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Thread: ringed impeller

  1. #1

    Join Date
    Feb 2019
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    ringed impeller

    Why are there annular rings/grooves on the wear ring clearance area of this impeller?

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  2. #2

    Re: ringed impeller

    [QUOTE=weedy64;108285]Why are there annular rings/grooves on the wear ring clearance area of this impeller
    Southwind Hot Boats - All your "Hot Boat" needs in one place!
    Engine, Jets, V-Drives, etc.. Rancho Cordova, CA 916-600-6938

  3. #3

    Re: ringed impeller

    They are there to create a hydro lock condition. Common practice on race pump modifications
    Southwind Hot Boats - All your "Hot Boat" needs in one place!
    Engine, Jets, V-Drives, etc.. Rancho Cordova, CA 916-600-6938

  4. #4

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    Feb 2019
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    Abbotsford
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    Re: ringed impeller

    Any special clearances required for regular wear ring? shouldered wear ring?

    using impeller with a SBC I own until I get a Merc BB im working on done.

    Thanks

  5. #5

    Re: ringed impeller

    .022 total clearance between wear ring and impeller wear ring surface .022 to .024 impeller to suction or face of shoulder on wear ring if that is what you are running.
    Southwind Hot Boats - All your "Hot Boat" needs in one place!
    Engine, Jets, V-Drives, etc.. Rancho Cordova, CA 916-600-6938

  6. #6

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    Feb 2019
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    Abbotsford
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    Re: ringed impeller

    Thanks, I will try and achieve that.

    I know its a bit of a beater impeller but I will try and tune it up so I can run it for a bit. The 3 yr old on the rubber duck pull toy likely won't care.

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