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Engine compression

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ariman

10+ Year Contributor
127
2
Jun 2, 2011
CA, California
The next weekend i'll to check the engine compression, but, what values should I expect? 120? 130? what are the normal values?
Thanks.
 
You don't want to be much lower than 150.

For example on my fresh built motor with 9:1 comp. Manley pistons after initial break-in I was sitting at 185psi on all 4.
 
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