I think the limiting factor on the valves, particularly the exhaust, is keeping them properly adjusted. If you do that, you won't have any problems. The first KR got them adjusted every 25 hours with the oil change, and so will this one. I never had any problems with the valves on that engine.
Regarding stainless valves, this engine has stainless, but I wonder if they dissapate heat as well as the stock valves. See N64KR at http://KRBuilder.org - Then click on the pics See you in Mt. Vernon - 2006 - KR Gathering There is a time for building and a time for FLYING and the time for building is OVER. Daniel R. Heath - Lexington, SC -------Original Message------- Subject: KR> are the exhaust valves the limiting factor in the vw
