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  1. #1
    African-American
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    Lightbulb GP1300r Waterbox modding ???

    Lets talk about modding the GP1300r waterbox.

    I havnt found anything conclusive.

    My understanding: the GP1200r water box is the same as the GP1300r box except the 1300 has a square box welded onto the side.
    Am i correct in assuming i can have this removed and ill have a 1200r waterbox ?

    I know if the baffels break out/come loose u loose power, so we dont want to remove them.

    What are the results of shortening the waterbox, ?

    And am i correct in assuming the 1200 waterbox is better on a 1300 with free flow, however it does make more noise ? (good thing in my mind, lol)


  2. #2
    One day at a time..... N8R's Avatar
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    Quote Originally Posted by spaceman View Post
    Lets talk about modding the GP1300r waterbox.

    I havnt found anything conclusive.

    My understanding: the GP1200r water box is the same as the GP1300r box except the 1300 has a square box welded onto the side.
    Am i correct in assuming i can have this removed and ill have a 1200r waterbox ?

    I know if the baffels break out/come loose u loose power, so we dont want to remove them.

    What are the results of shortening the waterbox, ?

    And am i correct in assuming the 1200 waterbox is better on a 1300 with free flow, however it does make more noise ? (good thing in my mind, lol)
    Testing on my ported 1300 showed the following with the "Freeflow".
    1300 box was 1mph slower on top than the 1200 box and did not have as good of holeshot as the 1200 box..
    Then I tested a shortened 1200 box against the stock 1200 box. The shorty was 1/2mph slower on top than the stock 1200 , but had better holeshot than the stock 1200.. the stock 1200 box was a little louder than the 1300 box and the shorty was even a little bit more... just remember every ski will be different and best way is to try for yourself.

  3. #3
    mike1706's Avatar
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    very good testing guys and nice information, you think if i put a 1200 water box i will gain a 1mph my mods are ( free flow, 3 degree timing key, ride plate, r&d 800 grate, Efi well tuned, solas 14/20, gps at 72.3 and 1300 water box you think i will gain speed.

  4. #4
    Moderated
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    you will gain with a 1200 box , its the way to do it

    dont bother modding a 1300 box

  5. #5
    African-American
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    Still cheaper for me to mod it..

    To ship a 1200 box from usa is us$600+, excluding customs and the box itself.

  6. #6
    Mongoose's Avatar
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    Something was mentioned o me the other day, and I did not even think about it, but it makes sense.
    Apparently the 1200r box is better on the 03-04 1300 skis, but the newer 05 and on skis have a new design waterbox, that is not that different in performance to the 1200e one!
    Can somebody actually confirm or deny this with actual testing????

  7. #7
    Hydrotherapy's Avatar
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    the 1200 wb is better for all years...

    i gained rpm's on my 05 with a 1200 over a 03-04wb and a 05+wb with a free flow ...

    just my findings

  8. #8
    Mongoose's Avatar
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    Quote Originally Posted by Hydrotherapy View Post
    the 1200 wb is better for all years...

    i gained rpm's on my 05 with a 1200 over a 03-04wb and a 05+wb with a free flow ...

    just my findings
    That's good news then!
    Did you notice any holshot gains on the 05 Paul??

  9. #9
    African-American
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    Still cheaper for me to mod it..

    To ship a 1200 box from usa is us$600+, excluding customs and the box itself.

  10. #10
    Moderated
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    how the hell is that 600 usd to ship...thats just crazy, even by aussie standards.

    have you tried other freight companies?

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