I would suspect that if it were to hang up between the exhaust valve and the valve seat, it would be for an instant as the temperature in that area is extreme. Besides, if he doesn't try it, how will we ever know if it works. I'll tell you what, if Jim doesn't try it, I will drop one in my freshly rebuilt 235 and fire it up, all in the name of science. Its up to you now, Jim. Do you want me to steal your thunder, or do you want to be the true pioneer? It may gain back our respect for you in spite of you dropping it in spark plug hole to begin with.
