Classic mini a series 850cc engine specification. Austin original mini specification
| Bore × stroke | 62.90 mm × 68.26 mm
2.48 in × 2.69 in |
| Cylinders | S-4 |
| Displacement | 0.8 litre 848 cc (51.748 cu in) |
| Type | OHV OHV 2 valves per cylinder 8 valves in total |
| Construction | |
| Sump | |
| Compression ratio | 8.30:1 |
| Fuel system | 1 SU carb |
| Maximum power | 34.5 PS (34.0 bhp) (25.4 kW) @ 5500 rpm |
| Specific output | 40.1 bhp/litre 0.66 bhp/cu in |
| Maximum torque | 60.0 Nm (44 ft·lb) (6.1 kgm) @ 2900 rpm |
| bmep | 889.1 kPa (129 psi) |
| Specific torque | 70.75 Nm/litre |
| Maximum rpm | |
| Manufacturer | Austin |
| Code | |
| Main bearings | 3 |
| Coolant | Water |
| Bore/stroke ratio | 0.92 |
| Unitary capacity | 212 cc/cylinder |
| Aspiration | Normal |
| Compressor type | N/A |
| Intercooler | None |
| Catalytic converter | N |