I have a 75 310R with a wet vac. system. Even with new engines and props I still get an excesive amount of blow by coming out and making a mess. Anybody have any ideas?
Yeah, but just my ideas, off the top of my head 😉
Mine are TSIO-520-EB’s with wet vacuum pumps. We (my AP/IA), check/clean the oil breather separators at each oil change. If they get dirty or the oil return line is plugged with junk, the oil goes “over the side” and makes a mess. Same for the separators on the wet vacuum pump exhaust. There is also a filter in the boot system that deserves attention.