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  1. #1
    x2ryder's Avatar
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    Ultra 150 crossover tube?

    I'm in the process of adding a clean set 42 Keihin's. They were originally set up by Aquasports. I had the Oem intake bored out to 42mm also. Question I have is should I block the cross over in the intake manifold?


  2. #2
    SplishSplash's Avatar
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    Quote Originally Posted by x2ryder View Post
    I'm in the process of adding a clean set 42 Keihin's. They were originally set up by Aquasports. I had the Oem intake bored out to 42mm also. Question I have is should I block the cross over in the intake manifold?

    No. No point, and if the 42's are CV then it needs the crossover.

  3. #3
    x2ryder's Avatar
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    Quote Originally Posted by SplishSplash View Post
    Quote Originally Posted by x2ryder View Post
    I'm in the process of adding a clean set 42 Keihin's. They were originally set up by Aquasports. I had the Oem intake bored out to 42mm also. Question I have is should I block the cross over in the intake manifold?

    No. No point, and if the 42's are CV then it needs the crossover.
    Nope not CV's. I just know in the past Art at Jetworks always had me do it with his carbs.

  4. #4
    SplishSplash's Avatar
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    Hmm, hard to say then, but when I ran Buckshot carbs on my Ultra, I tried open and blocked and it seem to run a little better with it open.

    Here is some interesting reading on the subject. Scroll down and it talks about your carbs and blocking of the intake crossovers.

    http://www.groupk.com/k1200-1pipe.htm

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