rear seal

Hey All, Just got a free Catalina 30 (I know, I know: nothing more expensive than a free boat!) The boat had a couple of feet of water in it when I got to it. The water did not reach the air intake fortunately, and the oil was clean. When I got the boat running, however, I noticed a...

Hey everyone I was hoping maybe somebody had some info I'm looking for. I have a yanmar 4jhe and I am leaking some oil from the rear crankshaft seal. I have replaced it and it is still leaking. I have surface rust and it is pitted. Does anyone know the dimensions of the diameter where the...