My car is not diong so well lately , smoking at higher rpm's and have a knocking/tinging sound coming from my head on #1 cylinder where the head meets the block , anywho here are my compression numbers , tell me what u guys think . This is a stock gsr block with ctr cams and upgraded valvetrain.

cyl
#1 185
#2 175
#3 195
#4 205

I think i did it right and they numbers look kinda funny to me.

 

they sound a little low to me, especially the first three..

 

bump

 

Numbers look good, although #2 concerns a bit.

As long as #'s are within 10-15% of each other, you should be good.

 

Cylinder #2 is a little low. nothing that sets off the REBUILD alarm or anything, but it is a bit down. was it over 10-15% of each other?