[Fot] Valve Guides

[cofrog at q.com]

I see no advantage is using the bronze valve guides, especially considering the obvious down sides per Randall and Joe's input. Clearancing the bronze guides may be "common knowledge" to those having some experience with our motors but what of folks that have none? Even if a machine shop recognizes that bronze guides need clearancing would they assume the parts supplier were providing proper clearanced ones? I can see folks seeing the bronze units are more expensive and. they assume them to be superior to the iron ones. I've never seen any documentation from the suppliers of the bronze guides warning the buyer to modify their brand new parts before using them. 

I've run iron guides in the TR4 street car for years upon years w/o having to replace them and also run them in the TR4 race car which never has the mileage to wear them out anyway Too many pitfalls for no real gain over the stock ones. 

Dan Forgey