Jim Brewer wrote:

Paul,

Thanks to all who replied to my request for the part identification. I now have another question for the brain trust. My front,
rear and intermediate housings have wear at the "tip of the football" area that is worn to deep to meet the tolerances set by
Mazda--> .005 inch. What is the best way to resolve this without buying replacements?

Lapping would work but costs $250 (too much), grinding for $125-150.

I asked the the machinist that said he could grind them if there was a way to lap after grinding to get a better surface without
spending a fortune (poor man's lapping). Yes, he said, you could lap the surfaces by hand with lapping compound using a circle 8
motion like the guys that make homemade telescopes do. What do you guys think about grinding and hand lapping? Should I do it?
13B is for a car.

Jim Brewer

 
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