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  1. #1

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    GP1200R / GP800r Cylinder swap

    Can you use a 1200r cylinder / barrell on a 800r engine?


  2. #2
    powerstroke specialist mikegp's Avatar
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    yes you can . i have done it few times.

  3. #3
    xxx2's Avatar
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    Port timing is different

  4. #4
    800 cylinder makes more power. The 1200 guys use to put the 800 cylinders on the 1200 motor. Stick with what you have!

  5. #5
    powerstroke specialist mikegp's Avatar
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    Quote Originally Posted by xxx2 View Post
    Port timing is different
    it does not matter ,have you seen them side by side? the difference is minimal , have done it and never had any issues.
    in fact i have a 98 gp that has a 1200 cylinder on his third summer season now , still solid . sold a xl long time ago with a number one cylinder replace with a 800 , still running.
    so yes i will doit any day.

  6. #6
    powerstroke specialist mikegp's Avatar
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    Quote Originally Posted by scittb View Post
    800 cylinder makes more power. The 1200 guys use to put the 800 cylinders on the 1200 motor. Stick with what you have!
    lol it looks like he does not have a 800 jug , summer is here stick that bastard in there and go have fun!!!
    at last i will.

  7. #7
    xxx2's Avatar
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    I never never said it won't work, I have replaced just one 1200 cylinder with a 800 in the past for customers/skiis I've sold without any ill results, I simply stated the port timing is more aggressive on the 800cyl... enough where you notice a difference, not really. I have measured the ports and duration a while back and it is different

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