Subaru EA 8.7:1 Specs
Subaru EA · 3.622" × 2.638" · 8.7:1 engine specs: 108.7 ci (1.8L), 4-cylinder, 3.622" bore x 2.6378" stroke, 8.7:1 compression.
Dimensions
| Displacement | 108.7 ci / 1.8 L |
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| Bore | 3.622" |
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| Stroke | 2.6378" |
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| Cylinders | 4 |
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| Compression ratio | 8.7:1 |
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| Bore/stroke ratio | 1.373 |
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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 | 72–73 hp |
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What these numbers mean
| Bore/stroke character | 1.373 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
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| Mean piston speed at 6,000 RPM | 2,638 ft/min — conservative for a street engine |
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| Displacement per cylinder | 27.2 ci |
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| Static compression | 8.7:1 — low by modern standards, generally happy on regular pump fuel |
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Variants sharing these dimensions (2)
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
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| — | 72 hp | EA-81 |
| — | 73 hp | EA81 |
Vehicles (5)
- Subaru Leone
- Subaru BRAT
- Subaru XT
- Subaru Brat
- Subaru GL
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