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Author of "101 Projects"
Join Date: Jan 1995
Location: Rolling Hills Estates, CA
Posts: 27,056
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For those not in the know, the crankshaft in these pictures has been "knife-edged", which is used to reduce air friction inside the case as the crank turns. Not really necessary for street engines, but good for race engines, when you're trying to extract every last ounce of horsepower...
-Wayne
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