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Discussion Starter #1
I realize the skimming process removes a tiny amount of material but still, since the head is "smaller" do the valves need to be shimmed?
 

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Depends on how much is shaved. Unless your heads are warped, there is no need to shave the heads. Shaving the heads reduces valve clearance to the piston in addition to raising compression ratio. If you have to shave your heads there is a very VERY small amout of wiggle room before you have to shem the rocker stands. I am not sure what that amount is, but my neighbour can quote it off the top of his head. :roll:
 
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