Question on cp pistons compression.

S

s14drifter69

Member
like the title says. i have cp pistons 9:0.1 ratio and i need to know what numbers will i get when i do a compression test. im gettin 150 psi in all 4 cylinders. what is the right psi? thanks
 
i have 165 on all 4 , i redid the head to factory spec with cometic HG i also thought it was low but car runs fine even though i dont have it properly tuned
 
i really dont know whats in this block i built 2 at the same time, one with eagle the other with crower , both zenkis where getting built at the same time so not sure what block went in what
but both have cp 9:1 compresion, and complete stock head , cometic HG and 10mm arp head studs
this block gave me 165 when warm cold is like 90 something like that and the other gave me 163 160 163 161 but 145 cold...
not worried about it they both run good great cold start and my car sits for a week without being touched
are you having problems or just checked it and freaked out by the low number
 
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