Steps to MerCruiser Starboard Head Reinstallation In preparation for MerCruiser Starboard Head Reinstallation I just got the cylinder heads back from the machine shop. First, the heads were clearly from the original engine. They were in rough shape, to say the least. The intake and the exhaust valves, and seals were leaking. Additionally, the valve seats were cut with a drill and a grinding stone. This is apparently not the…