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  1. #1
    Site Admin Green Hulk's Avatar
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    If you have A 300 HP “maintenance free” Supercharger and it fails, what next?

    These superchargers are called “maintenance free” by Seadoo so Sea Doo doesn’t offer rebuild parts for them. Fortunately our friends at Rotax Racing provides a kit and that kit is available right here in the GreenHulk Store https://www.4-tecperformance.com/ind...oducts_id=6452

    PLEASE NOTE: if you choose to rebuild your supercharger the supercharger MUST be balanced after. I recommend either Glenn at Impros, or Art at Engine Tech to do this job.
    These superchargers spin at VERY high RPM compared to the older superchargers and MUST be balanced after rebuild.

    These superchargers fail in two ways.
    1) the clutch looses tension and simply slips. This can be corrected by tightening up the double nut system on the supercharger clutch end of the shaft. Ideally you want the clutch to slip at 16 ft lbs. you will need this gear holding tool to hold the gear while you measure slip using your torque wrench. I recommend an accurate dial type wrench.
    https://www.4-tecperformance.com/ind...oducts_id=4851

    2) the worst failure is a shaft bearing failure. This causes the impeller to grind to a halt in the supercharger housing completely destroying the supercharger. This is referred as a “blown up” supercharger. In this case the supercharger needs to be replaced. The GreenHulk Store offers new replacement superchargers at discounted prices
    https://www.4-tecperformance.com/ind...oducts_id=4995

    I hope this information was helpful!

    jerry Gaddis


  2. #2

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    Rotax kit wont work on the 230's cause theyre x-chargers with ground nuts. Totally different rotating parts.

  3. #3
    ncdoo's Avatar
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    What will they think of next, a maintenance kit for maintenance free supercharger...


  4. #4
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by ncdoo View Post
    ... maintenance free ...
    Maintenance free often just means it cannot be (easily) serviced or repaired

  5. #5
    ncdoo's Avatar
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    Maintenance free means no maintenance required in my book, unless its from Sea Doo... Or in this case, buy a new one when it breaks because we don't sell parts for it. I've seen and rebuilt X chargers that had balancing marks on the nut, never had a problem using a new nut and not having it balanced. I don't think a 300 charger spins any faster than a X charger?

  6. #6
    NitroFish300's Avatar
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    "PLEASE NOTE: if you choose to rebuild your supercharger the supercharger MUST be balanced after. I recommend either Glenn at Impros, or Art at Engine Tech to do this job.
    These superchargers spin at VERY high RPM compared to the older superchargers and MUST be balanced after rebuild."

    Could either of the shops install the XX charger, balance, and rebuild?

  7. #7
    Site Admin Green Hulk's Avatar
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    Originally Posted by ncdoo
    Maintenance free means no maintenance required in my book, unless its from Sea Doo... Or in this case, buy a new one when it breaks because we don't sell parts for it. I've seen and rebuilt X chargers that had balancing marks on the nut, never had a problem using a new nut and not having it balanced. I don't think a 300 charger spins any faster than a X charger?



    you do not have to balance the older 185/215/255/260 superchargers. You absolutely must balance the 300’s, they spin 8% faster than the older superchargers

  8. #8

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    After tightening the nuts to correct slipping do we need balancing?

  9. #9
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by Green Hulk View Post
    ...
    These superchargers spin at VERY high RPM compared to the older superchargers ...
    What is the difference in supercharger shaft RPM (versus engine RPM) between the prior version superchargers and these 'new design' superchargers?

  10. #10
    NitroFish300's Avatar
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    I have seen some reports of XX chargers having vibration at 7xxx rpm after installation

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