Specifications
| Displacement | Bore | Stroke | Compression ratio |
Carburation | Horsepower | @rpm | Torque | @rpm |
|---|---|---|---|---|---|---|---|---|
| 803 cc | 58 mm | 76.2 mm | 7.5:1 | one SU H2 sidedraft | 30 PS (22 kW; 30 hp) | 5000 | 46 lb·ft (62 N·m) | 2700 |
| 848 cc | 62.9 mm | 68.26 mm | 8.3:1 | one SU HS2 sidedraft | 33 PS (24 kW; 33 hp) | 5500 | 44 lb·ft (60 N·m) | 2900 |
| 948 cc | 62.9 mm | 76.2 mm | — | one SU HS2 sidedraft | 37 PS (27 kW; 36 hp) | 4750 | 50 lb·ft (68 N·m) | 2500 |
| 970 cc | 70.6 mm | 61.91 mm | — | two SU HS2 sidedraft | 65 PS (48 kW; 64 hp) | 6500 | 55 lb·ft (75 N·m) | 3500 |
| 997 cc | 62.43 mm | 81.28 mm | — | two SU HS2 sidedraft | 55 PS (40 kW; 54 hp) | 6000 | 54 lb·ft (73 N·m) | 3600 |
| 998 cc | 64.58 mm | 76.2 mm | 8.3:1 | one SU HS2 sidedraft | 39 PS (29 kW; 38 hp) | 4750 | 52 lb·ft (71 N·m) | 2700 |
| 1071 cc | 70.6 mm | 68.26 mm | 8.5:1 | two SU HS2 sidedraft | 70 PS (51 kW; 69 hp) | 6000 | 62 lb·ft (84 N·m) | 4500 |
| 1098 cc | 64.58 mm | 83.72 mm | 8.5:1 | one SU HS2 sidedraft | 47 PS (35 kW; 46 hp) | 5200 | 60 lb·ft (81 N·m) | 2450 |
| 1275 cc | 70.6 mm | 81.28 mm | 8.8:1 | one SU HS4 sidedraft | 57 PS (42 kW; 56 hp) | 5300 | 69 lb·ft (94 N·m) | 3000 |
All engines had a cast iron head and block, and two valves per cylinder in an OHV configuration. Engines were available in Diesel in the BMC tractor.
Note: All A-series engines up until mid 1970 were painted in British Standard (381c) 223 Middle Bronze Green. : Source Austin Morris (BL) internal documents archives.This does not include overseas production models such as Australian manufacture.
Read more about this topic: BMC A-Series Engine