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K& N Filter Jetting/ 1982 650E

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    K& N Filter Jetting/ 1982 650E

    I bought this 650E about a year ago, as is. Came with K& N oval pod filters (two carbs per filter) and this had been a project for him he never got going. The carbs had 97.5 main jets (a check of the bwinger online service manual, thanks sir) verifys this is correct. PO gave me another set of jets and a bit to drill them that when measured was 1.12 on the micrometer, that basically makes them #110 jets, a bit more actually. He said he thought that's what would get the bike going. He said he was a member of GSR although I have never been able to find him on here or is basis for believing the bike would run correctly with this size jetting.

    Does anyone have a better baseline with a standardish 4-2 exhaust system and the K& N filters? Bike falls flat above 4K rpm, starts, runs beautifully otherwise. Got to be some of you fellow GS riders that could direct me a bit. Thanks in Advance...Go Cubs!


    PS Yes, I know I SHOULD get the airbox but want to give it a whirl this way first. I have a selection of motor bikes to ride in the mean time.

    #2
    One week, no replys ?? Surely someone has this bike with pods...anyone?

    Comment


      #3
      Well, you had my attention till I read "Go Cub's" ha ha... I would not drill the main jet. If you start doing that pretty soon you'll have a bunch of main jets that you don't know what they are. Dialing in carbs can be time consuming and cost a few dollars for the jets. Personally I stay away from Dyno jet kits. I stay with genuine Mikuni jets. With your set up. I'd jump up three main jet sizes and go from there. So that would be 105's ... Let me check my collection, I may be able to help you out.
      My Motorcycles:
      22 Kawasaki Z900 RS (Candy Tone Blue)
      22 BMW K1600GT (Probably been to a town near you)
      82 1100e Drag Bike (needs race engine)
      81 1100e Street Bike (with race engine)
      79 1000e (all original)
      82 850g (all original)
      80 KZ 650F (needs restored)

      Comment


        #4
        Get a Dynojet kit. Expensive but it will save you a lot of trial and error. This is well covered in the 1000's of posts about this subject in older threads.
        Ed

        To measure is to know.

        Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

        Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

        Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

        KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

        Comment


          #5
          Save yourself grief and opt for the dynojet kit... Otherwise you'll likely have poor mid range umph,and there's where you probably spend lots of time.
          1981 gs650L

          "We are all born ignorant, but you have to work hard to stay stupid" Ben Franklin

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