Water in oil - How do you test for an internally cracked engine block. GM straight 6

Most Junkyards will have the engines already taken out and stored inside a wharehouse. They frown on people showing up with Blue Tip Wrenchs these days.

Just get a complete 5.7 Ltr engine. I picked up a Corvette LT2 common rail engine complete with computer that had only a couple hundred miles on it for a couple grand to drop in a boat.


you can get regular old 5.7 ltr engines pretty cheap as there are millions of them out there.

Thats the way to go.

Be sure to spray paint the entire engine with rustolium prior to using in a marine enviourment.

 

Are you telling us that the pic above is an engine you pulled out of a breaker

 

Nope.

The one I got out of the brand new Corvette had bright shinny Polished Alum Heads covers and intake manifold. I painted the rest of the engine to look like this one thou

Just add the ehaust manifolds and a fresh watercoolant tank and gasket up your altenator and poof you have a marine engine.

also use the Hydrauliic Steering pump as a aux hydraulic unit on the boat for a lobster pot winch. So it had a good use.


add an electric oil pump off the sump so that you can pre-lube the engine before starting and also do oil changes without getting the bildge all mucked up.
also add large duel 710 filters on the bulkhead near your fuel water seperators. Run the returns lines thru your heat echangers for maximumcooling and to boost the capacity to 10-12 quarts


Looked more like this but I painted the Block rustolium black to prevent corrosion from Salt Water.

The engine is a good choice for a smaller boat under 4,000 pounds or a pair of them for up to 10,000 pounds


Call around to junk yards and you may find one.






BE SURE TO KEEP 710 FLUID HANDY!

 

Best case scenario, the engine runs for some time (even years) before seizing.
Worst case through complacency, you loose all the water cooling, severely overheat the engine and get a nice crankcase explosion with secondary ignition killing everybody on-board.

 

You say you use the steering pump to drive a lobster pot. Did you do this or are you saying it might work?

You know, no one has asked him yet if his engine is raw cooled or sealed system, yet so many diagnosis.

(Crank case explosion from secondary ignition killing every one on board.)

Could you explain what this is?