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  1. #1

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    impeller duct problem

    The fins on my impeller duct look like they are deteriorating. Each fin has a spot about the size of a dime that looks like it's slowly being "eaten" away. If you were to look through the nozzle from the back of the ski, the area of each spot is on the front side of each fin facing the nose of the craft. Can cavitation cause this to happen? The ski is a 2007 FXHO.


  2. #2
    It's not the destination, it's the journey!! Rip'nTear SHO's Avatar
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    Pics? Would help to see whats going on.....

  3. #3
    zx11rider's Avatar
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    Quote Originally Posted by czoltak View Post
    The fins on my impeller duct look like they are deteriorating. Each fin has a spot about the size of a dime that looks like it's slowly being "eaten" away. If you were to look through the nozzle from the back of the ski, the area of each spot is on the front side of each fin facing the nose of the craft. Can cavitation cause this to happen? The ski is a 2007 FXHO.
    yep cavitation is not good the new 4-strokes eat up the pumps with that power.

  4. #4
    NWDayton's Avatar
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    Yep. Cavitation. Take a good look at your impeller for any nicks and scratches. Give Impros a call if you need more help with this. email - [email protected] Dave can help you with all pump and impeller issues.

    The Cap´n

  5. #5
    hitman's Avatar
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    Does it look anything like this?
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  6. #6

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    Quote Originally Posted by hitman View Post
    Does it look anything like this?

  7. #7
    Gus13letter's Avatar
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    Quote Originally Posted by hitman View Post
    Does it look anything like this?
    That sucks. I dont think that is a cavitation burn though. In your first pic you can see where the blade hit that fin (line in pump) knocking out the section of pump. The pitch of the impeler seems it was pitched too tall.

    The SeaDoos have similar problem with cavitation burns especially with the SS liners. Try to reduce cavitation by properly pitched prop or maybe the anticavitation cones. These skis produce so much power when modded it is tough to get rid of all cavitation.

  8. #8
    philip_gpr's Avatar
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    same issue

    mine are the size of quarters

    the E1 wheel makes tooooo much HP !

  9. #9
    Addicted Member 5001craig's Avatar
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    Quote Originally Posted by SHOdude View Post
    +1

    Bet the Skat stainless stator would cure this problem for several reasons.

    Wish I had unlimited funds...

  10. #10
    hitman's Avatar
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    Quote Originally Posted by Gus13letter View Post
    That sucks. I dont think that is a cavitation burn though. In your first pic you can see where the blade hit that fin (line in pump) knocking out the section of pump. The pitch of the impeler seems it was pitched too tall.

    The SeaDoos have similar problem with cavitation burns especially with the SS liners. Try to reduce cavitation by properly pitched prop or maybe the anticavitation cones. These skis produce so much power when modded it is tough to get rid of all cavitation.
    That is not my pump. That was Dan Okeef's pump after less than 40 hours of E1 abuse, and his prop was not hitting the vanes. It's purely from cavitation.

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