comp 910 shims

obspsd · Sep 17, 2012

What size shim is recommended for the comp 910 valve springs?i pulled my heads this weekend so this would be a good time to do them.

ryanss22 · Sep 17, 2012

It depends on what seat preassure you want, I just did mine last week and I went with the .60 shims to give me roughly 125lbs of seat pressure... But that's just about as Much as u can safely go..

4.0l sahara · Sep 17, 2012

get a spring height micrometer.

obspsd · Sep 17, 2012

ryanss22 said:
It depends on what seat preassure you want, I just did mine last week and I went with the .60 shims to give me roughly 125lbs of seat pressure... But that's just about as Much as u can safely go..

.60 or .060?

davey99ps · Sep 17, 2012

There's some good info in the sticky about the shims. Im not sure of the thread name, but it is a sticky on here

neverkickn · Sep 17, 2012

4.0l sahara said:
get a spring height micrometer.

Yup. You can assume that youre valve height is the same and factory spec across the board or you can do the smart thing and measure it so you know exactly how much to shim for your desired seat pressure.