HOME
images/iacf3.jpg

Triumph TR6

Tires

Original Michelin redliners 185/15? Or, should you choose 215/65/15?

Online

Shop

Land's End
Registration#”1617508” Customer#“4853648”
or visit  Cafe Press
 

Register

VTR

Vintage Triumph Register. Car club of over 2,800 Triumph owners/enthusiasts

JOIN

TODAY

Become a member of our Green Country Triumphs Car club located in NE Oklahoma.
 

 

  • 01

    1800

    Roadster

     
    A vehicle designed to take on the Jaguar. Steel shortages meant most of the body was built from aluminium. Using a Standard 1.5 litre engine, the Triumph version featured a downdraught Solex carburettor instead of the Jaguar's side-draught SU.
    Read More...
    02

    2000

    Roadster

     
    The 1800 Roadster, model number 18TR,[1] was designed in the closing days of World War II.[5] Triumph had been bought by the Standard Motor Company in 1944,[5] and the managing director of Standard, Sir John Black, wanted a sports car to take on Jaguar.
    Read More...
  • 03

    TR2

    Triumph

     
    The Triumph TR2 is a sports car produced by the Standard Motor Company in the United Kingdom between 1953 and 1955. It was only available in roadster form.
    Read More...
    04

    TR3

    Triumph

     
    The Triumph TR3 is a British sports car produced between 1955 and 1962 by the Standard-Triumph Motor Company of Coventry, England. The TR3 is an evolution of the company's earlier TR2 model.
    Read More...
  • 05

    TR4

    Triumph

     
    The Triumph TR4 is a sports car produced by the Triumph Motor Company from 1961 to 1965. As the successor to the TR3A, the car was based on the chassis and drivetrain of the previous TR sports cars
    Read More...
    06

    TR5

    Triumph

     
    The Triumph TR5 is a sports car built by the Triumph Motor Company in Coventry, England, between August 1967 and September 1968. Visually similar to the Michelotti-designed TR4 roadster it was derived from the TR5.
    Read More...
  • 07

    TR250

    Triumph

     
    A vehicle designed to take on the Jaguar. Steel shortages meant most of the body was built from aluminium. Using a Standard 1.5 litre engine, the Triumph version featured a downdraught Solex carburettor instead of the Jaguar's side-draught SU.
    Read More...
    08

    TR6

    Triumph

     
    The Triumph TR6 (1968–76) is a sports car built by British Triumph Motor Company between 1969 and 1976. The TR6 was introduced in January 1969 and produced until July 1976.
    Read More...
  • 09

    Spitfire

    Mark I-IV

     
    The Spitfire was conceived by Standard-Triumph to compete in the small sports car market against the Austin-Healey Sprite. The Sprite had used the drive train of the Austin A30/A35 in a lightweight. The Spitfire used mechanicals from the Herald saloon/sedan.
    Read More...
    10

    Spitfire

    1500

     
    In 1973 in the United States and Canada, and 1975 in the rest of the world, the 1500 engine was used on the MK IV body to make the Spitfire 1500.
    Read More...
  • 11

    TR7

    TRIUMPH

     
    The Triumph TR7 sports car was manufactured in the United Kingdom from September 1974 to October 1981, until May 1975, by the Rover-Triumph Division of the British Leyland Motor Corporation (BLMC) and, thereafter, by the Specialist Division.
    Read More...
    12

    TR8

    TRIUMPH

     
    The Triumph TR8, eight-cylinder version of the "wedge-shaped" Triumph TR7 sports car was 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".
    Read More...
  • 13

    GT6

    TRIUMPH

     
    The Triumph GT6 is a 6-cylinder sports coupé built by Standard-Triumph, based on their popular Triumph Spitfire convertible. Production ran from 1966 to 1973.
    Read More...
    14

    STAG

    TRIUMPH

     
    The Triumph Stag is a 2+2 sports tourer which was sold between 1970 and 1978 by the Triumph Motor Company, styled by Italian designer Giovanni Michelotti. Envisioned as a luxury sports car, the Stag was designed to compete directly with the Mercedes-Benz SL class models.
    Read More...

The Triumph TR4 is a sports car produced by the Triumph Motor Company from 1961 to 1965. As the successor to the TR3A, the car was based on the chassis and drivetrain of the previous TR sports cars, but with a modern body designed by Michelotti.

In spite of its modern styling, a total of only 40,253 cars were built during its 5-year production run. In comparison, the TR2 sold 8,635 units in its 3-year run from 1953–1955; 74,800 TR3s in an 8-year run from 1955 to 1962; 94,500 TR6s in an 9-year run from 1968–1976,; and 111,500 TR7s over a 7-year run from 1975–1981.[4]

Styling and coachwork[edit]

Code named "Zest" during development, the new TR4 body style did away with the cutaway door design of the previous TRs to allow for wind-down (roll-up) windows in place of less convenient side-curtains. The angular rear allowed a boot (trunk) with considerable capacity for a sports car.

 
1964 TR4 with "Surrey Top" backlight

Advanced features included the use of adjustable fascia ventilation, and the option of a unique hard top that consisted of a fixed glass rear window (called a backlight) with an integral rollbar and a detachable, steel centre panel (aluminium for the first 500 units). This was the first such roof system on a production car and preceded by five years the Porsche 911/912 Targa, which has since become a generic name for this style of top.

On the TR4 the rigid roof panel was replaceable with an easily folded and stowed vinyl insert and supporting frame called a "Surrey top". The entire hard top assembly is often mistakenly referred to as a Surrey top. In original factory parts catalogues the rigid top and backlight assembly is listed as the Hard Top kit. The vinyl insert and frame are offered separately as a Surrey top.

Features such as wind-down windows were seen as a necessary step forward to meet competition and achieve good sales in the important US market, where the vast majority of TR4s were eventually sold. Dealers had concerns that buyers might not fully appreciate the new amenities, therefore a special short run of TR3As (commonly called TR3Bs) was produced in 1961 and '62.

As of Q3 2020 there were approximately 917 licensed and 223 SORN TR4s registered with the DVLA.[5][6]

Engineering[edit]

The pushrod Standard inline-four engine, was designed for use by the Ferguson TE20 tractor. The TR4 engine was continued from the earlier TR2/3 models, but the displacement was increased from 1991cc to 2138 cc in the TR4 by increasing bore size. Gradual improvements in the manifolds and cylinder head allowed for some improvements culminating in the TR4A model. The 1991 cc engine became a no-cost option for those cars destined to race in the under-two-litre classes of the day. Some cars were fitted with vane-type superchargers, as the three main bearing engine was prone to crankshaft failure if revved beyond 6,500 rpm; superchargers allowed a TR4 to produce much more horsepower and torque at relatively modest revolutions. The standard engine produced 105 bhp (78 kW) SAE but, supercharged and otherwise performance-tuned, a 2.2-litre I4 version could produce in excess of 200 bhp (150 kW) at the flywheel. The TR4, in common with its predecessors, was fitted with a wet-sleeve engine, so that for competition use the engine's cubic capacity could be changed by swapping the cylinder liners and pistons, allowing a competitor to race under different capacity rules (i.e. below or above 2 litres for example).

 
Late TR4 engine layout, showing twin Zenith Stromberg carburetors and short neck radiator

Other key improvements over the TR3 included a wider track front and rear, slightly larger standard engine displacement, full synchromesh on all forward gears, and rack and pinion steering. In addition, the optional Laycock de Normanville electrically operated overdrive could now be selected for second and third gears as well as fourth, effectively providing the TR4 with a seven-speed manual close ratio gearbox.

The TR4 was originally fitted with 15x4.5" disc wheels. Optional 48-lace wire wheels could be ordered painted the same colour as the car's bodywork (rare), stove-enamelled (matte silver with chrome spinners, most common) or in matte or polished chrome finishes (originally rare, but now more commonly fitted). The most typical tyres originally fitted were 590-15 bias ply or optional radial tyres. In the US at one point, American Racing alloy (magnesium and aluminium) wheels were offered as an option, in 15x5.5" or 15x6" size. Tyres were a problem for original owners who opted for 60-spoke wire wheels, as the correct size radial-ply tyre for the factory rims was 155–15, an odd-sized tyre at the time only available from Michelin at considerable expense. Some original TR4 sales literature says the original radial size was 165–15. The much more common 185-15 radials were too wide to be fitted safely. As a result, many owners had new and wider rims fitted and their wheels re-laced.

In motorsport[edit]

The TR4 had a number of racing successes in America, primarily through the efforts of the Californian engineer Kas Kastner and his top driver, Bob Tullius. In 1961 the TR4 won first in class and thirtieth overall at Sebring. That car was driven by George Waltman and Nick Cone. The serial number of that TR4 is CT 7L. In 1962 the TR4 won the E production national championship, following which the SCCA reclassified the car to D production, and Tullius won that class title in 1963 and '64. Soon after the TR4 was introduced, Kastner along with Mike Cook, who was in the advertising department at Triumph in New York City, convinced the company to provide three new TR4s to race in the 12 Hours of Sebring race in 1963. Beginning in September 1962 the cars were prepared in California, where Kastner was service supervisor for Triumph. The cars were then flown to Florida for the endurance race in March 1963. These cars were driven by Mike Rothschild and Peter Bolton from England, Bob Tullius, Charlie Gates, Ed Deihl, Bob Cole, Bruce Kellner and Jim Spencer and finished overall 22nd, 24th, and 35th of 65 entries, and first, second and fourth in the 2.5 GT class. This was the beginning of the Triumph Competition Department Kastner headed for several years and used to publicize and market the TR4. The next year a privateer TR4 finished dead last in the 1964 running of the Sebring 12-hour race and Kas Kastner returned to Sebring in 1966 with four carefully prepared TR4As, three of which finished winning the class. In 1966 at Sebring, Tullius threw a piston in the most highly tuned car and did not finish. Perhaps the greatest racing victory for the TR4A was at Daytona, where a Kastner-prepared car driven by Charlie Gates won the 1965 SCCA D modified championship against Ferraris and other prepared race car exotics.

The TR4 continues to be raced in vintage sports car events and even won an SCCA class championship as late as 1991. In Australia the TR4 was a common sight at hill-climb events and various club rallies and circuit racing events. In 1964 the factory sponsored Team Triumph entered three TR4s in the Canadian Shell 4000 rally. These "works" cars were reportedly built with gussets on the chassis members and aluminum body panels to strengthen and lighten the car. After import, the engines were prepared by Kastner in New York, where they were also fitted with lightweight magnesium wheels. Although they did not place well in the rally, the surviving cars have become quite valuable, one of which is owned by Neil Revington, the proprietor of Revington TR in the UK. Indeed, the TR4 became a celebrated rally car in Europe and the UK during early to mid-sixties, and various replicas are still campaigned by privateers in vintage rally events throughout Europe.

TR4A[edit]

In 1965, the TR4A with IRS or independent rear suspension superseded the TR4. Apart from the rear suspension, which used trailing arms and a differential bolted to the redesigned chassis frame and a number of small styling changes and refinements, the two models appear nearly identical. In fact, an estimated 25 per cent of TR4As were not equipped with IRS, but instead reverted to a live axle design similar to the TR4, which was adapted to fit the new chassis.

Dové GTR4[edit]

Perhaps the rarest production TR4 model is the Dové GTR4 (and GTR4A) – a TR4 rebuilt as a coupé by a specialist coachbuilder for the Dove dealership in Wimbledon, London; only 43 were produced. The conversions were by Harrington Motor Bodyworks, mostly known for construction of the Harrington Alpine, a similarly converted Sunbeam Alpine. Although most were based on the TR4 model, the sales brochure pictures a TR4A version of these cars. The engines came with such period extras as a heater in the water jackets to assist early morning starts. Some were fitted with fully balanced motors by Jack Brabham Motors or Laystall Engineering in London, which was offered as an option in the sales catalogue. Two jump seats were placed behind the driver's seat using identical materials to the originally equipped standard TR4. A wood-rimmed wheel with riveted perimeter was fitted to some models along with auxiliary lamps under the front bumper bars. A metallised identifying sticker with "Dové" on it was fitted to the glovebox lid. On the rear deck to the left below the lid, was another identifying badge with the Dové logo. The side window glasses were specially shaped with a flat top edge to fit the new roof line. Each Dové was an individual order and some variation occurred in each car. Tinted swing-down see-through acrylic sun visors were custom fitted. The aerodynamics of the Dové gave it good acceleration from 80 mph (130 km/h) to 100 mph (160 km/h) in comparison with the standard version of the car. They were originally conceived by L.F. Dove & Co. as their attempt to fill the GT category for Europe, hence the French nomenclature with an inflection at the end of the word Dové. The cars were priced at £1250, on the high, uncompetitive side. One example was exported for sale through Australian Motor Industries in Melbourne, Australia. A road test of one of these cars was reported in Autocar magazine dated 7 June 1963. Up to a dozen of the cars are known to still exist.[citation needed]

Specifications[edit]

  • Cost When New - £1095
  • Top Speed - 110 mph (180 km/h)
  • Power - 100 bhp (74.6 kW) at 4,600 rpm[7]
  • Torque - 1529 lb/in (127 lb/ft)[7]
  • Overall Fuel Consumption - 22.5 miles per imperial gallon (12.6 L/100 km; 18.7 mpg‑US)
  • Axle Ratio - 3.7:1 (4.1:1 optional)[7]
  • Unladen Weight - 2,128 lb (965 kg)[7]

Performance[edit]

Speed Time[8]
0 - 30 mph (48 km/h) 3.7 s
0 - 50 mph (80 km/h) 8.3 s
0 - 60 mph (97 km/h) 10.9 s
0 - 80 mph (130 km/h) 20.9 s
0 - 90 mph (140 km/h) 28.2 s
0 - 100 mph (160 km/h) 46.3 s

References[edit]

  1. ^ Australian Hardtops Retrieved on 30 March 2012
  2. ^ Trummel, Reid (March 2013). "1961 Triumph TR4". Sports Car Market25 (3): 42.
  3. Jump up to:a b c d e f "1961 Triumph TR4"carfolio.com. Retrieved 1 January 2008.
  4. ^ TR for Triumph, Chris Harvey, 1983, ISBN 0 902280 94 5
  5. ^ "How Many Left web site". howmanyleft.co.uk. Retrieved 17 July 2011.
  6. ^ "Vehicle licensing statistics". Department of Transport. Archived from the original on 29 August 2011. Retrieved 17 July 2011.
  7. Jump up to:a b c d Triumph TR4 Owners Handbook. Standard Triumph Sales Ltd. 6th Edition. 1961. p. 60. ISBN 0 948207 66 3.
  8. ^ "Triumph TR4". Autocar. 5 January 1962. pp. 6–10.

Advance Auto Wire

Color Codes
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Read more...

TR250 - TR6 Wiring

Laminated poster diagrams available in 11x17 or 18x24. Select your vehicle
TRIUMPH WIRING POSTER

Triumph Quarter Mile

Comprehensive index of Triumph car 0 to 60 car specs

0 to 60 mph

Triumph TR4, Spitfire, GT6, TR7, Herald, Renown, Vitesse and many more!
Triumph Quarter Mile

6-PACK

 

What do we do?

Good question…

6-Pack is a single marque club dedicated to ownership of the Triumph TR6 and TR250 vehicles manufactured from 1968 to 1976.

We offer free forums for technical advice and a paid club with a periodical and the ability to attend the club get together – the Trials – the largest single event gathering of TR6 and TR250s in the US.

ROUTE 66 WRAPS AND SIGNS

Owner Steve Howie is a good friend. He is very experienced and I highly recommend him. He offers a variety of services from car wraps to plasma cutting. Location:
3332 South Sante Fe Ave, Tulsa, OK
Phone: (918) 347-1386.

S5 Accordion Menu

EVENTS

TWS Gathering

June
Thursday
9
TWS Gathering - June 9-12 2022 - West Dover VT, USA
Join us for a relaxing 4 days in beautiful Vermont full of driving events, dinners, drives and socializing with friends. This year we are expecting a large group of Land Rovers from the 80's, 90's and early 2000's to come, along side our nor…

Breakfast

June
Saturday
11
Monthly Breakfast Outing Crescent Café in Prattville / Sand Springs with Denny & John

Triumph Register

June
Monday
20
TRA 2022 Events

Events Overview as of October, 2021
 
The events below are proposed events that are being developed for TRA 2022.   This page will be continuously updated.

                                                                 
Monda…

BUYERS GUIDE


The Triumph TR6 has been a cornerstone of the sports car world. However, more than 40 years old, it might have an issue or two.

Read More...

PARTS


Here are a few recommended places to buy Triumph parts:

Moss Motors
The Roadster Factory
Good Parts
Rimmer Bros

Classifieds


Much time invested on this TR4 Dash.
Reasonable price for this trailer
Set of TR6 beauty rims for sale

Classifieds

EVENTS

<<  <  May 2022  >  >>
 Mo  Tu  We  Th  Fr  Sa  Su 
      
  2  3  4  5  6  8
  91011121315
161819202122
23242526272829
3031     

Disclaimer

Welcome to greencountrytriumphs.com. The greencountrytriumphs.com website is comprised of various web pages operated by Green Country Triumphs. Greencountrytriumphs.com is offered to you conditioned on your acceptance without modification of the terms and conditions provided upon request. Your use of greencountrytriumphs.com constitutes your agreement to all such Terms.

Contact a Triumph Club Member
Contact us if you have any questions


Contact a Triumph Club Member