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  1. #1
    we7313's Avatar
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    Which FZS Impeller for max acceleration

    I'm looking to get a new impeller for max acceleration. I;m not really into top end speed, but love the rush of acceleration.
    Can anyone recommend a good impeller?
    I'm also looking to get the intake grate replaced at the same time.

    Any suggestions would be much appreciated.


  2. #2
    ercBOOSTED's Avatar
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    Let everyone know what mods you have and what rpms you are turning. That will help them recommend a good prop for you.

  3. #3
    we7313's Avatar
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    Stock

    Quote Originally Posted by ercBOOSTED View Post
    Let everyone know what mods you have and what rpms you are turning. That will help them recommend a good prop for you.
    I'm bone stock. I think that means i'm 7,500 rpms.

  4. #4
    SHOBiz's Avatar
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    I think that was a 12/21 RD Impeller

  5. #5

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    Quote Originally Posted by we7313 View Post
    I'm bone stock. I think that means i'm 7,500 rpms.
    All things equal it is like gears in a car, the factory 12/19 will probably give you the most torque and acceleration beause it is a high numerical gear. I have the 12/22 with the exhaust and intake mods and you can tell you lost some acceleration versus the oem prop. On the other hand it probably has better acceleration then a stock ski and oem impeller.

  6. #6
    we7313's Avatar
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    Quote Originally Posted by Jack B View Post
    All things equal it is like gears in a car, the factory 12/19 will probably give you the most torque and acceleration beause it is a high numerical gear. I have the 12/22 with the exhaust and intake mods and you can tell you lost some acceleration versus the oem prop. On the other hand it probably has better acceleration then a stock ski and oem impeller.
    So are you saying stay with the stock impeller for best acceleration?

  7. #7
    Addicted Member 5001craig's Avatar
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    Quote Originally Posted by we7313 View Post
    So are you saying stay with the stock impeller for best acceleration?
    The way I unserstand it is that if you are making stock power, the stock impeller is best.

    I added the FF exhaust, Riva intake and intake upgrade and am now cavitating badly out of the hole due to the additional power from the upgrades I have done--I need a prop with more bite and am thinking the new Dynafly 13/22R would be the ticket (that is unless I can find someone that wants to sell a good used R & D Pro Pitch 13/24 or 13/25).

    I would think unless you are going to mod the ski and are happy with stock speed/acceleration, go back with a stock prop.

    My .02.

  8. #8

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    impeller

    Quote Originally Posted by we7313 View Post
    So are you saying stay with the stock impeller for best acceleration?
    You will lost rpm's,same accelaration and top speed by increasing prop pitch on stock boat.

  9. #9
    we7313's Avatar
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    Rivas Recommendation

    Quote Originally Posted by mario View Post
    You will lost rpm's,same accelaration and top speed by increasing prop pitch on stock boat.
    I just talked to riva and they recommended this:
    RIVA FZR/FZS Pump Seal Kit
    RY25050

    RIVA FZR/FZS Top-Loader Intake Grate
    RY22050

    RIVA/Solas 'R'-series DynaFly Impeller
    YS-DF-13/22R

    This sound like a good idea?

    Should I do the top 2 and stock impeller?

  10. #10
    mjh3ides's Avatar
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    Quote Originally Posted by we7313 View Post
    I just talked to riva and they recommended this:
    RIVA FZR/FZS Pump Seal Kit
    RY25050

    RIVA FZR/FZS Top-Loader Intake Grate
    RY22050

    RIVA/Solas 'R'-series DynaFly Impeller
    YS-DF-13/22R

    This sound like a good idea?

    Should I do the top 2 and stock impeller?
    A stock boat will probably be way overpropped with that impeller. Getting the grate & seal kit will help acceleration by eliminating cavitation & improving hookup, but you'll give it all back if you don't have enough power to turn the taller prop. Wait until you add some power mods before going to a new impeller. IMO, the Skat Swirl(R&D Pro Pitch) will give better holeshot & acceleration over the DF, but will produce lower top seeds. I haven't tested the DF on my SHO yet since I'm still waiting on the adjustable nozzle to get the revs tuned right, but on the GPR these have been consistent results between those two impellers.

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