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Vacuum Port Manifold?

Discussion in 'XJ Modifications' started by jkurtzb, Feb 21, 2007.

  1. jkurtzb

    jkurtzb New Member

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    I was reading about a mod that someone did to their carbureted FZ-1. They made a manifold out of fuel hoses that connected the 4 vacuum ports together. They claimed it helped equalize the vacuum variances between the carbs as well as increasing smoothness and performance. Has anyone tried this on an xj?
     
    jkurtzb, Feb 21, 2007
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  2. kevineleven

    kevineleven Member

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    Yeh, Yamaha did, it's called YICS.
     
    kevineleven, Feb 21, 2007
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  3. jkurtzb

    jkurtzb New Member

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    So then, it seems to me, the YICS tools sole function is isolate each carbs' vacuum so that the stick set can "read" them individually?
     
    jkurtzb, Feb 21, 2007
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  4. RickCoMatic

    RickCoMatic Well-Known Member

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    Bullseye!

    You get to select any prize of the top shelf!
     
    RickCoMatic, Feb 21, 2007
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  5. jkurtzb

    jkurtzb New Member

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    I knew there was a reason I made that YICS tool ...
     
    jkurtzb, Feb 21, 2007
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  6. ArizonaSteve

    ArizonaSteve Member

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    I tried that once and couldn't tell any difference.
     
    ArizonaSteve, Feb 22, 2007
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