Reply To: 1972 85 hp V4 water circulation?

[amuller]

Yes, that’s the opening I used. I used a 1/8″ hose barb and a 1/8″ ID hose to a hole drilled in the pan almost directly below. I used another barb to make sure the hose could not slip out of the hole and spray water all over the power head. Drillng and tapping the very top of the water jacket would be idea but didn’t seem worth the extra effort.

I think you are right about not supplying enough water. I was concerned about over pressurizing the motor–water pressure here is close toi 90 psi–but then I realized that the muffs are spring-loaded onto the leg and would probably relieve excess pressure.