Jacuzzi wj impeller shim?
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Jacuzzi wj impeller shim?

  1. #1
    Senior Member 74glencoe's Avatar
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    Default Jacuzzi wj impeller shim?

    jacuzzi wj pumps shim between the bearing housing and the suction housing I believe. I was wondering if the shims to bring an impeller forward towards the suction housing (for less front side clearance) need to be installed with the pump dis-assembled or can they be put behind the bearing housing with the pump fully assembled? Does moving the shaft forward using this method effect any thing I should be worried about?

    I have attached a picture of my pump in the boat with a red pointer showing where i believe the shims should go.
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  3. #2
    Senior Member Mash on It's Avatar
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    Default Shimming

    I shimmed my WJ using 3 stainless washers (per bolt) and the spec was something like .020 or .025 (front of impeller to suction housing) from Jack @ MPD
    I measured each washer for consistency. (Home Depot speed and marine)
    *specs are from 2008* (If I remembered right)

    He also detailed my stainless PJX impeller, too (like a work of art)

    Huge out-of-the-hole difference. top end netted me 71.8, gps'd (74 Glenco 19', BBC)

    Dan'l

    Edit: looks like there is plenty of driveshaft spline for shimming
    Last edited by Mash on It; 04-27-2015 at 09:59 AM.
    "Never mind the mule, Just load the wagon"
    '76 Eliminator 21'

  4. #3
    Senior Member 74glencoe's Avatar
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    Default

    Thanks for the feedback. I made shims out of aluminum, ( half circles with bolt pattern in them. brought impy forward .016" to make clearance .030 from .046. Just trying to make sure I am not messing anything else up.

    Would a shouldered wear ring do the same job? Anybody ever made one?

    Seems the wear ring would be pretty easy to make out of Delrin or another rigid plastic. Maybe delrin would enable tighter skirt clearance since it is self lubing?
    Last edited by 74glencoe; 04-27-2015 at 08:32 PM.

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  6. #4
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    Default Shims

    Quote Originally Posted by 74glencoe View Post
    Thanks for the feedback. I made shims out of aluminum, ( half circles with bolt pattern in them. brought impy forward .016" to make clearance .030 from .046. Just trying to make sure I am not messing anything else up.

    Would a shouldered wear ring do the same job? Anybody ever made one?

    Seems the wear ring would be pretty easy to make out of Delrin or another rigid plastic. Maybe delrin would enable tighter skirt clearance since it is self lubing?
    What you are doing is correct. As far as a shoulder ware ring N/A Jacuzzi parts are still available but a little hard to find. Chance 's are you have a plastic ware ring that over a period of time will ware out just thru normal use. By moving the impeller forward will give your pump a shot in the arm, out of the hole and also on the top end.

  7. #5
    Senior Member 74glencoe's Avatar
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    Default

    Thank you guys for the feedback, I really appreciate it. I hope I can feel the "shot in my arm" in the seat of my pants!!

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