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  1. #1
    XDAILY's Avatar
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    Here is what Ive decided to do about this RXT SuperCharger washer issue (me newb)

    Click image for larger version. 

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ID:	243058I bought an 07 RXT with 180 hours on it knowing
    about the SC washer issue. Got it for 5500 with trailer. KBB listed it over 7.
    Its my first ski ever of any kind. had it for 1 month now.

    Ive been having a great time with the Ski and it runs flawlessly but Ive been worrying
    about the 100 hour recommended rebuild on the SC. Besides that it tops out at 60mph
    with the factory gauge (havent GPS'd yet) and that also is/was concerning.

    So this weekend I pulled the hose and checked how the SC impeller spins with the
    two fingers I could get on it reaching into the housing. I can just barely get it to spin
    using just about all Ive got.

    This put my mind a little more at ease and Im going to let it be till fall. Before next
    season though Im going to purchase and install this myself
    http://www.rivayamaha.com/RivaStore/...l Supercharger

    and these most likely (I called and at a minimum the tech guy said)
    http://www.rivayamaha.com/RivaStore/product_detail.asp?Product=Injector%20Kit,%20Pro-Series,%2042lb,%20SD%20RXP/RXT%20215[/URL]
    and be done with worrying about it probably for the rest of the time that I own it.

    Please comment Im here to learn.


  2. #2
    DaveC's Avatar
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    If your RPMs are where they are supposed to be and the SC impeller does not spin, I say you have been lucky. I would gladly miss 1-2 weeks of riding to get the ceramic washers out of that thing vs hoping for the best and that it will be OK.

    Leaving the ceramics in the supercharger is the best way to find out what the inside of your engine looks like.

    ETA- at 180 hours, the supercharger is well past the recommended rebuild.

  3. #3
    Mothman's Avatar
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    180 hours, wow. Roulette with one in the chamber... Pull it and change 'em quick!

  4. #4
    83Gator's Avatar
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    +1 from DaveC... at 180 hrs when you purchased it, you are now close to needing your 2nd rebuild on that SC. The best insurance you could have is to remove it, have it rebuilt and be done w/it. I know it's the middle of the riding season, but the alternative will make you sick. Also, my exp. was the factory gauge usually showed your top speed to be a little higher than what a GPS would. IE, if your speedo says 60MPH, then I'd bet a GPS would read 57-58. You should be turning no less than 64mph in stock form and in an ideal world 67 would be optimal.

    Of course, you may also be due a prop repitch and wear ring replacement if it's all OEM goods.

    Good luck w/your ski,

  5. #5
    DaveC's Avatar
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    When I purchased my '07 RXP new, I had seen the ceramic issues here. Before I ever took it out I pulled the SC and sent it to Jerry for the Riva washers.

    When Jerry returns from Scotland he can get you fixed up.

    http://www.greenhulk.net/forums/show...ebuild-Service

  6. #6
    Moderator Snoman's Avatar
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    Listen to Dave,hes right,get that SCer rebuilt ASAP!!!!!

  7. #7
    mikelytle1077's Avatar
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    you dont want to have to pull the engine and rebuild it right now trust me!! and these guys on the forum they now whats going on young grasshopper.
    i would rather pull 20 superchargers then to pull one engine and rebuild it.

  8. #8
    WBoulton's Avatar
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    I would at least pull the charger and see if it's got the upgraded washers in it. Theirs no way its the original charger on it. I'm sure it's been rebuilt once with 180hr. If you don't want any down time, let me know. I got a stock charger with upgraded washer I can sell you dirt cheap to run in the mean time.

  9. #9
    race24x's Avatar
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    60 MPH sounds like something is wrong with the SC already

  10. #10
    WBoulton's Avatar
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    Probably needs a wear ring an maybe a prop. If the charger was bad it would only go 45-50 a rev 6000.

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