28.01.2020

1980 Triumph Tr7 Owners Manual Download

1980 Triumph Tr7 Owners Manual Download Rating: 4,2/5 9287 votes

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  • TR8 coupes based on the original Harris Mann TR7 design made from 1978 to 1980 are quite rare; it is estimated that only about 400 TR8 coupes ever existed—this number from records kept by members of the North America-based wedge club, the Triumph Wedge Owners Association.
  • Triumph TR 7 Workshop Manuals. If you choose to accomplish auto repairs on your own Triumph TR 7 then it will always be a great idea to have a Workshop Manual to use as reference in case that you need to know tips to take off a particular component for example, the Brake Discs and fit it again correctly.
Triumph TR8
Overview
ManufacturerTriumph Motor Company
Production1978–1981
AssemblySpeke, Merseyside, England
Coventry, West Midlands, England
Solihull, West Midlands, England
Body and chassis
ClassSports car
Body style2-door convertiblecoupe
LayoutFR layout
RelatedTriumph TR7
Powertrain
Engine3,528 cc (3.5 l) V8
Transmission5-speed manual[1]
Dimensions
Wheelbase2,160 mm (85.0 in)[1]
Length4,067 mm (160.1 in)[1]
Width1,681 mm (66.2 in)[1]
Height1,267 mm (49.9 in)[1]
Curb weight1,203.9 kg (2,654 lb)[2]
Chronology
PredecessorTriumph TR7
Triumph TR8

The Triumph TR8 is an eight-cylinder version of the 'wedge-shaped' TriumphTR7sports car, designed by Harris Mann, and manufactured by British Leyland (BL), through its Jaguar/Rover/Triumph (JRT) division. Because of its outstanding performance, the TR8 was often dubbed the 'English Corvette'.[3] The majority of TR8s were sold in the United States and Canada.

Background[edit]

A more powerful V8-engined version of the TR7 was planned in the early stages of the TR7's development, a prototype being produced in 1972.[4] However, British Leyland's financial state, labour problems and lack of engines—as MG and Range Rover had first priority—delayed the project. By 1978 some 145 prototype cars were built with V8 engines (and usually automatic transmissions). These 'anonymous' TR8s (no identifying badges, and all coupes) were evaluated for British Leyland by various dealers and then sold off as used cars.

The FIA papers for the TR8 homologation, granted 1 April 1978, include pictures showing a 1977 TR7 V8 prototype with a set of decals indicating it to be a TR7 V8.[5] However, oddly, these TR8 homologation pictures also show it had the large 'Sprint' decals on the rear wings, in the same font as the TR7 and V8 decals on the boot lid. It is not clear from the picture of the front of the car whether or not it had a small Sprint decal below the TR7 decal, as is shown on the TR8 prototype in Hardcastle’s book on the Rover V8 engine.[6] Neither of these decals are part of the set used on the car shown in the TR7 Sprint homologation pictures in the BMIHT archives,[7] and in Knowles’ Triumph TR7 The Untold Story.[8] And, unlike that decal set, the Sprint decals shown on this TR8 and that in Hardcastle are not known by any BL part numbers. The official use of these pictures in the homologation process may suggest that BL toyed with the idea of calling this car the 'TR7 V8 Sprint' or 'TR7 Sprint V8', etc., at some point, but did not progress the idea beyond when these photographs were taken.

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Description[edit]

The TR8 did not use Triumph's own single overhead cam V8 as found in the Stag due to its weight and service record but instead shared its Rover V8 engine with the Rover SD1. The engine itself was derived from an early 1960s Buick/Oldsmobile all-aluminiumV8 215 cu in (3.52 L) that Rover acquired from General Motors in the mid-60s.

History has shown this engine to be an extremely reliable, flexible, and robust powerplant, especially after BL developed a better manufacturing process. TR8s were initially fitted with twin Zenith-Stromberg carburetors. However, about 400 1980 models sold in California, all 1981 models—of which only 352 were produced including twenty carbed cars for the UK market---and all 1982 models (of which all seventy went to Canada)[9] featured a Bosch L-jetronic fuel injection system with a specially designed Lucas fuel injection computer (ECU).[10] The 1980 carburetor model was rated at 133 bhp (99 kW; 135 PS) (at 5000 rpm) and the fuel injected California version at 137 bhp (102 kW; 139 PS) at the same engine speed.[11] For 1981, all North American cars received a unified version with fuel injection, producing 148 bhp (110 kW; 150 PS) at 5100 rpm and delivering 0–60 mph times in the low 8 seconds.[12][13] Other differences between the TR8 and TR7 are upgraded brakes, revised axle ratio (3.08:1 on the TR8 and all automatic TR7s), battery moved to the trunk (boot), alloy wheels, leather steering wheel and a few minor trim changes.

1980 Triumph Tr7 Repair Manual

Production[edit]

TR8 coupes based on the original Harris Mann TR7 design made from 1978 to 1980 are quite rare; it is estimated that only about 400 TR8 coupes ever existed—this number from records kept by members of the North America-based wedge club, the Triumph Wedge Owners Association. To the roughly 150 pre-production coupes mentioned above, another 250 or so coupes were produced, some sold in Canada as 1979 models but most ended up being held back and then finally sold in the US as 1980 models. In 1979, a long-awaited Michelotti re-designed TR7 Drophead (convertible) was introduced, and all subsequent production TR8s were convertibles.[14]Total worldwide production, as best as can be determined throughout all the labour turmoil at the time, is only around 2750, give or take a 'handful'. (Enthusiast Richard Connew went through the records at British Motor Heritage Industry Trust and counted 2746.) Other estimates exist. The German version of this page claims 2722 and cites the TR Register-Austria as source; 2815 is the number quoted in an article from Classic & Sports Car, March 1986 and in William Kimberley's 1981 book[15] as well. Both the TR7 and TR8 were made until October 1981 when production ceased.

Very few genuine TR8s exist outside of the United States and Canada. In other countries the TR7 is often converted to a 'TR7V8' with the same ubiquitous Buick/Rover 3.5 litre V8 powerplant used in original factory TR8s. In Australia a popular TR7V8 conversion is to use the 4416 cc version of this engine that had been developed for the Leyland P76.

In North America, the TR8 originally sold for around $11,000. A current rough estimate of the number of these cars remaining taken from the Triumph Wedge Owners Association registry of unique VINs, current Triumph Wedge Owners Association membership records, the World Wide TR7 TR8 Owners Club, and the TR Drivers Club UK is around 1000 convertibles and 200 coupes.

As of Q1 2011 there were approximately seventeen licensed and 33 SORN TR8s registered with the DVLA. The accuracy of this data is questionable as many converted TR7s with a V8 have been registered with DVLA as TR8s. Out of these fifty cars, only two are automatic, but more are known to exist.[16][17]

Motorsport[edit]

TR8 racer on display at the Canadian International Autoshow.

Despite their low production numbers, TR8s have an interesting racing history. John Buffum successfully raced one as a rally car in the late 1970s. Bob Tullius of Group 44 fame dominated SCCA racing in 1979 in one, so much so that the SCCA added enough 'reward' weight to the car that Tullius left Trans Am and successfully competed in IMSA GT instead. TR8s ran successfully in the SCCA's showroom stock series being campaigned by Morey Doyle ( Nationals & Regionals) and Ted Schumacher (Nationals). Schumacher with Doyle had great success in the Playboy/Escort Endurance series with his car. Starting the last race of the year, Schumacher was fourth in the overall point standings (just three points away from first) when an accident ruined their chances; nevertheless, Schumacher still ended up seventh in the manufacturer's points for that year, all with no official factory help. Presently, at least three cars are being run in SCCA's ITS class. Morey Doyle and his son Andy run their TR8s in the Midwest Region, currently Morey and his sons, Morey C. and Andy are preparing the car for the SCCA National Runoffs in E-Prod at Indianapolis Motor Speedway (2017). Jeff Young runs his green TR8 in the Southeast Division with numerous regional race wins and the 2011 Southeast Division SARRC ITS championship, running against over seventy other drivers in Mazda RX7s, Miatas, 240/260/280zs, BMW 325is, Porsche 944s and Acura Integras.

The TR8 was homologated for Group 4 (racing) on the first of April 1978. According to the FIA rules that applied at this time, recognition would have required the production of 400 similar cars suitable for normal sale. However, production records (in the BMIHT archives) show that only about 150 cars had actually been built by this time, mostly due to major industrial action at the BL Speke plant that included a 17-week-long strike from November 1977. Rally journalist and historian Graham Robson quotes John Davenport (director of BL Motorsport at the time) as reminding him that 'In those days there was no rigorous FIA inspection system. Provided that one provided production sheets signed by an important manager, then nobody worried..' Robson goes on to state that 'A lot of fast and persuasive talking then went on, to show that the makings of well over 500 [sic] cars were either built, partly built, or stuck in the morass of the Speke strike'.[18][19][20][21] However, the FIA rules are clear that only complete cars may be counted towards this requirement.[22]

1980 Triumph Tr7 For Sale

Unlike the papers for the TR7 homologation in 1975, those for the TR8 homologation in 1978 do not give a production number achieved or a date for this.[5] Hence, it is unclear how many prototype TR8s the FIA believed had been finished. However, it is also well recorded that the Ford Escort RS1800 was re-homologated directly into group 4 in 1977 when there were only ever about 108 produced, and it is possibly only the 50 (X0 marked cars) produced in 1977 were relevant - the cars were required to have been produced within 24 months, and the group 4 Escort RS was homologated with the 1975 cc version of the BDA engine.[23][22][24]

It appears then, that where a group 4 car was a modification to an existing approved car, as the TR8 was to the TR7, the FIA were able to grant approval on a much smaller number of cars than the 400 stated in the homologation requirements, possibly only about 50 cars. This also appears to apply to the Vauxhall Chevette HSR, Porsche 924 Carrera GTS, and Triumph TR7 Sprint (for the re-approval of the 16-valve head, to allow its continued use into 1978, following a change to the FIA homologation rules), where it is clear that the FIA could not have been persuaded that 400 cars had been or would ever be produced.

The TR8 was not a production car in April 1978 and did not go on sale in North America until mid-1979. According to Graham Robson, the Group 4 rally car was therefore called the TR7V8 as a compromise with BL Sales and Marketing.[21]

References[edit]

  1. ^ abcde'1979 Triumph TR8'. carfolio.com. Retrieved 1 January 2008.
  2. ^'1980 Triumph TR8 DHC'. conceptcarz.com. Retrieved 1 January 2008.
  3. ^'Triumph TR8 3.5 V8'. www.autosnout.com. Retrieved 9 November 2012.
  4. ^William Kimberley, The Complete Guide to the Triumph TR7 and TR8, Chap. 3, 1981
  5. ^ abFIA Book of Recognition number 654
  6. ^Hardcastle D., The Rover V8 Engine, J H Haynes & Co Ltd; 2nd Revised edition (15 May 1995), ISBN978-0854299614.
  7. ^Negatives from number T105512 to T105517 (6 negatives), 'TR7 Sprint Homologation', British Motor Industries Heritage Trust Film & Picture Library.
  8. ^Knowles D., Triumph TR7 The Untold Story, 2007, pages 110–5, Crowood Press, ISBN978-1-86126-891-4.
  9. ^'The 1982 Model Year TR7's & 8's'. www.tr8.com. Retrieved 9 November 2012.
  10. ^'FI Production Numbers, Spring 2012 Newsletter of the Triumph Wedge Owners Association'(PDF). www.triumphwedgeowners.org. Retrieved 8 April 2013.
  11. ^Hogg, Tony (ed.). 'Good news from the other side'. Road & Track's Road Test Annual & Buyer's Guide 1981. No. January–February 1981. CBS Publications. pp. 190–191.
  12. ^Hogg, Tony (ed.). '1981 Buyer's Guide'. Road & Track's Road Test Annual & Buyer's Guide 1981. No. January–February 1981. CBS Publications. p. 124.
  13. ^'Factory Brochure, Jaguar Rover Triumph'. April 1980.Cite journal requires journal= (help)
  14. ^Bill Piggott, Original Triumph TR7 & TR8, MBI Publishing, 2000
  15. ^William Kimberley, The Complete Guide to the Triumph TR7 and TR8, Dalton Watson Ltd., London, 1981
  16. ^'How Many Left web site'. www.howmanyleft.co.uk. Retrieved 17 July 2011.
  17. ^'Vehicle licensing statistics'. Department of Transport. Archived from the original on 29 August 2011. Retrieved 17 July 2011.
  18. ^FIA, Appendix J to the International Sporting Code 1976: Classification, definition and specifications of cars, 11 December 1975, Article 252, clause g.
  19. ^British Motor Industries Heritage Trust Archives, Heritage Motor Centre, Gaydon, Warwickshire, England.
  20. ^Marren, Brian (2009). 'Closure of the Triumph TR7 Factory in Speke, Merseyside, 1978: 'The Shape of Things to Come'?'. Archived from the original on 20 August 2010. Retrieved 16 July 2010.Cite journal requires journal= (help)
  21. ^ abRobson G., The Works Triumphs: 50 Years in Motorsport, 1993, J H Haynes & Co Ltd, ISBN978-0854299263.
  22. ^ abFIA, Appendix J to the International Sporting Code 1976: Classification, definition and specifications of cars, 11 December 1975.
  23. ^FIA Book of Recognition number 650
  24. ^Robson G., 'Ford Escort RS1800' Rally Giants, page 30, Veloce Publishing Ltd, 2008, ISBN1845841409, 9781845841409.
  • Adams, Keith. 'The Unofficial Austin Rover Web Resource'. Archived from the original on 30 September 2010.

External links[edit]

1980 Triumph Tr7 Owners Manual Download
Wikimedia Commons has media related to Triumph TR8.
Triumph Motor Company timeline, 1946 to 1984 — a marque of British Leyland
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Small family carMayflowerHerald
ToledoAcclaim
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VitesseDolomite
Large family car1800 Town & Country2000 SaloonRenown2000 / 2.5 PI2000 / 2.5 PI / 2500
ConvertibleStag
Grand tourerItaliaGT6
Sports carSpitfire
RoadsterTR2TR3TR3ATR3BTR7
TR4TR4A
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Prototypes and cancelled projects:
Retrieved from 'https://en.wikipedia.org/w/index.php?title=Triumph_TR8&oldid=918281915'

Complete coverage for your vehicle

Written from hands-on experience gained from the complete strip-down and rebuild of a Triumph Cars TR7, Haynes can help you understand, care for and repair your Triumph Cars TR7. We do it ourselves to help you do-it-yourself, and whatever your mechanical ability, the practical step-by-step explanations, linked to over 900 photos, will help you get the job done right. Regular servicing and maintenance of your Triumph Cars TR7 can help maintain its resale value, save you money, and make it safer to drive.

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Table of contents

Introduction
Chapter 1: Engine
Chapter 2: Cooling system
Chapter 3: Fuel and carburetion, exhaust and emission control systems
Chapter 4: Ignition system
Chapter 5: Clutch
Chapter 6: Manual gearbox and automatic transmission
Chapter 7: Propeller shaft
Chapter 8: Rear axle
Chapter 9: Braking system
Chapter 10: Electrical system and wiring diagrams
Chapter 11: Suspension and steering
Chapter 12: Bodywork and fitting
Chapter 13: Supplement

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