910 Comp Springs: What did you use for Shims?

ToMang07 · May 18, 2012

Those of you who used the 910 springs, what did you use for shims?

OSCS · May 18, 2012

I went with .30 but i didnt know squat about measuring before i purchased them

Magnum PD · May 18, 2012

More shims, more seat pressure?

Ron's Power Stroke · May 19, 2012

doing mine with a micrometer so there all even.. what shim to use is going to depend on miles, maintenance and wear of the valves...

Chvyrkr · May 19, 2012

Ron's Power Stroke said:
doing mine with a micrometer so there all even.. what shim to use is going to depend on miles, maintenance and wear of the valves...

This, you need to spend a little money on tools and install every spring to a specific height.

If you wanna just wing it go .030

chris1978 · May 20, 2012

I measured all of them and needed .030 under the intake and .045 under the exhaust.

smoker00 · May 20, 2012

chris1978 said:
I measured all of them and needed .030 under the intake and .045 under the exhaust.

Mine at 112000 was the same to make 132 lbs seat pressure..
30. In 45 ex..

PowerstrokeJunkie · May 21, 2012

Copper colored .060" no issues thus far.

ToMang07 · May 21, 2012

PowerstrokeJunkie said:
Copper colored .060" no issues thus far.

Holy chit.....what are you running for spring pressure?

Ron's Power Stroke · May 21, 2012

i think Kris is pulling your chain..

ToMang07 · May 21, 2012

PowerstrokeJunkie · May 21, 2012

No, i have the copper colored shims under my springs.. Seat pressure? Idk it works LOL

Dieselboy. · May 24, 2012

Never measured. Just stuck a .045 in.

907DAVE · May 24, 2012

It varied from valve to valve, but some were up in the .060 range.

woodduck97 · May 24, 2012

I am running .45 but I am still on the stock turbo. I like kris's thought thought though.

TARM · May 30, 2012

Now how many of you actually measure them?

If you did not and used shims all you actually know for sure is that you did not use enough lift to cause binding at the rpms you are running. Nothing more.

How many fully compressed the spring once or twice before they installed them to insure it took its initial set?

You can also check the actual bind height as well as the ones listed are the MAX tolerance COMP Cams will allow for they are almost always a good bit under this but you have to check. I have always used it as the ceiling.