Key facts

1977 MG MGB GT information summary

What body style?
fixed-head coupé with 2+2 seats
How long?
4020 mm
How heavy?
1108 kg
What size engine?
1.8 litre, 1799 cm3
How many cylinders?
4, Straight
How much power?
85 PS / 84 bhp / 63 kW @ 5500 rpm
How much torque?
143 Nm / 105 ft.lb / 14.6 kgm @ 2500 rpm
How quick?
0-60 mph: 14.00 s
How fast?
159 km/h, 99 mph

MG

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1977 MG MGB GT technical specifications

Introduction

The MGB GT is a rear wheel drive coupé motor car with a front placed engine, produced by MG.
The power is produced by a naturally aspirated engine of 1.8 litre capacity. This unit features overhead valve valve gear, 4 cylinder layout, and 2 valves per cylinder. It produces 84 bhp (85 PS/63 kW) of power at 5500 rpm, and maximum torque of 143 N·m (105 lb·ft/14.6 kgm) at 2500 rpm.
A 4 speed manual with overdrive gearbox supplies the power to the driven wheels.
Claimed kerb weight is 1108 kg.
The MG MGB GT is claimed to achieve a top speed of 159 km/h or 99 mph.
1977 MG MGB GT data
1977 MG MGB GT data
bodywork
Body type2+2 seater fixed-head coupé
Number of doors2
Designer
dimensions & weights
mminches
Wheelbase 2311 91
Track/tread (front) 1245 49
Track/tread (rear) 1251 49.3
Length 4020 158.3
Width 1568 61.7
Height 1295 51
Ground clearance 127 5
length:wheelbase ratio 1.74
Kerb weight 1108 kg 2443 lb
Weight distribution 52.00 % front
fuel tank capacity 50 litres 11 UK Gal 13.2 US Gal
aerodynamics
Drag coefficient
Frontal area
CdA
engine
engine type naturally aspirated petrol
Engine manufacturer Austin
Engine code
Cylinders Straight 4
Capacity 1.8 litre
1799 cc
(109.782 cu in)
Bore × Stroke 80.26 × 88.9 mm
3.16 × 3.5 in
Bore/stroke ratio 0.9
overhead valve (OHV)
2 valves per cylinder
8 valves in total
maximum power output
(DIN)
85 PS (84 bhp) (63 kW)
at 5500 rpm
Specific output
(DIN)
46.7 bhp/litre
0.77 bhp/cu in
maximum torque
(DIN)
143 Nm (105 ft·lb) (14.6 kgm)
at 2500 rpm
Specific torque
(DIN)
79.49 Nm/litre
0.96 ft·lb/cu3
Engine construction
sump
compression ratio 9:1
Fuel system 2 SU HIF4 carbs
bmep (brake mean effective pressure) 998.9 kPa (144.9 psi)
Maximum RPM
crankshaft bearings 5
Engine coolant Water
Unitary capacity 449.75 cc
Aspiration Normal
Compressor N/A
Intercooler None
Catalytic converter N
performance
Acceleration 0-80km/h (50mph) 9.30 s
Acceleration 0-60mph 14.00 s
Acceleration 0-100km/h
Acceleration 0-160km/h (100mph)
Standing quarter-mile 19.10 s
@ 70.00 mph
Standing kilometre 36.40 s
@ 146.00 km/h
Maximum speed 159 km/h (99 mph)
Power-to-weight ratio 76.87 PS/g
56.53 kW/g
75.81 bhp/ton
0.03 bhp/lb
Weight-to-power ratio 17.69 kg/kW
29.55 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 rack & pinion
turns lock-to-lock
Turning circle 10.40 m
Front suspension I.CS.W.
Rear suspension LA.SE.
Wheel size front
Wheel size rear
Tyres front Pirelli Cinturato 165 SR 14
Tyres rear Pirelli Cinturato 165 SR 14
Brakes F/R Di/Dr-S
Front brake diameter 273 mm
Rear brake diameter 254 mm
Gearbox 4 speed manual with overdrive
Top gear ratio 0.82
Final drive ratio 3.91
general
Carfolio.com ID102652
Production total
Model code
Model family
RAC rating 16.0
Insurance classification No information available
Tax band No information available
1977 MG MGB GT added 2002-11-18.
Last modified 2013-02-28.

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