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  1. J

    Porpoising? What causes and how to fix

    Put new props on the boat, same size, just not bent or chipped, took her out yesterday and now she porpoises like a wild horse. Tried trimming up and down with minimal help. WOT kept her flat but it was too rough to go that fast and if took her to half plane, no problem there either. Would...
  2. J

    Twin engines but not counter rotating

    I have twin Mercury 90 on a 21 ft center console with both engines spinning the same direction. Is it possible to change one to counter rotating? What are the pros and cons? Can i change one prop and run that engine in reverse? Crazy...
  3. J

    Bunks do not support transom since I replaced them last week.

    I replaced Bunks last week. They are 3" X 8" X8' set on edge, supporting a 21' SeaFox center console. The bunks are long enough, sticking beyond the transom by about 4 - 6" but the rocker of the hull has the bottom edge of the transom about 2" above the bunk! I have twin 90 Mercs hanging off...
  4. J

    twin engine/two battery system

    First time on this forum posting a question...really enjoy all the advice I have recieved just by reading but haven't seen this one yet. I have twin 90 merc outboards and have a two battery system with two Perko battery switches. Could someone show how this system is supposed to be connected...
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