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post #1 of 2 (permalink) Old 03-12-06, 12:59 PM Thread Starter
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water jacket cleanout

I have a 460 in my boat.
the boat is overheating
engine is out of the boat.
After checking out everything else, I popped the freezeplugs and noticed that about the lower 50 percent of the block is filled with a mixture of mud and rust. I guess thats why its overheating.
I cleaned out all around the freezeplugs using my fingers and a shop vac, and was able to remove all of the crap that was within 1 inch of each plug(3 plugs per side)
Now, the question is, how do I remove all the gunk that is built up on the front side of the motor and the backside?
I don't want to hot tank the engine, mostly because it would mean a complete rebuild, which is a little beyond my capabilities.
Please help me to avoid a costly repair!

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post #2 of 2 (permalink) Old 03-13-06, 12:57 AM
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Location: brisbane
Age: 51
Posts: 617
Re: water jacket cleanout

Since the engine is out i would remove the heads and water pump.Tape up the bores + rest of engine to keep water out and pressure clean the block.That would be the only sure way to get it clean.I had to do this a few years ago with a clevo that sat with no coolant and you could have shovelled up the rust and dirt that came out.
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