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#2
04-27-2017, 03:21 PM
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Good for you! just watch out for a hydraulic lock if its leaking into the cylinder.
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#3
05-02-2017, 01:43 PM
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Sounds like you have a few issues going on. The head gasket probably needs replacing and resurfacing or replacing the head will help it seal better. If you do it check and clean out your exhaust manifold really good and check and or replace your riser. Seen a lot of good running motors ruined by overheating and bad rotten risers and clogged manifolds.
__________________
 77 V20 cuddy with 170 I/O Mercruiser 72 16ft. Carolina w/a 25hp Evinrude
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#4
04-13-2018, 12:55 AM
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Sounds like you have a head gasket leak caused from a corroded head or block could be only gasket What you have done may work but all it will do is cause the leak to get bigger quicker .Yes your engine will never get hot now and long as you know that when you have water problems from leaks out of the block you wont be able to fix them.Also all that sealer you put in the cooling system will no longer seal what it use to as the salt water is affecting it and the leaks you have may of started because of that..I would keep a eye on it all the time as it may get worse and start filling your hull with water make sure you have a working pump lol
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#5
04-13-2018, 05:55 PM
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Quote:
__________________
1987 V20 w/1987 150HP Yamaha on a Shoreland'r Trailer 1978 16.5 Airslot w/1996 120HP Force on a Four Winns trailer 1996 V21 w/1993 200HP Mercury on a Shoreline Trailer All towed by a 5.7L Hemi Durango. If God didn't have a purpose for us we wouldn't be here, so Live simply, Love generously, Care deeply, Speak kindly. (Leave the rest to God)  Silence, in the face of evil, is itself evil. Not to speak is to speak, not to act is to act. God will not hold us guiltless.
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#6
07-04-2018, 01:22 AM
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Hey guys OP here .... thanks for the input. It’s 4th July 2018 and so far so good with the merc. I was hoping to get another year out of it and things seem to be running well. I use it pretty regularly at least 1-2 times a month to keep it going. The overheat was just such a bust I would recommend a raw water bypass to someone as last resort.
My theory is that I had a small leak behind heat exchanger between block and head that was causing loss of pressure and it would boil over. Couldn’t see it with heat exchanger mounted. And fluid coolant boil over masked the leak.
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