Classic mini a series 1275cc engine specification
| Bore × stroke | 70.61 mm × 81.30 mm
2.78 in × 3.2 in |
| Cylinders | S-4 |
| Displacement | 1.3 litre 1275 cc (77.805 cu in) |
| Type | OHV OHV 2 valves per cylinder 8 valves in total |
| Construction | |
| Sump | |
| Compression ratio | 8.80:1 |
| Fuel system | 1 SU carb |
| Maximum power | 57.8 PS (57.0 bhp) (42.5 kW) @ 5500 rpm |
| Specific output | 44.7 bhp/litre 0.73 bhp/cu in |
| Maximum torque | 94.0 Nm (69 ft·lb) (9.6 kgm) @ 3000 rpm |
| bmep | 926.5 kPa (134.4 psi) |
| Specific torque | 73.73 Nm/litre |
| Maximum rpm | |
| Manufacturer | Austin |
| Code | |
| Main bearings | 3 |
| Coolant | Water |
| Bore/stroke ratio | 0.87 |
| Unitary capacity | 318.75 cc/cylinder |
| Aspiration | Normal |
| Compressor type | N/A |
| Intercooler | None |
| Catalytic converter | N |