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  1. #1

    Stiff Mikuni Diaphrams

    What would a stiff diaphragm do to a mikuni? I was messing with a non Polaris set and had one out of 2 that was in tack but not very flexible! Thanks Z

  2. #2
    ph2ocraft's Avatar
    Join Date
    Apr 2006
    Campbell, Ca.
    I would certainly think you are not going to get the correct fuel volume/pressure with a unit that doesn't give full travel.
    I imagine it like a bicycle pump getting 1/2 a pump, it'll take twice as long to fill the tire with air.

  3. #3
    Cool! The ski was running fine but seemed to act up at higher throttle! I havent ridden it yet but I can't help but to rip into it first! lol! Thanks Birthday Boy! Z

  4. #4
    cheatin' piston popper addicted's Avatar
    Join Date
    Jul 2006
    north jersey
    Z, if they are stiff, change them. yami's run stupid high popoff, like 70psi, and a hard diaphram will make the popoff effectively higher. are they genuine mikuni's with the red aluminum nipple or cheapies?

  5. #5
    They were real Mikuni's! the ski sat a while so I have some new Mikunis diaphragms to swap in! I was noticing the crazy pop off pressures! Thanks Addicted! Z

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