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  1. #1

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    timing mode ultra 250

    hi all just want to get feed back on every 1 who has done the timing mod on ultra 250 what max rpm you got lv been playing with timing and iv got around 7880 to 7920rpm at the moment with 4degs from stock any feed back would be great....


  2. #2
    Take the time to smile sirbreaksalot's Avatar
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    Quote Originally Posted by dobbo View Post
    hi all just want to get feed back on every 1 who has done the timing mod on ultra 250 what max rpm you got lv been playing with timing and iv got around 7880 to 7920rpm at the moment with 4degs from stock any feed back would be great....
    what year 250.......?
    my ultra has had 7+ for just shy of 3 years.........
    and have been running a 1-1 for the last 40hrs on same setup, Max Rpm 8300
    But i suggest 6 to be safe = approx 200rpm

    Waz

  3. #3
    nicjak's Avatar
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    how have you measured your timing?

  4. #4
    jmatak9's Avatar
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    I got 6* of timing, going on 2 years and added pulley 6 months ago. I did mine the way JW shows it on the 250Xtech site. I would say I got somewhere between 75 and 100 more rpm out of the timing.
    Last edited by jmatak9; 08-16-2010 at 10:43 AM. Reason: left out rpm info

  5. #5

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    my engine is out of the ski and would like to know how I can check my timing.

  6. #6
    nicjak's Avatar
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    to hard to explain its all in the manual, basically no.1 top dead (crankshaft timing locator pin ontop of shaft) (timing gear mark to side of split in crank case) line cam gear markings up on top of head confirm by counting the link pins 31? from memory but maybe wrong. if you have a slotted wheel you need it back to stock to set correct timing. i think skip had pictures on his site.

    Quote Originally Posted by KawaHead View Post
    my engine is out of the ski and would like to know how I can check my timing.

  7. #7

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    cant seem to find it in my 08 manual .. just following skips specs on timing mods.. hope it comes up ok .

  8. #8
    nicjak's Avatar
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    it will be in engine top end section (workshop manual) not small owners manual.

    Quote Originally Posted by KawaHead View Post
    cant seem to find it in my 08 manual .. just following skips specs on timing mods.. hope it comes up ok .

  9. #9

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    hi sirbreaksalot it in 08 ski stand pulley 11pound of boost l just had ski shop plug into the ecu today lv got 4degs advance payed ski shop to do it. l want to up it to 6 l just want to know what top rpm every 1 is getting lam looking into putting more timing l always run 98octain. dose 1-1 pully make a big diffrence in power l have done mods l have done, ic re root with another fitting at the jet pump going through another fitting in the hull to ic and exiting the pisser on the side of ski l put a custom 3in exhaust noticed a diffrence in throttle responce finally got prop sorted got a 12-19pitch great bottom end lost 1mph top end gps,2010 pump shaft with nut,took revs bucket off that has given me proboms from day 1. any other mods u know off than keeps it safe......

  10. #10
    nicjak's Avatar
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    waz lives just around the corner im sure he has a shed full of mods. pay him a visit

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