What should compression be on a 87 turbo 2? Im hearing different things from different people.

 

Compression or compression ratio? Compression numbers per chamber should hopefully be 100+ psi @ 250 RPM (cranking speed w/ charged battery). Minimum factory spec is about 80 psi, but that is the bottom of the barrel.

The CR on an S4 TII engine is 8.5:1.

 

The guy told me its around 90psi per rotor.

 

90 PSI is fine.

Realistically, does the engine run well? Does it make decent power and not suck down fuel? If yes, then compression is fine.

 

Allright, thanks a lot man!