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  1. #1
    elviswongg's Avatar
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    Timing advanced question on 250x

    Hello

    As read almost all the post concerning the timing advance mod,

    I would like to ask you ?

    Is it thrue that engine will run hotter with this mod so it will be good for gio probleme ?

    And what speed or acceleration can i expect with pump gaz 91 octane

    Thank you


  2. #2
    JET250's Avatar
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    may or may not help gio. the heat cure on the 260 was from other changes as well as timing.
    acceleration will be noticable, but numbers vary boat to boat. don't do more than 6 deg if you do the pulley mod no more than 4.

  3. #3
    Exhuast temps went down with the timing mod. Dont be fooled though the combustion happens faster and more heat is absorbed within the cylinder.

    More fuel burned with advanced timing too. So what we see as a drop in exhuast temps just means less burned fuel in exhuast but higher core temps. Still it wont fix GIO.

  4. #4
    Did the timing mod on my new 250X -08 will run it in this weekend
    I did go a bit to long thou as the timing wheel was opened 1.35-1.42mm is this OK for a otherwise stock ultra?

  5. #5
    JET250's Avatar
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    going on 1.42 too much.......start again. you want a mickey whisker short of 1mm

  6. #6
    shit, as we dont have any more timingwheels and want to drive this weekend.... anything we can do to be able to drive this weekend (maybe just turn it back to stock)?

  7. #7
    nicjak's Avatar
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    Quote Originally Posted by ec1 View Post
    shit, as we dont have any more timingwheels and want to drive this weekend.... anything we can do to be able to drive this weekend (maybe just turn it back to stock)?
    just turn it back anticlockwise if you are worried

  8. #8
    Take the time to smile sirbreaksalot's Avatar
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    Quote Originally Posted by ec1 View Post
    shit, as we dont have any more timingwheels and want to drive this weekend.... anything we can do to be able to drive this weekend (maybe just turn it back to stock)?
    put a small spot if mig weld and refile it

  9. #9
    ceasar's Avatar
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    Hmmm....

    If 1mm is 6 degrees, shouldn´t the following be right?:

    1mm = 6 degrees
    1,5 mm = 9 degrees
    2 mm = 12 degrees

    Then it should mean that with 1,4mm you should get ~ 8,4 degress which is ok?

    Am I doing the math right?

  10. #10
    Silence! I Keel You! earthshaker's Avatar
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    Does the 260X wheel fit the '08 - '07's???? or is the advance on the 260X performed in a different manner?

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