I recently got an OMC 22 with a Bayer tower & an A-B lower. As I got it, it was made to be force fed by a propwash pickup. I want [at least for now] to use the pump, my question is.. The tower is about H height, the rear tube is about 5/8 ID, the water tube in an H tower being about 5/16, would it be too much of a water column for the water pump to maintain ? I know rear port cooled OMCs are backwards of normal and checked to be sure theres no thermostat. I also found a little sealant blob in it. I wanted to ask about whether I need a tube inside the tube so to speak before starting it again.
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