I've got a set of World S/R Torquer cylinder heads I'm trying to get ready to put on my engine. I want to upgrade the valve stem seals to vitons, but I can't seem to find the right seals or even an accurate measurement of the size of the valve guides. I know the valves have 11/32 stems and I measured the guides with a caliper and came up with .578". I'm not sure of how accurate my measurements are, and the closest seals I could find online were for a .562" OD guide. Anyone know which size seals I need and where I can get them? Any help is greatly appreciated.

 

http://www.worldcastings.com/tech/sr...stironhead.doc

 

Yea I had the part # that was on there. The problem is those are the Nitril rubber seals and I was hoping to upgrade to teflon or viton seals. The dual springs I have are a little tight around the rubber ones. I know the valve stem size but I can't find the size of the valve guide anywhere. It isn't on that page or anywhere else on their site that I have seen.

 

Best thing to do might be to just get the guides cut down to .530" OD and use Teflon valve guide seals such as Comp 503 or Crane 99820. You can even buy the tools and do that yourself.

 

fel pro ss72527
I think that's what you want.

 

You could always call World and ask them.