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Thread: 1984 200x cam swap

  1. #1
    Join Date
    Jul 2018
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    1984 200x cam swap

    I just got a 200x and was wondering about a cam swap to wake up the motor slightly. I've read quite a few different cam choices that work well. My question is about the actual swap. Can this be performed without removing the motor? I'm new to these machines so I beg you pardon if this is a silly question. Don't seem to be finding anything when I search.
    Thanks!
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    '84 Honda 200x ATC
    '84 Honda 200m ATC
    '85 Honda 200s ATC
    '85 Honda 125m ATC

  2. #2
    Join Date
    Mar 2010
    Location
    Slidell, LA
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    4,737
    Yes, you can remove the rocker cover for the cam swap while in the frame. I would get the Webcamshafts 389a with upgraded springs and retainers.
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  3. #3
    Join Date
    Jul 2018
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    St. Clair Shores, MI Grayling, MI
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    Quote Originally Posted by yaegerb View Post
    Yes, you can remove the rocker cover for the cam swap while in the frame. I would get the Webcamshafts 389a with upgraded springs and retainers.
    Thank you. Appreciate the response. What kind of response does the 389a cam give?

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    '84 Honda 200x ATC
    '84 Honda 200m ATC
    '85 Honda 200s ATC
    '85 Honda 125m ATC

  4. #4
    Join Date
    Mar 2010
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    Slidell, LA
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    Mid to upper response.
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  5. #5
    Join Date
    Jul 2018
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    St. Clair Shores, MI Grayling, MI
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    Quote Originally Posted by yaegerb View Post
    Mid to upper response.
    Sounds good, thanks!

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    '84 Honda 200x ATC
    '84 Honda 200m ATC
    '85 Honda 200s ATC
    '85 Honda 125m ATC

  6. #6
    Leevvii's Avatar
    Leevvii is offline At The Back Of The Pack Arm chair racerFirst time rider
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    Mar 2016
    Location
    Australia
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    216
    Some XR 200 cams will fit the 200x, I think they improve midrange, probably not as sporty as the 389a cam, but still an option
    n

  7. #7
    Join Date
    Jul 2009
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    If your going with a cam that requires heavy duty springs then yes you will need to remove the motor . The cylinder head will not come off without removing the motor .
    If your going with a cam that doesn’t require HD springs then all you need to do is pull the pulser/ CDI cover and the cam will come out , get a manual for the steps on how to .
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  8. #8
    Join Date
    Jul 2018
    Location
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    Quote Originally Posted by shortline10 View Post
    If your going with a cam that requires heavy duty springs then yes you will need to remove the motor . The cylinder head will not come off without removing the motor .
    If your going with a cam that doesn’t require HD springs then all you need to do is pull the pulser/ CDI cover and the cam will come out , get a manual for the steps on how to .
    Thanks. Sounds like I'm gonna wait and rebuild the entire motor when the time comes. Appreciate the input!

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    '84 Honda 200x ATC
    '84 Honda 200m ATC
    '85 Honda 200s ATC
    '85 Honda 125m ATC

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