Leaking SS Auqulift Muffler - SailNet Community

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  #1  
Old 05-23-2006
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Leaking SS Auqulift Muffler

I have a 57' Roberts sailboat with 150 HP Isuzu that pushes through a SS Auqalift Muffler. I have a solanoid valve that draines the saltwater out of it every time the engine is shut down. I also have a zinc in the muffler. I just had a seam leak and am having the muffler welded. I was thinking about epoxy coating the inside of the muffler to help slow down the corrosion. I have done this with jet fuel tanks and if works quite well. Does anyone know if this will work on the exhaust system? Some people say I am better not to drain the saltwater from the tank after every use and just leave it in the muffler. Any suggestions are appreciated.

David
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Old 05-23-2006
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Well last year I replaced an ordinary steel ONAN aqualift muffler that started leaking. It was original in the 1972 boat, so it had lasted albout 34 years. I think you should seriously think that you are doing something wrong.
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Old 05-24-2006
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I am not sure what I could be doing wrong... I have a stainless steel box with salt water and diesel exhaust going into the muffler. I am asking people who may know if leaving the muffler full of saltwater after shutting down the engine is better than draining the water every time, and if adding an epoxy coat to the inside will help the muffler from corroding.
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Old 05-24-2006
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Well it sure sounds like you are doing everything right, although draining the muffler on shutdown sounds like overkill. Maybe it is a defective unit. Ask the guy who welds it up for suggestions.
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