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Exhaust pipes for 3HP Dispro

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Paul Carns
Posted on Sunday, September 28, 2003 - 05:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

The non-original 3HP Dispro Engine in the 18ft Mullins Launch I just purchased needs a new exhaust system. The original "Maxim Silencer" from the Dispro Engine is rusted out. I need about 5 feet of pipe to reach from the threaded female output to the aft port. I need to know what is the best pipe to use (copper, brass, steel?) to run the distance. Also, I need to know where to place the water port into the exhaust? I have read that it should be 4 inches below the exhaust outlet from the engine...is this right?...do I need to put in an elbow or trap?...etc.
Thanks! I am just getting started on this projecta and am totally a rookie!

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