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SVTPerformance's Chain of Restaurants
A Taste of Home
Midwest
whos from wisconsin????
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<blockquote data-quote="ClubVenom1" data-source="post: 4590810" data-attributes="member: 47265"><p>4saken- the steel valve guides are more wear resistant than the bronze ones when the valve moves up and down in them. Thus the steel ones would seem to be the more logical way to go, but racers use the steel guides because the cam lobes they run arc the rocker arms to the point that the rocker arm center over the valve tip is to far to the edge of the stem center. Thus this puts a greater load to the inside wall of the valve stem and requires a greater wear resistant valve guide (for longevity of the motor). Now on a mod motor the finger followers (rockers arms) are pushing down on the valve stem at a much lesser arc, thus the wear is not as great. But yet there will always be wear. If you put in a good quality alloy/bronze guide (bronze/ manganese) you shouldn't need to put in steel ones, but the steel ones would be the best route to go.</p><p>Hope that helps.</p></blockquote><p></p>
[QUOTE="ClubVenom1, post: 4590810, member: 47265"] 4saken- the steel valve guides are more wear resistant than the bronze ones when the valve moves up and down in them. Thus the steel ones would seem to be the more logical way to go, but racers use the steel guides because the cam lobes they run arc the rocker arms to the point that the rocker arm center over the valve tip is to far to the edge of the stem center. Thus this puts a greater load to the inside wall of the valve stem and requires a greater wear resistant valve guide (for longevity of the motor). Now on a mod motor the finger followers (rockers arms) are pushing down on the valve stem at a much lesser arc, thus the wear is not as great. But yet there will always be wear. If you put in a good quality alloy/bronze guide (bronze/ manganese) you shouldn't need to put in steel ones, but the steel ones would be the best route to go. Hope that helps. [/QUOTE]
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SVTPerformance's Chain of Restaurants
A Taste of Home
Midwest
whos from wisconsin????
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