Mitsubishi 4A3 engine

4A3

Manufacturer	Mitsubishi Motors
Production	1993–present
Cylinder block alloy	Cast iron
Cylinder head alloy	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 ft·lbf) 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 ft·lbf) 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 ft·lbf) 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 ft·lbf) at 4000 rpm

1094 cc GDI (1999)

• Engine type — Inline 4 cylinder DOHC 16v
• Fuel system — ECI multiple
• Compression ratio — 11.0:1
• Power — 54 kW (74 PS) at 6000 rpm
• Torque — 100 N·m (73 ft·lbf) at 4000 rpm

See also

• List of Mitsubishi engines

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