Quote:

Quote:

I did have 0.020" rocker shaft shims, could that have caused the problem?



I've heard the shims will do that?? seen pictures hear or elsewhere of failours of more than one stand. puts uneven forces to outsides of stands or something like that???
Where they proper shims or just shims??





Ok, on further inspection it looks like it was the shims. I got the shims from Hughes, and I thought they were tapered, but maybe not? Anyhow, it looks like the shims (and me torquing down on the studs) wedged the shim between the stand and rocker shaft splitting the stand in half.

Anyhow, I have the new stands and I'm taking the whole thing to the machine shop tomorrow along with lash caps for the valves. I will have the machine shop set up the rockers for correct alignment with the 0.060" thick lash caps.