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Old 20-01-2012, 21:08   #16
Formerly: Capt Wraun
 
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Join Date: Sep 2011
Location: Port Louis, Haida Gwaii (The edge of the world)
Boat: Corbin39 CC Cutter Rig
Posts: 431
Re: Raw water system plugged

Quote:
Originally Posted by donradcliffe View Post
Was the 3 gpm at idle or WOT??

From Jabsco:

What cooling water flow rate does an engine need?
On average, petrol engines and fast-running diesel engines with direct cooling require a raw water flow of about 36-39 litres (8 - 8.5 gallons) per minute for each 75kW (100 bhp) of engine power. Engines with indirect cooling require more flow: about 65-70 litres (14.5 - 15.5 gallons) per minute for each 75kW (100bhp) of engine power.
Thanks Don, that would also equate to 3 gpm. My 35HP would be 26KW or roughly 1/3rd of (rounded up) 9 gpm. Great responses guys, this is a great site and I'm very happy to be a part of it.

Thanks eh!
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Old 23-01-2012, 08:46   #17
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Re: Raw Water System Plugged

Just a little update: We motored her up the coast to her new home on Saturday. 7 1/4 hours at a steady 2200 rpm @ just over 7 knots and maintained an even temp of 180*F.

What a fun ride too. We had the tides in our favour but went through a couple of hours of washing machine waters. It was pretty rough but what a riot. The boat handled it without a wince or a groan.

I've got myself a damned good boat!
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