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Showing results for tags 'rocker grind sand 240z l28'.
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Some pics of cleaning up a rocker. Here is what a "good" used rocker looks like. It has had a lot of quality time with the cam and polished to shine with smooth undulations in the surface. Not much surface for holding oil when so shiny like chrome. Here are the 3 best rockers out of a used set of 12. I refreshed the worst of the 3 by using a flat slab of marble and sand paper. I measured variance to be 0.001" across the surface's peak. The front (engine side) is where the drop off is. It was interesting that simply placing the rocker on the flat surface gave the results; so it seems the machining surfaces are parallel (see below) and registered off the bottom of the rocker. Pulling the rocker towards me with 500, 600 then 800 grit accomplished the following: I did the same for the lash pad side. I took off the ridge and the surface's peak was measured to be less than a thou. across the surface. The ridge (the silver square is actually indented) took a while at 500 grit to remove. To finish, I washed thoroughly with detergent to remove all abrasive then coated with Clevite 77 break-in lube.
