I'm looking for some .015" shims to adjust the valve spring installed height on my H22. I can't find anything in the proper size listed online.

Where can I source some of these, or is their any other way to do this?

 

why are you trying to shim the valvetrain?

 

valve spring installed height.

 

if your spring installed height is too low, chances are the valve is too deep in the head. which would mean you have too much valve above the guide. which means your rocker geometry is pushing it.

 

Yes the head has had a few valve jobs, I could get away with a .010" shim but would like to add a little bit extra seat pressure since I'm using stock valve springs.

Will .010" or .015" really affect the rocker goemetry that much? I can probably have .010" taken off the top of the valve stem to compensate without hurting any other clearances too much.

 

the intake valve for instance has an installed height measuring from the surface the seat sits on to the top of the stem of 1.673" - 1.681" the service limit is 1.691". so if you add the .0015" shim you want to use to the 1.673" which is the least amount of stem you can have you get 1.688" which IS under the service limit. if you ever removed even .003" for one of the valve jobs you will be over the service limit. at that point you wont be moving the valve enough to let the ports breath.

 

It will be easier to get some keepers that puts the retainer down a lil.

 

Honestly I'm not really sure what you're trying to say here. Currently my installed height is too high. which is why I want to add a shim to bring it back in spec.

I understand I should probably have the valve seats replaced next time I rebuild the head...but for now I would like to use what I have.

The shims will not affect the distance the valve stem sticks out of the guide. It may be too high as well, but I will look into having a small amount machined off the top if there is adequate rocker to retainer clearance.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Master of the Universe &raquo;</TD></TR><TR><TD CLASS="quote">It will be easier to get some keepers that puts the retainer down a lil.</TD></TR></TABLE>

Nice. I thought something like this might exist but I haven't seen anything before.

Thank you I will look into finding some of these.

 

you can look at it two ways, the depth the valve sits in the seat or the height the valve protrudes from the head determines the springs installed height. you can change the springs installed height by shimming, the keeper solution rocket mentioned or installing a new seat. but it still doesnt change the fact that valve may be sunken to far into the head

 

And if you machine the chamber so there is no flow problem, tip the valve stem so there is no Mis-rocker alignment, and can run an oversize valve, or move the cam timing closer without V-V problems. The problem is what? This is why race heads cost more than +street- heads.
Go to any good cyl. head shop, they should have the shims, .015,.030,.060.