Quote:
Originally Posted by SupraSleuth
..The average values I obtained ranged from 207 to 217 psi. I did not expect to see values this great and now I am wondering if my compression guage is not properly calibrated. Insight anyone ??
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Possible factors for high readings are:
1) Faulty readings
2) Carbon build up on the pistons and/or head
3) Someone put in high compression pistons
4) The head/block was/were milled enough so that it would change the compression
5) A thinner head gasket was used than stock specs