2017 EXC 2 Stroke Jetting (Mikuni TMX)

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Thread: 2017 EXC 2 Stroke Jetting (Mikuni TMX)

  1. #1
    The "Moto" steveman's Avatar
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    2017 EXC 2 Stroke Jetting (Mikuni TMX)

    It would be great if you could post your personal Mikuni carb set up including jet sizes, needles, clip positions, float height, airscrew etc. and how your bike runs/behaves with your set up.

    Its also useful if you add the altitude you took as reference and maybe the temperature. And of course which bike you have....

    Having an own thread about jetting the 2017 smokers makes it easier to find the required information. Hope you agree

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  3. #2
    The "Moto" ktm450awyeah's Avatar
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    Needle 43/73 as 2 turns clip 2 pilot 40 main 450 mix 60-1 exol oil
    Altitude sea level
    Float height factory set
    temps 10-25 very strong clean and right on the money fuel economy excellent
    82 Rm 125 83 Rm 250 84 Cr 500 88 Rm 250 89 Cr 250 91 Cr 250 98 kx 250 99 kx 250 2000 Cr 250 2001 Yz 250 2002 ktm 200 2003 ktm 200 2004 ktm 450 2006 ktm 450 2008 ktm 450 2009 husaberg Fi 450 2013 husaberg 300 now N8RH needle clip 2 with .2mm shim 168 main 38 pilot AS 1.5 turns out[ 2015 ktm 300 N8RG needle clip 2 38 pilot 170 main AS 1.75 out 2016 300 N8RG needle clip 2 40 pilot 170 main AS 1.75 out
    [2017 300 needle 43-74. Clip 2 .1shim pilot 45 main 460 crisp and sweet[

  4. #3
    The "Moto" Pindie's Avatar
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    Is it worth people saying what 2t oil they are using to? I know it sounds daft but my 200 runs differently on Motorex compared to Exol compared to Saber 100:1 (will try this again but need a jet tweak). It runs fine on all but some are cleaner than others and you can feel a difference.
    This is all I can see when I open the throttle:

    Before https://www.youtube.com/watch?v=UWMWXJvX8e4

    After https://youtu.be/VtBLqkh5u8k

    Keep out the way!

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  6. #4
    The "Moto" unicycler's Avatar
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    Needle 43/73 as 2 turns clip 2 pilot 40 main 450 mix 50-1 motorex oil
    Altitude sea level
    Float height factory set

  7. #5
    The "Moto" unicycler's Avatar
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    brass one 2 turns out oatesy
    oatesy32 likes this.

  8. #6
    Junior Moto
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    Think the manual has then listed the wrong way round, if my reading is correct lol

  9. #7
    The "Moto" ktm450awyeah's Avatar
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    I bet your As has been turned in. That bike should be sweet
    82 Rm 125 83 Rm 250 84 Cr 500 88 Rm 250 89 Cr 250 91 Cr 250 98 kx 250 99 kx 250 2000 Cr 250 2001 Yz 250 2002 ktm 200 2003 ktm 200 2004 ktm 450 2006 ktm 450 2008 ktm 450 2009 husaberg Fi 450 2013 husaberg 300 now N8RH needle clip 2 with .2mm shim 168 main 38 pilot AS 1.5 turns out[ 2015 ktm 300 N8RG needle clip 2 38 pilot 170 main AS 1.75 out 2016 300 N8RG needle clip 2 40 pilot 170 main AS 1.75 out
    [2017 300 needle 43-74. Clip 2 .1shim pilot 45 main 460 crisp and sweet[

  10. #8
    The "Moto" stumo's Avatar
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    Quote Originally Posted by oatesy32 View Post
    Just checking, the silver screw on carb now is the air screw and not the little brass one, correct? Sure was the other way round on old carbs
    No, it's the other way round

    silver is tickover, little brass is AS
    13 250exc, 14xc head, 38pilot, n8rh clip2 with 0.2mm shim, 168 main.... '17 300 exc, 42.5pilot, 450 main, 43-73 needle, clip2 with a 0.1mm shim.......shims from Vario-helicopters UK, 90840 is 0.3mm, 90830 is 0.2mm and 90820 is 0.1mm
    Picnic? I prefer KFC; A bit of leg, a bit of breast, and a greasy box to put your bone in.

  11. #9
    The "Moto" ktm450awyeah's Avatar
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    No wonder it's smoking it's ass off
    Taffymoto22 likes this.
    82 Rm 125 83 Rm 250 84 Cr 500 88 Rm 250 89 Cr 250 91 Cr 250 98 kx 250 99 kx 250 2000 Cr 250 2001 Yz 250 2002 ktm 200 2003 ktm 200 2004 ktm 450 2006 ktm 450 2008 ktm 450 2009 husaberg Fi 450 2013 husaberg 300 now N8RH needle clip 2 with .2mm shim 168 main 38 pilot AS 1.5 turns out[ 2015 ktm 300 N8RG needle clip 2 38 pilot 170 main AS 1.75 out 2016 300 N8RG needle clip 2 40 pilot 170 main AS 1.75 out
    [2017 300 needle 43-74. Clip 2 .1shim pilot 45 main 460 crisp and sweet[

  12. #10
    The "Moto" stumo's Avatar
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    Quote Originally Posted by ktm450awyeah View Post
    No wonder it's smoking it's ass off
    That's what i was thinking no wonder it's running shit

    mine is jetted the same as Ozzy and it frikkin rips. 55ish:1 on Putoline mx5

    Needle 43/73 as 2 turns clip 2 pilot 40 main 450, no idea on AS but started at 2 and it's prob around 1.25-1.5 at a guess
    13 250exc, 14xc head, 38pilot, n8rh clip2 with 0.2mm shim, 168 main.... '17 300 exc, 42.5pilot, 450 main, 43-73 needle, clip2 with a 0.1mm shim.......shims from Vario-helicopters UK, 90840 is 0.3mm, 90830 is 0.2mm and 90820 is 0.1mm
    Picnic? I prefer KFC; A bit of leg, a bit of breast, and a greasy box to put your bone in.

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