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Thread: 1985 Honda atc 250r carb replacement

  1. #16
    Join Date
    Jul 2009
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    211
    this air stryker carb fit on the stock airbox?

  2. #17
    Join Date
    Jul 2014
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    Lloydminster, Alberta
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    503
    The air stryker will fit but some good stretching may be required, I had to stretch both my boots a lot to get the 39mm to fit
    Mixing gas and haulin' ass


    1984 ATC 70 x2
    1985 ATC 250R-Ported/Polished, PWK 39mm, V-force 3's, Outerwears air box lid, FMF fatty with DG silencer, DWT wheels, LSR +4 axle, all black plastics
    1985 ATC 250R-stock

  3. #18
    Onetrackmind's Avatar
    Onetrackmind is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    Yes, stretching of both boots is definitely required for the 38mm. Make sure that the carb and both boots are off the bike first. Heat and lube generously then apply some muscle. It will be frustrating, but they will go on eventually.

  4. #19
    barnett468 is offline FACT ! I have no edit button Arm chair racerThe day begins with 3WW
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    Quote Originally Posted by Fox250R View Post
    Not trying to highjack but what pilot do most of you 38mm a/s guys run with?
    I got a 70 in mine and it actually sounds close but I've never heard of any stock 250r using a 70 haha

    This thread is 2 years old. If you start a new thread you will get more replies.


    PREVIOUS KAWASAKI INTERNATIONAL R & D PROJECT ENGINEER AND ATV DEPARTMENT SUPERVISOR AND THE ONLY PERSON ON 3WW WITHOUT AN EDIT BUTTON OR A STAR

  5. #20
    barnett468 is offline FACT ! I have no edit button Arm chair racerThe day begins with 3WW
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    Quote Originally Posted by Fox250R View Post
    Ya I know, I was trying to be a little low key about it lol!
    That's pointless. If you want results then do things that will get them.



    Quote Originally Posted by Fox250R View Post
    Not too proud I ended up with a 70!
    I don't understand the correlation.


    Quote Originally Posted by Fox250R View Post
    Something is going on with it I think.
    Why?


    Quote Originally Posted by Fox250R View Post
    I got 162 main and it still sounds rich...
    Exactly what sound does it make that causes you t think that?

    Is it smoking excessively?

    Does it burble an blubber when yu open the throttle then eventually clean out and accelerate without burbling and blubbering etc?

    Have you put a new plug in and ridden it for a while then looked at the color.

    Have you done a high speed plug chop?

    What oil are you using?

    What ratio is it?

    What is the compression when kicking it over?

    What plug are you using?

    Do you need to choke it to start it?

    Does it start easily?


    PREVIOUS KAWASAKI INTERNATIONAL R & D PROJECT ENGINEER AND ATV DEPARTMENT SUPERVISOR AND THE ONLY PERSON ON 3WW WITHOUT AN EDIT BUTTON OR A STAR

  6. #21
    barnett468 is offline FACT ! I have no edit button Arm chair racerThe day begins with 3WW
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    Quote Originally Posted by Fox250R View Post
    Not trying to highjack but what pilot do most of you 38mm a/s guys run with?
    Do you mean an air striker carb?


    Quote Originally Posted by Fox250R View Post
    ...I've never heard of any stock 250r using a 70 haha
    Why are you using a grossly oversized carb on a stock bike?


    PREVIOUS KAWASAKI INTERNATIONAL R & D PROJECT ENGINEER AND ATV DEPARTMENT SUPERVISOR AND THE ONLY PERSON ON 3WW WITHOUT AN EDIT BUTTON OR A STAR

  7. #22
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    Quote Originally Posted by Fox250R View Post
    Ya I know, I was trying to be a little low key about it lol! Not too proud I ended up with a 70! Something is going on with it I think. I got 162 main and it still sounds rich...
    If you are jetting for the bike in your signature then I would start with a 50. At idle the throttle should be super crisp with the airscrew 1.5 turns out. If you have to turn the airscrew out more than 2 turns for a crisp throttle blip then lower your pilot to a 48. If you have to turn your air screw in less than one turn go up to a 52. Repeat this process until you are crisp at 1.5.
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