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Thread: 1985 Honda 250r carburetor replacement options?

  1. #1
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    1985 Honda 250r carburetor replacement options?

    I have a keihin carb on my 250r and I've had no luck getting it to run properly even after a rebuild so I was wondering if there is a current replacement that is being sold for a stock engine with no mods?

  2. #2
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    38mm keihin airstriker.
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  3. #3
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    How much do they run?

  4. #4
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    Here are a couple links....

    Ebay: http://m.ebay.com/itm/331508413304?nav=SEARCH

    Eddie Sanders: http://www.eddie-sanders-racing.com/category_s/37.htm

    If you order from Eddie, you need to get the cable as well.
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  5. #5
    81k is offline At The Back Of The Pack Arm chair racerFirst time rider
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    When i had my '85 250r, I purchased a used 36mm flat slide on eBay that came off a newer model cr250. Obviously , you would probably have to do some jetting, to your particular engine, but that carb worked really well for me.
    YT 60
    '85 ATC 200X x2
    YF 60
    '02 400EX
    '85 YFM 200
    '99 Scrambler 400 4x4
    '85 350X

  6. #6
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    I've got a 39mm keihin air striker on mine and love it
    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

  7. #7
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    On a stock trike like yours, I would go with a 34mm PJ carb off a 1986 atc 250r or a 36mm PJ carb.

    That would eliminate your 34mm PE round slide carb.

    You can get them cheap since most guys don't run a stock trike and therefore want a 38mm/39mm carb.
    Email- onformula1@hotmail.com Rebuilt, Revalved, custom springs, lowering, forks & shocks, Custom Suspension, all brands, 2-3-4 wheeler's- PM or Email with questions.

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  8. #8
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    Quote Originally Posted by onformula1 View Post
    On a stock trike like yours, I would go with a 34mm PJ carb off a 1986 atc 250r or a 36mm PJ carb.

    That would eliminate your 34mm PE round slide carb.

    You can get them cheap since most guys don't run a stock trike and therefore want a 38mm/39mm carb.

    38/39MM runs fine on a stock bike, you just need to jet accordingly. Also, going with a 38/39 opens up the possibility for modifications down the road. My .02
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  9. #9
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    Those are good but do you have to use the stock thumb throttle?

  10. #10
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    Quote Originally Posted by hitmeup760 View Post
    Those are good but do you have to use the stock thumb throttle?
    No, if you use a twist you will need to order a special cable from either motion pro or terry cable. I prefer terry cable.
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  11. #11
    81k is offline At The Back Of The Pack Arm chair racerFirst time rider
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    The used CR carb i purchased on ebay came with the motorcycle twist throttle and cable, which i used on my 250r.
    YT 60
    '85 ATC 200X x2
    YF 60
    '02 400EX
    '85 YFM 200
    '99 Scrambler 400 4x4
    '85 350X

  12. #12
    Onetrackmind's Avatar
    Onetrackmind is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    I replied to you on my thread before I saw this one.

    I took the advice of the site veterans and went with the 38mm Keihin Airstriker. I just got back from 3 days of riding and it was flawless. My bike is bone-stock otherwise. I got mine from Eddie Sanders Racing in one day (severe time crunch) after giving up on another supplier. I had been waiting three weeks and no delivery in sight.

    I did have to stretch the air box tube and the insulator to fit (which produced a few F-bombs) but wasn't too bad. After that... just swapped out the cables and did a minor jetting change and was in business. Of course I had yaegerb on speed dial for that too.

  13. #13
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    Quote Originally Posted by yaegerb View Post
    38/39MM runs fine on a stock bike, you just need to jet accordingly. Also, going with a 38/39 opens up the possibility for modifications down the road. My .02
    Yes, they work and I have done it many times, but this- 34mm PJ carb off a 1986 atc 250r or a 36mm PJ carb= free to close to free plus there are many mods I would spend that money on before a carb. if you are looking for more performance.
    Email- onformula1@hotmail.com Rebuilt, Revalved, custom springs, lowering, forks & shocks, Custom Suspension, all brands, 2-3-4 wheeler's- PM or Email with questions.

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    As always- Everything I post is IMHO.

  14. #14
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    The problem wasn't the power or performance of the engine, when sitting it idles and throttles great but when I'm moving it wants to bogg out like it's running out of gas and on some spots it just hits or lines up right and goes full throttle and hot dam can you feel the power, I've tried every piece of advice given to me on this except changing it out so this is probably going to be the last step before I do all the maintenance for the year. Thanks everyone for all the advice as its very appreciated.

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