Yesterday I did a compression test on my 1996 GSR. I've been boostin 7lbs for 6k miles and I have 102k miles on the odometer. Stock engine w/ Mobil 1 syn. Numbers are from cyl 1-4: 235, 235, 230, 235.

I think i cranked the engine too many times though (10). But the car was at operating temp and at WOT. Should i redo my test w/ only 5-7 cranks? Also i didn't look at the gauge to see how the pressure built up.

 

not 100% sure, but once it's reached max compression, it will not go any higher.

 

those numbers look good, nothing really low. I just did a compression test on my Si last month .. 190 180 190 210. I believe the si has a drop lower compression that a GSR. Im sure those #'s are good. I have been boosted since october.

 

my comp. n# and im not even boosted 5,and the rest are close to 100