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Make and brake cooling

Old Marine Engine » Atlantic - Lunenburg Foundry » Make and brake cooling « Previous Next »

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Steven Robertson
New member
Username: creter

Post Number: 1
Registered: 08-2017
Posted on Wednesday, August 30, 2017 - 06:03 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I am curious if anyone has ever run a make and break engine with a closed loop cooling system. Seems to me this would prolong the life of these engines. Be it a heat exchanger or cooling tubs along the keel.
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Ned Lloyd
Senior Member
Username: ned_l

Post Number: 153
Registered: 08-2012
Posted on Saturday, September 09, 2017 - 09:23 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Sure,... why not. Easiest with keel cooling, other than doing something about the exhaust only the one water pump is needed (could run a dry exhaust). A heat exchanger needs a second water pump,
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Robert
Senior Member
Username: robert

Post Number: 905
Registered: 07-2003
Posted on Tuesday, September 12, 2017 - 10:45 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Most didn't bother, but occasionally you find an engine out West where this was done. Those are almost the only engines that survive long-term. The keel cooler produces some drag of course. I wonder if a more or less straight pipe with inlet and outlet below the water line, running into and out of a heat exchanger would not provide sufficient flow when under way, and could perhaps be tucked down by the keelson, where the bilge water could help as well!

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