crankshaft bolt on damper turning tool

[randy wilson]

Originally Posted by Ed Wright

Randy, if your cam is ground properly, your valve lash will be the same anywhere on the base circle. If not, it has some base circle runout. It should not have that.
If it does, where in that diameter variation, do you choose to set the lash?

I've just found out that on the base circle, I can be perfect in one spot, and bump it, be perfect, hit it again, and be a couple loose. I've found this on about every grind from every company to be true. I always set tight at the loosest area of the bottom. I set my valves rather tight anyway, but that's just me. Try it and see if you get the same results. Now you have me curious.