DR350 Thread

Discussion in 'Thumpers' started by leonphelps, May 16, 2007.

  1. MrPulldown

    MrPulldown Long timer

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    Thanks I figured out the choke. I swaped out the entire thing, plunger and all. I did so by unscrewing it from the body via the 14mm plastic nut.

    I was under the impression that this was the BST31 carb found on the DR250 rather than the BST33 for the dr350. However micing the output orifice of the carb I get 1.296". That is pretty dang close to the 1.299 which would be 33mm. So you might be right.
  2. Rich667

    Rich667 Been here awhile

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    I used to rip valve stems out left and right with no rimlock when dirt riding. It depends on air pressure and how/where you ride. You could also install a second rim lock opposite of the first to help with balancing.
  3. smc5735

    smc5735 Adventurer

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    Beautiful day to go riding.

    After some issues this winter with my 97', I tested her out today.

    Cleaned the carb last night, brand new UNI air filter, new brake pads and fresh oil !

    [​IMG]
  4. markk900

    markk900 Been here awhile

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    The number is under the grime on the side of the carb body where the slide goes up and down....it will give you an idea of which bike the carb was originally in (if you do lots of research in the shop manual).

    As others have said its a drain screw (in about as good condition as the one I just replaced....the head gets messed up pretty easily.
  5. OldUKBikerGuy

    OldUKBikerGuy Cultural Attaché

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    When I picked up my '97 DR350SE last year, the PO had removed both rim locks and fitted some self-tapping screws through the rims and into the tyre walls; apparently it was an old trials-riding mod that has been around for years.

    Looks a bit weird, but hey presto, no balancing issues and no slippage, even with really low pressures.

    It works for me - YMMV.
  6. Stretch67

    Stretch67 Mad Scientist

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    That's an old drag-racing trick also.

    [​IMG]
  7. NWRambler

    NWRambler Adventurer

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    I'm curious about doing that. Are the screws just short enough that they don't go through the tire? Gotta get that right or puncture the tube, I would think. Do they hit just out board of the bead? Or go right at it? Thanks.
  8. OldUKBikerGuy

    OldUKBikerGuy Cultural Attaché

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    I have yet to take my tyres off, but I guess the screws are just long enough to get a grip into the sidewall, yet not right through, for obvious reasons.

    The tyre should be thick enough at this point to be able to estimate this, and the inner tube shouldn't be this low inside the tyre to be near the screw anyway.

    The photo that Stretch67 posted above shows how it's done very well.....and if it works on dragsters, we should be OK!
  9. OldUKBikerGuy

    OldUKBikerGuy Cultural Attaché

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    When I said 'sidewall', I of course meant 'bead'. My bad. :doh
  10. Stretch67

    Stretch67 Mad Scientist

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    Having no experience with running screws into a tire bead, you can take this with a grain of salt, but I wouldn't drill into the bead of the tire. Drilling may break one of the strands of wire in the bead, which couldn't be a good thing. Just drill the rim, and then slowly run the screw into the bead, allowing the screw to gently work its way between the strands of wire in there without breaking any of them.
  11. NWRambler

    NWRambler Adventurer

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    Sounds like good advice, Stretch. I did a little more looking around and found this: http://www.buchananspokes.net/categories/miscellaneous_tools.asp Seems like a more prudent approach. When the spring rubber goes on, I think I might give them a try. I still need to figure out how many it takes to have any real effect. Anybody got any experience with these?
  12. thump!

    thump! Adventurer

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    The screws will function like a rim lock UNTIL you have a flat. If you try to ride on the flat there is some possibility they will release the bead (rim locks won't) and make a mess of the tire bead. Then there is the issue of field repair... gonna take a while to back out all those screws on the side of the trail. I hate rim locks but they do work. I expect that if I had to repair a flat in the woods I would hate bead screws even more.
  13. kobukan

    kobukan almost gnarly

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    Personally, I don't find the rim locks to be difficult to deal with, once you get used to them. At first I thought they were a pain, but having changed tires numerous times now, they don't bother me at all, and I don't seem to have to use a lot of weight to get the tires balanced. YMMV
  14. RuggedExposure

    RuggedExposure Now with more rugged

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    My bead locks caused a flat on the dr350 by rubbing a hole in the tube. So out they went.
    I personally don't see why they exist...
    I rode 25 miles through rough terrain on a flat on my Terra 650 a few weeks ago and it has no bead locks.
    I didn't have my tool kit because i bought the bike the day before. But nothing bad happened, just had to go slow.
  15. ADV BUM

    ADV BUM Been here awhile

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  16. heirhead

    heirhead worlds worst mechanic

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  17. ADV BUM

    ADV BUM Been here awhile

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    I have run tubliss for at least 50 miles of street at one time.
    The only reason it says off road only is because it is not DOT certified. Neither are the led blinkers, aftermarket tanks, so on and so on. The foam inserts cant run on street because the heat builds up and melts the foam. In theory the heat from the tire would affect stock tubes more than the tubliss system. ARE TUBES DOT Certified?
  18. RuggedExposure

    RuggedExposure Now with more rugged

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    I'm starting to think DR bikes are cursed.
    Or don't like New Mexico.
    Or don't like me.

    Bullitman281 and I today began the 'pre-run' portion of our El Paso, TX to Sand Diego, CA trip using the border road.

    A few hours into the trip his DR650 began puking out oil. So we limped it into El Paso and he decided to start taking it apart in the parking lot of a gas station:
    [​IMG]

    A few hours later:
    [​IMG]

    We eventually got some RTV gasket maker and got the bike sealed up again. The day trip that was only supposed to take a few hours turned into an 8 hour debacle. Tomorrow morning we leave for San Diego. Unless something else goes wrong.

    And we haven't had a chance yet to take apart my 350. I have the feeling he's gonna be taking it home to CO and fixing it over the summer.
  19. MrPulldown

    MrPulldown Long timer

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    Does the idle jet have a hole in the end
  20. 2old2Bbold

    2old2Bbold was 2bold2getold

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    Mine's got a little bitty one (37.5), goes all the way through. :D