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Thread: upgrade proble,

  1. #1

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    upgrade proble,

    hi dudes,i have a seadoo rxp na 155hp.when it was stock it goes 59mph at 7450 in salt water.Now that i have installed solas sr-cd 11/19 r-d intake grate and riva pump wedge i run 57-69mph at 7300-7350.What the hell am i doing wrong?i thought tha i will be able to hit 62-63mph.Please tell me what to do


  2. #2
    Focker Foggy's Avatar
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    You will have to repitch that prop so you stay
    in the sweet spot of the NA engine..
    I think it's 7600 , but not sure..
    When you get your rpms back up, you will gain the speed.

  3. #3

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    the perators guide says that the rev limeter for an na engine is 7600.if i dicrease the pitch and get more rpm from 7300 rpm am i going to heart the engine?

  4. #4
    Focker Foggy's Avatar
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    If the owners manual says 7600, then you want to
    run it at 7520-7560. This will give you the best power
    and the best speed when the prop is pitched correctly.
    You will not hurt the engine. It is designed to run just
    under the rev limiter. And you won't be Lugging the engine
    at low rpms anymore.. so it'll actually be better

  5. #5

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    and what exactly do i have to do with the impeller?

  6. #6
    Focker Foggy's Avatar
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    send it out to Impros, PPG, or somebody that
    specifically does PWC impellers to have it repitched

  7. #7

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    i still dont get it.What do i have to do to pitch my impeller?

  8. #8
    paulthepwner's Avatar
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    Read this.

    http://www.greenhulk.net/forums/showthread.php?t=2614

    Alternately, you can send it to a shop that will do it for you.

  9. #9

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    thanks a lot dude.It was really helpfull

  10. #10

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    can anyone tell me that the problem does come from the fact that i havend install an air intake in my seadoo?

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