carb

  1. authenticnovelty

    Carburetor Boot Barbs vs In Carb Barbs for BS38 Carbs and Vacuum Petcocks

    Hi All, After carefully studying the wealth of knowledge on this site all summer, I decided to create an account and open a thread hoping someone can point me in the right direction on my problem below. Any input would be greatly appreciated. This summer I picked up an early 1978 XS650E. The...
  2. Jim

    Carbie Question

    BS-34's off an 80SG. So... I ordered a pair of 135 mains from Partzilla... .... received these.... They are identical to the 135 air jet and smaller than the mains....... They will in fact.... fit into the hole for the main...... So, my question is, will they work as mains or did...
  3. E

    Mystery problem!

    ok dudes this is what im working with. xs650 g engine which I beleive makes it an 1980. but! I got points. and BS38's and F model pipes the whole frame is a F which I assume is 79. I have a HHB PMA. 27.5, 2.0 , 135, Jets in bs38's. stock airbox the metal one with the two kinda square peices with...
  4. Jim

    Mikes XS Carb Needles

    Mikes has these.... link to Mikes Carburetor Kit - XS650 - 1980-1984 - Premium Heiden Dyno Tune Converts the fixed BS34 needles to adjustable. Anyone here tried these... have any experience with em.... comments?
  5. Bstryker

    Carbs, carbs, carbs

    Hey all! So... My bike was running decently and I wanted to mess around with it and get my idle smoother with no deceleration popping. Did a bit of research and found that it was most likely a lean mixture, though it could be a number of reasons. So I took the initiative to take off the carbs...
  6. gggGary

    The great o-ring, seal, gasket, nut, bolt, sizes used on the XS650 thread.

    BS34 carbs Throttle shaft seal Suzuki part # 13651-51010 SEAL I replaced the butterfly shaft seals with these Suzuki seals they fit perfectly. Cost a dollar less than the Yamaha seal ..... https://www.partzilla.com/product/suzuki/13651-51010 5twins tip BS34 mix screws 1mm thick x 3mm I.D...
  7. TwoManyXS1Bs

    CruzinImage BS38 carburetor floats -- Review

    This is a follow-up to xjwmx's review thread: http://www.xs650.com/threads/bs34-diaphragm-and-piston-from-cruzinimage-review.50651/ CruzinImage offers BS38 float pairs for 1970-1979 carbs. Even though there's different listings for various year groups, they're all the same float set...
  8. TwoManyXS1Bs

    JBM Industries BS38 Diaphragms - Fail?

    Started getting off-idle stumbling, hesitation, on left XS1B BS38 carb. Pulled carbs, left carb failed the diaphragm drop test. Plugged starter circuit, still fails. Found the JBM diaphragm was no longer a snug fit on the slide. Easily rotated, easily removed. It appears that the...
  9. imtaylors

    Throttle not "snapping back"

    Hey everyone! I am new here and also a proud new owner of a 1981 XS650. Love it. I needed to clean out the carb and replace some stuff, got a new cable (yes I lubed it up) and a new throttle sleeve and grips. My only thing is, it is not snapping back like it used to, and I am stuck, I have...
  10. T

    Wanted - Looking for a Carb cleaning service

    I have some BS38 carbs on my 1979 650. I’m looking to ship them out to someone who is experienced in carb work. I just need a cleaning/rebuild if needed while inespecitng. Just a little far over my head in terms of what i’m Looking for. Contact me here or at Tjpirates2014@yahoo.com
  11. A

    Carb float range

    Working on my 77 standard. Noticed fuel in the drain hoses. Looked at the heights and they checked out to 24mm. Thought about raising them. With the bowls off, I inverted the carbs. At this point I noticed that one float lowered so much that the float needle almosts comes out. Flipping...
  12. T

    Why does idle high with choke?

    i always wondered this... and I don't think I have a problem.... Why does bike idle high when cold with choke? I know other bikes do this, I was just trying to wrap my head around why adding more fuel causes this. 74 w/ VM-34's for the record
  13. IAmZen

    Newbie With Carb Issues

    *I just want to state i have searched the forums,google and youtube and have not been able to find my awnser. So i have a 1981 Xs650sh stock carb. i rebuild it. Now im trying to put it back on the motor and it doesnt want to go on. Am i supposed to put the boots on the carb or engine first...
  14. eight0

    Cleaning and rebuilding my XS2 carbs

    Hi All, So I've been reading this site, the carb guide and watching as many videos as I can about carbs and the time has come to take my XS2's BS38's apart. I should point out that I have never taken apart a carb before... When I bought the bike it ran but when the petcocks were turned on it...
  15. muskallunge

    New XS Chop Carb Tuning: Advice Needed

    1978 XS650 with pod filters, straight pipes and bs38 Mikuni's. Just replaced pilot jets from stock 27.5 to 30, main jets from 135 to 140, upped the clip on the jet needle to the 2nd slot from the top, have the mixture screw out 2.25-2.5 turns and had the entire carb sonic bath cleaned. Still...
  16. Niels Mouthaan

    Powerloss and backfiring in left cylinder (video)

    Hi guys, I have an XS650 from '83 with electric ignition. A few months I did an annual check and corrected valves and timing. Recently I start noticing that my left cylinder is backfiring a bit (especially when running idle or when decelerating). Also when holding my hand behind the exhaust I...
  17. Sazbo

    Miksexs needle jet

    hi all, got a needle jet from mikesxs but it has no markings on it, so do I have to trust that I received the correct one or is there a way I can make sure it's what I need, can I measure it somehow? I don't get how there is no size stamped on it.
  18. Surfrat28

    Starting the bike and Idle Issue

    Hey everyone hope you guys had a nice Memorial Day weekend! Bike: I have an 79 xs650 bored out to the 707cc with a Boyer ignition system installed to give me the bare minimal wiring for a chopper style bike with a kick only setup. Issue: I do have spark. The only way I can get the bike to...
  19. E

    Wanted - BS34 LH Carb Body, or set of carbs

    Pilot screw badly stuck in my LH carb ended up with the threads destroyed and pilot still in there. Need a replacement LH carb body, or would consider full carb or set of carbs. BS34 style, my bike is a 1980 but I believe its the same carbs '80-'84. Let me know what you've got. Thanks!
  20. Dale Harris

    Sold / Found / Inactive - Bs34 plastic needle spacer

    Needing just 1 of the plastic slide needle spacers for the mikuni BS34 carbs. Part is circled in red. Anyone have one they would like to sell or can let me know where to source them? Thanks
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