Oz/Kiwi KTM 640 ADV riders sign in here please.

Discussion in 'Australia' started by overlandr, May 10, 2006.

  1. braaap!

    braaap! Long timer

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    Hi Chaps!

    640Adv... Would anybody have some jetting data for running with a full titanium exhaust system, with Akro silencer (ha) running with no Db killer?
    TIA!
  2. motolab

    motolab Long timer

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    What is meant by "(ha)"? What year is the bike, how many miles are the on it and what condition is the airbox in?

    Regards,

    Derek
  3. braaap!

    braaap! Long timer

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    Hi Derek! 'ha' means... calling an Akrapovic a 'silencer' is a bit of a joke :)
    The motor is a 2006 model year, with 53336kms on the odometer. The airbox is standard, the snorkel opening has not been enlarged.

    I'm currently running the bike with a standard exhaust pipe system plus an akrapovic (ha) silencer (no Db insert), open sided (ktm) mesh airbox screen, snorkel in.
    BST40 has been refreshed with a kit, new slide (undrilled), slide guide, emulsion tube, jets and needle etc. My jetting data is recorded somewhere in my piles of notes.
    I'll have to dig that out to ascertain a base line...

    regards,
    Alfons
  4. motolab

    motolab Long timer

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    Hello Alfons,

    If the silencer is not silencing, it probably could use a repacking. The Akrapovič muffler has enough packing volume to where it should not have to be too loud, and my experience with them bears this out. Big singles are very, very hard on muffler packings, so it may just be time.

    Recommended settings for your setup:

    Float height: 15.7 mm
    Pilot jet: 45
    Needle clip position: 4th from top
    Main jet: 157.5
    Fuel screw: Start the engine, let it warm up and ride the bike around until it's hot. Using the idle speed screw, adjust the idle speed to 1450-1500 rpm. Set the CO to 3-3.5 %. If gas analysis is not available: coming from the lean side, adjust the fuel screw so that the strongest idle is achieved. You will notice there is a threshold where it becomes rich enough (enough turns out) to run strongest, beyond which no change is noticed. Adjust the idle mixture screw ~1/8-1/4 turn out from this threshold. Adjust the idle speed back to 1450-1500 rpm (as it is likely to have changed). Leave the mixture to the leaner side of these settings if the bike will be seeing altitudes much higher than the one it was set at. Set to the richer side if you would like the engine to idle well earlier during warm up. For diagnostic purposes, report back with the resultant setting.

    Regards,

    Derek
    GodSilla likes this.
  5. braaap!

    braaap! Long timer

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    Derek, thankyou as always! you're responses and advice are so welcomed and respected.

    Yes, the big singles are hard on the muffler packing however... I recently rode my 950 (with single Akro) and my brother on the 640 on an 'adventure rider' school down here locally... Nobody winced.
    In fact, the school tutors / pupils made mention of how good both my V twin and the single sounded compared to the 'washing machine' noises the other standard bikes made :)

    Will report back as soon as my work affords me some quality shed time!
    Thanks again!!
  6. UncleGra

    UncleGra Road Grime

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    I re-pak my 625 with steel wool.
  7. motolab

    motolab Long timer

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    Sir, you're welcome!

    Regards,

    Derek
  8. GodSilla

    GodSilla I did that.

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    I just ordered a 320mm front disc from fleabay, $105, it has an orange centre so it must be alright. I woulda gone with torpedo7, but they are out of stock and double the price.
  9. dazza67

    dazza67 Been here awhile

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    Location:
    Collinsville,Qld,Australia
    They make a huge difference in stopping power
  10. GodSilla

    GodSilla I did that.

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    Mine comes with 320mm standard eh, the 2003 was a single-disc model, 2004-onwards had twin 270mm discs. I am expecting a large increase in retardation from putting it onto a 17" front wheel though.:evil
  11. rowie

    rowie Been here awhile

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    Proserpine, QLD
    Details please :hmmmmm:D
  12. UncleGra

    UncleGra Road Grime

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    Buy a packet of steel wool in a roll..pull the muffler apart and wrap the wool around the thingy...however much you reckon and seal it all back up with rivets and roof and gutter silicone sealer. Cheap easy and it works.
  13. Out6ack

    Out6ack Whale Rider

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    Lake Macquarie, Newcastle.
    And if you buy the stuff with soap on it it'll also smell nice..:toney
  14. GodSilla

    GodSilla I did that.

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    We should change your tag to "Bubbles".:rofl

    Steel wool eh? I thought it burned out too quickly. Is fibreglass a better option? I know it used to see a lot of use in the past, racing 2-strokes and so on.
  15. dazza67

    dazza67 Been here awhile

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    Anyone chasing a recluse clutch??
    20180607_181300.jpg
    Jabba600 likes this.
  16. UncleGra

    UncleGra Road Grime

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    Maybe the smoke kept it fresh..I think the original stuff might be fibre glass.
  17. GodSilla

    GodSilla I did that.

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    Got my motard wheels home.:clapI've gotta get a couple of bits'n'bobs before I fit them up, like different disc bolts (KTM ones are flat, this uses countersunk .....).

    Inmate tileman gave me a link to a way to convert the spoked wheels to tubeless too, that's a new thing to me.

    I think I'm gonna need a steering damper too, the front will drop far enough to be almost GP-style geometry.

    And sprockets. It came with 2, but the front one won't fit a 2003 model and the rear is a 45 tooth, making the bike even slower than the 42 that's on there. I'll start with a 17 front and work from there after the first ride to gauge the ratios. The chain blocks have that one link adjustment left in them, luckily.:D

    I took a ride to get the newspapers this morning, as usual, and it just reminds me of how much I love this bike. :raabia 625cc LC4's rule.
  18. enookway

    enookway Are we having fun yet?

    Joined:
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    Oddometer:
    667
    Location:
    Leeton NSW
    Steering damper may not help. Last time I got my shock serviced I got the travel spacer removed as we thought the bike had been lowered. This raised the arse end about 30mm and introduced a slow weave on gravel. Handled OK on all other surfaces and didn't headshake, but was uncomfortably high and the sidestand was now way too short.
    So I'm currently getting it set back to standard length (412mm). It was 420mm with no spacers. Not sure if this is the 620SC standard length?

    Anyway, the 3 lengths shown below for SXC, Adventure (and 640 Enduro), and the SMC on the right.


    KTM Shock 1.png KTM Shock 2.png KTM Shock 3.png

    Although if your changing wheels between Motard and Enduro you wont want to be changing shock lengths as well.
  19. enookway

    enookway Are we having fun yet?

    Joined:
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    Big spuds awards for the Long weekend.

    Not one but TWO LC4's entered Finke.
    625 finished 447th out of 600. Total time of 8.5 hrs
    640 DNF'd just short of Finke on Day 1

    Pretty good effort considering the conditions.
  20. tracka

    tracka n00b

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    7
    Gday my 640 seems to be starving for fuel after about half throttle. It just starting doing it on the last ride it's got the bst 40 carb on it. I'm going to pull the carby down. What should I be looking for and we're is the best place to get parts. Cheers Steve