Subaru EA-63 Specs
Subaru EA-63 engine specs: 77.3 ci (1.2L), 4-cylinder, 3.2283" bore x 2.3622" stroke, 9:1 compression.
Dimensions
| Displacement | 77.3 ci / 1.2 L |
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| Bore | 3.2283" |
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| Stroke | 2.3622" |
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| Cylinders | 4 |
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| Compression ratio | 9:1 |
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| Bore/stroke ratio | 1.367 |
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Construction
| Block material | aluminum |
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| Head material | aluminum |
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| Valvetrain | OHV |
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| Fuel type | gas |
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| Advertised HP | 68 hp |
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What these numbers mean
| Bore/stroke character | 1.367 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
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| Mean piston speed at 6,000 RPM | 2,362 ft/min — conservative for a street engine |
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| Displacement per cylinder | 19.3 ci |
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| Static compression | 9:1 — low by modern standards, generally happy on regular pump fuel |
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