Impeller slipping???
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Impeller slipping???

  1. #1
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    Default Impeller slipping???

    Looking at another jet and seller states that when there is more than one person in the boat the impeller "slips" under full throttle launches.

    I don't know much about them to begin with but this is a new one to me. What is the diagnosis here?

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  3. #2
    Senior Member DuaneHTP's Avatar
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    Probably have a loose pump there that just quite can't keep up when the extra weight is added.

  4. #3
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    loose as in tighten it down or pull it apart and rebuild it?

    Thanks for the response!

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  6. #4
    ... Some Kind Of Monster's Avatar
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    Quote Originally Posted by AZsquirtgun View Post
    loose as in tighten it down or pull it apart and rebuild it?

    Thanks for the response!
    Pull it apart and rebuild it

  7. #5
    Sit N' Spin Jetaholic's Avatar
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    Quote Originally Posted by AZsquirtgun View Post
    loose as in tighten it down or pull it apart and rebuild it?

    Thanks for the response!
    Loose as in tear the pump down and rebuild. There are clearances around the impeller that "loosen up" overtime.

  8. #6
    Senior Member H20MOFO's Avatar
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    Maybe it's a panther, lol.
    Another Hot Boat refugee

  9. #7
    jetboataholic HawaiianJet's Avatar
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    Stake it!

    J/K, Rebuild it!
    Last edited by HawaiianJet; 06-23-2008 at 02:47 PM.
    HJ

    ***FOR SALE*** 1978 19' Full Stringer Hawaiian Molokai Jet Boat w/ Berkeley 12JC-AB and Chevy 440 Tall Deck ***FOR SALE***

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  10. #8
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    Cool, dealer says $1100, but indie says $400. I suspect that this is an opportune time to upgrade the impeller?

  11. #9
    mo balls than $cents$ IMPATIENT 1's Avatar
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    Quote Originally Posted by AZsquirtgun View Post
    Cool, dealer says $1100, but indie says $400. I suspect that this is an opportune time to upgrade the impeller?
    if you're talking 400 for the rebuild kit, that should come with a alum impellor.

  12. #10
    Senior Member W.O.T's Avatar
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    im running a smaller impeller in my ride b/c. it does slip/cavitate under hard accelercation. but once i pop on plane it takes off and hauls the titties. my motor spins the high rpms. i sacrifice the low end holeshot for the faster top speed. i dont have a race boat so im not worried about holeshot but it gets the job done on top end.

    maybe this is what he means or also a worn pump. i know i want to freshen mine up.

  13. #11
    E-7 Sheepdog (ret) SmokinLowriderSS's Avatar
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    I also have a known tight pump, but due to engine torque, if I flat-foot it wide from idle, I cavitate the pump badly, regardless of who is in the boat. I run a largish impeller (full Aggressor B, equiv to a Berk A) and in my case it is simply the pump emptying before water can feed it with very little fwd. motion (which is the same thing W.O.T. is describing he has).
    "As democracy is perfected, the office of president represents, more and more closely, the inner soul of the people. On some great and glorious day the plain folks of the land will reach their heart's desire at last and the White House will be adorned by a downright moron."
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    The rest of us are being dragged along kicking and screaming.

  14. #12
    Senior Member cruzer's Avatar
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    AZ,

    If you need a hand with that pump, I am close....
    Cruzer
    21 Eliminator Daytona. Blown 540

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