Porsche 30 9A2 991 Turbo Specs
Porsche 30 9A2 991 Turbo engine specs: 181.9 ci (3L), 6-cylinder, 3.5827" bore x 3.0079" stroke, 10:1 compression.
Dimensions
| Displacement | 181.9 ci / 3 L |
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| Bore | 3.5827" |
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| Stroke | 3.0079" |
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| Cylinders | 6 |
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| Compression ratio | 10:1 |
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| Bore/stroke ratio | 1.191 |
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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 | 370 hp |
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What these numbers mean
| Bore/stroke character | 1.191 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
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| Mean piston speed at 6,000 RPM | 3,008 ft/min — conservative for a street engine |
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| Displacement per cylinder | 30.3 ci |
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| Static compression | 10:1 — in the range that usually runs on pump premium |
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