My raw water cooled 3QM30 runs at 111 F.  I hate running a diesel that cold, 
but that is what the manual calls out as the design temperature.

I also have a very small raw water intake line, so pulling any cooling water 
away from the exhaust system would most likely damage the system.  

Pat
'79 C&C 38


On Monday, July 21, 2014 9:32 AM, Rich Knowles via CnC-List 
<cnc-list@cnc-list.com> wrote:
 


If you have a raw water cooled engine, I can see that working, except the 
thermostat should hold the temperature to around 160 F. 

However, you mention a circulating pump and a heat exchanger so I’m not sure 
whether you have a raw water cooled engine, or a closed cooling system which 
circulates the engine cooing water/antifreeze  through the heat exchanger coil 
in the water heater. Can you tell us if you have antifreeze in your engine or 
not? Is there an expansion tank on the engine?


Rich


On Jul 21, 2014, at 11:14, George Cone via CnC-List <cnc-list@cnc-list.com> 
wrote:

I wanted to run a thought by the list to see if my thoughts to install a small 
handheld shower in the back of the cockpit for rinse of and showering at the 
area of the wheel are feasible. My positive reasons for this is extra room and 
ease of draining and overall cleaning. I am considering connecting to the input 
hot water line before it enters the water heater coming from the engine. The 
boat is on fresh water , hence I would have unlimited volume of water 
available, I assume the water would be pure and clean even though it has gone 
through the engine cooling (heating) system, I also assume the temperature of 
the water to only be in the 110 degree level at best, and there is a 
recirculating pump (that normally recirculates the water from the engine 
through the heat exchanger) that can power the water to the shower wand.  So 
where is my thinking flawed?
 
Thanks,
George Cone
C&C 40
Vermont
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