I'm going to do a compression test on my GSR w/CTR pistons this weekend, does anybody know what it's supposed to be at? TIA

 

Anybody???

 

^^^

 

are those ctr pistons at stock gsr compression? If they are, your compression should be about 120.

 

go to c-speedracing.com they have a compression calculator.

 

260+ psi.

I'm using the P73-00's with GS-R head and 3-layer head gasket, and mine are all around 250 - 255 psi.

I think I've seen people hitting beyond the max reading on the Sears gauge before on the PCT's. I think that's 300+ psi. Don't quote me on that tho.

 

The compression calculator at c-speedracing.com just gives the compression ratio, it doesn't tell you what to expect when you do a compression test. Does anybody know for sure what psi I should expect? TIA.

 

do a search for compression tests and see what other ht members get, I think b18c1s are around 230~260?

 

as long as they are not +- 20 from highest to lowest your ok...

the psi varies depending on compression, miles on the motor (conditions of valve seals etc..)...

do one, and post the results....

 

I am using P73 A0 pistons (USDM R) and I got 270 accross the board not long after a complete bottom end rebuild. With PCT's I'd expect 300+... you're running at least a full point higher than my A0's.