Mitsubishi 4D56 Specs
Mitsubishi 4D56 engine specs: 151 ci (2.5L), 4-cylinder, 3.5866" bore x 3.7402" stroke, 21:1 compression.
Dimensions
| Displacement | 151 ci / 2.5 L |
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| Bore | 3.5866" |
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| Stroke | 3.7402" |
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| Cylinders | 4 |
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| Compression ratio | 21:1 |
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| Bore/stroke ratio | 0.959 |
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Construction
| Block material | cast iron |
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| Head material | aluminum |
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| Valvetrain | SOHC |
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| Fuel type | diesel |
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| Advertised HP | 74 hp |
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What these numbers mean
| Bore/stroke character | 0.959 — square — bore and stroke are within 5%, a balanced compromise |
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| Mean piston speed at 6,000 RPM | 3,740 ft/min — in the range typical of performance street engines |
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| Displacement per cylinder | 37.8 ci |
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| Static compression | 21:1 — high enough that pump premium or better is normally required |
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