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Go Back   SailNet Community > On Board > Gear & Maintenance
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  #21  
Old 02-11-2007
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LOL....

Hmm... reduced flow of raw cooling water, a partially blocked heat exchanger, no thermostat, and crap tangled around the prop shaft... and you're wondering why it was overheating...
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  #22  
Old 02-11-2007
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yeah... call me a dumbsh*t. anyway, live and learn. at least i know my engine a bit better now.
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  #23  
Old 02-12-2007
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Hey, I wasn't calling you any names... it's actually good that you have had this experience now...since it makes it far more likely that you'll be able to solve any future engine overheating problems in the future...

I'd only call you a dumbsh*t if you hadn't gotten the heat exchanger flushed and gotten the broken impeller blades out of it. Basically, in this one experience you saw pretty much everything than can cause overheating in an engine.... all at once... Any one of those things could have caused it... In fact, I'm not too sure if there was anything that could cause it that you missed experiencing this go round.
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You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

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  #24  
Old 02-12-2007
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no problem i know you werent calling me anything, infact, i was the one calling myself a dumbsh*t!

like you said i would have never done it if i had not had to and if you guys didnt offer suggestions. i m extremely grateful!
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  #25  
Old 02-12-2007
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De nada... I would look into getting a Globe replacement impeller for your boat. They're designed to be able to handle running dry better than most. It is generally a good idea to have a spare impeller aboard in any case, and getting a Globe one might be worth the slightly higher price. Also, if you haven't gotten a replacement impeller cover, I would highly recommend getting one of the quick access design ones.
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You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

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  #26  
Old 02-12-2007
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funny you should mention that...i was just wondering where i should go to get a spare (s) impeller and cover. any suggestions. the old one is a johnson pump if that matters ...i m guessing these things must have standard replacement conversions...?
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Old 02-12-2007
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mrkeith...speedseal is the quick release impeller cover you should consider and here's also a link to the globe impellers which I think Defender carries.
http://www.speedseal.com/speedseal.html
http://www.globerubberworks.com/nav....ducts_impeller
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  #28  
Old 02-12-2007
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I forget the name of the company that made the speed impeller cover, but if you look in the back of most of the sailing magazines, you'll see them advertised.
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You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

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  #29  
Old 05-27-2007
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ugh i m back
i had the engine 'fixed' for the overheating, and the guy took off the cylinder heads and resurfaced them and put on a new gasket. in addition, he put on a coolant overflow tank so i could always watch the coolant level and i would know if i needed water/antifreeze. well, ignorant me i trusted this and i thought it worked pretty flawlessly over the past couple weeks. however, today i ran the engine for about 40 minutes and the dreaded overheat light came on, the engine was around 2300 and the oil pressure was around 20. i quickly shut off the engine and looked at oil.... fine. i quickly looked at overflow tank ...fine. the engine however was noticably hot, i looked at raw water strainer....fine..... so i took off radiator cap w/ a towel around my hand. alot off hissing/etc, but when i took it off and started to add coolant, just to see if it needed any (the overflow tank indicated it didnt but i would check anyway) the engine took about 2.5 ltrs of antifreeze! so clearly (?) the overflow tank doesnt work? anyway, w/ the radiator filled up, we started the engine, and a bunch !!! of green antifreeze came out of the wet exhaust, probably for about the first 45 seconds, then it cleared up again. so my guess is that there is some clue here that the problem never got fixed, the overflow tank doesnt work, and the antifreeze coming out of the exhaust for the first 45 seconds indicates that there is some violation in my fresh water/raw water system? any helpful suggestions? thanks alot again
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  #30  
Old 05-27-2007
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I have been following this thread with some interest. I am new to this forum but not to boat problems. The only place that the raw water and the FWC system come in close proxiemety is in the heat exchanger. You might want to pressure test the heat exchanger. You might have a leak in a tube.
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