GomezWvC

I did a compression test this morning on my car too see how it was doing after boosting a few days back & it was running pretty lean for a day till we evened it out.
I'm runnin' at 11 psi for 415 whp.
So for an 88k mile engine on an 02 ap1 the ratios are:

Cylinder 1 - 195
Cylinder 2 - 195
Cylinder 3 - 200
Cylinder 4 - 195

I've read some info online as far as an ap1 should rarely be under 200 psi.. These numbers are definitely consistant threw all four but a little low on the mark..

So for my question, are these numbers ok? Should I start saving up for a new engine? Any opinions or thoughts would be appreciated, thanks.

Sneeze2K

195-200 psi is fine. the nominal (acceptable off the assembly line) pressure for a f20c is 228 psi and the minimum is 135 psi according to the service manual. the motor has semi-high mileage in which 200 is right about where it should be. if you are really worried about it, put a teaspoon of oil into each cylinder and try the test again to check for piston ring wear. but again, your compression is completely normal and very consistent and nothing to worry about it.

p.s. its not a ratio, thats a completely different thing