DR350 Thread

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

  1. Silviu Gheorghiu

    Silviu Gheorghiu Adventurer

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    IMG_7412.jpg

    I never heard a OEM muffler so I don't really know but it has a deep bass sound unmodified. Not too loud but it still bothered me.

    So I did this:
    A variation of my chevron nozzle from the previous muffler. It works and no power loss noticeable.

    IMG_7304.jpg
    [​IMG]
    Friedom likes this.
  2. DualDog

    DualDog Been here awhile

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    Jan 12, 2007
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    239
    Location:
    Galesburg, IL
    1993 DR350S Carb Question:

    I have a 93 DR350S (Street legal version - kick start). I had foot surgery in March and have stayed away from this bike since it is kick start (last year for street legal version before they went to electric start). Now the bike starts on full choke but if you give it any throttle or take it off choke it dies. I assume it needs a carb cleaning and was looking at a rebuild kit. I see there are kits out there for 90-92 and 94-99. Just curious if anybody out there has bought a rebuild kit for a 93. I am not sure if a different carb was used in 93 than other years or what is going on here. I was also thinking about installing a fuel screw to make adjustments easier. I called Jesse at Kientech and it sounds like he doesn't stock these anymore.

    Any thoughts or help here would be appreciated.
  3. vagabondmatt

    vagabondmatt '99 DR350SE

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    FWIW for both my old '93 kick only dual sport and my current '99SE, both bikes behaved very well after a thorough carb clean without rebuild kits. I made sure the tiny ports were open using thin steel guitar strings, that the float o-ring was in ok shape, and that the diaphragm was not torn.... and used a can of carb clearner. Good luck!
  4. Friedom

    Friedom Onward and upward!

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    plugged or partially plugged pilot jet. Clean it or replace it. 37.5 Mikuni.
  5. Dirtnadvil

    Dirtnadvil Long timer

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    I understand what your referring to. I have a couple of after market tanks for my DRZ and there is a bunch of fuel I can't get to, so it is basically extra weight and a false capacity rating for the tank.
  6. thump!

    thump! Adventurer

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    for mikuni carb stuff procycle.us or moto-lab.com
  7. miniboxer

    miniboxer Adventurer

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    You can rotate the intake on the carb by 90° to a horizontal position -> this allows to fully use the 4.2 gallon from the Acerbis tank. Alternativly you can use a petrol pump.
  8. plugeye

    plugeye dreamer

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    [​IMG]

    this is a clarke 4.2 gallon, yamaha petcock & BST33. smooth fuel line path
  9. motolab

    motolab Long timer

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    4,960
    I have a kit in stock that fits your '93 S model. Full list of parts contained in the kit: float needle, needle seat o-ring, cold start enrichment feed pipe o-ring, float bowl gasket, main jet access plug o-ring, fuel screw o-ring, slide guide o-ring, two felt throttle shaft seals, two stainless steel socket throttle blade screws and instructions. All o-rings in this kit are FKM (aka Viton).

    Regards,

    Derek
    hondabtr, Friedom and MrPulldown like this.
  10. tatt2mike

    tatt2mike Been here awhile

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    XRL650 5.8 Acerbis all the way! Check out the bike specific thread index. Good chit.
  11. tatt2mike

    tatt2mike Been here awhile

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    Anyone have a good rear spring for a 220# rider they would like to part with?. Racetech calls out 5.8kg as stock and recommends 6.1kg for my riding type. they offer a 6.7, 7.6, 8.1 kg.
  12. DualDog

    DualDog Been here awhile

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    Thanks for the replies regarding the 93 DR350S carb issue. Motolab, I sent you a private message.
  13. Hugh B

    Hugh B Adventurer

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    @Luketj2 I was having the same problem on my Dr. I checked the switches and they were good. It turned out to be a bad wire in the taillight. HTH
  14. MrPulldown

    MrPulldown Long timer

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    So this question is for you guys that have built engines from the bottom up (or feel you know). Been read that a crank and side cases are matched. One should NEVER swap a crank from a different engine into the a case. How true is this statement. School me.
  15. Friedom

    Friedom Onward and upward!

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    The crank sits in the bearings, not the case directly. You could definitely move a crank to a different engine. Case halves might be matched to each other, I've never heard this definitively answered.
    buzzword likes this.
  16. 2old2Bbold

    2old2Bbold was 2bold2getold

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    From my experience, cases are matched, cranks are not.
  17. Anonawesome

    Anonawesome Scenic Rider

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    Pretty sure the cases are cast in one piece, then cut down the middle. By mixing cases, you don't know what condition the casting mold was in that day, and if each half will align properly. But yeah, bearings should make crank swapping a non-issue.
  18. 2old2Bbold

    2old2Bbold was 2bold2getold

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    Don't know how they are cast, but the story was... they are machined in pairs. Not sure if that's really the case but I wouldn't want to take the chance.
  19. Friedom

    Friedom Onward and upward!

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    Outside of 3d printing, I don't think you could manufacture a case in once piece.
    This is based on my casual armchair expertise though.
  20. brownvv

    brownvv Been here awhile

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    I am running that same muffler on both my bikes. I like it allot but yes it is slightly louder than stock