Subaru EF engine

The EF is an automotive engine made by Subaru, introduced in 1984 for the Subaru Justy. It is a water-cooled, straight-three engine, four-stroke engine with a belt-driven single overhead camshaft, and a chain-driven balance shaft. It has an alloy cylinder head and a closed deck iron engine block with a bore spacing of 86.0 mm (3.39 in). The two-cylinder EK23 engine is closely related to the EF series, sharing the same bore spacing and overall design. The export market 665 cc EK42 motor even shares the bore and stroke of the EF10.

1.0-litre (997 cc) two valves per cylinder

Bore x Stroke: 78 mm (3.1 in) x 69.6 mm (2.7 in)

Power:

Usage:

1.2-litre (1189 cc) three valves per cylinder

Bore x Stroke: 78 mm (3.1 in) x 83 mm (3.3 in)

Power:

Usage:

Power:

Usage:

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