KCFormula
11-19-2002, 02:48 PM
I would like to go with a higher ratio rocker arms when I rebuild the heads this winter. When higher ratio rocker arms come into the picture I realize that the valve guides suffer from a higher degree of wear. I was wondering what material I could use to run a tight tolerance (so as to not get oil into the combustion chamber) and still retain longevity. If I were to run something soft like bronze guides and seals couldnt I run a tighter tolerance like .0006 in.? And if I were to run something a bit harsher to hold up to the added wear better could I retain that same tolerance?
Also is there any materials that mate good for the valve to guide friction ratio? ie, If I were to run bronze guides and titanium valves vs bronze guides and aluminum valves? Or should I have the valves coated with some sort of friction reducing coating?
As a P.S.- A friend of mine said that 2.00 valves can be used in an LT1 head without reworking the valve seats. Is he correct?
Also is there any materials that mate good for the valve to guide friction ratio? ie, If I were to run bronze guides and titanium valves vs bronze guides and aluminum valves? Or should I have the valves coated with some sort of friction reducing coating?
As a P.S.- A friend of mine said that 2.00 valves can be used in an LT1 head without reworking the valve seats. Is he correct?