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Thread: Max RPM

  1. #1

    Max RPM

    Hi All

    Just got a brand new 15F a weeke ago.
    Got about 6 hours on her til now.
    Acording to the book, she will go to redline 8000 RPM, but mine can only spin the prop to 7000 RPM.

    Am I still in the "break in" periode?

    The first 4 hours I was very gently, doing a textbook break in!
    The last 2 hours I have been on the throttle(full) for no more than 30 sec. at a time.
    It will go to 7000 RPM in no time.

    The ski is stock!

    Regards Morten

  2. #2
    xxx2's Avatar
    Join Date
    Oct 2006
    panama city bch, Fl
    It should gain RPM's as it breaks in, In stock form it supposed to make 160hp@7500rpm

  3. #3
    Sorry to piggy back, but we just rebuilt our 2001 Ultra 150. In break in period too... at quick bursts under WOT, it is around 6 to 6.5k, redline is 8k? Will this improve over time? Thanks.

  4. #4
    btldigger's Avatar
    Join Date
    Feb 2007
    lebanon tn.
    It should turn arround 7k depending on what your impeller you are running and how tight the pump is shimmed. You may see some gains as it breaks in.

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