the DR650 thread

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

  1. alonzo

    alonzo Misadventurer

    Joined:
    May 28, 2007
    Oddometer:
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    Northwest Ozarks
    Perhaps you mean 520 conversion. Stock chain is 525 (pre `96 bikes may be 520.) Some folks convert to 520 because of the greater sprocket choice.

    -- alonzo
  2. Rumlover

    Rumlover Ed

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    Sep 2, 2010
    Oddometer:
    707
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    Utah
    Why not try adding a little oil, maybe in 1/4" increments. That isn't discussed much, but it should help resist bottoming and seems like the simplest thing to try first.
    Do a google search on the benefits (and pitfalls). Kind of interesting.
    I thought someone once said that jesse (of Kientech) recommended a little higher level then stock.
  3. Stringer99

    Stringer99 Banned

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    thanks for the torque wrench ideas, much appreciated. turns out i will need them! :D

    has any1 had their oil witness glass leak? i assume its a faulty o-ring? i also have the head gasket leaking ... could this help contribute to severe oil darkening? back from 200 mile trip, new oil and filter just before i left. cannot see metal button in witness window oil is so dark (even when you wipe away the leaking oil), i just don't think it's normal. had this bike 1000 miles, changed oil and filter 4 or 5 times.

    and its sputtering only at idle again, which stinks. takes eternity to come off choke, difficult cold starts, and crappy mileage. i have cleaned everything that can be cleaned in carb thoroughly, 4 or 5 times. every filter on bike is new. have the garden variety airbox mod, jet kit, and exhaust upgrade. bike had same issues before any mod, though bike had aftermarket adjustable jet needle and allen float bowl screws when purchased. Should I try a size 45 pilot maybe? I am out of ideas. :hack
  4. motolab

    motolab Long timer

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    What are your laden and unladen sag percentages (of total travel)? Having a look at those will give you an idea of both whether more prelead is a good idea or not, as well as (more importantly) whether the spring rate is correct. If the forks bottom when the spring rate and preload are known to be correct, increase the oil level.

    Regards,

    Derek
  5. motolab

    motolab Long timer

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    Does the problem at idle happen intermittently, or does it happen consistently?

    Regards,

    Derek
  6. Stringer99

    Stringer99 Banned

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    consistantly, much worse when cold. occasionally it smoothes out when warmed up, but then it will start to hiccup, stutter, and sometimes shut off.
  7. goodcat8

    goodcat8 I can pass this guy.....

    Joined:
    Feb 19, 2008
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    Los Angeles
    ^^^ Fuel starvation maybe? :dunno

    Did you check that little tiny screen off the carb? Even 2 trips to the dealer had them baffled too. That little bastard made me go nuts until I tracked it down and found crap in it.
  8. motolab

    motolab Long timer

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    I think someone has set the float height way too high in an effort to keep it from overflowing. This strategy may be successful, but at the cost of the fuel level being far too low most of the time (except when the float valve decides to leak anyway). Using a float setting tool check to see if the float height is 14.7mm. If it is far more, or if the tang looks like it's bent at some strange angle, disassemble the float cage and inspect the float needle under magnification. You are likely to find evidence of a witness line where the conical tip has been contacting the seat. If so, needle should be replaced. Then set the float height to 14.7mm. After that, you will have to adjust the idle mixture.

    Regards,

    Derek
  9. Stringer99

    Stringer99 Banned

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    yes i replaced it with a new one. thanks though.
  10. Stringer99

    Stringer99 Banned

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    i did check the float height the best i could, using the bst bible. i made sure the two lines were parallel. the tab has a slight bend to it. i did notice that on my carb, when turned upside-down, the float pretty much retains the exact same parallel position and the float doesn't drop into the bowl like the photos in the bst bible. thanks.
  11. Kommando

    Kommando Long timer

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    I don't know if this would have anything to do with your idling problem, but have you had a chance to check your valves since getting the bike? It might help with the hard starting.
  12. Stringer99

    Stringer99 Banned

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    no not yet. 4700 miles on the odo. what special tools if any does that require? thanks.
  13. eakins

    eakins Butler Maps

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    Location:
    Fort Collins, Colorado
    what silver touch up paint (small bottle style w/ brush) is the closest to the silver frame? i'm going to get some sent to a friend who will bring it to me in december. no biggy if it's not exact match as my bike is from from a trailer queen.

    thnx!
  14. eakins

    eakins Butler Maps

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  15. larry31

    larry31 Back Roads Explorer

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    Mar 24, 2011
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    New Hampshire
    TrophyHunter & JagLite
    Thanks for the links. Lots to check out, and I will.
    <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:eek:ffice:eek:ffice" /><o:p></o:p>
    Mr. B
    Appreciate your input on cost. Will check around on pricing, but not much showing near home at present.
    <o:p></o:p>
    Kommando
    Thanks for a very detailed comparison. Answered some questions I had.
    <o:p></o:p>
    Jon_l
    Thanks also.
    I would, most likely, use 60/40 dual purpose threads.
    I ride a NX250 with TW’s and when they are new to half worn, work ok for me.
    ( The NX250 is very limited in tire choices, unless changing the wheel to different size, which I don’t want to do.)
    <o:p></o:p>
    I just put on a Duro on rear. ( slightly larger than stock tire.)
    Seems to be a little better than the TW’s. ( Not sure but thread seems a little deeper then what I remember the new TW having.)
    <o:p></o:p>
    I’d like to sell my 1989 NX250 before I get another bike. Shooting for keeping my 1990 NX250 and picking up a 650.
  16. basketcase

    basketcase lifelong reject fixer

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    From the nearby O'Reillys, I used this one:

    Dupli-Color Perfect Match
    BFM0360 Dark Shadow Gray (CX)

    Underneath the color code noted above it says "replaces T299"

    It dried in to a seamless match after I had a touch up weld done on the left side rack mount. It is, I think, from where the stock grab rails were removed. Anyway, it's where the Happy Trail racks bolt up now.

    I have it in a spray can but most of this is also available in the small bottle type application you mentioned.

    :thumb
  17. ER70S-2

    ER70S-2 Long timer

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    There is a cable adjuster for the throttle cable, up by the front brake master cylinder (more adjustment is available at the carb, if needed). The return cable needs to be adjusted at the carb and the gas tank will need to be off. Just press on the cables, like the arrows, and tighten until there is just a tiny bit of slack. I tighten my throttle until I can't hear the 'closed click' in the carb (not the throttle tube), then loosen a half turn or so.

    There must be a tiny bit of slack in both cables when you're done.
    Pic stolen from Wibby, post #1287 in this thread: :beer

    [​IMG]
  18. Jon_PDX

    Jon_PDX Long timer

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    And be sure to double check the slack at full right and left turn of the bars :wink:

    Jon...
  19. ER70S-2

    ER70S-2 Long timer

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    :eek1 :thumb
  20. epix1718

    epix1718 Been here awhile

    Joined:
    Sep 14, 2010
    Oddometer:
    745
    Location:
    Michigan/Indiana border
    Haven't been able to get much riding done in well over a month, but today test drove a somewhat local DR650 that was absolutely pristine. Came with a bunch of farkles, and a folder including all the receipts/maintenance logs. Was very impressed with it and got it for quite a deal so it followed me home.. Guess the purple color has grown on me quite some bit!! Receipts just in farkles alone are higher than the amount I paid for the entire bike with extras.

    With my current '96 Supermoto DR650.
    [​IMG]

    The new scoot, '97 with 9000 miles on it.
    [​IMG]