Key facts

1965 Triumph TR4A information summary

What body style?
convertible/cabriolet with 2 seats
How long?
3962 mm
How heavy?
1016 kg
What size engine?
2.1 litre, 2138 cm3
How many cylinders?
4, Straight
How much power?
105 PS / 104 bhp / 78 kW @ 4700 rpm
How much torque?
179 Nm / 132 ft.lb / 18.3 kgm @ 3000 rpm
How fast?
175 km/h, 109 mph

Triumph

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1965 Triumph TR4A technical specifications

Introduction

The Triumph TR4A is a convertible/cabriolet with 2 doors and a front mounted powerplant which transmits its power through the rear wheels.
The Triumph TR4A's engine is a naturally aspirated petrol, 2.1 litre, overhead valve 4 cylinder with 2 valves per cylinder. In this application it produces 104 bhp (105 PS/78 kW) of power at 4700 rpm, and maximum torque of 179 N·m (132 lb·ft/18.3 kgm) at 3000 rpm.
A 4 speed manual gearbox transfers the power to the wheels.
It weighs a claimed 1016 kg at the kerb.
It is claimed to manage a top speed of 175 km/h, or 109 mph.
1965 Triumph TR4A data
1965 Triumph TR4A data
bodywork
Body type2 seater convertible/cabriolet
Number of doors2
Designer
dimensions & weights
mminches
Wheelbase 2235 88
Track/tread (front) 1245 49
Track/tread (rear) 1232 48.5
Length 3962 156
Width 1473 58
Height 1207 47.5
Ground clearance 152 6
length:wheelbase ratio 1.77
Kerb weight 1016 kg 2240 lb
Weight distribution
fuel tank capacity 53.4 litres 11.7 UK Gal 14.1 US Gal
aerodynamics
Drag coefficient
Frontal area
CdA
engine
engine type naturally aspirated petrol
Engine manufacturer Triumph
Engine code
Cylinders Straight 4
Capacity 2.1 litre
2138 cc
(130.469 cu in)
Bore × Stroke 86 × 92 mm
3.39 × 3.62 in
Bore/stroke ratio 0.93
overhead valve (OHV)
2 valves per cylinder
8 valves in total
maximum power output
(Net)
105 PS (104 bhp) (78 kW)
at 4700 rpm
Specific output
(Net)
48.6 bhp/litre
0.8 bhp/cu in
maximum torque
(Net)
179 Nm (132 ft·lb) (18.3 kgm)
at 3000 rpm
Specific torque
(Net)
83.72 Nm/litre
1.01 ft·lb/cu3
Engine construction
sump
compression ratio 9:1
Fuel system 2 St carbs
bmep (brake mean effective pressure) 1052.1 kPa (152.6 psi)
Maximum RPM
crankshaft bearings 5
Engine coolant Water
Unitary capacity 534.5 cc
Aspiration Normal
Compressor N/A
Intercooler None
Catalytic converter N
performance
Acceleration 0-80km/h (50mph) 8.30 s
Acceleration 0-60mph
Acceleration 0-100km/h
Acceleration 0-160km/h (100mph)
Standing quarter-mile 18.50 s
Standing kilometre
Maximum speed 175 km/h (109 mph)
Power-to-weight ratio 103.79 PS/g
76.33 kW/g
102.36 bhp/ton
0.05 bhp/lb
Weight-to-power ratio 13.1 kg/kW
21.88 lb/bhp
fuel consumption
Fuel consumption
universal consumption (calculated from the above)
litres per 100km
km per litre
UK MPG
US MPG
Carbon dioxide emissions
Carfolio Calculated CO2 ?
VED band (UK)
CO2 Effizienz (DE)
chassis
Engine position front
Engine layout longitudinal
Drive wheels rear wheel drive  
Torque split N/A
Steering
turns lock-to-lock 2.500
Turning circle 10.40 m
Front suspension I.CS.
Rear suspension I.CS.
Wheel size front
Wheel size rear
Tyres front
Tyres rear
Brakes F/R Di/Dr
Front brake diameter
Rear brake diameter
Gearbox 4 speed manual
Top gear ratio 1.00
Final drive ratio 3.70
general
Carfolio.com ID55693
Production total
Model code
Model family
RAC rating 18.3
Insurance classification No information available
Tax band No information available
1965 Triumph TR4A added 1996-11-23.
Last modified 2013-02-28.

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