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Thread: Water box help

  1. #1
    Duke's Avatar
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    Water box help

    Need some help on what to do with my freinds RXP.

    The baffles on his waterbox came loose so he needs to know all his options. It is close to stock with only a few mods getting him to around 72. Should we just gut this one or trade it to someone, sending to mod, for a stock one?

    If there is power to be gained by modified, how much?

    Is this a common occurrence?

    Does anyone have one cheap?

    Your input would be great.

    Thanks,
    Duke


  2. #2

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    Just remove the loos baffles totally. If he wants a Rotax waterbox I might have onbe for sale soon.

  3. #3
    Duke's Avatar
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    Quote Originally Posted by lvnspeed View Post
    Just remove the loos baffles totally. If he wants a Rotax waterbox I might have onbe for sale soon.
    How many, if any, rpms would I expect to lose?

  4. #4
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by Duke View Post
    How many, if any, rpms would I expect to lose?
    NONE! the info floating around that modded waterboxes or Rotax Racing waterboxes cause a loss of RPM is bad info based on skewed test results.

  5. #5
    Duke's Avatar
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    Quote Originally Posted by Green Hulk View Post
    NONE! the info floating around that modded waterboxes or Rotax Racing waterboxes cause a loss of RPM is bad info based on skewed test results.
    Thanks Jerry and Scott!

    Should we consider cutting it shorter while we are there or just leave the length alone? Are there any benefits to this other then more room?

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    Quote Originally Posted by Duke View Post
    Thanks Jerry and Scott!

    Should we consider cutting it shorter while we are there or just leave the length alone? Are there any benefits to this other then more room?
    shorten it up...

  7. #7
    Site Admin Green Hulk's Avatar
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    I concur!

  8. #8
    Duke's Avatar
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    How much and where do you take the length from? Middle?

    Thanks.

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    Site Admin Green Hulk's Avatar
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  10. #10
    Been there and back! BDNJ's Avatar
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    Definitely shorten it up. I ran one once w/out the baffles and lost all vaccuum. The waterbox couldn't push out the water at the very bottom of the box. The water then boiled and cracked the waterbox. You need to cut it down by about 40% imo. Look up the RR waterbox dimensions and try to get close to those measurements.


    Brendan

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