Puneet Varma (Editor)

Subaru EF engine

Updated on
Edit
Like
Comment
Share on FacebookTweet on TwitterShare on LinkedInShare on Reddit
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.

Contents

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:

  • 47 bhp (35 kW; 48 PS) at 5000 rpm/59 lb·ft (80 N·m) at 3200 rpm with single barrel Hitachi carburetor and 9.5:1 compression ratio
  • 54 bhp (40 kW; 55 PS) at 6000 rpm/59 lb·ft (80 N·m) at 3600 rpm with dual barrel Hitachi carburetor and 9.5:1 compression ratio

    • Usage:

  • Subaru Justy "J10" (limited to some European markets and Asia)
  • Subaru Libero "E10"

    • EF12

    1.2-litre (1189 cc) three valves per cylinder

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

    Power:

  • 66 bhp (49 kW; 67 PS) at 5200 rpm/70 lb·ft (95 N·m) at 3600 rpm with two barrel Hitachi carburetor and 9:1 compression ratio
  • 73 bhp (54 kW; 74 PS) at 5600 rpm/71 lb·ft (96 N·m) at 3600 rpm with multi-port fuel injection and 9.1:1 compression ratio

    • Usage:

  • Subaru Justy "J12"
  • Subaru Libero "E12"

    • Power:

  • 80 bhp (60 kW; 81 PS) with multi-point fuel injection

    • Usage:

  • Subaru Tutto (Taiwan)

    • References

    Subaru EF engine Wikipedia
    (Text) CC BY-SA