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Thread: Interchangable CDI units

  1. 05-09-2009, 10:01 AM #1
    jjwest
    jjwest is offline New to the board Arm chair racerNew to the board
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    Interchangable CDI units

    If the plugs are the same, are CDI units interchangeable? I have an 87 250es and there are lots of CDI units on ebay that look the exact same as mine but they are for different models. Some are a lot cheaper than others so I was wondering if they were interchangeable.
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  2. 05-09-2009, 11:22 AM #2
    Yamaha_Rules69's Avatar
    Yamaha_Rules69
    Yamaha_Rules69 is offline Power User Roostin Away
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    Check out bike bandit.com and see if the part numbers match up. They may look identical, but that dosnt always mean it is the same. The spark plug has nothing to do with what CDI is what. I would start there.
    ---------- Jon.
    THE 80's RAGE! Currently owns:
    81, 85 Yamaha Tri Moto 125
    83 Yamaha Tri Moto 200 x2
    82,83 Yamaha Tri Moto 175 project
    85 Yamaha Tri Z 250
    84 Kawasaki Tecate 250
    84 Honda ATC 70
    85 Honda ATC 350X
    84 Honda ATC 250R
    (2) 84 Honda ATC 200x
    82, 83 Honda ATC 185s
    81 ATC 200
    Lots of other parts and bikes
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  3. 05-09-2009, 12:31 PM #3
    jjwest
    jjwest is offline New to the board Arm chair racerNew to the board
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    I'm sorry my post was not very clear. The plugs I was referring to were the plugs on the CDI itself. Thanks for the advice.
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  4. 05-09-2009, 01:14 PM #4
    Erics350x's Avatar
    Erics350x
    Erics350x is offline Power User Got the holeshot
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    not too many interchange with the 250
    The person who says it cannot be done should not interrupt the person who is doing it.


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  5. 05-13-2009, 12:04 PM #5
    leokendall
    leokendall is offline At The Back Of The Pack Arm chair racerFirst time rider
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    a few days ago i took a cdi of a yamaha tri-moto 125 and got it to work for a honda 82 honda 200. dunno what i did just played with the wires and works perfect.
    1984 Honda Big Red
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  6. 05-13-2009, 01:05 PM #6
    atc500x
    atc500x is offline Got The Holeshot Arm chair racerJust too addicted
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    atc250es,atc250sx and trx250 will fit,I have also 3 250es cdi for sale...

    1986 ATC500X
    1985 ATC250SX
    1985 ATC200X
    1985 ATC250R
    1986 ATC250R
    1984 ATC250R
    1981 ATC70
    1984 ATC70
    1985 ATC70
    Custom built ATC70 / 250R laydwon swap
    1986 ATC250SX FATCAT
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  7. 05-13-2009, 10:53 PM #7
    jjwest
    jjwest is offline New to the board Arm chair racerNew to the board
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    How much do you want for one?
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  8. 05-13-2009, 11:08 PM #8
    atc500x
    atc500x is offline Got The Holeshot Arm chair racerJust too addicted
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    35$ shipped in the USA

    1986 ATC500X
    1985 ATC250SX
    1985 ATC200X
    1985 ATC250R
    1986 ATC250R
    1984 ATC250R
    1981 ATC70
    1984 ATC70
    1985 ATC70
    Custom built ATC70 / 250R laydwon swap
    1986 ATC250SX FATCAT
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