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Can cooling water be to cold on a Mercruiser
way's why the Mercruiser and all the other I/O systems that use automotive
engines( that I know of) do have a circulating system, same as you car.,and raw water flow isn't restricted by the thermostat on the inlet. They actually have been engineered to account for your concerns and ,amazingly they do work, with or with out "closed loop" exchanger system. The decision weather to use closed loop fresh water system is more often a practical one, if the engine is dificult (expensive)to remove or not is a big consideration (plus freezing concerns). The point being, why spend something like 500-1000 bucks for the exchanger system to protect a cheap car engine? The cooling system corrosion issues won't make the engine last forever anyway? That is unless you engine is buried deep under some nice stuff rather than being under a lift up engine cover as most of these setups are. To an extent you could think of these ase thowaway engines. They are relatively un-expensive and have limited useful life. Oh, but their cooling systems do work! -- Ron White my boatbuilding web site is: www.concentric.net/~knotreel |
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