**do valve's burn because they don't rotate or do burnt valves stop rotating?**
Are we assuming that the two are related? I'm not convinced.
I ran an exhaust valve that had 5/80 compression for hundreds of hours to prove that it wasn't leaking while running--only while static.
There is so much we don't' know.
As a savvy philosopher once said, "We can only be certain of that we do not fully understand."
Two things are for sure:
1) Yr Right will not/can not answer my questions,
and,
2) Valve seats rotating in our GA engines has taken this thread to another level.
I'm stuck in Mr. Peabody's "Way-back Machine" for sure.