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FE Power Forums => FE Technical Forum => Topic started by: Fordman on September 07, 2022, 08:19:59 AM

Title: Head gasket bore size VS compressor ratio
Post by: Fordman on September 07, 2022, 08:19:59 AM

How much difference to the compression ratio would there be between a steel.shim head gasket that has a 4.400 bore size and .024 compressed thickness  versus a cometic. 027 compressed thickness but 4.0975 bore size have on a .030 over 390 (4.08). Thanks

Title: Re: Head gasket bore size VS compressor ratio
Post by: blykins on September 07, 2022, 08:35:51 AM

If the head gasket bores are perfectly round on both, then it will only change about .01 of a point. 

Title: Re: Head gasket bore size VS compressor ratio
Post by: Fordman on September 07, 2022, 08:46:08 AM

Thank you Brent!👍