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  1. #1
    ptscon's Avatar
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    Question Is my impeller in bad shape?

    I changed the wear ring on my RXP but I think I'm still cavitating at launch and top speed maxes out at 63 GPS with 8140 RPM.



  2. #2
    boost junkie skidoochris's Avatar
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    I would not run it
    time for a nice SS one

  3. #3

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    Prop looks like it could be cleaned up with a file pretty easily or sent off for cleanup, pitch and balance if you don't want to buy new. Your wear ring looks grooved up pretty bad and I can see space between the wear ring and the prop...maybe it's the angle the photo. Have you check the radial play of the shaft? When was the last time the pump was rebuilt?

  4. #4
    ptscon's Avatar
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    I already changed the wear ring hoping it would fix cavitation, old photo before the change.

    Not sure if t little chips on the edges would cause the cavitating and 4 mph from top end.

    Does that look like a stock impeller or aftermarket?

  5. #5
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    The small nicks would not cause the cavitation, and it's hard to tell but it looks stock. Pull it and look for numbers that will tel you if it's stock or not. While you have it off, clean up the edges.

  6. #6
    ptscon's Avatar
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    Quote Originally Posted by ncdoo View Post
    The small nicks would not cause the cavitation, and it's hard to tell but it looks stock. Pull it and look for numbers that will tel you if it's stock or not. While you have it off, clean up the edges.
    Will give it a try, any way to avoid buying impeller removal tool?

    Maybe previous owner put on a wrong pitch impeller at one point, I'm definitely loosing 4-5 mph from the top end and bouncing off the limiter.

  7. #7
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    No you'll need the tool.

  8. #8
    Gotta change them both.

  9. #9

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    Mine looks worse! I filed it down as I was in a pinch and wanted to get out on the water. Still did 70 gps with a stock 215.

    You're most likely getting cavitation because of your wear ring. I would replace both.

  10. #10
    Water4fire's Avatar
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    We cant see what the trailing edges look like. I have repaired ski's that were all over the limiter and would only run 62ish and it was they passed some rocks through the pump and it bent the trailing edge and this inturn screws your speed and RPMS up.
    I would pull it all and inspect everything again. Also look at your according boot and carbon ring. You can get cavitation from air seeping through.

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