2 into 1 left side exhaust

Discussion in 'Hacks' started by arbalest, Nov 28, 2020.

  1. arbalest

    arbalest Been here awhile

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    Does anyone know of any of the above exhausts are available new or used? I used to have a Lufmeister set on my previous BMW/Dnepr rig.
    #1
  2. TurTal

    TurTal Long timer

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    If you're talking Ural

    Raceway $1,200.00

    GPR $1,200.00

    .
    #2
  3. hack2004

    hack2004 Adventurer

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    In 1994 I had the muffler portion from a R100R attached to my 1975 R90 Ural rig . Exhaust is on the left side away from the passenger. No issues in performance and the sound is very mellow. I have a spare R100R muffler if anyone is interested. Send PM
    #3
  4. Strong Bad

    Strong Bad Former World's Foremost Authority Supporter

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    Knowing which bike you want it for just might help! :ear
    #4
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  5. arbalest

    arbalest Been here awhile

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    Sorry. R90/6 tug.
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  6. Fstwheels

    Fstwheels Been here awhile

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    I used a system off of a '84 R80ST, which exits on the left (similar to the GS only chrome), on my '77 R100/7 dirt hack. I cut and re-welded the outlet as it came out of the collector to go straight back and fitted a super trap. You could probably fit any muffler that suited you. I expect any airhead GS exhaust could accomplish this.
    #6
  7. hack2004

    hack2004 Adventurer

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    Oddometer:
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    On my
    R90/6 Ural rig. I have the muffler from the r100r. Needed to attach a different muffler hanger, but it clears using the Krause bags. I will get some photos posted soon
    #7
  8. hack2004

    hack2004 Adventurer

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    Attached Files:

    #8
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  9. arbalest

    arbalest Been here awhile

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    Did it look something like this? Do the stock head pipes line up with the collector? Is the R100GS exhaust 38mm?

    Attached Files:

    #9
  10. Strong Bad

    Strong Bad Former World's Foremost Authority Supporter

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    Isn't that a catalytic converter being used as a collector?. Also don't forget you always want your head pipes to be of equal length before getting to the collector that joins the two head pipes in to one.
    #10
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  11. Prmurat

    Prmurat Long timer

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    If you go on Hubert website
    http://www.thetimelessride.com/US/My-Rides/EU-Geneva-08.htm

    There is some explanation on the way he adapted a airhead G/S muffler on his sidecar.

    I bought last year a 2 in 1 left up mufflers for my 15 from France.... in SS well made; made the mistake of not trying it before having it ceracoated black. It was made for newer heads... sent it back and got my money back less shipping and costing, it was too bad as the exhaust was really well made!!

    Found these pics:

    https://www.emoto.com/actualites/2019/ural-et-ses-sidecars-2wd-a-l-aam-barcelonnette-9197.php

    BOUVIER MOTOS | 20 Rue des Mourettes | ZI Les Auréats | 26000 Valence |
    T. +33 4 75 42 06 83 | sebastien.ural@bouvier-motos.fr | www.bouvier-motos.fr
    #11
  12. Fstwheels

    Fstwheels Been here awhile

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    Yes, similar but the collector is smaller, not containing a cat.
    View attachment 2677601

    Attached Files:

    #12
  13. Strong Bad

    Strong Bad Former World's Foremost Authority Supporter

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    Old school Supertrapp! With that many discs in it it must be fairly loud?
    #13
  14. Box'a'bits

    Box'a'bits In need of repair Supporter

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    None of the Airhead collector boxes were catalytic converters.

    Re the R100R muffler, a lot of the bulbous portion between the collector & muffler is just a screen. That can be cut off. There is a quite nice stainless canister behind all that excessive chrome
    #14
  15. claude stanley

    claude stanley Claude

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    That is preferred but in a pinch
    a cross over tube will help.
    #15
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  16. Fstwheels

    Fstwheels Been here awhile

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    Yes, 18 discs, an airhead with attitude.
    P1010007.JPG

    Attached Files:

    #16
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  17. Strong Bad

    Strong Bad Former World's Foremost Authority Supporter

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    Now that looks like a fun rig to take out on the fire roads! I love it!
    #17
  18. TurTal

    TurTal Long timer

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    https://www.speedwaymotors.com/Univ...ikpYUUgx13EEUT1FYLKR2ibxXRZVk4AAaAvQPEALw_wcB


    1606770391928952769256600889928_752788065029967.png
    For example only...you'll need to match your pipe size





    Sometimes it's just easier to mock up your own exhaust from a kit

    Aftermarket can't always accommodate your particular needs and depending on mods you've done they simply won't fit

    At $150 bucks its an inexpensive way to create what you really want

    If you can't weld get the basics laid out then get a buddy to tack it up...once you're happy with it weld it up....paint or coat it and save a lot of $$$$$

    Find a cheap or free used muffler and you're good to go

    Hardest part of the job will be flanging the ends or getting your buddy to cut and weld your existing ones

    Outside that a little patience and creativity on your part is all that's required

    .
    #18
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  19. Strong Bad

    Strong Bad Former World's Foremost Authority Supporter

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    With those "slip to fits" swedgged U bends, you can put tabs on them and use springs to hold them together. Which sometimes makes them much easier to take on and off if you want to snake them through tight spots. Here's a set of SS headers my son built for an off road race car as an example:

    SS headers.jpg
    #19
  20. Fstwheels

    Fstwheels Been here awhile

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    Exactly what I built it for in '84. A 3.56 fd makes it all usable power and with studded tires it gets around really well in the winter. Approaching 170,000 miles since the build.
    #20
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