I though I'd post this here first before I post on FB. FB replies tend to be quick and more of a reaction as apposed to reading the question at hand and offering an intelligent response.
Here is my problem. I changed the oil and filter on my M35B. There was no problem with the motor leaking oil until I changed the oil and filter. Once the motor was started and when the engine warmed up a bit oil started leaking at the place where the engine block meets the gear case housing and it occurs right where a bolt that helps secure the gear case to the block, which happens to be right next to the oil filter. Let me stop every one of you who are going to say "it's the filter", or "did you apply oil to the filter gasket before screwing it on". The oil leak is where the gear case meets the engine block. You can see in the two attached photos with a red line showing exactly where the oil is leaking from. I tried tightening down all the gear case bolts and it didn't change the oil leak. I removed the gear case, replaced the gear case gasket and the four o-rings and after re-assembly. The oil leak cam back in the same place. I am going to remove the gear case again and perform a dye penetration test. Even though I hand tightened the oil filter, the fact that there was no oil leak until I changed the filter makes me believe the there is a fine hair line crack in the cast aluminum gear case at or near the oil filter. I am posting this in hopes some one has a true insight into an issue like this.
I have received a price for a new gear case from Westerbeke. I went into cardiac arrest. I know that my M35B model is a V1305-E Kubota block. When I called a big Kubota dealer and gave them my serial number of my engine, the Kubota web sight refused to let them get the correct Kubota part number. I suppose they have gone to bed with Westerbeke and locks out anybody but Westerbeke. Has anyone here replaced their gear housing on a M35B and got the part from a Kubota dealer. I feel like there has to be a way to get that part from Kubota without a bottle of oxygen and a EMS truck out front to revive me.
2003 Catalina 36