JD Distributer cams

[aumick10]

I have a few distributer/timer cams here. Most of them have corrosion on the points bearing cam. Is there any way to recondition this surface so the points heel doesn't wear out prematurely 20250125_090726.jpg ? Cheers

[exeric]

Hard chrome, and regrind would restore the original profile, but you would have to find the right (microscopic) machinist to do that properly. I would just keep replacing points as I think that would be the most economic path for a motor that isn't expected to deliver high-performance.

[jim d]

What about glass beading the cam and using high temperature silver solder to fill the pits. Then remove the excess silver solder down to the base of the cam leaving just the pits that have been filled with the silver solder. Just a thought , I would experiment on something first before I tried it on a good piece.

[aumick10]

I though about copper coating first, then remove the excess.

[exeric]

Hard chrome, and regrind would restore the original profile, but you would have to find the right (microscopic) machinist to do that properly. I would just keep replacing points as I think that would be the most economic path for a motor that isn't expected to deliver high-performance.

Microscopic? What a weird thing to write. I meant to imply that a good machinist would be essential in getting the cam profile correct if it was hard chromed. The problem with any kind of plating, or filler is flaking. I have to think that carefully stoning the cam surface to make it smooth would allow the fiber block to ride on the cam without too much abrasion.

[aumick10]

I think there is a company a few hrs away that can regrind distributer cams. Will contact them to see if they can do anything, then decide if i need to build up the surface first.

[jim d]

The heavy copper plating is used to fill pits in steel when restoring a piece to chrome plate it. They fill it with copper and sand it down to the original surface to level it.