Pump advice wanted
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Pump advice wanted

  1. #1
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    Default Pump advice wanted

    I'm building a jet boat I started with the hull and pump and have had to come up with everything else and do a total rebuild of the boat. The pump is set in crooked 1/4 inch off center in the front and 3/4 at the transom so I have to take it out do some glass work and reset it. since I have done so much in rebuilding this boat I was wondering if I should change pumps? It's a 17' Sanger and has a Jucuzzi 12WJ pump with a B impeller I don't see much talk about Jacuzzi pumps so was wanting some input as to if I should change it or run it and why? What should I exspect performance wise running this vs another one and if I change what would be the best one to run? I like everyone want to go fast
    Thanks for the help
    David

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  3. #2
    jetboataholic HawaiianJet's Avatar
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    Most of the guys on here run a Berkeley pump, but there are some guys with some fast boats that have a Jacuzzi pump. The Berkeley JG pump is the most adaptable pump, and you can bolt pretty much anything up to it.
    HJ

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

    Quote Originally Posted by mako shark mark View Post
    Oh yeah, Forgot to mention that the hull is a special mixture of speedcote, herculiner and rain-x, all blended together- good for another 8 mph top end.

  4. #3
    Senior Member Mojave85's Avatar
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    Really depends on what you want from the boat, type of hull you have and how much power you plan on putting to the pump. Jacuzzi WJ are not a bad pump if you have moderate horsepower.

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  6. #4
    Senior Member Brendellajet's Avatar
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    Quote Originally Posted by dirtmeister2002 View Post
    I'm building a jet boat I started with the hull and pump and have had to come up with everything else and do a total rebuild of the boat. The pump is set in crooked 1/4 inch off center in the front and 3/4 at the transom so I have to take it out do some glass work and reset it. since I have done so much in rebuilding this boat I was wondering if I should change pumps? It's a 17' Sanger and has a Jucuzzi 12WJ pump with a B impeller I don't see much talk about Jacuzzi pumps so was wanting some input as to if I should change it or run it and why? What should I exspect performance wise running this vs another one and if I change what would be the best one to run? I like everyone want to go fast
    Thanks for the help
    David
    My last boat had a WJ. Its a good pump, but has a few inherent design flaws, the biggest of which is the cast in nozzle on the bowl. A popular mod is to cut this off, and weld an adapter ring on to allow use of berk droop & diverters. The jacuzzi bowl is still restrictive after the nozzle has been cut and can use some porting work by a pro who knows what they are doing.

    When all was said and done my boat was performing comparably to similar hulls with similar power running berks or the like... mid 90's first time out with no setup...

    Since you already have the pump(personally speaking here) I would keep it. If you want to go fast, you are going to have to send the pump off to have some work done on it regardless of the brand.
    If you have any questions feel free to shoot me a PM, I have lots of pics of the work done to my old pump.

  7. #5
    "It's HONDO, honey" Kyle's Avatar
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    Quote Originally Posted by HawaiianJet View Post
    Most of the guys on here run a Berkeley pump, but there are some guys with some fast boats that have a Jacuzzi pump. The Berkeley JG pump is the most adaptable pump, and you can bolt pretty much anything up to it.
    Alright Jacuzzi pumps when they came out were for more heavy duty use and generally had a longer run life than a berk. The jacuzzi you can't do much two and to do the jg style reciever, cut and weld etc you'll have the same amount of time and money in it if you just went out and bought a jc or jg pump and intake, and a jg bowl or a converted jc and whatever you wanted to do on you place diverter (trim). A berk just has more of a market for parts out there where a jac is kinda like a dead end, you can just rebuild it. Not to mention get a rebuild, Tom at JBP hooks it up, great geniue guy taught me it all, the cost to r&r a berk will be much less than a jac. I vote jc intake, pump, and coverted bowl, and they'll see you go haulin a$$ by.
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  8. #6
    Senior Member 71kona's Avatar
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    put an energizer kit on it and go play
    this boat will be the death of me

  9. #7
    mo balls than $cents$ IMPATIENT 1's Avatar
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    Quote Originally Posted by 71kona View Post
    put an energizer kit on it and go play
    how much is that compared to a complete 12jg ebay 300 pump , a 200 used intake, and a 400 berk rebuild kit

    convert it, it'll cost you alot of time and $$ to make that jac.. do what a low budget built berk will do outta the box.just my .02

  10. #8
    What the Hell is That? 72Hondo's Avatar
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    I've always wondered about putting a droop on my JAC. It would be mostly for the Rooster I'm fine doing 60-70 on about 350HP.

  11. #9
    Senior Member jetboatperformance's Avatar
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    Wj Jacuzzis work well fairly well IMO and can be made to work better with a some effort and enginuity eg bowl mods impeller work and Adaptor rings like Brendellajet was talking about , We now produce (in quantity) those Wj Billet Adaptor rings which allow all Berk/Dom/AT etc "Bolt ons" such as nozzels, wedges,droops ,trim units etc to be easily used . That said the "opening" in the hul for the Wj is slightly smaller than the Berk intake making a swap of the Berkeley style intake and Berk style Jet a fairly simple deal. Happy to "coach" you if you want to undertake such a task. The AT Energizer kit is a "clean and simple" changeover and also offers loads of possibilities as well including HD shafts, Bowls etc etc Happy Muthas Day everyone Tom

    WJ adaptor


    WJ

    WJ energized
    Last edited by jetboatperformance; 05-11-2008 at 09:31 AM.

  12. #10
    "It's HONDO, honey" Kyle's Avatar
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    Default Jc to Jg conversion

    If you decide to go the Jc to Jg conversion give mike a call down at E-performance marine, he can convert the c to a g for the cost of used jg basically. Plus all said and done you get something that is unique and the lenght of the bowl is similar to the Agressor.
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  13. #11
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    Quote Originally Posted by Btnhtillidie View Post
    I've always wondered about putting a droop on my JAC. It would be mostly for the Rooster I'm fine doing 60-70 on about 350HP.
    Thats what I was wondering having never had this boat in the water yet with 350-400 hp would it be worth the time and money trying to make it go faster? 60-70 doesn't sound bad but I know once I get it running I'll want more. but I just built this engine using alot of parts I had from race cars so didn't want to jump up in engine size just yet already having a had time hidding the cost from the wife.
    David

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