Trouble turning over

1500*+??? you sure? I mean a diesel is around 600* to 1200*

I doubt that a 230 hp gas job would get 1500*....

But yes, interested in the bypass method... I mean, you can rid of the mufflers but thats it. Unless you mean the $2,200 stainless headers (I doubt that...)

seanster1987 wrote: I might straight pipe it and bypass the exhaust manifolds all together. Any thoughts on that????

WTF?????

1) Marine exhaust manifolds are not constructed like auto manifolds. they're two thin cast walls with cooling water in between. Without water, they could crack in a matter of seconds and potentially the reason (one one of the reasons) you have water in the oil right now.

2) When properly cooled, you can lay your hand on the exhaust manifolds and it should be cool to slightly warm to the touch. You should be able to hold your hand on them for as long as the engine is running. What do you think will happen without cooling and they heat up to 1500+ degrees in the confines of closed engine compartment surrounded by fiberglass?

Thanks for all the tips. I might straight pipe it and bypass the exhaust manifolds all together. Any thoughts on that???? I replaced the starter because it was the original 78 starter and wasn't engaging anymore. Didn't want to have it rebuilt so put something nicer that will last longer

seanster1987 wrote: Could it have to do with the thick sludgy milky colored oil and water mix?? Thanks for any advice

Umm yeah, yeah it could. Ockams razor would postulate that it is more than likely. If you just have a manifold leaking water in the exhaust valves then you may have gotten enough water in the right combustion chamber at the right part of the stroke to hydrolock the engine. As in the piston is trying to compress water instead of gas and it no can do.. this would be bad. It’s a good way to bend connecting rods, etc. Take out all the plugs and see if you can rotate it over by hand with a breaking bar on the crank. If that works, then spray a bunch of fogging oil in the cylinders, change the oil, rotate the engine with the starter, spray, rotate, spray, rotate, pray, compression test, replace exhaust manifolds, and give it a try.

If it still doesn’t turn over with the plugs out then I would fear that you have stuck and spun a bearing (either main or connecting rod) due to running an engine where there is water where oil should be. That would require a rebuild, minimum, maybe a replacement if water was coming not only from the manifolds but also from a cracked block due to something like improper winterization.

You may also have stuck a exhaust valve (dropping water on hot exhaust valves from the exhaust port doesn’t exactly keep them corrosion free and happy) which could have then broke and made its way somewhere to cause trouble… anyway hope for the first scenario… good luck – remember anything can be fixed!

Sean,
It's sounds like the milky oil is not related to the noise. Do check out the manifold problem as water in the the oil is not good. Regarding the noise, I suspect a damper plate failure. When they go, it's common for pieces to get wedged between the flywheel and bell housing.

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