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Old 05-30-2008, 12:15 PM
dcobbett dcobbett is offline
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Join Date: Nov 2004
Location: Swampscott, MA
Posts: 299
Default Re: Thru transom scuppers conversion from thru flo

I converted the through the bottom scuppers to through the transom scuppers when I put a new transom in my 1976 20 SF. I used short stubs of sink drain PVC from HD that fit into the lip on the back side of the rubber gasket for the PP ball cage. Inside the hull, I modified a fitting from Marine East http://www.marineeast.com/a_sch/sch_...d=05&pid=05_03
which was available in my area from West Marine, then joined the two fittings together with flexible hose rated for below the waterline use. Works great, but there was a lot of careful measuring and hole alignment work, a lot of added blocking behind and under the area of the through hull fitting, plus lots of cutting, filing and shaping of the fitting itself.

BTW, xing or criss crossing scupper drain lines has been around for a long time and I believe it started in sail boats to drain the lee side of the cockpit which would be at or below the actual water line when the hull was healed.

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