Porsche M44/01 Specs
Porsche M44/01 engine specs: 151 ci (2.5L), 4-cylinder, 3.937" bore x 3.1063" stroke, 9.5:1 compression.
Dimensions
| Displacement | 151 ci / 2.5 L |
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| Bore | 3.937" |
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| Stroke | 3.1063" |
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| Cylinders | 4 |
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| Compression ratio | 9.5:1 |
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| Bore/stroke ratio | 1.267 |
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Construction
| Block material | aluminum |
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| Head material | aluminum |
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| Valvetrain | SOHC |
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| Fuel type | gas |
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| Advertised HP | 163 hp |
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What these numbers mean
| Bore/stroke character | 1.267 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
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| Mean piston speed at 6,000 RPM | 3,106 ft/min — conservative for a street engine |
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| Displacement per cylinder | 37.8 ci |
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| Static compression | 9.5:1 — in the range that usually runs on pump premium |
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