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Compression numbers on an engine I'm purchasing...

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Old 05-30-2006, 05:51 PM
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Default Compression numbers on an engine I'm purchasing...

I was told that all compression #'s came in between 190 and 200 on 8 cylinders tested.
Oil pressure was 55 cold and 45 hot.

I did a quick search, but didn't find anything. I will look again, but if a couple of you could post whether these #'s are fair, good, or awesome, I'd greatly appreciate it.

Regards,
~Jason
Old 05-30-2006, 06:07 PM
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Those numbers are good, 100 is considered a dead cylinder and anything above 180 is great.
Old 05-30-2006, 06:08 PM
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Oh, and GM minimum PSI on oil pressure is like 18 PSI at idle, a good general rule is 10 PSI per 1000 RPM, so your golden
Old 05-30-2006, 06:18 PM
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Oil pressure 55 cold 45 hot was that at idle, or driving
Old 05-30-2006, 06:55 PM
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Oil pressure was at idle.
Thanks for the comments.
~Jason




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