just wondering what i should be at i know consistant across all four cylinders but what kind of numbers should i see thanks

 

Nobody knows maybe any websites ??

 

cr is supposed to be 10.6:1 on thoose
i don't know what that gives in psi

i know that compression is supposed to be pretty much equal in all clinders
+- 10-20psi at max

usually something higher than 160 ..

what are the numbers u got ?

 

USDM compressions yeild about 180+ across all 4 cylinders
at .2 lower the Si has 160+ across

 

Well I have that engine, and the numbers were all at 200-220.

Hope that helps,

 

Was the engine hot? Did you drive it before you did the compression test? Or what other internals do you have? Looks like Type S pistons or something?...