KTM 640 Adventure owners, sign in please...

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

  1. Dirty3

    Dirty3 Just add sauce

    Joined:
    Oct 11, 2011
    Oddometer:
    168
    Location:
    Melbourne SE Burbs
    I've only had mine just on 3 months now and loving it. So far only day trips with tar and a bit of dirt roads. I try to get out every weekend for a few hours and sometimes longer. Summers coming up, so off we go :wings
    <a href="http://s833.photobucket.com/user/TheNgr123/media/IMG_0917_zps7fe7bd08.jpg.html" target="_blank"><img src="http://i833.photobucket.com/albums/zz258/TheNgr123/IMG_0917_zps7fe7bd08.jpg" border="0" alt="Acheron River between Marysville &amp; Warburton photo IMG_0917_zps7fe7bd08.jpg"/></a>
  2. gunnerbuck

    gunnerbuck Island Hopper

    Joined:
    Nov 19, 2005
    Oddometer:
    4,430
    Location:
    N.V.I, B.C.
    The Dual outlet pump is not the same inside as the oem pump... The oem has a spring valve inside as to where the 2 outlet pump does not... I believe the 2 outlet pump puts out more pressure and will overwhelm the float valve in the carb... I believe you could make it work if you ran one pump outlet into the carb and the other as a bypass back into the tank by T'ing it into the crossover line...
  3. Duke78

    Duke78 Been here awhile

    Joined:
    Nov 12, 2009
    Oddometer:
    127
    Location:
    Granada
    Serious Picture :clap
  4. Baja Dad

    Baja Dad Long timer

    Joined:
    Jan 3, 2011
    Oddometer:
    2,051
    Location:
    Norco California
    I do

    send me a PM
  5. KTM640Dakar

    KTM640Dakar Motorsick

    Joined:
    Nov 23, 2004
    Oddometer:
    2,138
    Location:
    Oxbow Lake
  6. meat popsicle

    meat popsicle Ignostic

    Joined:
    Feb 9, 2004
    Oddometer:
    14,263
    Location:
    Circumlocution Office of Little Dorrit
    Still, shouldn't the float needle seat and seal regardless of the fuel pressure? More fuel pressure would just mean more closing pressure on the float valve.

    You're probably right, but it might not hurt to try a new float needle just in case the current one is worn.

    http://www.advrider.com/forums/showthread.php?t=347184
  7. supercoyote

    supercoyote Adventurer

    Joined:
    Jun 28, 2012
    Oddometer:
    98
    Location:
    Edmonton, AB
    Anyone know if this exhaust would work as a replacement for the OEM supertrapp?
    [​IMG]
  8. meat popsicle

    meat popsicle Ignostic

    Joined:
    Feb 9, 2004
    Oddometer:
    14,263
    Location:
    Circumlocution Office of Little Dorrit
    You should check the Part Number in the online parts retailer's system and see if it works with your bike, or call them and ask, but "racing" means loud usually, so don't expect it to be pleasant. I had a racing muffler for too many years, but when a good deal on a Staintune popped up I JUMPED on it.

    Now with adequate back-pressure the engine probably breathes properly - remember the airbox/carb and the exhaust balance one another - my bike seems to be running much better and I got almost 48mpg on the last trip.

    I'd throw eliminating the dreaded BST-bog in the list of amazing benefits of having a quieter pipe but people need to know that the bog is carb maintenance related, and once you go quiet - no more augmenting to cover up any male insecurities... you never go back.
  9. gunnerbuck

    gunnerbuck Island Hopper

    Joined:
    Nov 19, 2005
    Oddometer:
    4,430
    Location:
    N.V.I, B.C.
    The muffler pictured is for a right side exhaust, the 640 exits on the left...

    You could make it work with some welding fabrication to get it to tie into the slip on part of the supertrapp... This would mean destroying the stock pipe giving you no spare... You would be better off to buy the SXC muffler that is being offered here for a slip on fit:http://advrider.com/forums/showthread.php?t=932553
  10. Dolly Sod

    Dolly Sod Red Clay Halo

    Joined:
    Aug 18, 2003
    Oddometer:
    14,072
    Location:
    Richmond, Va
    So, what is your final airbox configuration with the staintune?
  11. meat popsicle

    meat popsicle Ignostic

    Joined:
    Feb 9, 2004
    Oddometer:
    14,263
    Location:
    Circumlocution Office of Little Dorrit
    Creeper's v.1 custom side airbox cover, which basically has the same opening as the KTM part. Snorkle in place as recommended by Sommer.

    BST40 has the stock pilot, stock needle jet, and a 160 main (I believe). I ride mostly at or about MSL, but haven't found any problems climbing to 10,000ft in the recent past without adjustments.

    Pipe is KTM stock; can is Staintune's oval.
  12. mgorman

    mgorman Crashing since 1964

    Joined:
    Oct 25, 2006
    Oddometer:
    5,376
    Location:
    Massillon, Ohio
    As mentioned, it is the wrong side, but if it is marked spark arrestor on the back side, it will be fairly quiet. That style is what has come on the thumpers for the past 6 years, with or without a spark arrestor pending model. I just put one from a W model with an arrester on my 350XCF and it cut the noise down significantly over the stocker without the arrestor.

    The bad part for you will be the tab locations, they'd be outboard on the left.
  13. Dirtstar1

    Dirtstar1 Human torpedo

    Joined:
    Dec 9, 2010
    Oddometer:
    121
    Location:
    Almost mexico I.B.
    <a href="http://s29.photobucket.com/albums/c285/dirtstar1/?action=view&current=null_zps30d514a6.jpg" target="_blank"><img src="http://i29.photobucket.com/albums/c285/dirtstar1/null_zps30d514a6.jpg" border="0" alt="Photobucket Pictures, Images and Photos" /></a>

    Baja California
  14. bmwktmbill

    bmwktmbill Traveler

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    Jul 16, 2005
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    5,284
    Location:
    Traveler
    Where in the Baja?

    b
  15. Hurley959

    Hurley959 Adventurer

    Joined:
    Mar 21, 2011
    Oddometer:
    58
    Location:
    Orlando, FL
    Has anyone come up with the size of a proper replacement O-ring for the hydraulic slave cylinder? Mine is leaking down and I imagine it's the culprit.
  16. dnrobertson

    dnrobertson Big Bike, Slow Rider

    Joined:
    Jun 30, 2008
    Oddometer:
    857
    Location:
    Frankston, Australia
    I've had the best success with just using the same O-ring as used behind the countershaft sprocket.

    O-RING 25,00X2,00 SILICONE Part Nbr: 0770250021
  17. Falcon Rust

    Falcon Rust Adventurer

    Joined:
    Jun 13, 2006
    Oddometer:
    96
    Location:
    Brisbane, QLD
    talked to a mechanic a couple of weeks ago and he suggested that changing the piston, could really improve the vibrations and relax the engine. as anyone done that?
  18. skibum69

    skibum69 slave to gravity

    Joined:
    May 14, 2006
    Oddometer:
    5,625
    Location:
    New Melbourne, Newfoundland
    I just did the same fix on my master cylinder with the same one as my countershaft sprocket and both seem to have stopped leaking so far.
  19. Dirtstar1

    Dirtstar1 Human torpedo

    Joined:
    Dec 9, 2010
    Oddometer:
    121
    Location:
    Almost mexico I.B.
    Erendira, at coyote cal's hostel. From there we head north for 70 or so miles of fast dirt roads along the bluffs on the water. Next place I want to go is south from there all the way to san quintin.
  20. hajoktejnSI

    hajoktejnSI Adventurer

    Joined:
    Nov 13, 2013
    Oddometer:
    78
    Location:
    Ljubljana Slovenia
    Hello from an over debt country that used to be a nice place to live in - Slovenia.
    A month ago I bought myself an KTM Lc4 adventure 640, 2000. It's completely stock, has 30.000 km ( I guess ...), everything but the tripmaster resetting itself seems to be working fine. The suspension of this bike is remarkable. Smooth over bumbs, yet soft enough not to break my spine over rough terrain. Well that's it for now.
    [​IMG][/IMG]