Subaru EJ20Y/X Specs
Subaru EJ20Y/X engine specs: 121.7 ci (1.994L), 4-cylinder, 3.622" bore x 2.9528" stroke, 9.5:1 compression.
Dimensions
| Displacement | 121.7 ci / 1.994 L |
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| Bore | 3.622" |
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| Stroke | 2.9528" |
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| Cylinders | 4 |
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| Compression ratio | 9.5:1 |
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| Bore/stroke ratio | 1.227 |
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Construction
| Block material | aluminum |
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| Head material | aluminum |
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| Valvetrain | DOHC |
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| Fuel type | gas |
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| Advertised HP | 250 hp |
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What these numbers mean
| Bore/stroke character | 1.227 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
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| Mean piston speed at 6,000 RPM | 2,953 ft/min — conservative for a street engine |
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| Displacement per cylinder | 30.4 ci |
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| Static compression | 9.5:1 — in the range that usually runs on pump premium |
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Vehicles (2)
- Subaru Legacy GT (JDM)
- Subaru Forester XT (JDM)
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