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  1. #1
    PWCToday Regular Marsig58's Avatar
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    Dual Carbs Throttle Valve Wear and Loosing E Clips

    Hi Harry,

    I run Dual 46mm BlackJack Carburettors on my SXR850. The issue I am having is that the E Clips that hold the shaft in place come off the shafts. The first time I noticed this I looked at the throttle valve and noticed wear like the spring was pulling the vavle into the wall of the carb. I purchase a new valve kit and installed it. Im still having this problem and would like to know if you might be able to give me some advice on how to fix this issue.

    The main carb has some slight wear on the wall from the throttle valve but not major.

    Ben

  2. #2
    Top Dog cman's Avatar
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    Re: Dual Carbs Throttle Valve Wear and Loosing E Clips

    This has happened to me before as well. I figured it must be an alignment issue between the carbs and took forth realigning them. I was not using a billet fuel rail bar at this time (like the ones that come with novi carbs) and I lost probably 3 of the e clips. I picked a fuel rail bar and really spent some time aligning the carbs and linkage properly and have not had the issue since then.

    Also, improper throttle shaft spacing and movement wears out the brass butterflys very quickly! make sure you spend some time getting them absolutely perfect (so the shafts do not slide back and forth allowing the butterflys to rub on the carb bodies) and you shouldnt have any issues.
    Check out Poor Boy Racing on Facebook
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  3. #3
    PWCToday Regular Marsig58's Avatar
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    Re: Dual Carbs Throttle Valve Wear and Loosing E Clips

    Thanks for the reply. I have two new shaft kits on the way so will put them in and try get the alignment the best I can.

    Is the bar on the back of the Novi carbs a fuel rail or is this just a flat bit of Aluminum for keeping them linked?

  4. #4
    Attention ***** PWCToday.com Is My Home Away From Home JonnyX2's Avatar
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    Re: Dual Carbs Throttle Valve Wear and Loosing E Clips

    It is just a piece of stock that keeps the carbs aligned and rigid
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  5. #5
    PWCToday Regular aqualocos's Avatar
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    Re: Dual Carbs Throttle Valve Wear and Loosing E Clips



    This is the only solution for that problem! A hd coupler kit wil take out al the movement of the shafts...the clips wil fall out again and ruin you butterflys again and again...

    Tip if you put in new butterflys dont forget to ruin the screws that hold the butterfly in the shafts just mess it up with some pliers so the screws dont ever come out again!! (after you put the screws in)

    Verstuurd vanaf mijn SM-G920F met Tapatalk
    Last edited by aqualocos; 03-02-2016 at 03:54 PM.

  6. #6
    Top Dog cman's Avatar
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    Re: Dual Carbs Throttle Valve Wear and Loosing E Clips

    very cool coupler, where do you find those guys?
    Check out Poor Boy Racing on Facebook
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    Need parts? Optima Racing is the place
    http://optimaracing.com/

  7. #7
    PWCToday Regular aqualocos's Avatar
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    Re: Dual Carbs Throttle Valve Wear and Loosing E Clips

    Its not only the coupler you need...the set comes with 3 shaft holders and hd coupler i make the sets myself...and the coupler assures that both carbs open ad the same time engine runs better stationery...the rubber coupler is a piece of

    Verstuurd vanaf mijn SM-G920F met Tapatalk
    Last edited by aqualocos; 03-02-2016 at 04:50 PM.

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