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  1. #1

    Default Blast only runs perfect with float bowl vent blocked

    Ok so I've been having an issue where at higher RPM wide open throttle the bike bogs/acts like its hitting a rev limiter. Works fine at half throttle and low rpm.

    I am running a velocity stack intake and custom 1 3/4" exhaust with 45/175 jetting and needle shimmed 0.050.

    I just discovered today that if I cover the float bowl vent on the front of the carb, the bike accelerates smoothly and goes wide open throttle all the way to redline.

    What gives? I'm pretty sure from the factory this vent is supposed to be open.

  2. #2
    Join Date
    Feb 2018
    Las Vegas, NV


    I had this problem at speeds above 60mph, but it was due to my knee / leg blocking the stack even just slightly, so I pull my leg away from it and speeds up with no problem, prior to that I also had the wrong stack filter which was also restricting air.

  3. #3
    The Boss
    Jet-Lee's Avatar
    Join Date
    Mar 2012
    Oakley, CA


    I know who you are now! lol

    Damn, I'm not on this forum much anymore at all.
    "It is impossible, until some crazy son of a bitch has the audacity to believe that no matter what the expert says, I can still do that shit." - C.T. Fletcher

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