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Thread: 125 top end on a 90 bottom

  1. #1
    briano is offline Got The Holeshot Arm chair racerJust too addicted
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    125 top end on a 90 bottom

    I just bought a 77 atc 90 and it smokes like crazy, I have been looking at rebuilding it but my buddy has an 85 125m with a bad tranny. Can I just bolt on the 125 top end to my 90 lower? any help would be great.

  2. #2
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    Nope it wont work 2 completely different motors .
    78 atc 90/180cc Dickson Full Suspension
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  3. #3
    briano is offline Got The Holeshot Arm chair racerJust too addicted
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    That's what I kinda thought, but you never know.

  4. #4
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    This person grafted a 125m motor on CT90 bottom end. The ATC 90 and the CT90 (Other than the the kicker) motors are similar engines.


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