Porta-Pottie back to head
Jeff, Oddly enough, I am doing the same thing with my 27!!!!!I made a dummy model out of cardboard of a holding tank that I thought would fit in the space available for it and kept changing the size until I believe the actual tank will fit. I am down to a l5 gallon holding tank and am planning to fit it under the right side bunk; that is where the fresh water inlet is to supply water to the head and also the discharge. The tank fits between those two valves. Then I plan to use a pump between a Y valve and the discharge--the Y valve will allow the suction removal of the tank contents at the dock. So, a l5 gallon tank, a Y valve, a pump, an on-deck fitting and several feet of l l/2 inch hose and double clamps on the hoses. Those are my plans at the moment--subject to change, of course. Joe My 27 is a 1980--your inlet and discharge valves may not be in the same place??