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Old 02-11-2013, 09:07 PM   #81
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Originally Posted by Marin View Post
I think Simple Green falls in the same category as the "pink stuff" RV "non-toxic" anti-freeze or Sierra "non toxic" engine anti-freeze. While it may not be as harmful as other products, I don't think it's smart to treat it as something that can't really hurt you no matter what.

As a matter of fact in my opinion you are exactly right, and thats all i was trying to warn people of
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Old 02-14-2013, 07:00 AM   #82
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Originally Posted by yachtbrokerguy View Post
Fred, I have not seen an over temperature shut down on a main engine, yes on almost all generators but not mains. I have always been told it was a safety issue. The surveyors concern was not air conditioning, water maker, or other auxillary systems but a very expensive main that could overheat.
I agree with valves on heater systems plumbed to main engines. Most of the pics posted on this forum show heaters adjacent to the engines where the plumbing gets inspected routinely. In many cases the heaters are remotely mounted where they may not receive routine scrutiny. Especially by paid help.

I don't recall who makes them but there are water heaters built that have aluminum nipples for the engine heat side. I have found at least six of these plumbed to raw water cooled gas engines. One of these units failed when I tugged lightly on its hose to see around it. In another instance I found one leaking into an aft cabin area unbeknownst to its owner.

There are more atypical boat owners on Trawler Forum than you typically find in this business on a day to day basis. When you work with most folks who aren't up to speed and see their remotely mounted water heater (not in the engine room) is connected to there $40,000 main propulsion diesel and they never leave the dock without their generator running what would you suggest... Oh yeah, the engine heater circuit line is plumbed with reinforced clear plastic hose rated for a maximum working temperature of 130 degrees F!
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Old 02-14-2013, 07:55 AM   #83
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Originally Posted by yachtbrokerguy View Post
I have not seen an over temperature shut down on a main engine, yes on almost all generators but not mains. I have always been told it was a safety issue. ............
There could be situations where it's better to overheat the engine than to lose power unexpectedly.

Obviously, you're going to have to find and correct the problem pretty quickly, but the few minutes you have may be the difference between anchoring safely and drifting onto the rocks.
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Old 02-14-2013, 06:14 PM   #84
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There could be situations where it's better to overheat the engine than to lose power unexpectedly.

Obviously, you're going to have to find and correct the problem pretty quickly, but the few minutes you have may be the difference between anchoring safely and drifting onto the rocks.
I'm not familiar with any of the new inboard boat engines but all the trucks i have owned since 97 have been Fords and all of them have had fail safe cooling systems. When there is an over heat condition the computer cuts engine power back but keeps it running so you can make it to a garage. Has that system or one like it made it into the marine world yet?
Would be more important to have this feature on a boat than a car
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