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Thread: ZXI CDI

  1. #1

    ZXI CDI

    I have a ZXI that was changed from a 1100 to a 900 at some point.
    I bought it needing a top end rebuild. I want to make sure I have everything sorted out when it's time to run it again.

    The previous owner said he never changed the CDI when he did the swap but it worked fine for years.

    I found a couple posts that said the 900 and 1100 CDI's were different. Can anyone confirm this? Would running the wrong box cause engine failure?


  2. #2
    DavidR's Avatar
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    You didn't state what year model you are working on, but I looked up and compared 1996 900/1100 and the igniters are different by one digit. 21119-3744 vs 21119-3745. If I had to guess I would say it's the timing curve that's different. Would it make much of a difference? The factory engineers thought so. Look for the correct one on eBay and switch yours out.

  3. #3
    The hull is a 97 zxi1100 but the engine was swapped for a 98 900 at some point.
    21119-3747 was used on the 97 and 98 900's. I assume it is what I need.

    I do have the CDI for the 1100 in it now, previous owner said it ran fine for years.
    However the #1 cylinder whas scorn.

  4. #4
    DavidR's Avatar
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    I don't think the ignition could cause cylinder scoring, unless you see signs of detonation on the piston crown.

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