Exhaust System Q - Genie 12-150

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Exhaust System Q - Genie 12-150

Postby Willy on Tue Apr 03, 2012 8:05 pm

I'm planning a Genie 12-150 install in my engine space. Challenge is the engine space is centered in my 48' center-cockpit sloop. Total exhaust run to transom is nearly 35 feet including loops, water-lift muffler, etc. Can the little Kubota push exhaust 35' with about a 3' total rise from muffler to exhaust outlet? If not, any recommendations?
Many thanks! Willy
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Re: Exhaust System Q - Genie 12-150

Postby Coulomb on Wed Apr 04, 2012 10:56 am

The limiting factor for any water lift muffler system is the volume of water in the exhaust hose that can run back into the water lift muffler. When the engine stops, if the water draining back fills the muffler then it runs back into the engine.

Back pressure on the engine, while a concern, is not generally a problem, however, you need to avoid up/down loops in the exhaust which aggravate the pressure issue. There should be one clean rise from the water lift muffler to the highest point in the exhaust, and from there a continuous downslope to the exit.
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