The old one on the right is so "wallered out" that the original slot for the woodruff key is gone. That slinger was not slinging much oil, probably spinning sometimes and not others. The old timing chain tensioner had a fair amount of wear on it, and the chaim was stretched quite a bit, compared in both cases to their new replacement parts, indications of lack of lubrication. But I am really puzzled then by the sequence of events here. The engine appears very clean on the inside and has very good compression. Was the engine rebuilt and then not driven hardly any miles after the rebuild? And the rebuild included not installing the harmonic balancer correctly, ie leaving the oil slinger free to spin? Sure wish I could find a relative to Calloway Carmichael, the last owner when it was running and who died in 2003, to ask them some questions!
