I've got the crown grind fixture for resurfacing rocker arms, but it doesn't have nearly a large enough radius to reface the bottom surface of a valve lifter. I'm thinking I'll need at least a 2 foot radius to contour the bottom of the lifter for a slight crown capable of making the lifter rotate as it runs on the cam lobe. A fixture that clamps to the ways of my lathe and holds a die grinder at that distance, plus a lifter holding fixture that extends the same distance from the chuck is what I have in mind. I'll swing the die grinder with a fine grit stone in it across the face of the lifter as it rotates to re-establish the radius.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
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