Thread: SR20VE compression test numbers...

Cams PSI Per Cyl
Stock SR20VE Stock 240psi
CG @ +2.5,-5 SR16VE 270psi
CG @ 0,0 N1 230psi

Kelford 184C's

This seems to match up with what I have read, in regards to the different cam options on the stock bottom-end VE. I am a bit surprised that the 16VE low lobes made that much of a difference though.

I have 210 psi across all 4. 20VE and N1 cams both showed same numbers for me.

thank you

will try out mine

mine are N1s and I got 230 pretty much across the board.

I do the test w all 4 plugs out too. Just less strain on the motor.

I've always done it this way as well. Was always told this was the "proper" way.





I am going to have to try this. Less stress on the motor sounds good!

Proper way to do a compression test is with all plugs removed. The reason that I can think of for this is, other plugs being installed will create pressure and slow down the crank for the cylinder you are actually testing.

Going to do another test this weekend. I will try it with all of the plugs out this time. Now I'm starting to second-guess if I had all of the plus out the last time I did it? I need more sleep! An equal drop of 20 PSI per cylinder seems odd to me.

I have known many mechanics who do it one plug at a time as well. Who knows, we will see. If you guys say it is better with all of the plugs out, then so be it, sound sgood to me!