3.0L running hot and milky oil

[purpony]

Just bought a 1989 Sea Ray 160 with a 3.0L. Got a great deal on it but the oil is a little milky and the owner said he thought it has a bad headgasket. Im leaning towards a headgasket as well because of the milky oil. Then my dad said something about it running hot, maybe the passages were blocked?

On that note, I was searching around the net for 3.0L 4 cyl engines and seams that they all come up as marine engines. Since its a chevy block, did the 3.0L 4 cyl come in any gm cars? and is the engine the same? All the 3.0 gm engines i can find is a v-6.

Id love to but a 4.3L v-6 in the boat but not sure if it would fit or if it would mate to the outboard drive?

any info would be great.

thanks!

 

[Arizona240DA]

It does sound like you have water in your oil, and it is most likely due to a gasket issue...

I'm not sure as to your other questions concrning the engine, but am sure othes will chime in with good info...

C-

Just bought a 1989 Sea Ray 160 with a 3.0L. Got a great deal on it but the oil is a little milky and the owner said he thought it has a bad headgasket. Im leaning towards a headgasket as well because of the milky oil. Then my dad said something about it running hot, maybe the passages were blocked?

On that note, I was searching around the net for 3.0L 4 cyl engines and seams that they all come up as marine engines. Since its a chevy block, did the 3.0L 4 cyl come in any gm cars? and is the engine the same? All the 3.0 gm engines i can find is a v-6.

Id love to but a 4.3L v-6 in the boat but not sure if it would fit or if it would mate to the outboard drive?

any info would be great.

thanks!

 

[Lazy Daze]

Straight and simple... do not use a car engine in a boat.

 

[mvoellinger]

Straight and simple... do not use a car engine in a boat.

+1

They are marinized car engines, but are not direct replacements. A lot of components are different (starter, alternator, etc) to protect from ignition sources, and some are different due to the environment (different gasket materials, etc)

 

[purpony]

got the boat home today and pumped the oil out. Also pulled the plugs and cylinder 4 was full of water. Pumped the water out. Plan on doing a compression test in the morning. Im leaning towards a leaking riser manifold?

 

[tobnpr]

That would do it.
Depending how long the bottom end has been sitting in this oil/water mixture, the bearings may be shot. How long has the engine been sitting like this?

 

[purpony]

about a month or so. Lucky its fresh water and not salt. The owner i bought it from didnt know much about engines. Guess ill know more tomorrow when i look at it a little closer.