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Yoshimura carburetor sizing for takegawa 4v

This is a discussion on Yoshimura carburetor sizing for takegawa 4v within the Z50, CT70 and JDM Monkeybikes forums, part of the General Talk category; Actually the TM-MJN 24 Kit was $45 cheaper! Figure that out. But still what jet should I get for it? Do you know the stock ...

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Thread: Yoshimura carburetor sizing for takegawa 4v

  1. #31
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    Actually the TM-MJN 24 Kit was $45 cheaper! Figure that out. But still what jet should I get for it? Do you know the stock jet and pilot?
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    Give me 10 minutes and ill check sizes. It was $334.56 through Amazon with exoedited shipping from Japan, with manifold.

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    The 24mm has:
    MJ 90
    PJ 25
    Im of the belief that traditional jetting specs are different with the TM series because of the hollow needle?
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  5. #34
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    Quote Originally Posted by spiz5 View Post
    The 24mm has:
    MJ 90
    PJ 25
    Im of the belief that traditional jetting specs are different with the TM series because of the hollow needle?
    Thank you! I have read that too. Never had one so I'm a bit cautious in buying it. Why fix what ain't broke, ya know?

    TM-MJN - Main Jet 95
    Pilot 15
    Last edited by RAZZO; 03-23-2016 at 03:26 PM.
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    Quote Originally Posted by spiz5 View Post
    The 24mm has:
    MJ 90
    PJ 25
    Im of the belief that traditional jetting specs are different with the TM series because of the hollow needle?
    Also look in the documents with the carb, tm-mjn24 for yoshi head kit using a bmc filter, size 85 main and using a K&N filter 80 main. (mikuni jet type N100-604)

    (Yosh also sells a jet kit 80-82.5-85-87.5, I just got one in last week. 731-01008087)

    I am waiting for the weather getting better, I am going to put the yoshi kit(Y full88 + 24) into the sleeper. I hope my crank mount 3plate clutch will survive this.
    Last edited by nielspbr; 03-04-2016 at 12:21 PM.

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    My mjn-tm22 kit came with a 130 main and 15 pilot.

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    Getting close to getting my first run with this carb. This morning I spent 2 hours modding a throttle cable to work with the oem throttle and fit into the TM-MJN cap. Came out great with no goofy connections, but way more time than anyone should ever spend on a cable.
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    Just as an FYI I once had a MJN-26 on my Honda Nice 142cc+r with a 54mm taky top end and 62mm stroke. The jetting once dialed in was 25/145

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    The 90/25 combo is WAAYYY too rich, waiting on smaller jets to arrive.

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    Any update on a starting point for jetting with the MJN-22? I am looking at running one on my TB108 with V2 head.
    Thanks in advance!

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