Definition of compression ratio? - Saab 9000 Bulletin Board - Saabnet.com
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Definition of compression ratio?
Posted by Mr. Bubble (more from Mr. Bubble) on Wed, 18 May 2005 14:20:35
In Reply to: Just curious: what's compression ratio under boost?, David Ingram, Wed, 18 May 2005 13:32:20
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AFAIK, the compression ratio is just max cylinder vol / min cylinder volume.
Intake pressure certainly starts at ahigher PSI with a turbo or supercharger, but that doesn't change the compression ratio.
Detonation can be a problem with boost, as with a higher c.r., but I think you're mixing apples & oranges.
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