Valve lash.. Hot /cold ? How hot is hot?

I like the approach. I have silicone/rubber valve cover gaskets for easy removal. You indicate that the "difference" should be less. Are you of the camp that says that it will loosen up .003 as it heats up? Or that it will tighten as it heats up. For a .016 lash, would you cold set at .013?

I will set and measure all my valves and perform the test to heat them up and measure again. I will post all results.

For what it is worth, I set the original flash cold to cam card specs. Meaning that I was actually looser than I should have been. For those who follow/followed my degreeing cam thread, I now know that the cam events were retarded even more than the 8*retarded that the cam/crankshaft orientation said. By how much, I will have to do some studying. I will post if anyone is interested in how much .006 loose lash affects cam timing.

The only way to know for sure what your cold lash should be is to test it. No two castings are the same, so they don’t grow at the same rate. Checking one engine and claiming they all do the same thing is not real world.