the DR650 thread

Discussion in 'Thumpers' started by sleepywombat, May 1, 2006.

  1. OsoADV

    OsoADV Oso

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    Thanks. Guess it'll have to wait until I have the Vapor installed one day so I can use the tach. Unless there is some other way to adjust idle speed to spec/below spec (by ear...)
  2. procycle

    procycle Long timer

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    That's not true. On a CV carb dyno run you won't really be running fully on the main jet until the motor is way up into the higher rpm range. Through the midrange it will be running on the needle/needle jet even though you have the throttle wide open.
  3. procycle

    procycle Long timer

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    By ear will work just fine.
  4. GISdood

    GISdood Been here awhile

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    Well, I'm going to play it safe and blame the previous owner for the early expiry of the valve seals then! :rofl

    I initially was going to just deglaze the cylinder with a scotchbrite pad, but I figured seeing as I was tearing the bike down and freshening up everything else, going half-assed on the heart of the beast just wouldn't do. I wound up taking it to a local engine rebuilder and had them put a nice light crosshatch into the cylinder wall for me.

    As for rejetting... definitely. After I had the base gasket issue resolved and the first set of new rings installed, I scored a lightly-used FMF Q2 from another DR owner over on the Yahoo DR650 group, then picked up a Dynojet kit from my local dealer. A few hours later, a bunch of plastic removed from the airbox, and many, MANY profanities uttered after stripping out those f%$#ing JIS screws from the float bowl, some dremel work to notch the screwheads for extraction and so on.... well, suffice to say I was happy to sacrifice a couple miles per gallon for the added throttle response and fun factor :D
    Thanks for the kind words... I'm glad to help! :beer
  5. Mercenary

    Mercenary Mindless Savage

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    Ok...so if I wanted (needed) to upgrade the springs in my front forks on my 08.....how do I go about doing that? Is it just a matter of unscrewing the top caps, removing any spacers, drain the oil, replace the springs,and then re-assemble?
  6. carcajou

    carcajou Resourceful Weasel

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    I appreciate that you participate in the forum. :clap:clap
  7. livetofly

    livetofly Adventurer

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    Rumlover and motolab,
    Thanks a lot for the informative responses. I have a much better idea of the carb and its adjustments on the DR650 now. As far as my DR goes I think I got the issue worked out now. When the PO installed the dynojet jet kit, he must have forgotten to remove the white plastic spacer that it says to take off in the instructions. This had the effect of making it run really rich. The rich situation was also compounded by an air filter caked with dirt (somehow the dealer didn't clean that when I took it in for an initial check up). So with those corrections done I just took it for a test ride and didn't notice any of the rough bogging down at low rpm like before. On a side note it was probably a clue that before it started even in the cold with no choke applied just fine, now that it's not running so rich the choke will probably have to be used as it should be on cold mornings.

    I love this thread, but think it's starting to take away from time I should be working on my studies :1drink
  8. TrophyHunter

    TrophyHunter Long timer

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    Lotsa variables for this answer. http://www.procycle.us/info/questions/dr650/suspension.html#both_ends PC has some good starting suggestions and was helpful during my chosen solution.
  9. motolab

    motolab Long timer

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    You are welcome!
    Good deal...
    I'm concerned where the needle clip sits if you remove the white spacer. Do they have you install a thinner washer of the same diameter as the spacer?

    Regards,

    Derek
  10. motolab

    motolab Long timer

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    You'll need to set the preload. This will tell you if you've got the right spring rate as well. If you are able to hit your laden sag target but not the unladen one (or vise-versa), the sprig rate is incorrect. Once the right rate springs are installed with a preload that facilitates hitting your laden and unladen sag targets, you need to set the oil levels. Wrap a zip tie around one of the fork tubes. Use it to check to see how much travel is being used during hard riding down hill on the brakes over bumps If more than 90-95% of the total travel is used, add a little oil (evenly of course) and try again. If less than 90-95% is used, subtract some oil (evenly of course) and try again. A fork oil level tool like the one from Motion Pro helps a bunch.

    Regards,

    Derek
  11. poppawheelie

    poppawheelie Been here awhile

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    Does the DR have a rev limiter, or is that just my carb running out of air when it goes "dut... dut... dut" at really high rpm? Sure sounds like a rev limiter.
    FMF big pipe, Kientech mid pipe, GXSR 1000 muffler, stock jet with needle shimmed up 1 mm, adjustable mix screw, snorkel removed.
  12. procycle

    procycle Long timer

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    The CDI stops the party at 7750 RPM
  13. NordieBoy

    NordieBoy Armature speller

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    Small washer under the clip. The needle is quite a bit shorter than the stock one.

    Attached Files:

  14. PHILinFRANCE

    PHILinFRANCE Long timer

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  15. LexTalionis

    LexTalionis Inciteful

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    Wednesday I read to page 5, post 80263 in one sitting. Very entertaining report, great pics and I love your dry British humor. Too bad the girls you gave up your room to didn’t give you a tumble.

    Good to see your DR is soldiering on with so little drama, just a cracked inline fuel filter as I recall. And your self-inflicted tube pinches, of course.

    But, the BMW (quoted from your RR):
    chain SNAPPED
    throttle cable was only held together by two threads
    the left hand side of the subframe had broken
    and shortly thereafter: the subframe snapped both sides

    And it was some Dakar-prepped bike? WTH? That guy didn’t bother to properly prep his bike, apparently. Not someone I’d care to leave civilization with. I recall an in-progress RR from one of your countrymen that I started Wednesday also, he bought a Honda XL600 to ride to Africa but, as I recall, discovered a worn-out chain and worn/cracked countershaft sprocket before leaving France. Some riders should stay home, for their own safety. However, their misfortunes on the road do make for interesting reading.

    Thank you for taking the time to post the RR, I'll be following along till the end.

    Lex
  16. Storz

    Storz Adventurer

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    How is the DR650 for long highway slogs? I am down to choosing between just a couple bikes and the DR650 is at the top of my list for all the reasons you guys know about, the thing is for me to get anywhere interesting on it I've got at least 2-3 hours on pavement and am just wondering if it's going to vibrate me to death. I had a DRZ400sm that I put quite a few road miles on and sometimes my hands would fall asleep lol.
  17. Rusty Rocket

    Rusty Rocket Life behind "Bars"

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    This thread is great. I learn about my bike and I pick up tips about using the Web. I did not know about that search method. Thanks.
  18. ShadyRascal

    ShadyRascal Master of None

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    Excellent post, saving that picture to my documents. :thumb
  19. Rumlover

    Rumlover Ed

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    Just a note On the pic that NordieBoy posted. Keep in mind the KTM needle is designed to also have a white spacer under it as well as a metal washer/shim, so in reality it should not hang lower below the slide then the stock one and the measurements/taper would show a greater difference compared to stock DR.

    Also I thought (but not sure) that the Dynojet needle hung down below the shelf at the bottom of the slide with the open end of the e-clip alongside the shelf/step (similar to the procycle needle), making the length below the slide a little closer then the pic would indicate.
    I know at one point the Kientech site talked about actually cutting the white spacer into a D shape so the spacer would sit alongside the shelf for the Dynojet needle (but I think they abandoned those instructions), so I am not sure what the current Dynojet instructions say.

    Thanks Nordie!
  20. exoff-roadgoat

    exoff-roadgoat Will ride for food

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    I ride a very smooth street bike, a PC800, and think my Dr also is very smooth. With the wind blast I wouldn't care to do 70 mph for hours on end but it will cruise along at that speed all day long. It even turns less RPMs than my PC and is also way faster. I have a gel seat so my buttocks get a little sore after a couple of hours which I think is a world record. :D