jucuzzi wj? yj?
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jucuzzi wj? yj?

  1. #1
    77 hawiian
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    Default jucuzzi wj? yj?

    so i am new to the jet boating world and just purchased my first jet boat it a 77 hawiian 18 foot has a 383 with a jucuzzi pump. my question is how can i tell what pump i have the most noticable thing on it is a hourse sho shaped plate with six allen screws on it 3 on each side. its at the back of the pumpwhen standing behind the boat and lokking at it. also wich pump is better the wj or yj thanks for all your help

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    History Repeating Storz's Avatar
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    Look for a metal stamp on the pump somewhere that has the model information in it. My boat is a 77 Caribbean with a WJ - they are great pumps that last a very long time with minimal maintenance
    '84 Laser LTV - Restoration in progress
    '77 Caribbean

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    Senior Member jetboatperformance's Avatar
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    Quote Originally Posted by mikebrittain7 View Post
    so i am new to the jet boating world and just purchased my first jet boat it a 77 hawiian 18 foot has a 383 with a jucuzzi pump. my question is how can i tell what pump i have the most noticable thing on it is a hourse sho shaped plate with six allen screws on it 3 on each side. its at the back of the pumpwhen standing behind the boat and lokking at it. also wich pump is better the wj or yj thanks for all your help

    The "Plate" you refer to with Allen screws would indicate your jet as a YJ that plate serves as a manual trim adjustment for the steering deflector nozzle (the WJ bowl has a grease zerk in the bowl in the same bowl area) That trim Plate area is also where the OEM hydraulic nozzle trim was mounted if so equipt (now obsolete) As to which jet is better , they are both quality pieces IMO and well built but have different designs, functions and applications The YJ an axial flow jet and does well in big boats (crusiers , tenders, work boats etc) with low to moderate power moving big loads etc. The mixed flow WJ is more similar to the design of Berks and AT jets and lends itself to HP and performance mods , almost no parts interchange between the two Jets BTW nor can they simply "swap" out on their respective intakes . Both Jets can be modified with mixed flow "Energizer kits" , the YJ typically benifits more from such a mod in terms of performance these kits may be of the greatest advantage when repair cost for original parts outweighs the Kits ... Tom

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    Senior Member rvrskir's Avatar
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    Hey Tom,
    you say it has a manual trim? How do you adjust it? Can it bring the nose of the boat down? I know its no Place diverter but can it adjust enough to bring the nose down at cruising speeds?
    1973 Rogers Cyclone- 16' 6"- 350 SBC
    1976 Hondo Pantera- 18'- 455 BBO

  7. #5
    Senior Member jetboatperformance's Avatar
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    Quote Originally Posted by rvrskir View Post
    Hey Tom,
    you say it has a manual trim? How do you adjust it? Can it bring the nose of the boat down? I know its no Place diverter but can it adjust enough to bring the nose down at cruising speeds?

    While your buddy or GF drives you can hook your toes into the ski tow lean over the transom and with an allen wrench and screw driver turn the large screw in or out to trim
    Just kidding .... that adjuster will allow you to adjust the YJ nozzle up and down from center several degrees down will force the bow in up will free it up you'll have to work with it to find the "sweet spot" call if you need help Tom

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    Senior Member rvrskir's Avatar
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    Thanks tom! you might be getting a call this weekend if i get stuck. this boat seems to ride a little nose high
    1973 Rogers Cyclone- 16' 6"- 350 SBC
    1976 Hondo Pantera- 18'- 455 BBO

  9. #7
    Senior Member skippers WFOT's Avatar
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    anyone have another of these trim plates layng around that is still adjustible? i tryd to put an allen socket on mine to loosen up the set screw....after soaking it in penetrating oil....and the allen snapped off flush in the bolt head
    1977 Charger 17Foot. jacuzzi golden eagle
    402 BBC tunnel ram with dual 660 fuel leaks on the top.

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    Quote Originally Posted by jetboatperformance View Post
    While your buddy or GF drives you can hook your toes into the ski tow lean over the transom and with an allen wrench and screw driver turn the large screw in or out to trim Just kidding .... that adjuster will allow you to adjust the YJ nozzle up and down from center several degrees down will force the bow in up will free it up you'll have to work with it to find the "sweet spot" call if you need help Tom
    tom, great answer

  11. #9
    AKA OhOneWS6 Last Mohican's Avatar
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    I know it is a little late but here is a thread I started to help identify some of the different pumps.

    http://www.performanceboats.com//showthread.php?t=68027

  12. #10
    Menominee, mi UP
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    Quote Originally Posted by rvrskir View Post
    Thanks tom! you might be getting a call this weekend if i get stuck. this boat seems to ride a little nose high
    keep an eye on ebay ive seen the power trim on there from time to time

  13. #11
    Senior Member skippers WFOT's Avatar
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    i know a gut here in sacramento that has one but he thinks his is made of gold.
    1977 Charger 17Foot. jacuzzi golden eagle
    402 BBC tunnel ram with dual 660 fuel leaks on the top.

  14. #12
    77 hawiian
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    thanks so much for all your help sound like the energiser kit is a good way to go. it works good now just not as fast as i was expecting i can live with the speed. but would like to have that big roost do they make a diverter for the wj jucuzzi

  15. #13
    77 hawiian
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    sorry i mean yj jucuzzi pump

  16. #14
    AKA OhOneWS6 Last Mohican's Avatar
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    No diverter for the YJ.

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