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Thread: zxr 400 carbys on a 250?

  1. #1
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    3rd October 2006 - 23:51
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    1985 yamaha xj900
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    zxr 400 carbys on a 250?

    Quote Originally Posted by freakazoid3 View Post
    my zxr is slightly upgraded, with a k&n filter and rejetting and racing exhaust, i also changed the sprockets to my drivingstyle.(i only weigh about 70 kg so a larger front sprocket was called for.
    after testing now(which i still havent done) i am going to try to fit zxr400 carbs.
    because they are VHM 32 mm mikunis in staid of 30mm mikunis, the jets are more or less the same, so i will try them and hopefully suceed with maybe a little rejetting.
    can these carbys be fitted on a zxr250c. would it need a different pipe aswell.

    are there any other mods that can be done to these bikes??

    ryan

  2. #2
    Join Date
    3rd June 2005 - 15:20
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    81 katana 650 fighter.
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    leave it stock mate...do an exhaust system maybe, but in reality your not going to get that much extra grunt out of it and it will cost you a bucketload

    best modification i can suggest is track down some clutch plates from a tzr250 3ma reverse cylinder

    makes them do bloodey good clutch wheelies....

    i discovered this after roasting my stock clutch doing a 3rd gear burnout ..... hehe whoopsie

  3. #3
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    3rd June 2005 - 15:20
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    just been told from someboyd in the know (n4cr)

    that they will work if jetted correctly he had it done to his zxr250c also.

  4. #4
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    3rd October 2006 - 23:51
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    if zxr 400 carbies are fitted will it make it any better? and do you know anybody who has these clutch plates?? where did you get yours from?
    cheers ryan

  5. #5
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    3rd June 2005 - 15:20
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    yeah pulled away from my zxr250c out of corners made it go like mad, ummm i got my clutch plates from an old spare tzr motor i used to have in the garage when i had one.

    i spose some nice new zxr ones would be just as good i just happened to discover they fitted so i put them in...

    if you want it to grip better....do one steel plate one fibre one steel one fibre and so on....don't have like one steel 2 fibres.....

    you want to get as many fibres as you can in there...but you must have a steel plate inbetween the fibre ones.

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