Valve noise after engine rebuild?

[MY1PATH]

I think a Shim washer BAD IDEA. for one becase of how thin it would need to be it would risk getting beat to hell in there. Think about it, the cam goin 3500 maximum RPM, heating and cooling constantly a .003"...

I had my locate plates machined, nissan can get them if you talk to the right ppl but its a long wait. I had them machined .005 concave oneside and .005 convex the other before I did the job. once I knew which way needed to go it was just a matter of sanding it down(280 grit) to the minimum amount play and then polising it some (400 grit wet)

[sewebster]

I think a Shim washer BAD IDEA. for one becase of how thin it would need to be it would risk getting beat to hell in there. Think about it, the cam goin 3500 maximum RPM, heating and cooling constantly a .003"...

I had my locate plates machined, nissan can get them if you talk to the right ppl but its a long wait. I had them machined .005 concave oneside and .005 convex the other before I did the job. once I knew which way needed to go it was just a matter of sanding it down(280 grit) to the minimum amount play and then polising it some (400 grit wet)

 

Well, there are two distinct situations. If your heads were too worn and you needed the shim on the outside of the locate plate, then that would be bad, because then the shim would have to rotate around on the sliding surface between the locate plate and the head. And probably it would get destroyed as you say, however my case is the opposite. I need the shim to be squished between the locate plate and the end of the camshaft, where it will remain immobile, never moving relative to anything. It will of course spin around with the camshaft, but that is irrelevant. So unless my camshaft bolt loosens, nothing bad can happen. And that would be bad with or without a shim.

Edited November 2, 2010 by sewebster