KTM 640 Adventure owners, sign in please...

Discussion in 'Thumpers' started by creeper, Feb 20, 2004.

  1. bmwktmbill

    bmwktmbill Traveler

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    Jul 16, 2005
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    5,300
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    Traveler
    Steve,
    Have you changed plugs, I have had them fail causing problems like you describe.
    They are probably made in China now?

    Here's some go fast reading...

    http://www.bmw-m.net/techdata/cylinder.htm


    bill
  2. Aussie Steve

    Aussie Steve Long timer

    Joined:
    Apr 9, 2007
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    1,403
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    Maitland
    Bill,

    Actually got one on order.

    If I read the reason you have added the flow info correctly you are thinking it could be the cam kicking in at 5000rpm? Had a little experience owning cars with cranky cams and the way this changes bang on at 5000rpm regardless of throttle or load makes me think timing advance changes at that point, its also a crisp edge unlike a cam which ramps up a little slower.

    I agree that a faulty plug or cam timing out a bit would make this much more noticeable.
  3. jon6.0

    jon6.0 Been here awhile

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    Jun 7, 2008
    Oddometer:
    546
    Location:
    Phoenix
    Without knowing the cam specs I can't comment if its normal to have a hit at 5000 rpm. I can tell you that I have put different cams in my hot rod V8's over the years that had a lot of overlap and were poor to average performers at low rpm. They did have a noticeable hit in the upper rpms and absolutely screamed to redline. Sometimes if you actually dyno the vehicle you will notice the lower rpm power isn't that much different than before, but the new cam brings on the power so much harder up top you feel it in your butt dyno more.
  4. mgorman

    mgorman Crashing since 1964

    Joined:
    Oct 25, 2006
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    5,378
    Location:
    Massillon, Ohio
    Old man winter is lurking....


    [​IMG]
  5. bmwktmbill

    bmwktmbill Traveler

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    Steve,
    Actually I stuck it in just to show how complex tuning can be.
    Not sure what year your mc is, does it have the hi-flow head?
    As for the rally cam, my guess is that the factory riders just beat the engine and never let it under 5k rpm.

    It's an easy habit to get into, even with my stock machine, stock jets, modded exhaust it works best to run 4k+ for rpms.
    I think it's easier on the engine.

    If I was you with the rally cam I would open the exhaust system or find an Akrapovic. What carb are you using?
    bill
  6. AEsco48

    AEsco48 Adventurer

    Joined:
    Dec 3, 2007
    Oddometer:
    63
    Location:
    Cairo, Egypt
    Hello,

    This past weekend I was following the Pharaons Rally in Egypt and it appears when the fuel level in my tank gets low I dont get fuel to the carb.

    So I think the fuel pump is not working properly and the bike is working fine only when gravity is feeding fuel to the carb... Does anyone who what I should check, get fixed replace in the fuel pump?


    Here is what happen...
    The fuel was above the reserve point and I would be riding at a good speed and it would stutter or die, I would stop, move the bike side to side and then it would start up. Just like if I had run out of fuel. Switching to reserve did not help. Added fuel and it was perfect.

    Another time something similar happened where I emptied the tank to the reserve and it would sputter until i put more fuel... IOW the carb gets fuel only due to gravity and the fuel pump is not doing its job.
  7. AEsco48

    AEsco48 Adventurer

    Joined:
    Dec 3, 2007
    Oddometer:
    63
    Location:
    Cairo, Egypt
    Ok so it looks like I should get a rebuild kit for the fuel pump, but from the searches I am getting a lot of different model/part numbers.

    Is the pump: DF52-136 Outlets: 2 Flow: 31 Liters/Hour?

    Does anyone have the rebuild kit part number from Mikuni or a source where I can get it quick so I can sent it to egypt early next week?

  8. AEsco48

    AEsco48 Adventurer

    Joined:
    Dec 3, 2007
    Oddometer:
    63
    Location:
    Cairo, Egypt
    Hello!

    A few weeks ago I had the brushes on my starter replaced by a local mech here in Egypt and that part of the starter is working fine. But now I am getting a loud whining/turbine noise. The guys are saying its the bearings and or bushings...

    Can anyone confirm?... Are the bearings and or bushings are a simple slip off/on?
    Here is a video of what it sounds like.

    Video was right after i ran out of fuel (se above post...lol), that's why it did not start. Normally I just have to hit the starter for a split second and the bike fires up right away.

    http://youtu.be/rjISVTSAGYI

    Thanks

    Need to figure this out today so if i need to order any replacement parts I can have them shipped this week to a friend who can bring them to Egypt!!!
  9. bmwktmbill

    bmwktmbill Traveler

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    This thread...

    http://advrider.com/forums/showthread.php?t=154423


  10. Low594

    Low594 Adventuring Creep

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    Oct 28, 2008
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    Oakland, CA
  11. CSF

    CSF Been here awhile

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    Mar 12, 2012
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    167
    Location:
    Ontario, Canada
    Hey, when I do my winter tear down, I'm going to repaint the tank and fairing white and put back plastics on the back. I was working on some graphics for the front and I'd love some feedback. Just getting started but, what do ya think:

    [​IMG]

    Too much? Which one would you pick....
  12. jon6.0

    jon6.0 Been here awhile

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    Phoenix
    I like the top and bottom middle ones. Lower middle better than upper middle. That's my opinion though, which doesn't really matter since they are going on your bike. :lol3

    Which ones do you like?
  13. CSF

    CSF Been here awhile

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    Mar 12, 2012
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    Ontario, Canada
    I'm leaning towards top right...
  14. juames

    juames Have Fun, Don't Die!

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    Aug 16, 2008
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    2,560
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    Ottawa
    Heh those look nice! Are you planning on doing it in vinyl?

    I'm planning a paint job soon too, and thinking something kinda similar to the 990 Adventure R scheme...with graphics on the side of the fairing near the the signal lights.


    [​IMG]
  15. CSF

    CSF Been here awhile

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    167
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    Ontario, Canada

    Love that graphics scheme on the 990... nice and clean, not over done. Yea, I'm going to do it in vinyl, so if I really don't like it or if it gets damaged its easily replaced.
  16. B-Rod

    B-Rod RubberNecker

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    Jul 28, 2007
    Oddometer:
    2,017
    Location:
    Alberta
    I like the lower middle. I had black vinyl put on my mask to cover some holes, and I thought it looked very good, even plain black, but I would have loved something like the lower middle design.

    [​IMG]
  17. Gregidy

    Gregidy tallabanian

    Joined:
    May 13, 2009
    Oddometer:
    162
    Location:
    peterborough
    someone here must have run into this before. when I use my starter motor to start the bike a loud crashing noise is heard from auto de-comp or starter gears. bike runs fine when started I have set the valves in hopes that would help I also took the starter gear inspection cover off all looks well. If I kick start the bike I get the normal decompression clack and starts or if I use manual de-comp with starter and let it spin 2 times then release lever it starts no weird crashing sound. I am competent and can disassemble any parts needed just hoping to minimize the exploratory surgery :)
    Thanks in advance guys!!
  18. gunnerbuck

    gunnerbuck Island Hopper

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    Nov 19, 2005
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    4,441
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    N.V.I, B.C.
    The sound you hear is very likely your starter sprague clutch slipping on the drum... This thread may provide you with a simple remedy to repair your existing sprague, if the simple fix doesn't work you may have have to buy a new part: http://www.advrider.com/forums/showthread.php?t=222515
  19. Nokmuay

    Nokmuay Plan B Specialist

    Joined:
    Aug 10, 2007
    Oddometer:
    533
    Location:
    South Western Ontario, Canada

    I like the middle top and bottom, really cool idea.
  20. warewolf

    warewolf Tyre critic

    Joined:
    Oct 24, 2004
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    2,687
    Location:
    Nelson, New Zealand
    Lower left. I don't like the dripping lines off the lower continents,and I prefer the colour on the border rather than in the middle area.

    If you print extras, I'd seriously consider buying one! They're all good :clap