Quote:
Originally Posted by jt3kids
Hey NB. why up the T-stat to 165?. just curious. original equipment is 130. thanks, Jim
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RAW water cooled boats run in salt water are usually run with a low temp T-Stat..say 140 because if you run them hotter than that (ie Raw Water Cooled) you will likely Salt Up the cooling passages in the engine which is not good.
MANY people with boats used in salt water order the boat NEW with Closed Cooling...or retrofit it soon afterward. This system is also pressurized like your car, and can run hotter without boiling the coolant. The cost used to be something like $2K or more. The engine never sees salt water....just fresh water and anti freeze in the block. There is a heat exchanger to get rid of the heat.
ALL this allows the engine to run hotter which is MUCH more efficient..AND Best of all...the engine will not wear out nearly as fast as running it COLD. Your modern automobile typically runs at 187-190 degrees F.
If your boat came with a 130* T-Stat, it may have been
originally sold by a dealer near salt water.
My 1986 Mercruiser V8 is run in salt AND fresh water with a 165* T-Stat. HOWEVER: After
each salt water use, the boat is hauled out on the trailer and the system is Flushed with fresh water. The boat never stays overnight in salt water.
Having the
Luxury of running your boat in fresh water ALL or most of the time, it just seems logical to take advantage of that.
NB