Degreeing solid cam
01-07-2008, 02:08 PM
#2
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JUNIOR BUILDER
Join Date: Jul 2003
Location: U.S.A.
Posts: 80
01-16-2008, 03:09 AM
#5
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DYNO OPERATOR
Join Date: Aug 2005
Location: Rifle Colorado
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Wrong. The most important reason for degreeing a cam is to account for and correct the effect of production tolerances. The location of the keyways on the crank and sprocket, the location of the dowel on the cam and it's corresponding hole in the sprocket, and the orientation of the lobes on the cam, all have an "acceptable" range as deemed by the manufacturer.
As an example, let's assume that the production tolerances for the location of keyways, dowells etc is + or - 2 degrees. If the crank keway, the crank sprocket keyway, the cam dowell pin and the cam sprocket locating hole were at the max tolerance in the same direction, the cam could end up 8 degrees retarded or advanced with the dots lined up. Obviously, this will have a significant effect on performance.....so you degree the cam to make sure it's right and correct it if necessary.
As an example, let's assume that the production tolerances for the location of keyways, dowells etc is + or - 2 degrees. If the crank keway, the crank sprocket keyway, the cam dowell pin and the cam sprocket locating hole were at the max tolerance in the same direction, the cam could end up 8 degrees retarded or advanced with the dots lined up. Obviously, this will have a significant effect on performance.....so you degree the cam to make sure it's right and correct it if necessary.
