On a 216, if you don't have at least one valve that "clickity clickities", then how will you know that the engine is still running at a stop sign? My thinking on the subject of pal nuts is that they are there to prevent the separation of the connecting rod from rod journal once the babbit gives up the ghost, therefore saving the crank. If you read the factory repair manual you will find that if the crank has significant scoring, the crank must be replaced. There was no provision for turning the journals for undersized insert bearings (since the rods are poured babbit). I'm with you, I have a serious affinity with the 216. I'm currently running a full pressure 1953 235. It has more hp but is no 216.
