I pulled the B20F out of my 1800ES today. With the head off I inspected the cylinders for wear. Looked good, cross-catching still very visible. I'm going to put new piston rings on, all new gaskets and seals, and an all new valve train. Culprit of the "mysterious noise", camshaft gear. The fiber gear pretty much fell out with the cover off. I'm going to replace it with another fiber one for now, though I'm hunting for a B30. Because the cylinders aren't exhibiting much wear I don’t need to do a full rebuild, right?
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