MGB Roadster 1975-80 specifications

Engine
Cylinders: 4 in line
Bore: 80.26 mm Stroke: 88.9 mm
Displacement: 1798 cc
Valves: Pushrod/overhead
Compression ratio: 8.8:1
Crankshaft bearings: 5
Carburettors: Twin SU 1.5in
type HS4
Power output: 95bhp at 5400rpm

Performance
Maximum speed: 103mph
Acceleration: 0-60 mph 12.2secs
(12.9secs overdrive version)
Approx fuel consumption: 25mpg

Suspension
Front: Independent coil and wishbone,
anti-roll bar
Rear: Half elliptic, leaf spring
Shock absorbers: hydraulic lever arm

Construction
Unitary, pressed steel

Brakes
Lockheed, hydraulic servo assisted
Front: 10.75in disc
Rear: 10 x 1.75in drum

Steering
Rack and pinion,
3 turns lock to lock

Transmission
Clutch: 8 in Borg and Beck,
single dry-plate diaphragm
Gearbox: all syncromesh 4-speed with overdrive Laycock Type D,
Ratios: Top 1.0 (OD 0.32),
3rd 1.382 (OD1.133),
2nd 2.167,
1st 3.036,
reverse 3.095

Wheels
14" knock-on wire wheels (option)
14in 4 stud, Rostyle (standard)

Dimensions & Weight
Wheelbase: 7 ft 7 in
Track - front: 4 ft 1 in
Track - rear: 4 ft 1.25 in
Overall length: 12 ft 9.2 in
Overall width: 4ft 11.9 in
Overall height: 4 ft 1.4 in
Ground clearance: 4.5 in
Turning circle: 32 ft
Kerb weight: 20.4cwt
Fuel tank: 12gals

Production
MGB Roadster 1962-80: 386,789
1975: 19,966
1976: 25,860
1977: 24,490
1978: 33,006
1979: 19,897
1980: 11,004