Water in oil treatment?

[MountainManMyke]

I just picked up a boat for nothing and it has a Omc inboard and found water in the oil. I started to pump it out and pumped
about 5 liters of water out before i got to the
oil. My question is what can i pour into the engine and down the cylinders before i put new oil in it? I just wanna crank it over and check the compression to make its the head gasket and the engine is still usable

 

[Bondo]

I just picked up a boat for nothing and it has a Omc inboard and found water in the oil. I started to pump it out and pumped
about 5 liters of water out before i got to the
oil.

Ayuh,.... Just dump in 5 quarts of cheap oil, 'n light it off,....

My guess is, the oil level will rise as ya run it, from a Cracked block,.....

 

[HT32BSX115]

I just wanna crank it over and check the compression to make its the head gasket and the engine is still usable

It would be better to pressure check the cooling system.

No sense in wasting money on a battery and oil if the block is cracked.

 

[Scott Danforth]

Pressure test it. Is this the 3.8 you picked up, or the 3.0 tour trying to fix?

 

[MountainManMyke]

I have a blown 3.0 that is garbage. I got a boat given to me that has the 3.8. The 3.8 is the one that had water in the engine. Just seeing if i can salvage this motor since its not costing me anything to do so.

 

[vasy]

There is nothing to salvage.
Go buy either a rebuild block and swap or if you want to the cheap, try to get a car block and swap parts.
There is no real fix from a cracked block except replacing the block.

 

[Scott Danforth]

it would depend if the 3.8 is a kaiser/jeep/buick based 225 block, or the very short lived and rare chevrolet 229 block

 

[Bondo]

I have a blown 3.0 that is garbage. I got a boat given to me that has the 3.8. The 3.8 is the one that had water in the engine. Just seeing if i can salvage this motor since its not costing me anything to do so.

Ayuh,.... Sounds like yer at a major crossroads,....

Now ya got 2 boats with badly broken motors, 'n questionable drives,.....

I'm thinkin' the drive with the 3.0l is a Stringer 400,....
I don't think the Stringer 400 was used with the 3.8l motor though,.... probably an 800,...