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Help ZXR 250 Street Fighter

Discussion in 'Kawasaki 250cc In-line 4's' started by masterofoldskool, Dec 30, 2022.

  1. masterofoldskool

    masterofoldskool Active Member Premium Member

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    Hey Team, looking for some help with the running of my ZXR 250 Street Fighter Project. We bought this project as a non runner. The cam chain tensioner had collapsed so we opted to buy another engine just incase there has been cam chain issues. Unfortunately the second engine arrived with its own issues. We've successfully mated the two engines and cherry picked the good bits. We've also cleaned and rebuilt the carbs with new o rings gaskets etc. But we're still having running issues. It rides well however It's reluctant to tick over under 2000rpm and doesn't want to start when warmed up. Any ideas?


    IMG_20221230_221621_654.jpg
     
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    masterofoldskool, Dec 30, 2022
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  2. Frankster

    Frankster Grey Pride...Adventure before Dementia Staff Member Premium Member Ride and Events Crew

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    Did you check the valve clearances when you mated the engines? Carb balancing never goes astray either.
     
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    Frankster, Dec 31, 2022
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  3. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

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    +1 for carb balancing, especially if you've disassembled and cleaned them
    +1 for valve clearances
    Also, If it won't idle you're dealing with the idle circuit.
    It's the smallest jets and have you adjusted the idle mixture screws?
     
    ruckusman, Dec 31, 2022
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  4. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Hi A?,
    Is that you who bought a set of airbox seals and is having issues fitting them? If so you can ask the good people on this forum if they fit and how they fit. No need to take my word for it.
    Cheers
    Blair
     
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    maelstrom, Dec 31, 2022
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  5. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    A thousand apologies. The factory made our last batch from old tooling which was supposed to have been destroyed. Have sent you an email.
     
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    maelstrom, Dec 31, 2022
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  6. masterofoldskool

    masterofoldskool Active Member Premium Member

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    Yes we did
    The valve clearances were done, but yes the balancing could probably do with looking at.
     
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    masterofoldskool, Jan 1, 2023
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