New LS1 Owners - Newbie Tech - Compression numbers on an engine I'm purchasing...




jasonst
05-30-2006, 05:51 PM
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


'Trust'
05-30-2006, 06:07 PM
Those numbers are good, 100 is considered a dead cylinder and anything above 180 is great.

'Trust'
05-30-2006, 06:08 PM
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


2K2WS6TA
05-30-2006, 06:18 PM
Oil pressure 55 cold 45 hot was that at idle, or driving

jasonst
05-30-2006, 06:55 PM
Oil pressure was at idle.
Thanks for the comments.
~Jason