. (PDF), p. 2, the US tyres; p. 2, the gearbox change point; p. 1; p. 3, technical data (carburetted); p. 2; p. 4, Maße und Gewichte; p. 4, Getriebeübersetzungen. Reference
  11. Vintage Triumph Register, "TR6" (history, year-by-year changes, US production table, buyer's guide), change list, '69 to '76; its own 1974½ range; TR6 page, 'Production Dates and Numbers'; TR6 page, change list '72; TR6 page, change list '68. Reference
  12. Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, March 1970, Mar 1970, the steering column lock. Primary
  13. Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, November–December 1971, Nov–Dec 1971 (vol. 17 nos. 11–12), the 1972 model year: compression, colours; Nov-Dec 1971, p. 1; Nov-Dec 1971, p. 2, 1972 specification table; Nov-Dec 1971, p. 2, 1972 specification table, BHP row. Primary
  14. Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1973, Jan 1973 (vol. 19 no. 1), p. 2, the 1973 model year and air conditioning; Jan 1973, p. 2. Primary
  15. Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1974, Dec 1974, the 1975 model year. Primary
  16. Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, September 1974, Sep 1974, readers' letters: a 1973 TR-6's fuel consumption. Primary
  17. Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, August–September 1975, Aug–Sep 1975 (vol. 21 no. 5), readers' letters: a TR6 almost trouble-free. Primary
  18. Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, May–June 1976, May–Jun 1976, readers' letters: a 1974 TR-6 in Alaska; June 1976 deliveries. Primary
  19. Chris Cowin, "History: Exporting British cars to the USA – Part Two", AROnline, 31 May 2025, updated 21 Oct 2025, the TR6 and TR7 side by side in the US, 1975–76. Reference
  20. Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1970, Dec 1970 (vol. 16 no. 12), the 1970 ARRC, C Production: 240Zs first, second and third. Primary
  21. Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1972, Dec 1972 (vol. 18 no. 12), p. 2, the 1972 ARRC: "only losing to the 240Z by 3.8 seconds". Primary
  22. Moss Motoring, "Triumph in America", 1 Mar 2001, the Jensen-Healey the nearest rival from 1973. Reference
  23. Jan P. Norbye and Jim Dunne, "The $3,000 Roadsters", Popular Science, vol. 195 no. 2, Aug 1969, pp. 96–101, pp. 96-101 (read by the TR5 agent). Primary
  24. Revington TR, "Technical Specification Change Points" (TR6), change points page. Reference
  25. Wikipedia (EN), "Triumph TR6", 2026, specifications section. Unchecked
  26. Road & Track, Road & Track, June 1974, Jun 1974, introductory table. Primary
  27. British Motor Museum, "Factor us in: Standard Triumph factory at Canley", photograph. Reference
  28. Wikipedia (DE), "Triumph TR6", 2026, lead section. Unchecked

Contents