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Latest post Fri, Jul 6 2018 5:44 AM by FX. 2 replies.
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  • Thu, Jul 5 2018 1:39 PM

    Carb Rejet.

     I have an 86 FXSTC with an 80 in. evo. How do I know what jet size to go up to when I'm installing drag pipes?

  • Fri, Jul 6 2018 4:40 AM In reply to

    • Ironhead
    • Top 10 Contributor
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    • Joined on Tue, Mar 21 2006
    • Near Sunset at Sunset Beach, O'ahu, HI Oct 23, 15
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    Re: Carb Rejet.

    sndyrige - first, welcome to the forums and whatpart of the country are you from?

    As you have guessed, you will normally have to go to a richer jet - the article below should be a bit of help (although for a more-current carb than on your '86).  your shop manual should also have a section on replacing jets and, more importantly, on how to read your plugs to ensure you have the proper jets.

    http://community.jpcycles.com/articles/tech-articles/pages/carburetor-jetting-and-efi-adjustment.aspx

     

    Hope this helps

    The first tool out of the box should be the "book"  Geeked

  • Fri, Jul 6 2018 5:44 AM In reply to

    • FX
    • Top 10 Contributor
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    • Joined on Sun, Mar 12 2006
    • Tonawanda NY
    • Posts 5,201
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    Re: Carb Rejet.

    There is no set rule sndyrige, all applications are different, you have to 'read the plugs'...

    FX

    Don't force it, get a bigger hammer.

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