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From: Lew Hodgett (no email)
Date: Sat Jan 03 2004 - 20:44:41 EST
"Ron Rogers" writes:
> Defeats part of your goal. Fresh water cooled, small diesels run at
> about
> 180 degrees F. You indicate that yours runs at 130 to 140 degrees F.
> Keep it
> that way and you will have less heat buildup in your boat. Besides,
> you
> already have suffered some internal corrosion.
<snip>
Most of the raw water cooled Yanmars I am aware of are of the YSM family
and those one lung beasts are at least 25 years old.
The discharge water is well below 120F.
I replumbed one to use the hot exhaust water to heat potable water before
it was mixed with the excess cold raw water and sent to the mixing elbow.
I knew exactly what I was doing and it worked quite well; however, I also
had the necessary instrumentation to do the job properly.
Make a mistake and you have an engine rebuild on your hands.
HTH
Lew
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