| Nissan MA engine | |
|---|---|
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| Overview | |
| Manufacturer | Nissan Motors |
| Production | 1983-1992 |
| Layout | |
| Configuration | Inline-4 |
| Displacement | 0.9 L (930 cc) 1.0 L (987 cc) 1.2 L (1,235 cc) |
| Cylinder bore | 66 mm (2.60 in) 68 mm (2.68 in) 71 mm (2.80 in) |
| Piston stroke | 68 mm (2.68 in) 78 mm (3.07 in) |
| Cylinder block material | Aluminium |
| Cylinder head material | Aluminium |
| Valvetrain | SOHC 2 valves x cyl. |
| Compression ratio | 7.7:1, 8.0:1, 9.0:1, 9.5:1 |
| Combustion | |
| Turbocharger | Single turbocharger (MA10ET) Twincharger (MA09ERT) |
| Fuel system | Fuel injection (MA09ERT, MA10E, MA10ET) Carburetor (MA10S, MA12S) |
| Fuel type | Gasoline |
| Cooling system | Water cooled |
| Output | |
| Power output | 50–110 PS (37–81 kW; 49–108 hp) |
| Torque output | 75–130 N⋅m (55–96 lb⋅ft) |
| Dimensions | |
| Dry weight | 111 kg (245 lb) |
| Chronology | |
| Successor | Nissan CG engine |
The MA is a straight-4 SOHC 0.9 L, 1.0 L, or 1.2 L engine first introduced in 1982 by Nissan, intended primarily for the K10 series Micra/March model. It shares design similarities with the older E engine, with an 8-valve hemispherical cylinder head but differs in that it uses an aluminium cylinder block. Unusually, the specified ignition timing for the MA10 running on the specified 90 RON gasoline was 2 degrees after top dead centre, reflecting a very high flame speed in the compact combustion chambers.