sr20det compression numbers

[1992hatch]

i did a compression test on my car today and this is how it went#1---120psi#2---110psi#3---120psi#4---110psiis this where it should be or should it be up close to 150psiplease help

[1992hatch]

i found what i was looking for damn iti guess i need to pull the head and find out what is wrong with it hope it just the head gasket and the head not f***edshoot me now shoot me now shoot me now

[Hijacker]

There's nothing super wrong with those numbers IMO. They're within spec of each other, and it's to be expected to see an old SR running numbers near 120 psi. A screwed up headgasket would not have numbers showing like that. A blown HG usually shows one cylinder super low and you can't do any tricks to get it back up. Compression numbers just gradually lower over time due to piston ring wear.

[1992hatch]

i bought it locally from a guy that said it had been rebuilt 60,000mis agotest with oil135125130120

[Seishuku]

Is that with the engine warmed up, or is that stone cold?

[1992hatch]

engine at 180degrees

[Seishuku]

Could be valves not sealing completely, though it would be odd for all of them to do it.

Unless the engine wasn't broken in correctly, trashing the rings.

I would do a leak down test to narrow down the problem.

[1992hatch]

doing that tomorrow