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  1. #1

    Down on RPM's Ultra 250x 07'

    I have this Ultra 250 that I have been working on,,, Mods:
    Riva full stage I kit,Ride plate ,intake grate,Exhaust,Intake,
    R&D 1 degree pump wedge,6 degree timing mod, I/C re route mod and The most RPM's I have seen is 7450-7500 max constant...long runs....I have checked hoses ,clamps pump bearing,oil level,excess silicone in housing, s/c bearings...still cant see how you guys running 7900-8000 with similar mods..Only thing I can think of is that here in Trinidad our salt water is very dense (salty) because I have 2 other 250X bone stock and the most RPM both do is 7200-7300.Any suggestions?


  2. #2
    Fat Man, Little Boat Region8Ultra250X's Avatar
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    have you checked for proper belt tension.... and are you running the correct plugs....

  3. #3
    the wotman likes boobs wotman's Avatar
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    Quote Originally Posted by legal import View Post
    I have this Ultra 250 that I have been working on,,, Mods:
    Riva full stage I kit,Ride plate ,intake grate,Exhaust,Intake,
    R&D 1 degree pump wedge,6 degree timing mod, I/C re route mod and The most RPM's I have seen is 7450-7500 max constant...long runs....I have checked hoses ,clamps pump bearing,oil level,excess silicone in housing, s/c bearings...still cant see how you guys running 7900-8000 with similar mods..Only thing I can think of is that here in Trinidad our salt water is very dense (salty) because I have 2 other 250X bone stock and the most RPM both do is 7200-7300.Any suggestions?
    Take it all back off.
    All those changes didn't do shit

  4. #4
    I usually run the PMR oem plugs but I am running the cr9iex now and the belt tension feels fine not slack or too tight.

  5. #5
    the wotman likes boobs wotman's Avatar
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    If the ski is behaving you should be getting 7750 bone stock.

  6. #6
    Please dont get me wrong No stock ultra 250 or 260 or any sho is beating me.. ski runs great but i see higher RPMS with my mods.and speed

  7. #7
    As i said before I have 2 other stock 250's and the rpms are 7250-7300 max so both cant be suffering from same things..

  8. #8
    the wotman likes boobs wotman's Avatar
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    Quote Originally Posted by legal import View Post
    Please dont get me wrong No stock ultra 250 or 260 or any sho is beating me.. ski runs great but i see higher RPMS with my mods.and speed
    are you shittin me at those rev's you must be getting smoked by everyone.

    Have you GPS'd your speeds?

  9. #9
    the wotman likes boobs wotman's Avatar
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    i rode a bone stock 07 250 and it pulls 7700 all the time.

    Maybe, weather related but I have never seen an ultra rev that low.

    I would love to know your gsp speed.

  10. #10
    I not kidding!!! do you think i am just posting shitt!!!!!! I have a friend with a ultra 260 and his max RPM's is 7500 and we are neck and neck and ontop i get the edge once or twice... I have to believe 3-4 ultras cant all be giving trouble... I have never seen or heard an ultra here in Tinidad running those RPMs you guys pulling..So I want to beleive its our temperature 31-32 degrees celcius and very very salty!!!!

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