So I sold my GS.... and then I went shopping....for a G/S!

Discussion in 'Airheads' started by Solo Lobo, Feb 21, 2008.

  1. One Less Harley

    One Less Harley OH.THAT'S GONNA HURT

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    I did look at what the Clymer has for needle #'s, and then compared the bikes listed in my earlier post and saw different p/n's for what I assumed should have been the same. The Clymer list the 268 for only 1979 on the R100S/RS/RT, the fishce doesn't differentiate the years as it groups it to 77-84.

    The R90/6- #268 is p/n 13111255840

    while the R100RS #268 is p/n13111338691
  2. supershaft

    supershaft because I can

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    I just looked them up. The PN is 13 11 1 260 971 for 268 needle jets regardless of which bike. The ETK lists the jet size right beside the PN. Use Max BMW, not an old fische. I hope that helps!
  3. _cy_

    _cy_ Long timer

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    talking to the Bing factory guy made me Leary... they said to replace mid range jet/needle every 30k miles. I'm getting 54 mpg going easy on throttle. 42mpg medium to light throttle and 33 mpg normal balls to the wall throttle.

    the Bing guy couldn't dispute any R80G/S getting 54 mpg doesn't need new needle/jets. that is after recommending I buy a set of needles and mid jets.
  4. One Less Harley

    One Less Harley OH.THAT'S GONNA HURT

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    dang I was looking at the needle..not the jet. Thanks
  5. _cy_

    _cy_ Long timer

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    needle wears into the jet .. best to replace as set
  6. One Less Harley

    One Less Harley OH.THAT'S GONNA HURT

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    54 mpg!!!! what's you carb set up??? I might be able to get 42 mpg, w/ a tail wind.
  7. _cy_

    _cy_ Long timer

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    note that was with an extremely light throttle... no clue on jetting. but what I did do is custom tuned mixture by regulating exhaust discs with a tunable exhaust system. did plug checks to verify mixture range.

    kept adding exhaust tuning discs (less back pressure) until power started dropping off with plugs reading very lean. then reversed process slowly by subtracting discs (more back pressure), until power band improved along with correct plug color.

    I've got a color tune, but have not used it with G/S yet. my G/S sure runs strong! out runs my R90S to 95 mph and it's got 185 psi compression. very strange...

    adding exhaust tuning discs leans mixture... this would an easier way to lean mixture when traveling at altitudes for extended periods.
  8. supershaft

    supershaft because I can

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    You got to remember which word is the noun and and word is the adj.. The numbers we have been discussing are needle jet sizes, not jet needle sizes. Different PN's for jet needles but that is all about how they are held into the slide. Other than that, there are no choices with our CV's. It confusing and very easy to type backwards. Well, I still hope I have helped.
  9. Solo Lobo

    Solo Lobo airhead or nothing

    Joined:
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    How about this beautiful work by our own wirespokes? That's a custom built brass adapter for the speedo cable to replace the broken plastic one

    [​IMG]

    [​IMG]
    Some new Alu stock to re-manufacturer the top headlight bucket mounts this weekend​

    [​IMG]
  10. Solo Lobo

    Solo Lobo airhead or nothing

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    Location:
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    OK, back on the road:

    [​IMG]

    It's a beautiful sunny 60 degree day here in Seattle, I put it together and hit the road for a limited run.

    First thoughts on the WP Extreme 50mm front end:


    • waaaaaaayyyyy plush!!
    • Absorbs bumps/drips/whatever like crazy
    • Steering seems nearly identical to the previous set-up
    • Brakes seem like I will not miss my 320mm rotor kits from the old front end

    Things to address now:

    • Tighten the steering head bearing adjustment
    • bleed front brake (spongy, but otherwise seems good)
    • Compression adjustment - well the bike dives heavily under braking and I though I had 10 more clicks of comp to add, got two more and that was it. May need to go to the suspension tuner (no big surprise)
    • Clunk coming from the left (comp) fork upon rebound??
    Other things learned:


    • Rebuilding the carbs - next time pull the chokes before cleaning in the ultra sonic tank. Some scrunge built up and froze the chokes. I had to strip (spilling gas everywhere) and clean. Need to get some new choke return springs and gaskets
    • Don't introduce multiple changes at once... while I was riding around testing the new forks, the carbs where horribly out of synch and the handlebars were a bit loose :lol3
    • Wrench less, ride more :ricky
  11. Solo Lobo

    Solo Lobo airhead or nothing

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    • Set set my Ohlins back to the baseline settings
    • Adjusted the steering bearing pre-load as it was to light
    • replaced the bent float pin I found (caused) on the last rebuild with new, as well as the other side
    • checked that both the jet needles were on the third notch as I have some popping on decel with the throttle closed
    No ride however.... perhaps later
  12. Solo Lobo

    Solo Lobo airhead or nothing

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    "Don't bury me, I'm not dead yet"

    [​IMG]
  13. _cy_

    _cy_ Long timer

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    good grief .. you've got a LOT of work into your G/S!
  14. Solo Lobo

    Solo Lobo airhead or nothing

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    And I'm not done yet ! :lol3
  15. boxermoose

    boxermoose Regressive airhead

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    After almost 5 years and 121000 thread views - how many miles have you put on this thing:evil
  16. Solo Lobo

    Solo Lobo airhead or nothing

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    I'll have to take a picure of my Odo this weekend and post it up!

    :evil
  17. Solo Lobo

    Solo Lobo airhead or nothing

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    Glacial pace here.... anyway just doing research as I am either going to:

    1. Have my WP's re-valved and rebuilt right away
    2. Have my frame and other bits blasted and powder-coated
    3. Have the reinforcements welded on and then #2
    Need to figure out which takes priority... thinking #3 today...
  18. Cordless

    Cordless Two Wheel Addict

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    Looking forward to seeing this g/s. And I might just get a chance to.

    Will you document your teardown, welding, frame painting, and reassembly here with lots of photos?

    Enquiring Minds and all that.
  19. BeardThrone

    BeardThrone ...in bat country.

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    Give Seattle Powdercoat a try. I've dealt with them a couple of times now and they have a pretty fast turn around. I had my new crash bars done by them for like $90 and they were done a week earlier than they quoted. If you stick to a color that they have a lot of then you will get moved up in the queue.
  20. Solo Lobo

    Solo Lobo airhead or nothing

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    So, stripping to the frame for powdercoating is out. I am back on refinement of the front-end to get my G/S in top shape for the comming national rally in OR:

    OK, to re-cap where my G/S front suspension is at today:

    1999 KTM 640 WP Extremes shortened and installed - otherwise completely stock

    Tried running 5wt and 10wt fork oil, now on 7.5wt

    With all these weight I rode a number of miles varying the adjustments on the comp and re-load from nothting to max

    None of the weights of oil nor setting on the valves gave me a plush and controlled ride (like the Ohlins shock out back does). All were a compromise and right now with mid-level adjustments on the comp and pre-load with 7.5wt the front end has a cavitation (?) and gently hops while riding on pavement... the front wheel was balanced when the new TKC was installed.

    So, where are we today? The forks are in my car and headed to Konflict Motorsports to Alex who I got my custom .055 springs from for some valving adjustments, seals and such. Turn around time will be ~2 weeks.


    [​IMG]