H2W Jetting Matrix

Discussion in 'Crazy-Awesome almost Dakar racers (950/990cc)' started by Head2Wind, Oct 9, 2007.

  1. UngaWunga

    UngaWunga Mosquito bait

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    Jan 7, 2005
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    10,043
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    NH

    Filter is clean and carbs are synced. I haven't checked the float heights. What's the stock height?

    I figured the starting behavior might be too lean, but looking at the jetting spreadsheet, it might be too right with the 45 pilots. I'll see if I can pick up some 42's to give a shot.

    I wanted to try to go up in main jet size to see if it fixes the flat full throttle + high rpm.
  2. mousitsas

    mousitsas Long timer

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    How do you jetting sensei find the idea of using the H2W jetting with 2 differences:
    1) DNA filter in place of the stock (prefilter in place)
    2) stock mains (or otherwise) instead of the smaller H2W mains.

    The aim is to keep the nice low-mid of the H2W setup with a bit more oomph higher up. I also happen to already have a DNA so it is a no brainer in terms of expense.

    :ear
  3. jmanpt

    jmanpt n00b

    Joined:
    Nov 30, 2012
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    2
    Hi, I ordered the CPR intake and jetting kit from ADV machines and installed these two items. I also did a little port work while I was at it and made a 2 into 1 exhaust. My bike almost wont start up now. If I put the choke on full. It will idle most of the time. If I touch the throttle it will die instantly. The bike will not start without the choke on full. It seems to me I am very lean and need a bigger pilot?? Is there a source to just buy the jets I need without buying a kit like I already have??? If so, please post a source. Spring will be here in less than 2 weeks and I want to ride.

    After letting the bike fully warm with the choke on full I managed to get it to halfway run and took it for a ride. I had to start it every time I came to a stop, which wasn't easy. Off idle it is awful. If I can get the bike into the upper midrange it will run. The transition from low rpms to higher rpms is terrible. At wot in the upper rpm's it ran decent. I need a source for parts for this carb. It appears like everything else on this bike, (chain, fuel pump, carb) the jets might be special unto this bike and has been discontinued. Any info appreciated. Especially where I can get jets. Thanks
  4. gefr

    gefr Life is a trip

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  5. Head2Wind

    Head2Wind MotorcycleMayhem

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    Hello jmanpt,

    If you are having issues, you can contact me with the email address that came with the kit. I am more than willing to help you work on resolving the problem that you are having.
  6. jmanpt

    jmanpt n00b

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    I couldn't figure out how to message you directly but my email address is jmanpt@iland.net I would really appreciate your help and will gladly pay. I want to ride!!!!!!!!!!!!!!!!!!!!!

  7. Head2Wind

    Head2Wind MotorcycleMayhem

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  8. Marc Lenssen

    Marc Lenssen Adventurer

    Joined:
    Nov 9, 2012
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    Hi Guys,

    2004 950 here, Wings exhausts with drilled out silencers, DNA filter, standard snorkel and one sommer door. Elevation 0 (Netherlands, so actually slighly below). Is raising the needles by 1 position enough for her? Or should I go for changing some of the jets? I need a few starts with choke now before she catches, once she runs no issues at all with idle but she runs a bit rough and I have the feelng she is low on power. She runs cleanest above 7000rpm. This is my forst 950 so I am not sure exactly on how she could run.
    Any suggestions on jet sizes and fuelling settings?

    Thanks,
    Marc
  9. mousitsas

    mousitsas Long timer

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    DNA will require at least 165/170 mains even without sommers doors. My SE without doors, DNA and 160/165 is running lean. Stock mains are 155/160. With 160/165 mains, it runs very well with open doors and stock filter. So, in other words, you are extremely lean on top! Put the needles in 3rd position also (raise them one notch from stock).
  10. teambft

    teambft teambft

    Joined:
    Feb 19, 2009
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    1,191
    Location:
    Brentwood, TN
    Looking for some assistance and a "new" starting point. Thanks for any advice:
    2005 KTM 950 ADV
    500-1000 ft elevation
    Currently 80-90 degrees temps and, of course, humid
    Stock ignition


    • Performed OC Wisdom SAS/cannisterectomy removal
    • Installed D&D pipes
    • Rejetted carb with Pro Factory kit
    • 168/165 mains, needle 3rd clip (small washer on bottom, large on top), 3mm float height, 45 mains and 2-2.25 turns on the mix screws. (These settings were initially recommended by a vendor)
    • Sportingwood's intake and ITG foam filter; removes airbox entirely
    • Performed flappendectomy
    • Installed Alternate Cycle vacuum fuel pump - using front left manifold outlet to run the vacuum pump. All others are plugged.
    • Coil/spark plug wires are seated all the way down
    • Fresh fuel and inline fuel filter
    • New NGK Iridium spark plugs
    • Used Flowmeter to check synch on carbs 10.5 hg
    • TPS output is about .58 volts
    • Still running crappy - hanging idle (lean?) but hangs longer than what a lean condition would indicate after blipping the throttle. I set it about 1400-1500, it jumps to 2000-2100. And if I adjust the idle back down to compensate, idle will drop down low to 1000 RPMs (and sometimes stall)
    • 5k RPM to 7k RPM gap/stumble/bog when warmed up; bike feels rich, not crisp on throttle
    [FONT=&quot]Found slight digs/marks in upper level of front carb boot - new one on order, but have sealed off temporarily with grease/silicone to ensure no leak and the scrapes are very small and further above the sealing point of the carb to intake.....but may still be an issue.[/FONT]
  11. gefr

    gefr Life is a trip

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    You need larger main jets. Follow discussions on sportinwood's vendor's thread.
    Cheers
  12. teambft

    teambft teambft

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    Yep - I installed them last night. Bike is now smooth thru the power band.
    Maybe slightly rich. But MUCH better. I need to reconfirm my float settings and mix screws.