Subaru FB20 Specs
Subaru FB20 engine specs: 122 ci (2L), 4-cylinder, 3.3071" bore x 3.5433" stroke, 10.5:1 compression.
Dimensions
| Displacement | 122 ci / 2 L |
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| Bore | 3.3071" |
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| Stroke | 3.5433" |
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| Cylinders | 4 |
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| Compression ratio | 10.5:1 |
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| Bore/stroke ratio | 0.933 |
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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 | 148 hp |
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What these numbers mean
| Bore/stroke character | 0.933 — undersquare — stroke exceeds bore, which favours low-end torque |
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| Mean piston speed at 6,000 RPM | 3,543 ft/min — in the range typical of performance street engines |
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| Displacement per cylinder | 30.5 ci |
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| Static compression | 10.5:1 — in the range that usually runs on pump premium |
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Vehicles (3)
- Subaru Impreza
- Subaru Forester
- Subaru Crosstrek
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