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  1. #1

    Join Date
    Jun 2015

    Unsolved Cavitation Problem

    After my friend was using my gtx, and thought they sucked something up, we have had major cavitation problems. We got the small piece out, but it still has cavitation, and the top speed is about 12 mph less. I took the jet pump off, and the impeller seems fine. I can't tell if the wear ring needs to be replaced. When spinning the impeller around, the black rubber ring in the pictures seems to rub a little. If anyone has any advice on where to go from here that would be great.

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  2. #2

    Join Date
    Jun 2015
    Troy Montana
    I had the same issue not long ago and redid the liner in mine and everything is back to normal. Looking at your pictures yours liner is wore out. When i installed a new one in mine the prop was just skimming the surface of the liner. there pretty inexpensive.Also mine had a seal (neoprene) between the the boat and pump be sure and replace that.

  3. #3
    ptscon's Avatar
    Join Date
    Jul 2013
    Your wear ring is goooone by a long margin. The clearance between impeller and wear ring should be a fraction of a mm, I'm guessing yours has 2-3mm, replace.

    Edit, also the wear uneven or is it just me?
    Last edited by ptscon; 08-14-2015 at 01:32 PM. Reason: Also..

  4. #4

    Join Date
    Apr 2006
    panama city beach 'fl
    would say wear ring BUT had one come in other day drove us nut ,anything above center trim up holeshot fine, trim down sit there and spin prop after all checks got under ski felt at ride shoe and part of ramp gone

  5. #5
    ride it like you stole it!!! raceneked's Avatar
    Join Date
    Sep 2011
    Lake Havasu, AZ
    exactly what happened to my GTR - ramp broke off. and your WR is toast.

    (how you doin' Chip? ...good, I hope.)

  6. #6
    Tiny's Avatar
    Join Date
    Sep 2006
    The Atl
    thats a 2 stroke pump. Make sure you remove the retaining screw on the top and bottom of the pump before trying to remove the wear ring....

  7. #7
    flash 800's Avatar
    Join Date
    Jun 2009
    north bay ontario, canada
    wear ring is toast. that's a huge gap right there.

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