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Thread: ho pump ,prop??

  1. #1
    deansta's Avatar
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    ho pump ,prop??

    just would like to know what size prop and nozzle is every one using in the ho pumps on the gprxp skis???

    im using a 87mm nozzle with a 16/22...


  2. #2
    mrbtd's Avatar
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    16/22 DF ?

  3. #3
    cheatin' piston popper addicted's Avatar
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    16/18 DF
    stock sc and ic
    85 nozzle

    holeshot is dead even with my friends 07 rxp with rear air and greenwheel.

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    deansta's Avatar
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    Quote Originally Posted by mrbtd View Post
    16/22 DF ?

    yeah a 16/22 df..im using a 87mm nozzle ,8500 ecu,rr i/c,and rude1 sc....

    i havnt tested the prop yet but just would like to know other peoples set ups.

  5. #5
    mrbtd's Avatar
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    I don't think it
    T will spin past 8200 even with the ecu. Joe runs a 15/20 with the same set up.

  6. #6
    deansta's Avatar
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    Quote Originally Posted by mrbtd View Post
    I don't think it
    T will spin past 8200 even with the ecu. Joe runs a 15/20 with the same set up.

  7. #7
    Moderator RX951's Avatar
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    14/20 DF
    stock motor here

  8. #8
    JFizzleJR's Avatar
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    Quote Originally Posted by deansta View Post
    yeah a 16/22 df..im using a 87mm nozzle ,8500 ecu,rr i/c,and rude1 sc....

    i havnt tested the prop yet but just would like to know other peoples set ups.
    I had the same setup (with a Riva 8650 ECU + XS IC). Spun 8400 in 70 degree weather. Prop was done by Carl @ Island Racing.

  9. #9
    deansta's Avatar
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    what mph did you get with that set up?what are you using now?

    does anyone think i should be using something else?

  10. #10
    JFizzleJR's Avatar
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    Quote Originally Posted by deansta View Post
    what mph did you get with that set up?what are you using now?

    does anyone think i should be using something else?
    Nothing good. I've had trouble with my ski since day 1. I'm using the Seadoo Pump now. The stock HO pump has too much cavitation for my liking. The more advanced Yamaha tuners know how to make it better, but I'm in no position to do that.

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