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I need answers!

  1. #1
    Seriously off center slowride's Avatar
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    Default I need answers!

    With the new 545 going in Slowride, a couple questions have arisen.
    First, it has a 5 blade Jacuzzi WJ pump with an aluminum impeller. I'll likely be exceeding 500 horse, so are there any options to go with a stainless impeller and possibly a AA equivalent? I know I can replace the pump with a Berk, but would like to avoid it if possible.
    Second, I have Harman long bolt logs and have pretty much made up my mind to modify them for CJ-sized exhaust ports so i can keep it through transom. Material will need to be heli-arced on the top of the ports so I can open them up to match the ports, but does anyone know how close to the head flange the passages are? I would like to blend them at least a 1/2" inside the entry but would like to know before hand how much wall I have before I blow into the water passage. Anyone ever done a cutaway of long bolts?






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  3. #2
    Senior Member jetboatperformance's Avatar
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    Quote Originally Posted by slowride View Post
    With the new 545 going in Slowride, a couple questions have arisen.
    First, it has a 5 blade Jacuzzi WJ pump with an aluminum impeller. I'll likely be exceeding 500 horse, so are there any options to go with a stainless impeller and possibly a AA equivalent? I know I can replace the pump with a Berk, but would like to avoid it if possible.
    Second, I have Harman long bolt logs and have pretty much made up my mind to modify them for CJ-sized exhaust ports so i can keep it through transom. Material will need to be heli-arced on the top of the ports so I can open them up to match the ports, but does anyone know how close to the head flange the passages are? I would like to blend them at least a 1/2" inside the entry but would like to know before hand how much wall I have before I blow into the water passage. Anyone ever done a cutaway of long bolts?
    There are few stainless WJs likely floating around out there , there were very few ever that i recall, when we built the Jet two years back for the HR Hondo race boat we used the OEM Aluminum impeller , With standing the conversion kits and the Jacuzzi PWX there are few options for that Drive , an "A" cut Jacuzzi WJ would be close in operation to a Berkeley AA Tom

  4. #3
    Seriously off center slowride's Avatar
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    So if I were to go with an energizer kit can I use a Berk/AT impeller?






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    yes

  7. #5
    Senior Member 74glencoe's Avatar
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    Saw a wj with stainless c cut impy on eBay a few days back... Maybe still for sale

  8. #6
    Seriously off center slowride's Avatar
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    Looks like I'll need to have a conversation with Tom about an energizer kit, AA mag-bronze or stainless impeller and Place Diverter housing for a Berk. I'm running a hydraulic diverter for the WJ and want to switch it over to Berk (if Place even sells just the housing).






  9. #7
    Senior Member jetboatperformance's Avatar
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    Quote Originally Posted by slowride View Post
    Looks like I'll need to have a conversation with Tom about an energizer kit, AA mag-bronze or stainless impeller and Place Diverter housing for a Berk. I'm running a hydraulic diverter for the WJ and want to switch it over to Berk (if Place even sells just the housing).
    Depending on the vintage of your current WJ Diverter (early or late, a picture will clarify this) , you will simply lose their special WJ adaptor housing and it (the diverter) will directly swap over to the nozzle adaptor or droop that comes with the mixed flow conversion kits. Very early Place units for WJ utilized the WJ OEM Nozzle deflector housing and wont work without significant mods. Once modified btw Stainless and Bronze impellers , inducers etc are all readily available

  10. #8
    Seriously off center slowride's Avatar
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    It's a newer Diverter, so hopefully the adaptor housing will save a couple bucks. Is the bowl OD the same so the Jacuzzi transom adapter is re-used?
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  11. #9
    Senior Member jetboatperformance's Avatar
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    Quote Originally Posted by slowride View Post
    It's a newer Diverter, so hopefully the adaptor housing will save a couple bucks. Is the bowl OD the same so the Jacuzzi transom adapter is re-used?
    Yes your trim is the later model, that adapter is worth some $$ to someone wanting to use a Berk style trim on a Jacuzzi as you might imagine... Re the Bowl yes they can be standard OD

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    Default wj ss empeller

    I have a new wj stainless steel empeller, B cut whitch is about a Berkeley A+ Jim 1818-890-1867

  13. #11
    Seriously off center slowride's Avatar
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    I think upgrading the pump and going AA is the best way to go. The engine is being built to produce torque and I really don't want to spin it up higher than needed. It'll be nice not being tied into Jacuzzi parts for repairs in the future too. The wife loves this boat, so spending a few bucks the right way now should give us years of fun.






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