i need to know the compression normal for a healthy motor i did a compression test and just want to know if its normal these are my results
is this normal??
cylinder1-155
cylinder2-155
cylinder3-148
cylinder4-155

 

looks ok to me, how many miles are on it? The main thing is that there is no huge variance in readings from cylinder to cylinder and they are not astronomically low or high.

 

the car has 144,000 miles on it

 

looks good

 

looks good to me, i had a healthy boosted d16z6 with 156K on it and was 155-160psi across the board.

 

A little low, but it'll work. From the factory it's around 200. My first z6 had 182k on it (with the last 30k on 7psi of boost) and it had 170-175's when I pulled it out...