Mitsubishi 4A3 engine
 |
| 4A3 | |
|---|---|
| Overview | |
| Manufacturer | Mitsubishi Motors |
| Production | 1993–present |
| Layout | |
| Cylinder block material | Cast iron |
| Cylinder head material | Aluminium |
The Mitsubishi 4A3 engine is a range of alloy-headed inline four-cylinder engines from Mitsubishi Motors, introduced in 1993 in the sixth generation of their Mitsubishi Minica kei car.
A 1.1 L version was made available in 1999 for bigger cars, and was subsequently fitted to the Mitsubishi Pistachio, a limited production car based on the kei class Minica, equipped with the company's Automatic Stop-Go (ASG) system for cutting the engine when idling. So equipped, the Pistachio was able to record fuel economy figures of 30 km/L.
4A30
Displacement — 659 cc
Bore — 60.0 mm
Stroke — 58.3 mm
Fuel type — Unleaded regular gasoline
659 cc Electro carb (1993)
- Engine type — Inline 4-cylinder SOHC 16v
- Fuel system — Electro carburettor
- Compression ratio — 10.0:1
- Power — 37 kW (50 PS) at 7500 rpm
- Torque — 56 N·m (41 lb·ft) at 5500 rpm
659 cc SOHC (1993)
- Engine type — Inline 4-cylinder SOHC 16v
- Fuel system — ECI multiple
- Compression ratio — 10.0:1
- Power — 41 kW (55 PS) at 7000 rpm
- Torque — 60 N·m (44 lb·ft) at 5000 rpm
659 cc DOHC turbo (1993)
- Engine type — Inline 4-cylinder DOHC 20v
- Fuel system — ECI multiple
- Compression ratio — 8.5:1
- Power — 48 kW (64 PS) at 7000 rpm
- Torque — 97 N·m (71 lb·ft) at 3500 rpm
4A31
Displacement — 1094 cc
Bore — 66.0 mm
Stroke — 80.0 mm
Fuel type — Unleaded regular gasoline
1094 cc SOHC (1999)
- Engine type — Inline 4-cylinder SOHC 16v
- Fuel system — ECI multiple
- Compression ratio — 9.5:1
- Power — 58 kW (78 PS) at 6000 rpm
- Torque — 103 N·m (75 lb·ft) at 4000 rpm
1094 cc GDI (1999)
- Engine type — Inline 4-cylinder DOHC 16v
- Fuel system — GDI Direct Injection
- Compression ratio — 11.0:1
- Power — 54 kW (74 PS) at 6000 rpm
- Torque — 100 N·m (73 lb·ft) at 4000 rpm