Triumph TR6 PI

The injected TR6, built from 1968 to 1975 for Britain, Europe and most markets outside North America: Lucas petrol injection, which Americans call fuel injection, in two series, the CP and the de-rated CR. Also written TR6PI, and TR6 2.5 PI.

A TR6 PI, known by the INJECTION badge on its black rear panel, at the Haynes International Motor Museum's breakfast club in May 2017.Andrew Bone from Weymouth, England, CC BY 2.0

In March 1971 Motor Sport took over "that big, brutish petrol-injection sports car, the TR6" for a test. It was the TR6 for Britain and for most of the world outside North America, and it used the Lucas petrol (fuel) injection of the TR5 PI and the Triumph 2.5 PI saloon (sedan): an electric pump, a metering unit driven from the engine, and an injector in each inlet port. Triumph built it in two series, the CP from November 1968 and the CR from late 1972 to February 1975. Its production readings are on this page; Severson writes that its sales never went above about 3,000 a year. The engine page explains the system and its ratings.⁠source 1source 2source 3source 4source 5source 6

The CP car, 1968–72

Rimmer's catalogue counts CP25001 as most likely a prototype and the next 144 numbers as kits; the first production car was CP25156, built on 28 November 1968. The last CP car, CP77718, followed on 21 September 1972. Triumph's figures for the CP's engine, which the 1970 British brochure prints, are set beside the other series' in the specifications; the brochure gives no basis for its power rating, and later brochures and German papers gave lower figures for the same engine.

The CP changed little. British cars gained a steering-column lock for the 1971 model year, a legal requirement, the brochure notes, and from the middle of 1971 the gearbox (transmission) had stronger internals, of the Stag's type, and new ratios; a seven-bladed fan came in from CP52420. Triumph sold the injection on its novelty:

In Britain, Triumph is the first and only manufacturer to fit petrol injection to a volume production sports car.

Standard-Triumph, Triumph TR6 P.I. brochure, December 1970

Owners who wrote to Motor Sport about their injected cars between 1970 and 1974 had mixed luck with them. A 1969 car cut out on the road; the owner of a car assembled in Belgium wrote in 1973 that its injection had never worked properly; another wrote the same year to defend the system's reliability, and in January 1974 a reader who worked on aircraft fuel injection blamed a misfire on a 1972 car on loose machining tolerances in the metering unit.⁠source 5source 2source 7source 4source 8source 9

A yellow Triumph TR6 with its front-hinged bonnet raised to show the engine, on wire wheels before a stone building. — An injected car of the CP years on wire wheels, its bonnet (hood) up, photographed in Lancashire in 2014.Thomas's Pics, CC BY 2.0

The petrol-injection six of a yellow Triumph TR6 PI: paired throttle bodies with brass injectors, braided injector pipes from the metering unit and a polished finned rocker cover. — The same car's engine, seconds later: Lucas injection, with paired throttle bodies, brass injectors and the pipes from the metering unit; the polished rocker cover and braided hoses are not standard.Thomas's Pics, CC BY 2.0

Contents

The CR car, 1972–75

The CR series began with kits for Belgium, CR1 to CR168, and the first CR built at Canley, CR169, came on 15 November 1972, with the new front, instruments and trim of the late cars. Its engine was different too. A milder camshaft and revised metering lowered its rated power, and the sources do not agree whose camshaft it was: Motor Sport says the 2.5 PI saloon's, while TR-Register Deutschland says it was modelled on the carburetted engine's, and Severson that it was "the shorter-duration camshaft from the federalized cars".

Nor do they agree why. Motor Sport gives the reason as the new European emission rules; TR-Register Deutschland writes that stricter German exhaust rules may have prompted it; Severson ties it to complaints about the 2.5 PI's rough idle. According to TR-Register Deutschland, the engine mountings were changed at the same time to cut a loud noise from the earlier engine. The TR Register holds that the loss was smaller than it looked, since the old and new ratings were made on different bases, which it does not name. Clive Richardson, who bought a new CR in 1973 and wrote it up for Motor Sport, put it more simply: "The lion has almost become a lamb".

Motor Sport believed that the pick-up points of the rear suspension had also been moved, which removed much of the squat under power; Triumph would not confirm it. The CR had Laycock's J-type overdrive, on third and top, and British cars had it as standard from CR5000, the TR Register's change point. Richardson's car came with faults and went through three fuel pumps, but after Triumph's engineers rebuilt its injection he covered thousands of miles without trouble from the injection, and said so in print.

A magenta Triumph TR6 with tan seats, a luggage rack and a black front spoiler, on mown grass beside a green Morgan. — The new front of the CR years on a late TR6 in magenta at the Chiltern Open Air Museum, June 2024: the spoiler and grille strips show, but not whether it is injected.Mike Peel, CC BY-SA 4.0

Contents

Why North America never had the PI

Classic & Sports Car gives two reasons: injection was hard to bring within California's emission limits, and the American distributors were wary of new technology that might need more servicing. Aaron Severson puts it more bluntly:

Leyland never tried to federalize the injected engine, both for cost reasons and because it remained a source of service headaches in other markets.

Aaron Severson, Ate Up With Motor, 2012

Even the racing cars gave it up. In 1975 Group 44's TR6 moved to D Production and ran on the standard carburettors, after years on injection in C Production. The US TR6 page follows the carburetted car through its model years.⁠source 6source 14source 15source 16

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. — What America had instead: a carburetted TR6 engine with an air pump, an exhaust-gas recirculation valve and two Strombergs, from the last week of production in July 1976 by its owner's account.Transpoecon, CC BY-SA 4.0

Contents

Rivals at the PI's price

Writing in Motor Sport in 1973 about the TR6 he had ordered the autumn before, Clive Richardson found the other open cars in its price bracket in Britain virtually limited to two, the Jensen-Healey and the Morgan Plus 8, and granted that a Lotus Europa handled better. Aaron Severson adds a closed car: for about the same money a British buyer could have a Ford Capri 3000 GT, with comparable performance, and was the more practical car. And within the company, a reader of Motor Sport pointed out in 1970 that Triumph's own GT6 cost less. The rivals page sets the TR6 against them all.⁠source 10source 6source 8

A red Jensen-Healey roadster with the hood folded, on a concrete apron below a grassy bank. — A Jensen-Healey, a car of the type, first registered in December 1972 by its photographer's account, at Duxford in May 2011.pyntofmyld, CC BY 2.0

An ivory Morgan Plus 8 with dark green wings and a luggage trunk on the rack, on grass beside a harbour. — A Morgan Plus 8, a car of the type, of 1971 by its photographer's account, at the Greenwich Concours d'Elegance in June 2024.Mr.choppers, CC BY-SA 3.0

Contents

Specification: TR6 PI (CP)

Production

Sources for Production, TR6 PI (CP)

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 2012⁠source 6; "C.R.", "The Triumph TR7 Drophead" ("Sunshine Seven"), Motor Sport, Apr 1980, p. 35⁠source 17; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3
Built: Several figures in print.Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313)⁠source 5; TR Register, "Buyer Beware: TR6" (2 pp. PDF leaflet)⁠source 11
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)⁠source 4; Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠source 6; Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313)⁠source 5; Revington TR, "Technical Specification Change Points" (TR6)⁠source 18
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)⁠source 4; TR Register, "Buyer Beware: TR6" (2 pp. PDF leaflet)⁠source 11; Clive Richardson, "The Tale of a TR6", Motor Sport, Nov 1973, p. 54⁠source 10

Production
Price new	£1,333 19s 2d Price new, TR6 PI (CP) Several figures in print. £1,333 19s 2dGood 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, TR6 PI at launch, with purchase tax⁠source 6 £1,020One 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, TR6 PI at launch, basic (before purchase tax)⁠source 6 £1,334Good sources agree: "C.R.", "The Triumph TR7 Drophead" ("Sunshine Seven"), Motor Sport, Apr 1980, p. 35, January 1969, 'without the optional overdrive'⁠source 17 £1,333 19s 1dNot yet confirmed: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), labelled 'Basic Price TR6 PI' (the tax-paid price; the penny differs)⁠source 3
Built	28 Nov 1968 - 21 Sep 1972 (CP25156 - CP77718) Built, TR6 PI (CP) Several figures in print. 28 Nov 1968 - 21 Sep 1972 (CP25156 - CP77718)One good source: Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313), first production car CP25156 'built 28th Nov 68'; last CP77718 'built 21st Sept 72'; CKD numbers within the range⁠source 5 Sep 1972 (last CP)Good sources agree: TR Register, "Buyer Beware: TR6" (2 pp. PDF leaflet), '1972 model CP75001 to CP77718 the last car being built in September 1972'⁠source 11
Designers	Karmann (front and rear restyle; press tools) Designers, TR6 PI (CP) 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')⁠source 4 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 Giesecke⁠source 6 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'⁠source 5 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 kept⁠source 18
Built at	Canley, Coventry Built at, TR6 PI (CP) 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 assembly⁠source 4 Belgium (CKD kits CP 25004-25145, 50002-50436, 54573-54584)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), TR6 PIs built in Belgium from CKD kits, for customs concessions⁠source 4 Belgium (CKD assembly)Good sources agree: TR Register, "Buyer Beware: TR6" (2 pp. PDF leaflet), 'Cars assembled in Belgium were all petrol injected and LHD'⁠source 11 Malines (Mechelen), BelgiumGood sources agree: Clive Richardson, "The Tale of a TR6", Motor Sport, Nov 1973, p. 54, 'those sold on the Continent are assembled at the British Leyland plant at Malines, Belgium' (Nov 1973)⁠source 10 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)⁠source 4

Engine

Sources for Engine, TR6 PI (CP)

Capacity: Several figures in print.Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3
Engine position: One good source.Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313)⁠source 5
Block: Good sources agree.'all-iron'. Charlie Calderwood, "Datsun 240Z vs Triumph TR6: the battle for America", Classic & Sports Car, 1 Feb 2023⁠source 14; 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)⁠source 4
Cylinder head: Good sources agree.'all-iron'. Charlie Calderwood, "Datsun 240Z vs Triumph TR6: the battle for America", Classic & Sports Car, 1 Feb 2023⁠source 14; 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)⁠source 4
Valve gear: 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)⁠source 4; Charlie Calderwood, "Datsun 240Z vs Triumph TR6: the battle for America", Classic & Sports Car, 1 Feb 2023⁠source 14
Bore × stroke: Several figures in print.Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3
Compression ratio: Good sources agree.Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2; 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)⁠source 4
Fuel system: Several figures in print.Charlie Calderwood, "Datsun 240Z vs Triumph TR6: the battle for America", Classic & Sports Car, 1 Feb 2023⁠source 14; Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2
Aspiration: One good source.Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2
Ignition: One good source.Settings for every TR6: contact-breaker gap, distributor rotation, dwell, static timing. Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313)⁠source 5
Cycle: One good source.Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2
Lubrication: One good source.Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2

Engine
Capacity	2,498 cc (152 cu in) Capacity, TR6 PI (CP) Several figures in print. 2,498 cc (152 cu in)Good sources agree: Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG, 'Capacity 2498 c.c. (152 cu.in.)'⁠source 2 2498 ccGood sources agree: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), '6 Cylinder 74.7mm x 95mm 2498cc engine'⁠source 3
Engine position	Front
Block	cast iron
Cylinder head	cast iron
Valve gear	OHV, two valves per cylinder Valve gear, TR6 PI (CP) Several figures in print. 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), TR-Register DE's data for the carburetted car, which it says applies to every TR6 ('grundsätzlich technisch baugleich')⁠source 4 ohvGood sources agree: Charlie Calderwood, "Datsun 240Z vs Triumph TR6: the battle for America", Classic & Sports Car, 1 Feb 2023, 'all-iron, ohv 2498cc straight-six'⁠source 14
Bore × stroke	74.7 x 95 mm (2.94 x 3.74 in) Bore × stroke, TR6 PI (CP) Several figures in print. 74.7 x 95 mm (2.94 x 3.74 in)Good sources agree: Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG, bore 74.7 mm (2.94 in), stroke 95 mm (3.74 in)⁠source 2 74.7 x 95 mmGood sources agree: TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3
Compression ratio	9.5:1
Fuel system	Lucas mechanical fuel injection Fuel system, TR6 PI (CP) Several figures in print. Lucas mechanical fuel injectionGood sources agree: Charlie Calderwood, "Datsun 240Z vs Triumph TR6: the battle for America", Classic & Sports Car, 1 Feb 2023⁠source 14 Lucas petrol injectionGood sources agree: Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG, 'Petrol injection is a product of international motor racing. It was developed (by Lucas, in this country)'⁠source 2
Aspiration	Naturally Aspirated
Ignition	coil and distributor (contact breaker)
Cycle	Four-stroke
Lubrication	Wet Sump

Performance

Sources for Performance, TR6 PI (CP)

Power: Several figures in print.Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3; Bill Boddy, "Rumblings" (TR6 PI and 2.5 PI Mk II), Motor Sport, Mar 1971, p. 34⁠source 1; Charlie Calderwood, "Datsun 240Z vs Triumph TR6: the battle for America", Classic & Sports Car, 1 Feb 2023⁠source 14; Clive Richardson, "The Tale of a TR6", Motor Sport, Nov 1973, p. 54⁠source 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)⁠source 4
Torque: Good sources disagree.Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2; Charlie Calderwood, "Datsun 240Z vs Triumph TR6: the battle for America", Classic & Sports Car, 1 Feb 2023⁠source 14; 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)⁠source 4
Top speed: Several figures in print.TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3; Charlie Calderwood, "Datsun 240Z vs Triumph TR6: the battle for America", Classic & Sports Car, 1 Feb 2023⁠source 14; Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2
0–60 mph: Several figures in print.TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3; Charlie Calderwood, "Datsun 240Z vs Triumph TR6: the battle for America", Classic & Sports Car, 1 Feb 2023⁠source 14; Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2; Bill Boddy, "Rumblings" (TR6 PI and 2.5 PI Mk II), Motor Sport, Mar 1971, p. 34⁠source 1
Standing start: Several figures in print.TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3; Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2

Performance
Power	150 bhp Power, TR6 PI (CP) Several figures in print. 150 bhpGood sources agree: Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG, at 5,500 rpm; Triumph's figure, basis not stated⁠source 2; TR Register, "Triumph TR6 Buyers Guide" (facts sheet), 'CP Series 150 bhp @ 5500rpm'; basis not stated⁠source 3; Bill Boddy, "Rumblings" (TR6 PI and 2.5 PI Mk II), Motor Sport, Mar 1971, p. 34, 'a 150 b.h.p. two-seater'⁠source 1; Charlie Calderwood, "Datsun 240Z vs Triumph TR6: the battle for America", Classic & Sports Car, 1 Feb 2023, 'Max power 150bhp @ 5500rpm'⁠source 14 142 bhpOne good source: Clive Richardson, "The Tale of a TR6", Motor Sport, Nov 1973, p. 54, 'later' brochures ('Original brochures claimed 150 b.h.p., later ones 142'); basis not stated⁠source 10 143 PSOne 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), DIN, German figure: '150 BPS (Brakehorsepower=143 DIN-PS)'⁠source 4
Torque	1900 lb in Torque, TR6 PI (CP) Good sources disagree. 1900 lb inDisputed: Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG, at 3,000 rpm (158 lb ft); factory brochure, Dec 1970⁠source 2 164 lb ftDisputed: Charlie Calderwood, "Datsun 240Z vs Triumph TR6: the battle for America", Classic & Sports Car, 1 Feb 2023, 'Max torque 164lb ft @ 3500rpm'⁠source 14; 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), printed '164 Nm bei 3500 U/min' (a unit error: lb ft meant)⁠source 4
Top speed	119 mph Top speed, TR6 PI (CP) Several figures in print. 119 mphOne good source: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), Autocar mean maximum (the TR Register's table, column 'TR6 PI (CP) (AUTOCAR)')⁠source 3; Charlie Calderwood, "Datsun 240Z vs Triumph TR6: the battle for America", Classic & Sports Car, 1 Feb 2023, 'Top speed 119mph'; source of the figure not named⁠source 14 115-125 mphOne good source: Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG, maker's claim, 'depending on specification'⁠source 2
0–60 mph	8.2 s 0–60 mph, TR6 PI (CP) Several figures in print. 8.2 sOne good source: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), Autocar (the TR Register's table, column 'TR6 PI (CP) (AUTOCAR)')⁠source 3; Charlie Calderwood, "Datsun 240Z vs Triumph TR6: the battle for America", Classic & Sports Car, 1 Feb 2023, '0-60mph 8.2 secs'; source not named⁠source 14 9.0 sOne good source: Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG, maker, through the gears⁠source 2 under nine (s)One good source: Bill Boddy, "Rumblings" (TR6 PI and 2.5 PI Mk II), Motor Sport, Mar 1971, p. 34, 'in the 0 to 60 m.p.h. in under nine seconds category'⁠source 1
Standing start	16.3 s Standing start, TR6 PI (CP) Several figures in print. 16.3 sOne good source: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), standing quarter mile, Autocar (the TR Register's table, CP column)⁠source 3 16½ sOne good source: Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG, standing quarter mile, maker's figure⁠source 2

Running gear

Sources for Running gear, TR6 PI (CP)

Steering: Good sources agree.Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3
Gears: Good sources agree.'four forward ratios … syncromesh on all forward ratios'. Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2; Charlie Calderwood, "Datsun 240Z vs Triumph TR6: the battle for America", Classic & Sports Car, 1 Feb 2023⁠source 14
Overdrive: Several figures in print.TR Register, "Buyer Beware: TR6" (2 pp. PDF leaflet)⁠source 11; Bill Boddy, "Rumblings" (TR6 PI and 2.5 PI Mk II), Motor Sport, Mar 1971, p. 34⁠source 1; Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2
Front brakes: One good source.'Caliper disc brakes on front wheels … 10⅞ in dia.'; 'direct acting servo'. Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2
Rear brakes: One good source.'Drum brakes, 9 x 1¾ in of leading and trailing shoe type'. Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2
Front suspension: Several figures in print.Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3
Rear suspension: Several figures in print.TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3; Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2
Tyres: Good sources agree.'Tyre size 165 x 15' (UK market). Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2; Bill Boddy, "Rumblings" (TR6 PI and 2.5 PI Mk II), Motor Sport, Mar 1971, p. 34⁠source 1
Wheels: Several figures in print.Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3
Final drive: One good source.Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2
Clutch: Several figures in print.Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2; 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)⁠source 4
Starter: One good source.Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313)⁠source 5

Running gear
Steering	rack and pinion
Gears	4
Overdrive	3 Overdrive, TR6 PI (CP) Several figures in print. 3Good sources agree: TR Register, "Buyer Beware: TR6" (2 pp. PDF leaflet), optional ('O' suffix); 'Overdrive operates on 2nd, 3rd and 4th on CP and CC cars'⁠source 11; Bill Boddy, "Rumblings" (TR6 PI and 2.5 PI Mk II), Motor Sport, Mar 1971, p. 34, test car: 'o/d functions on the three upper ratios'⁠source 1 optional extraGood sources agree: Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG, 'Optional Extras … Overdrive'⁠source 2
Front brakes	Disc, 10⅞ in
Rear brakes	Drum, 9 x 1¾ in
Front suspension	independent, coil springs, telescopic dampers, anti-roll bar Front suspension, TR6 PI (CP) Several figures in print. independent, coil springs, telescopic dampers, anti-roll barGood sources agree: Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG, 'Low periodicity independent system, incorporating anti-roll bar … coil springs controlled by telescopic dampers'⁠source 2 unequal-length double wishbones, coil springs, telescopic dampersGood sources agree: TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3
Rear suspension	semi-trailing arms, coil springs, lever arm dampers Rear suspension, TR6 PI (CP) Several figures in print. semi-trailing arms, coil springs, lever arm dampersGood sources agree: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), 'Independent rear suspension (IRS) by semi trailing arm, coil springs and lever arm dampers'⁠source 3 semi-trailing arms, coil springs, piston dampersGood sources agree: Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG, 'Semi-trailing arm independent suspension with coil springs controlled by piston dampers'⁠source 2
Tyres	165 x 15
Wheels	5½J steel disc Wheels, TR6 PI (CP) Several figures in print. 5½J steel discGood sources agree: Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG, 'Steel disc type - 5½ in J rim'⁠source 2 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'⁠source 3
Final drive	Shaft
Clutch	diaphragm, 8½ in, hydraulic Clutch, TR6 PI (CP) Several figures in print. diaphragm, 8½ in, hydraulicGood sources agree: Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG, 'Clutch, diaphragm type 8½ in dia., hydraulically operated'⁠source 2 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), TR-Register DE's data for the carburetted car, which it says applies to every TR6 ('grundsätzlich technisch baugleich')⁠source 4
Starter	Electric

Body and chassis

Sources for Body and chassis, TR6 PI (CP)

Chassis: Several figures in print.Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2; 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)⁠source 4

Body and chassis
Chassis	box-section side members braced by a cruciform Chassis, TR6 PI (CP) Several figures in print. box-section side members braced by a cruciformGood sources agree: Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG, 'Channel steel pressings form box section side members braced by a cruciform member'⁠source 2 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)⁠source 4

Dimensions and weight

Sources for Dimensions and weight, TR6 PI (CP)

Length: Several figures in print.Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2; 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)⁠source 4; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3
Width: Several figures in print.Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2; 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)⁠source 4; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3
Height: Good sources agree.Unladen, hood erect, 4 ft 2 in. Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2; 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)⁠source 4; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3
Kerb weight: Several figures in print.TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3; Charlie Calderwood, "Datsun 240Z vs Triumph TR6: the battle for America", Classic & Sports Car, 1 Feb 2023⁠source 14
Wheelbase: Several figures in print.Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2; 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)⁠source 4; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3
Ground clearance: Good sources agree.6 in. Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2; 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)⁠source 4
Fuel tank: Several figures in print.Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG⁠source 2; Bill Boddy, "Rumblings" (TR6 PI and 2.5 PI Mk II), Motor Sport, Mar 1971, p. 34⁠source 1; Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313)⁠source 5

Dimensions and weight
Length	3937 mm Length, TR6 PI (CP) Several figures in print. 3937 mmGood sources agree: Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG, 12 ft 11 in⁠source 2; 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), TR-Register DE's data for the carburetted car, which it says applies to every TR6 ('grundsätzlich technisch baugleich')⁠source 4 3950 mmNot yet confirmed: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), 155.5 in; basis not stated⁠source 3
Width	1470 mm Width, TR6 PI (CP) Several figures in print. 1470 mmGood sources agree: Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG, 4 ft 10 in⁠source 2; 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), TR-Register DE's data for the carburetted car, which it says applies to every TR6 ('grundsätzlich technisch baugleich')⁠source 4 1550 mmNot yet confirmed: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), 61.0 in; basis not stated⁠source 3
Height	1270 mm
Kerb weight	1130 kg Kerb weight, TR6 PI (CP) Several figures in print. 1130 kgOne good source: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), 2,491 lb; scope not stated⁠source 3 1122 kgOne good source: Charlie Calderwood, "Datsun 240Z vs Triumph TR6: the battle for America", Classic & Sports Car, 1 Feb 2023, 2,473 lb; 'Weight', TR6 PI factfile⁠source 14
Wheelbase	2240 mm Wheelbase, TR6 PI (CP) Several figures in print. 2240 mmGood sources agree: Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG, 7 ft 4 in⁠source 2; 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), TR-Register DE's data for the carburetted car, which it says applies to every TR6 ('grundsätzlich technisch baugleich')⁠source 4 2235 mmOne good source: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), 88.0 in⁠source 3
Ground clearance	152 mm
Fuel tank	51 L Fuel tank, TR6 PI (CP) Several figures in print. 51 LGood sources agree: Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG, 'Fuel tank 11¼ galls., 51 litres, 13.5 U.S.A. galls.'⁠source 2; Bill Boddy, "Rumblings" (TR6 PI and 2.5 PI Mk II), Motor Sport, Mar 1971, p. 34, 'the tank capacity is quoted as 11 1/4 gallons, but it wouldn't take much over ten'⁠source 1 50 LNot yet confirmed: Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313), '11 gal (50 L)', approximate, every TR6⁠source 5

Contents

Specification: TR6 PI

Production

Sources for Production, TR6 PI

Built: Several figures in print.Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313)⁠source 5; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3; Vintage Triumph Register, "TR6" (history, year-by-year changes, US production table, buyer's guide)⁠source 7; TR Register, "Buyer Beware: TR6" (2 pp. PDF leaflet)⁠source 11; 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)⁠source 4; Wikipedia (EN), "Triumph TR6", 2026⁠source 13

Production
Built	28 Nov 1968 (first production PI, CP25156) Built, TR6 PI Several figures in print. 28 Nov 1968 (first production PI, CP25156)One good source: Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313), 'CP25156 First production car (built 28th Nov 68)'; CP25001 'probably a prototype'⁠source 5 Nov 1968 - Feb 1975Good sources agree: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), 'TR6 PI manufactured November 1968 to February 1975'⁠source 3 7 Feb 1975 (last PI, CR6701)Good sources agree: Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313), 'CR6701 Last production car (built 7th Feb 75)'⁠source 5 7 Feb 1975 (last PI)Good sources agree: Vintage Triumph Register, "TR6" (history, year-by-year changes, US production table, buyer's guide), 'Last P.I. TR6 built on 2/7/75' (US date order)⁠source 7 Feb 1975 (last PI)Good sources agree: TR Register, "Buyer Beware: TR6" (2 pp. PDF leaflet), 'The last PI car was built in February 1975'⁠source 11 Jan 1975 (last PI, CR 6701)Not yet confirmed: 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)⁠source 4 Jul 1975 (last PI)Not yet confirmed: Wikipedia (EN), "Triumph TR6", 2026, citing Knowles (2016)⁠source 13

Contents

Specification: TR6 PI (CR)

Production

Sources for Production, TR6 PI (CR)

Price new: One good source.Hardtop model, February 1973; overdrive £73 and soft top £48 extra. Clive Richardson, "The continuing tale of a TR6", Motor Sport, Dec 1974, p. 53⁠source 12
Built: Several figures in print.Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313)⁠source 5; TR Register, "Buyer Beware: TR6" (2 pp. PDF leaflet)⁠source 11; Vintage Triumph Register, "TR6" (history, year-by-year changes, US production table, buyer's guide)⁠source 7; 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)⁠source 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)⁠source 4; Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠source 6; Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313)⁠source 5; Revington TR, "Technical Specification Change Points" (TR6)⁠source 18
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)⁠source 4; Clive Richardson, "The Tale of a TR6", Motor Sport, Nov 1973, p. 54⁠source 10; Motor Sport, Readers' letters on the TR6 (group), Feb 1970, p. 54; Jun 1973, p. 94; Aug 1973, p. 77; Jan 1974, p. 57⁠source 8

Production
Price new	£1,387 + 290 purchase tax
Built	Nov 1972 - 7 Feb 1975 (CR169 - CR6701) Built, TR6 PI (CR) Several figures in print. Nov 1972 - 7 Feb 1975 (CR169 - CR6701)One good source: Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313), CKD kits CR1-CR168 first; CR169 'First production car (built 15th Nov 72)'; CR6701 'Last production car (built 7th Feb 75)'⁠source 5 late 1972 - Feb 1975Good sources agree: TR Register, "Buyer Beware: TR6" (2 pp. PDF leaflet), 'In late 1972 the revised CR/CF series was introduced'; 'The last PI car was built in February 1975'⁠source 11 7 Feb 1975 (last PI)Good sources agree: Vintage Triumph Register, "TR6" (history, year-by-year changes, US production table, buyer's guide), 'Last P.I. TR6 built on 2/7/75'⁠source 7 1972 (CKD kits CR 1-168)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)⁠source 4
Designers	Karmann (front and rear restyle; press tools) Designers, TR6 PI (CR) 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')⁠source 4 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 Giesecke⁠source 6 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'⁠source 5 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 kept⁠source 18
Built at	Canley, Coventry Built at, TR6 PI (CR) 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 assembly⁠source 4 Malines (Mechelen), BelgiumGood sources agree: Clive Richardson, "The Tale of a TR6", Motor Sport, Nov 1973, p. 54, 'those sold on the Continent are assembled at the British Leyland plant at Malines, Belgium'⁠source 10 Mechelen, BelgiumGood sources agree: Motor Sport, Readers' letters on the TR6 (group), Feb 1970, p. 54; Jun 1973, p. 94; Aug 1973, p. 77; Jan 1974, p. 57, an owner, June 1973: 'assembled here in Belgium at Mechelen'⁠source 8 Belgium (CKD kits CR 1-168, 5001-5048)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), chassis numbers sent to Belgium as CKD kits⁠source 4 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)⁠source 4

Engine

Sources for Engine, TR6 PI (CR)

Capacity: Good sources agree.2,498 cc. British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3
Engine position: One good source.Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313)⁠source 5
Block: One good source.TR-Register DE's data for the carburetted car, which it says applies to every TR6 ('grundsätzlich technisch baugleich'). 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)⁠source 4
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)⁠source 4
Valve gear: One good source.TR-Register DE's data for the carburetted car, which it says applies to every TR6 ('grundsätzlich technisch baugleich'). 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)⁠source 4
Bore × stroke: Good sources agree.British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3
Compression ratio: Good sources agree.OCR '95:1'. British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19; 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)⁠source 4
Fuel system: 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)⁠source 4; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3
Aspiration: 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)⁠source 4
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)⁠source 5
Cycle: 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)⁠source 4
Lubrication: One good source.British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19

Engine
Capacity	2498 cc
Engine position	Front
Block	cast iron
Cylinder head	cast iron
Valve gear	OHV, two valves per cylinder
Bore × stroke	74.7 x 95 mm
Compression ratio	9.5:1
Fuel system	Lucas mechanical fuel injection Fuel system, TR6 PI (CR) Several figures in print. Lucas mechanical fuel injectionGood 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)⁠source 4 Lucas indirect fuel injectionGood sources agree: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), 'TR6 Petrol Injection (Lucas Indirect Fuel Injection) for UK markets'⁠source 3
Aspiration	Naturally Aspirated
Ignition	coil and distributor (contact breaker)
Cycle	Four-stroke
Lubrication	Wet Sump

Performance

Sources for Performance, TR6 PI (CR)

Power: Several figures in print.British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3; Clive Richardson, "The Tale of a TR6", Motor Sport, Nov 1973, p. 54⁠source 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 2012⁠source 6; Revington TR, "Technical Specification Change Points" (TR6)⁠source 18; 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)⁠source 4
Torque: One good source.DIN ('143 lb-ft (194 N-m) DIN'). Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠source 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)⁠source 4
Top speed: Several figures in print.TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3; Clive Richardson, "The Tale of a TR6", Motor Sport, Nov 1973, p. 54⁠source 10
0–60 mph: Several figures in print.TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3; Clive Richardson, "The Tale of a TR6", Motor Sport, Nov 1973, p. 54⁠source 10
Standing start: One good source.Standing quarter mile, Triumph's claim (the TR Register's table, CR column). TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3

Performance
Power	125 bhp Power, TR6 PI (CR) Several figures in print. 125 bhpGood sources agree: British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974, at 5,000 rpm; basis not stated⁠source 19; TR Register, "Triumph TR6 Buyers Guide" (facts sheet), 'CR Series 125bhp @ 5000rpm'⁠source 3; Clive Richardson, "The Tale of a TR6", Motor Sport, Nov 1973, p. 54, 'de-rated to 125 b.h.p. for 1973'⁠source 10 124 hpOne 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, 'Net output fell to 124 hp (93 kW) and 143 lb-ft (194 N-m) DIN'⁠source 6; Revington TR, "Technical Specification Change Points" (TR6), '124bhp measured to different standards'⁠source 18 123 PSOne 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), DIN, at 5,100 rpm⁠source 4
Torque	143 lb ft
Top speed	116 mph Top speed, TR6 PI (CR) Several figures in print. 116 mphGood sources agree: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), Triumph's claim (the TR Register's table, column 'TR6 PI (CR) (TRIUMPH)')⁠source 3; Clive Richardson, "The Tale of a TR6", Motor Sport, Nov 1973, p. 54, 'Triumph claim 116 m.p.h. maximum for the latest model'⁠source 10 110 mphOne good source: Clive Richardson, "The Tale of a TR6", Motor Sport, Nov 1973, p. 54, a true level maximum, Motor Sport's staff car (from 107 when new)⁠source 10
0–60 mph	9.5 s 0–60 mph, TR6 PI (CR) Several figures in print. 9.5 sOne good source: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), Triumph's claim (the TR Register's table, CR column)⁠source 3 9.1 sOne good source: Clive Richardson, "The Tale of a TR6", Motor Sport, Nov 1973, p. 54, Motor Sport's staff car ('Sixty miles per hour comes up in 9.1 sec.')⁠source 10
Standing start	17.0 s

Running gear

Sources for Running gear, TR6 PI (CR)

Steering: Good sources agree.Three-spoke 368 mm wheel, 3¼ turns lock to lock. British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3
Gears: Good sources agree.Four forward ratios in the gearbox table (the pre-1971 ratios, a stale table). British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19; 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)⁠source 4
Overdrive: Several figures in print.TR Register, "Buyer Beware: TR6" (2 pp. PDF leaflet)⁠source 11; Clive Richardson, "The Tale of a TR6", Motor Sport, Nov 1973, p. 54⁠source 10; British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19
Front brakes: One good source.Front discs, 276 mm, servo. British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19
Rear brakes: One good source.British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19
Front suspension: Several figures in print.British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3
Rear suspension: Several figures in print.TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3; British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19
Tyres: Several figures in print.Clive Richardson, "The Tale of a TR6", Motor Sport, Nov 1973, p. 54⁠source 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)⁠source 4
Wheels: Several figures in print.British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3
Final drive: One good source.Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313)⁠source 5
Clutch: Several figures in print.British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19; 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)⁠source 4
Starter: One good source.Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313)⁠source 5

Running gear
Steering	rack and pinion
Gears	4
Overdrive	2 Overdrive, TR6 PI (CR) Several figures in print. 2Good sources agree: TR Register, "Buyer Beware: TR6" (2 pp. PDF leaflet), J-type on 3rd and 4th ('on 3rd and 4th on CR and CF cars'); optional, 'All UK market cars from CR5000 onwards had overdrive fitted as standard'⁠source 11; Clive Richardson, "The Tale of a TR6", Motor Sport, Nov 1973, p. 54, 'the Laycock J-type overdrive unit as an optional extra'; 'overdrive only on 3rd and top'⁠source 10 optional extra (Laycock J-type)Good sources agree: British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19
Front brakes	Disc, 276 mm
Rear brakes	Drum, 228 x 45 mm
Front suspension	independent with anti-roll bar Front suspension, TR6 PI (CR) Several figures in print. independent with anti-roll barGood sources agree: British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19 unequal-length double wishbones, coil springs, telescopic dampersGood sources agree: TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3
Rear suspension	semi-trailing arms, coil springs, lever arm dampers Rear suspension, TR6 PI (CR) Several figures in print. semi-trailing arms, coil springs, lever arm dampersGood sources agree: TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3 semi-trailing arms, coil springs, piston dampersGood sources agree: British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19
Tyres	165 HR 15 Tyres, TR6 PI (CR) Several figures in print. 165 HR 15Good sources agree: Clive Richardson, "The Tale of a TR6", Motor Sport, Nov 1973, p. 54, '165 HR-15 Dunlop SP Sport' (British-built cars; Michelin XAS fitted from 1973)⁠source 10 165 - 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), TR6 PI, on 5.5 x 15 in rims⁠source 4
Wheels	5½J steel disc Wheels, TR6 PI (CR) Several figures in print. 5½J steel discGood sources agree: British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19 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'⁠source 3
Final drive	Shaft
Clutch	diaphragm, 216 mm Clutch, TR6 PI (CR) Several figures in print. diaphragm, 216 mmGood sources agree: British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19 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), TR-Register DE's data for the carburetted car, which it says applies to every TR6 ('grundsätzlich technisch baugleich')⁠source 4
Starter	Electric

Body and chassis

Sources for Body and chassis, TR6 PI (CR)

Chassis: One good source.TR-Register DE's data for the carburetted car, which it says applies to every TR6 ('grundsätzlich technisch baugleich'). 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)⁠source 4

Body and chassis
Chassis	box frame of channel sections with an X brace

Dimensions and weight

Sources for Dimensions and weight, TR6 PI (CR)

Length: Several figures in print.British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19; 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)⁠source 4; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3
Width: Several figures in print.British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19; 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)⁠source 4; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3
Height: Good sources agree.Hood up. British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19; 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)⁠source 4; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3
Kerb weight: One good source.2,491 lb; scope not stated. TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3
Wheelbase: Several figures in print.British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19; 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)⁠source 4; TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3
Ground clearance: Good sources agree.British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19; 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)⁠source 4
Fuel tank: Good sources disagree.Clive Richardson, "The Tale of a TR6", Motor Sport, Nov 1973, p. 54⁠source 10; British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19; Clive Richardson, "The continuing tale of a TR6", Motor Sport, Dec 1974, p. 53⁠source 12

Dimensions and weight
Length	3937 mm Length, TR6 PI (CR) Several figures in print. 3937 mmGood sources agree: British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974, the OCR drops the first digit⁠source 19; 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), TR-Register DE's data for the carburetted car, which it says applies to every TR6 ('grundsätzlich technisch baugleich')⁠source 4 3950 mmNot yet confirmed: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), 155.5 in; basis not stated⁠source 3
Width	1470 mm Width, TR6 PI (CR) Several figures in print. 1470 mmGood sources agree: British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19; 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), TR-Register DE's data for the carburetted car, which it says applies to every TR6 ('grundsätzlich technisch baugleich')⁠source 4 1550 mmNot yet confirmed: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), 61.0 in; basis not stated⁠source 3
Height	1270 mm
Kerb weight	1130 kg
Wheelbase	2240 mm Wheelbase, TR6 PI (CR) Several figures in print. 2240 mmGood sources agree: British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974⁠source 19; 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), TR-Register DE's data for the carburetted car, which it says applies to every TR6 ('grundsätzlich technisch baugleich')⁠source 4 2235 mmOne good source: TR Register, "Triumph TR6 Buyers Guide" (facts sheet), 88.0 in⁠source 3
Ground clearance	152 mm
Fuel tank	11¼ gal Fuel tank, TR6 PI (CR) Good sources disagree. 11¼ galDisputed: Clive Richardson, "The Tale of a TR6", Motor Sport, Nov 1973, p. 54, 'this TR6's claimed 11 1/4 gallons fuel tank exhausted itself at nine gallons' (a 1973 CR)⁠source 10 48.6 LDisputed: British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974, Italy, February 1974⁠source 19 10¾ galDisputed: Clive Richardson, "The continuing tale of a TR6", Motor Sport, Dec 1974, p. 53, Triumph's claim, 'modified' from 11¼ to 10¾ gallons by December 1974 ('the claimed 11-1/4 (a claim since modified to 10-3/4) gallon tank')⁠source 12

Contents

Production

Production: how far the sources agree

13703, TR6 PI, 'Produced for the Home Market - 8370', 'Produced for the Export Market - 5333': Disputed.
13702, '13702 of the total were petrol injection models': Disputed.
just under 14,000, sold outside the US: Disputed.
13912, Roger Williams (2014); equals the CP + CR commission-number spans exactly: Not yet confirmed.
8370, home market (all PI): 'Produced for the Home Market - 8370': Good sources agree.
5333, export PI: 'Produced for the Export Market - 5333': One good source.

13703TR6 PI, 'Produced for the Home Market - 8370', 'Produced for the Export Market - 5333'
TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3
13702'13702 of the total were petrol injection models'
TR Register, "Buyer Beware: TR6" (2 pp. PDF leaflet)⁠source 11
just under 14,000sold outside the US
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)⁠source 4
13912Roger Williams (2014); equals the CP + CR commission-number spans exactly
Wikipedia (DE), "Triumph TR6", 2026⁠source 20
8370home market (all PI): 'Produced for the Home Market - 8370'
TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3; TR Register, "Buyer Beware: TR6" (2 pp. PDF leaflet)⁠source 11; Moss Motoring, "Twenty-Five years of the TR6: A Nostalgic Profile", Oct 1994⁠source 21
5333export PI: 'Produced for the Export Market - 5333'
TR Register, "Triumph TR6 Buyers Guide" (facts sheet)⁠source 3

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

Bill Boddy, "Rumblings" (TR6 PI and 2.5 PI Mk II), Motor Sport, Mar 1971, p. 34, p. 34, "that big, brutish petrol-injection sports car"; the saloon's engine; p. 34. Primary
Standard-Triumph, Triumph TR6 P.I. (sales brochure), UK, Dec 1970, publication 426/1270/ENG, the injection described; p. 11, the specification; the steering lock; "In Britain, Triumph is the first and only manufacturer …"; p. 11, Specification, Engine; 'Petrol injection and the Triumph TR6 P.I.' (heading p. 9, text p. 10); p. 11, Specification, Performance; p. 11, Specification, Capacities; p. 11, Specification, Maximum speed; p. 11, Specification, Acceleration; p. 11, Specification, Steering; p. 11, Specification, Transmission; p. 11, Specification, Optional Extras; p. 11, Specification, Brakes; p. 11, Specification, Suspension; p. 11, Specification, Wheels; p. 11, Specification, Frame; p. 11, Specification, Dimensions. Primary
TR Register, "Triumph TR6 Buyers Guide" (facts sheet), summary and Facts & figures: the PI's markets; Engine details: the de-tune, measured to different standards; Facts & Figures; Engine Details; Performance Data table; Suspension Details; 'Will it fit in the garage?' table; Facts & Figures, 'Manufactured'; Facts & Figures, 'Production Figures TR6 PI'. Reference
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. 1, the PI for the rest of the world; the gearbox change point; p. 2, the CKD list ("CR 1 - 168"); the camshaft, the German exhaust rules, the engine mountings; January 1975; p. 1; p. 3, CKD list; p. 3, technical data (carburetted); p. 5, technical data TR6PI; p. 2; p. 4, Maße und Gewichte; p. 4, Getriebeübersetzungen. Reference
Graham Robson (foreword), Triumph TR6 1969–1976 Parts & Accessories Catalogue, Rimmer Bros, edn 2.2 (source code TR600313), p. 5, the CP and CR series; p. 5, CP25001, the CKD kits, CP25156, CP77718; p. 5, CR1–CR168 and CR5001–CR5048 (kits), CR169, CR6701; 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
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, TR in twilight: PI sales never above about 3,000 a year; the Lucas Mk 2 system: pump, metering unit and injectors; TR in twilight: "the shorter-duration camshaft from the federalized cars"; the rough idle; the injected engine's end; A new bottle: the injected engine never federalised; the SCCA homologation; TR in twilight: the Ford Capri 3000 GT; 'A New Bottle'; 'The BMC-Leyland Merger'. Reference
Vintage Triumph Register, "TR6" (history, year-by-year changes, US production table, buyer's guide), change list: the gearbox, mid-1971; the seven-blade fan from CP52420; change list, '73: camshaft and metering; Spotter's Guide, '76: the last PI; TR6 page, change list '76. Reference
Motor Sport, Readers' letters on the TR6 (group), Feb 1970, p. 54; Jun 1973, p. 94; Aug 1973, p. 77; Jan 1974, p. 57, Feb 1970 p. 54; Jun 1973 p. 94; Aug 1973 p. 77; Jan 1974 p. 57; Feb 1970 p. 54, "TR6 or GT6?"; Jun 1973, p. 94. Primary
Practical Classics, "Buyer's Brief: Triumph TR6", updated 29 Jan 2025, "one of the first mass-produced cars to be offered with fuel injection". Reference
Clive Richardson, "The Tale of a TR6", Motor Sport, Nov 1973, p. 54, p. 54, the de-rating and its reason; "The lion has almost become a lamb"; the rear pick-ups; the overdrive; p. 54, the open-car market; the Jensen-Healey, the Morgan Plus 8 and the Lotus Europa; p. 54. Primary
TR Register, "Buyer Beware: TR6" (2 pp. PDF leaflet), p. 1, overdrive from CR5000; p. 1. Reference
Clive Richardson, "The continuing tale of a TR6", Motor Sport, Dec 1974, p. 53, p. 53, the injection rebuilt; overdrive standard; p. 53, final paragraph; p. 53, para. 3. Primary
Wikipedia (EN), "Triumph TR6", 2026, July 1975, citing Knowles; body text. Unchecked
Charlie Calderwood, "Datsun 240Z vs Triumph TR6: the battle for America", Classic & Sports Car, 1 Feb 2023, California's emissions standards; conservative distributors; factfile, 'Triumph TR6'. Reference
Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, October–November 1975, Oct–Nov 1975 (vol. 21 no. 6), p. 2, Group 44 on carburettors in D Production. Primary
Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, February–March 1975, Feb–Mar 1975 (vol. 21 no. 2), p. 5, the TR-6 now in D Production. Primary
"C.R.", "The Triumph TR7 Drophead" ("Sunshine Seven"), Motor Sport, Apr 1980, p. 35, p. 35 (read by the TR7 agent, notes-tr7.md). Primary
Revington TR, "Technical Specification Change Points" (TR6), change points page. Reference
British Leyland, Triumph TR6 PI (sales brochure), Italy, 2/1974, specification pages, Motore; specification pages, Capacità; specification pages, text ('Un trionfo'); specification pages, Sterzo; specification pages, Cambio; specification pages, Accessori extra; specification pages, Freni; specification pages, Sospensioni; specification pages, Ruote; specification pages, Frizione; specification pages, Dimensioni esterne. Primary
Wikipedia (DE), "Triumph TR6", 2026, lead section. Unchecked
Moss Motoring, "Twenty-Five years of the TR6: A Nostalgic Profile", Oct 1994, text. Reference

Contents