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Thread: 200S engine mod??

  1. 05-21-2018, 07:02 PM #1
    AbusedBigRed
    AbusedBigRed is offline New to the board Arm chair racerNew to the board
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    200S engine mod??

    Hello im looking for an HP gain for my 200S, thinking about a xr 200 cam and carb , wich year should I look for? Or is there any better mod?
    Thanks!
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  2. 05-22-2018, 07:33 PM #2
    YTZ drew
    YTZ drew is offline Got The Holeshot Arm chair racerJust too addicted
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    Any year of the 2 valve xr200 can donate the carb and can, but get the intake manifold too. The bigger carb doesn't fit the atc intake correctly.
    1985 Tri-Z 250
    1985 ATC250R
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  3. 05-23-2018, 11:49 AM #3
    ironchop's Avatar
    ironchop
    ironchop is offline Power User The day begins with 3WW
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    You can also use aftermarket cams from Web Camshaft or Megacycles that are manufactured for the 83-85 ATC200X in that 200S

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  4. 05-23-2018, 06:59 PM #4
    125Mmadness's Avatar
    125Mmadness
    125Mmadness is offline At The Back Of The Pack Arm chair racerFirst time rider
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    If your going to do the carb and cam you might as well throw in a high comp piston like from a 200x or xr200
    1985 ATC125M: Parts
    1985 ATC200S: 84 200S Bottem end, 200x Head, 200x Carb, S&S Cycle Exhaust, Wiseco 10.25:1 Piston, Reground Cam with About 1mm more lift(unknown specs).
    1988 TRX250X
    1983 ATC200E: Total Pile.


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