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  1. #1

    Join Date
    Mar 2006
    Center of the Universe

    Riva 1300R Ride Plate on a 1200R/Does is matter?

    For background purposes, My pump shoe has been plugged, leveled and re-installed in the hull. It sits 1/32 inches higher than when I took it out, and I got better hook-up by doing this modification.

    I had an old Riva 1200R ride plate, extremely beat on, with big dents on the tail and fracture cracks on the bottom of it--time to upgrade. I bought a Riva 1300R ride plate and went to install it, and it sits 1/4 higher up in the boat than the pump shoe. Should I washer the front and back of the ride plate until they are level with the pump shoe, or should I bolt it in as is and go from there? The old plate sat about 1/16th higher than the pump shoe and I ran 70 mph with it but I thought it might be the cause for porpoising between 30-45 mph.

    Oh, other problem is I use a 3 degree exit. Already grinded the bottom of pump flat and a groove in the end of the ride plate so the bolt in the bottom of the ride plate has clearance.

  2. #2
    mrbtd's Avatar
    Join Date
    Jul 2005
    Lindenhurst, Illinois, United States
    By dropping the front of the plate you are creating more angle. Just dont drop it below the pump shoe (dont want water grabbing it).

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