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  1. #1

    Clearance on impeller/housing.....

    What is the recommended clearance for the GPR setup. I have about .008 on leading edge and around .006 on the trailing edge. Does this sound right. This is a Dynafly prop and brand new housing....thanks

  2. #2
    Hydrotoys's Avatar
    Join Date
    Jul 2005
    Mesa, AZ
    The manual calls for a stock impellor clearance to be 0.014 to approx 0.018. You are definately close...probably a new setup?

  3. #3
    This is a new OEM liner with the Dynafly Solas 15/25 in a HO pump. Not sure why the clearance is this close?? On the Ultra pump we always ran about .006-.008 on clearance. We could actually do something about it with that pump setup with the shims.....

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