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Author of "101 Projects"
Join Date: Jan 1995
Location: Rolling Hills Estates, CA
Posts: 27,056
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Agreed, knife-edging is a bit extreme, and reductions in the case supports are not recommended for the mag cases. The Knife-edging makes the crank more aerodynamic so that it reduces air friction when spinning around inside of the case. Makes sense to do on a race motor when you're trying to squeak even one more HP out...
-Wayne
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