Cooling down the Merc Trans

Old 08-14-2008, 11:41 AM
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Default Cooling down the Merc Trans

I have been told to directly route the discharge side of the merc trans cooler thru the transom instead of thru the exhaust manifold. Sounds simple enough.... Anyone have a suggestions / comments on this or pics? I'm always a bit nervous when it comes to drilling holes in my boat.

Thanks
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Old 08-14-2008, 12:13 PM
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It is highly recommend vs. running the discharge out the exhaust. I ran both of my discharges out the same side...I can take a quick look and at my cooling water flow and know I am pumping water. I got some nice tru hull S.S. fittings from Eddie marine that were for 3/8th hose and they look great.
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Old 08-14-2008, 01:05 PM
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a little of topic but how much hp. are you guys putting through those merctrans?
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Old 08-14-2008, 02:35 PM
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So you went out the side (I'm assuming the right side) near your bilge thru hull?

Thanks for your reply[


QUOTE=Westcoast;2653542]It is highly recommend vs. running the discharge out the exhaust. I ran both of my discharges out the same side...I can take a quick look and at my cooling water flow and know I am pumping water. I got some nice tru hull S.S. fittings from Eddie marine that were for 3/8th hose and they look great.[/QUOTE]
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Old 08-14-2008, 02:36 PM
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Just stock 454/330HP

Originally Posted by 98itrwhite View Post
a little of topic but how much hp. are you guys putting through those merctrans?
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Old 08-14-2008, 04:05 PM
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Mine are run with 3/8 thru hole out the transom near the exhaust.
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Old 08-14-2008, 09:24 PM
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Originally Posted by 98itrwhite View Post
a little of topic but how much hp. are you guys putting through those merctrans?
330's w/holleys and HEI.
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Old 09-09-2008, 06:21 AM
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Originally Posted by Wsh3marine View Post
I have been told to directly route the discharge side of the merc trans cooler thru the transom instead of thru the exhaust manifold. Sounds simple enough.... Anyone have a suggestions / comments on this or pics? I'm always a bit nervous when it comes to drilling holes in my boat.

Thanks
Bill,

I have dry pipes so all my water discharges through the black fittings you see in the picture. As I rebuild the boat these are being replaced with SS through hull fittings.

...Jim
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