HOME
The Info List - Triumph TR5





The Triumph TR5
Triumph TR5
is a sports car built by the Triumph Motor Company
Triumph Motor Company
in Coventry, England, between August 1967 and September 1968.[1] Visually similar to the TR4 (also styled by Michelotti),[2] the TR5 roadster sported Triumph's much more powerful 2.5-litre straight-6, fitted with Lucas mechanical fuel-injection and producing 150 bhp (110 kW). Price pressures and tighter emissions standards in the U.S. resulted in a much less powerful carburetted version, the TR250, being sold on the North American market. At the time, fuel injection was uncommon in road cars. Triumph claimed in their sales brochure that it was the "First British production sports car with petrol injection".[3][4]

Contents

1 TR5

1.1 Specifications 1.2 Performance 1.3 Production

2 TR250

2.1 Specifications 2.2 Production

3 Gallery 4 References

TR5[edit] Standard equipment included front disc brakes, independent rear suspension, rack and pinion steering and a four speed gearbox. Optional extras included overdrive and wire wheels. In 1968 the basic price of the TR5 in the UK was £1,260 including taxes, with wire wheels being another £38, overdrive £60 and a tonneau cover another £13.[4] The TR5 was available with the "Surrey Top" hard top, a weather protection system with rigid rear section including the rear window and removable fabric section over the driver and passenger's heads. A curious feature of the TR5/Lucas petrol injection system was the very frequent occurrence of an intermittent power failure when the fuel tank was no more than a quarter full. In order to provide fresh fuel at the distributor, free from overheating/soak, unused fuel was returned to the tank where it entered very close to the high pressure fuel pump. When the fuel level fell below critical (about 3 gallons), sloshing would cause the pump to pick up a slightly aerated mixture which was sent to the fuel distributor. Unused fuel (still aerated) then passed back to the tank and was discharged close to the pump, a proportion of it being picked up and recycled to the distributor. As this cycle was repeated, gradually the volume of air in the pumped fuel reached a level where it began to affect the running of the engine. Adding as little as one gallon to the tank seemed to cure the problem. The similarly engineered contemporary saloon overcame this problem with a petrol tank specially designed for the fuel injected model. This incorporated an anti-slosh cup to ensure that the fuel outlet remained covered with fuel when the tank level was low. Specifications[edit] Taken from the UK sales brochure.[3]

Engine: 2498 cc, 6 cylinder, 74.7 mm bore, 95 mm stroke, 9.5:1 compression ratio, 150 bhp (110 kW) Turning circle: 10.1 m (33.1 ft) Ground clearance: 152 mm (6.0 in) Luggage capacity:

Max width: 1,180 mm (46.5 in) Max height: 510 mm (20.1 in)

Capacities:

Fuel tank: 51 litres (11.22 imp gal; 13.47 US gal) Engine
Engine
sump: 4.53 litres (1.00 imp gal; 1.20 US gal) Gearbox: 1.13 litres (0.25 imp gal; 0.30 US gal)

Acceleration in top:

30 to 50 mph: 7 s 40 to 60 mph: 7 s 60 to 80 mph: 8 s

Standing 0.25 miles (0.40 km) : 16.5 s Gear ratios:

  Top 3rd 2nd 1st Rev.

Ratios 1.0 1.33 2.01 3.14 3.22

Overall 3.45 4.59 6.94 10.83 11.11

Available colours:[1]

Paint Trim

New White Black / Matador Red

Triumph Racing Green Black, Light Tan

Signal Red Black

Jasmine Yellow Black / Light Tan

Royal Blue Black / Shadow Blue

Valencia Blue Black / Light Tan

Performance[edit] The fuel-injected engine could propel the TR5 from 0–50 mph (80 km/h) in 6.5 seconds, reaching a top speed of 125 mph (201 km/h).[3] Road tests at the time reported slightly different performance figures:[5]

  Sports Car World October 1968 Cars & Car Conversions September 1968 Motor 4 May 1968

0-50 mph (80 km/h) 6.2 s 6.4 s 6.3 s

Top Speed 118 mph (190 km/h) 112 mph (180 km/h) 117 mph (188 km/h)

The TR5 engine was carried forward to the TR6. Production[edit] The TR5 was produced in small numbers when compared with the later TR6, with just 2,947 units produced; the first car was assembled on 29 August 1967 and the last on 19 September 1968. Of these, 1,161 were destined for the UK market,[6] the remainder were left hand drive and were exported to France, Belgium and Germany amongst other countries. In the first quarter of 2011 there were approximately 410 licensed and 74 SORN
SORN
TR5s registered with the DVLA.[7][8] TR250[edit] The Triumph TR250
Triumph TR250
was built during the same period for the North American market. Price pressures and tighter emission regulations resulted in twin Zenith-Stromberg carburettors being fitted instead of the TR5's Lucas fuel injection system. Otherwise it is nearly identical. The TR250's engine delivered 111 bhp (81 kW), 39 bhp less than the TR5; 0–60 mph (0–97 km/h) acceleration took 10.6 seconds.[2][9] The TR250 was also available with the Surrey Top system. In 1968, the TR250 sold in North America for approximately $3,395, with wire wheels a $118 option, overdrive $175, and air conditioning $395.[10] Specifications[edit] Engine:

2,498 cc, inline-six cylinder, 74.7 mm (2.9 in) bore, 95 mm (3.7 in) stroke, 8.5:1 compression ratio, 111 bhp (83 kW; 113 PS) at 4,500 rpm

Turning circle: 10.1 m (33 ft) Capacities:

Fuel tank: 61 L (13.5 imp gal) Engine
Engine
sump: 5.4 L (9.64 imp pt) Gearbox: 1.13 L (2 imp pt)

Performance:

0 to 60 mph (97 km/h): 10.6 seconds[11]

0 to 100 mph (160 km/h): 39 seconds Fuel consumption: 23.5 miles per US gallon (10.0 L/100 km; 28.2 mpg‑imp) [11]

Production[edit] A total of 8,484 TR250s were built for the U.S market.[1][12] Approximately 600 remain worldwide today, and many can now be found outside the United States, primarily in Europe. Gallery[edit]

Wikimedia Commons has media related to Triumph TR5.

Triumph TR5

1968 TR5 front quarter view

1968 TR5 interior

1968 TR5 engine bay

1968 TR5 rear quarter view

TR5 with hardtop fitted

TR250

TR250 Surrey Top

References[edit]

^ a b c Piggott, Bill. Original Triumph TR. ISBN 1-870979-24-9.  ^ a b TR for Triumph, Chris Harvey, ISBN 0-902280-94-5 ^ a b c Original UK sales brochure, 387/168/UK ^ a b "Motor Magazine". Vol. 133 no. 3437. 4 May 1968.  ^ Clarke, R. M. Triumph TR4, TR5, TR250. ISBN 0-948207-53-1.  ^ Richards, Michael. Triumph TR4, 5, 6. ISBN 0-85429-816-9.  ^ "Triumph Tr5". How Many Left. Retrieved 27 June 2011.  ^ "Vehicle licensing statistics". Department of Transport. Retrieved 27 June 2011.  ^ "Road and Track". December 1967.  ^ Motor Trend Magazine, April 1968 ^ a b Bryant, Thomas L. (June 1977), "Driving Impressions: TR3A & TR250", Road & Track  ^ Original Triumph TR, Bill Piggott, ISBN 1-870979-24-9

v t e

British Motor Holdings and British Leyland
British Leyland
cars, 1966–1986

Austin Austin-Healey Daimler Jaguar Land Rover† Leyland Mini MG Morris Princess Riley Rover† Triumph† Vanden Plas Wolseley

Austin

A40 Farina A60 Cambridge A110 Westminster Mini Mini
Mini
Moke 1100 / 1300 1800 / 2200 (ADO17) Sprite 1800 / 2200 (ADO71) 3-Litre Maxi Allegro Ambassador Mini
Mini
Metro Maestro Montego Tasman Kimberley Victoria

Austin-Healey

3000 Sprite Mk IV

Daimler

Majestic Major DR450 2.5 V8 & V8-250 Sovereign Double Six DS420

Jaguar

2.4, 3.4 & 3.8 Litre 240 & 340 S-Type 420 420G E-Type XJ6 XJ12 XJS

Land Rover†

Series II & III 90, 110 and 127 Range Rover

Leyland

Mini Moke Marina P76

MG

Magnette Mark IV MGB MGC Midget 1100/1300 Metro Maestro Montego

Mini

850 1000 1275GT Clubman Cooper Moke

Morris

Minor Morris Oxford Farina Mini 850 Mini
Mini
Moke 1100 / 1300 1800 / 2200 (ADO17) 1800 / 2200 (ADO71) Marina Ital 1500 Nomad

Princess

1700 / 1800 / 2000 / 2200

Riley

Elf 4/72 Kestrel / 1300

Rover†

3.5 Litre / 3½ Litre (P5) 2000 / 2200 / 3500 (P6) 2000 / 2300 / 2400 / 3500 / V8-S / Vitesse (SD1) Quintet 213 & 216

Triumph†

Herald Spitfire Vitesse GT6 Stag TR5 TR250 TR6 TR7 TR8 Toledo 1300 1500 2000 2.5 & 2500 Dolomite Acclaim

Vanden Plas

4-Litre Princess Limousine Princess 4-litre "R" Princess 1100/1275/1300 1500/1.5/1.7

Wolseley

16/60 6/110 Hornet 1100 / 1300 18/85 / Six Saloon

†Rover, Land Rover, and Triumph were not part of British Motor Holdings but became part of British Leyland
British Leyland
in 1968.

v t e

Triumph Motor Company
Triumph Motor Company
timeline, 1946 to 1984 — a marque of British Leyland

type 1940s 1950s 1960s 1970s 1980s

6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4

Small family car

Mayflower

Herald

Toledo

Acclaim

TR-10

1300 1500 1500 TC

Vitesse Dolomite

Large family car 1800 Town & Country 2000 Saloon Renown

2000 / 2.5 PI 2000 / 2.5 PI / 2500

Convertible

Stag

Grand tourer

Italia

GT6

Sports car

Spitfire

Roadster

TR2 TR3 TR3A TR3B

TR7

TR4 TR4A

TR5 TR6

TR8

TR250

Prototypes and cancelled projects:

TR-X 20

.