Car Specs

1978 Triumph TR7 5-speed

Information

Triumph

Quick Facts

Build Start: 1978

Available in other variants

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Specifications

General

Build Start: 1978
Model Variant: TR7

Dimensions

Track/tread (front): 1410mm
Length: 4067mm
Height: 1267mm
Fuel Tank Capacity: 55litres
Wheelbase: 2160mm
Track/tread (rear): 1410mm
Width: 1681mm
Ground clearance: 90mm
Kerb weight: 1048kg

Body Details

Body Type: 2 seater fixed-head coupé

Engine Details

Crankshaft Bearings: 5
Catalytic converter: N
Engine Layout: longitudinal
Top Gear Ratio: 0.83
Engine Manufacturer: Triumph
Capacity: 2 litre (1998cc)
Bore/stroke ratio: 1.16
Sump: wet sumped
Engine Coolant: Water
Aspiration: Normal
Engine Position: front
Gearbox: 5 speed manual
Final Drive Ratio: 3.90
Engine Type: naturally aspirated petrol
Cylinders: Straight 4
Bore × Stroke: 90.3 × 78mm
Specific output(DIN): 52.6 bhp/litre0.86 bhp/cu in
Specific torque(DIN): 80.58 Nm/litre, 0.97 ft·lb/cu3
Compression Ratio: 9.25:1

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Performance

Weight-to-power ratio: 13.38kg/kW
maximum power output(DIN): 106 PS (105 bhp) (78 kW)at 5500 rpm
maximum torque(DIN): 161 Nm (119 ft·lb) (16.4 kgm)at 3500 rpm
Power-to-weight ratio: 101.58 PS/tonne (1000 kg)
Drive Wheels: rear wheel drive

Fuel Consump.

Fuel system: 2 SU carbs

Chassis & Geomtry

Front Suspension: I.MS.LW.ARB.
Length:Wheelbase Ratio: 1.88
Turns Lock-to-Lock: 3.870
Rear suspension: LA.TA.STA.CS.ARB.

Brakes

Brakes F/R: Di/Dr-S
bmep (brake mean effective pressure): 1012.6kPa

Other

Unitary Capacity: 499.5cc
Steering: rack & pinion
Designer: Harris Mann
RAC rating: 20.2
Number of doors: 2
Valve Gear: single overhead camshaft (SOHC), 2 valves per cylinder, 8 valves in total

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