MGB Roadster 1970-72 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
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: 4-speed,
synchromesh on 2nd, 3rd and top gears
Ratios: Top 1.0, 3rd 1.37, 2nd 2.21, 1st 3.64, reverse 4.76
Overdrive: (Optional) Laycock Type D,
Top .80,
3rd 1.10, Final drive: 3 . 9 to1

Wheels
14in 4 stud, Rostyle
knock-on wire wheels as option

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: 18.5 cwt
(19cwt overdrive version)
Fuel tank: 12gals

Production
MGB Roadster 1962-80: 386,789
1965: 24,179
1966: 22,675
1967: 15,128
1968: 17,355
1969: 19,050