monster12valve

Hi guys. My boat is finally dialed in, so I am trying to help a friend. He has a 468 with Gil's. The boat runs great, but when he shuts it off... Couple hours later... He has water in oil. Any ideas? I was thinking exhaust issue. The boat can run all day and not mix, shut it off.... Screwed.

mike tkach

iTrader: (3)

maybe a bad oil cooler.

monster12valve

Thank you for the reply, is there a way to test it?

mike tkach

iTrader: (3)

yes,remove it and pressure test the water side.

30ftpanther

iTrader: (1)

How much pressure,20-25psi.????????

kvogt

If the oil cooler is leaking you normally loose oil into the water system. Oil is 60 psi and water is only 15 or so psi.

getrdunn

iTrader: (7)

Does he have the turbulaters installed btwn the risers and manifolds. Also what kind of cam is he running?

Baja Rooster

iTrader: (1)

So while it's running the oil would be pressing out into the water, but if it's leaking bad enough than water can drain back into the oil when it's under no pressure, right? I'm asking for myself as well.

monster12valve

Not sure about the turbulater... I will check. He is running a pretty good size cam, I will get actual specs from him later this evening.

kvogt

If it is leaking bad enough you run out of oil quickly.