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  1. #1

    Question ROTAX New 137 Superchager ??

    HI all

    1st i would like to thank you all, its really nice to have this website where you can grab any kind of info you want

    2nd i would like to know any information regarding the New Rotax 137 charger?
    i looked around but there is no hard info about this Supercharger ??
    has anyone installed it here ?
    if yes can you please share your finding about it ??

    i am installing it soon just want to know what i am getting ?


    Thanks


  2. #2
    danieletrono's Avatar
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    It is a very good 137 upgrade. Light, more wheels in the impeller, well machined. It should be likeor more an et 137. It is wheel and spacer or case!!! Let us know what do you think on it after install!!

  3. #3
    Sure will let you know. hopefully i receive the parts soon.

  4. #4
    ROTAX RACING performance
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    you cant install that SC on your RXT RS 260, the boost limiter of the ECU , will kill the power directly , you need to get the right ECU and fuel setup , as the stock Injectors can not supply enough fuel for that SC or any other 14 + psi SC

  5. #5
    danieletrono's Avatar
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    Which is the right ecu and fuel? A reflash? But if i reflash inj are not good ? If i reflash to 8500 with that 137 upgrade, boost will be 14 +, so notgood stock inj?

  6. #6
    eric1238's Avatar
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    Stock injectors should be fine with a RRFPR

  7. #7
    danieletrono's Avatar
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    Eric which ia your best speed? Which rpm with nico reflash?

  8. #8
    eric1238's Avatar
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    Right now 74.5 mph but I am hitting the rev limiter. I also weigh in on the heavy side. Weather is still very cool here and I had the prop pitched based on my warm weather RPMS from last summer. My limiter is set to 8450. I had the ECU reprogrammed at 7 hours and now have 33 hours with 0 issues. I am hoping to have an adjustable venturi soon and then I can back it off of the limiter. From around 20, the ski gets to the limiter very quick with the SpeedFreeks prop when you pin the throttle.

  9. #9
    danieletrono's Avatar
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    Thabk you very much. No retainer?

  10. #10
    eric1238's Avatar
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    Yes, I have the Riva Titanium Retainers.

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