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Old 11-28-2004 | 03:39 AM
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knarF
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Default Calculating compression ratio
Hi,

I'm wondering. Isnt it so that the compression ratio of a engine is :
the volume of gas in cilinder at DBP(lowest, all ports are "just"closed)), compared to volume of cilinder at TBP (top) ?
Im trying to calculate the compression ratio of an OS 46FX (Glow, not diesel yet)) , but I'm already lost. Bore*stroke should be 7.5 cc according specs, but thats not the case.

Hope someone can help me out.

Best regards,

Frank
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