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Thread: Pump cone 300X

  1. #1
    Kamaki's Avatar
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    Question Pump cone 300X

    Any gain to get, with another pumpcone than stock?

    Canīt find any report or feedback in any older tread...

    R&D
    Lucky 13
    Adjust-A-Trust
    TBM
    ?
    ?
    or
    Stock Cone

    Which one do just you think the best one ?


  2. #2
    "just sayin".. jetdave56's Avatar
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    Quote Originally Posted by Kamaki View Post
    Any gain to get, with another pumpcone than stock?

    Canīt find any report or feedback in any older tread...

    R&D
    Lucky 13
    Adjust-A-Trust
    TBM
    ?
    ?
    or
    Stock Cone

    Which one do just you think the best one ?
    Sure other ultra owner want to know same thing...
    Since I developed some slight cavitation going back to a stock prop and having a reflash I'm spending the off season buying new and used combinations of cones ,washers ,wedges .

    Ive bought the R&D anti cavitation cone where the top part of the cone is straighter so by "theory " the thrust shoots straighter and farther less turbulence in the pump,there's no additional washers for extending for the Ultra but I purchased a Sea Doo cone washer but haven't received yet ,don't know if it will fit flush..

    Got the TBM wing cone on its way cheap ",suppositly"it straightens the thrust out of the pump..

    WetWolf Ajust A Thrust cone lengthens as thrust builds ,something like that...couldn't get one cheap,

    Jerrys Lucky 13 I Haven't heard any feedback on the Ultra ,like to hear more before ordering as it is a little pricey though if it gets rid of cavitation due to too high rpms on holeshot and without losing top speed I'm on it!

    Pump cones purpose is to reduce cavitation less turbulence in the pump and straightening the thrust,do they make a noticeable difference?..According some old threads here on the subject the answer is mostly No though the need for one is for cavitating on holeshot problems not neccessarlly top speed gain..

  3. #3
    nicjak's Avatar
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    some say my tbm winged cone is the difference its speed is a little higher than other but to be honest when i tested it i didnt notice anything.

  4. #4
    "just sayin".. jetdave56's Avatar
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    Yep I remember reading your review and a few others ...

    The higher rpm modified FZR and RXP benefit from a longer cone I believe..

  5. #5
    Kamaki's Avatar
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    Thanks for your responding jetdave56 & nicjak.
    Isn't it anyone else out there how can tell something about benefits with the different cones?

  6. #6
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    after quite a bit of testing ive had some success with the l13 cone. i have different pump/nozzle setup then most but if you spend the time to test there are benifits

  7. #7
    GZA's Avatar
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    Quote Originally Posted by Mike H View Post
    after quite a bit of testing ive had some success with the l13 cone. i have different pump/nozzle setup then most but if you spend the time to test there are benifits
    Mike, any tips for the L13 cone? I have my hands on one to play with, and also have a bored out jet nozzle. Heading to the lake on Thurs so might get a chance to trial a few setups.

  8. #8

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    Thats all it is, trial and error. Have to figure out what works for you. You get too many spacers in there and you'll feel it get lazy even if it's overall faster, then play with the nozzle

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