Porsche MDG.G Specs
Porsche MDG.G engine specs: 243.8 ci (4L), 6-cylinder, 4.0157" bore x 3.2087" stroke, 13.3:1 compression.
Dimensions
| Displacement | 243.8 ci / 4 L |
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| Bore | 4.0157" |
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| Stroke | 3.2087" |
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| Cylinders | 6 |
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| Compression ratio | 13.3:1 |
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| Bore/stroke ratio | 1.252 |
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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 | 502 hp |
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What these numbers mean
| Bore/stroke character | 1.252 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
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| Mean piston speed at 6,000 RPM | 3,209 ft/min — conservative for a street engine |
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| Displacement per cylinder | 40.6 ci |
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| Static compression | 13.3:1 — high enough that pump premium or better is normally required |
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