BMW Keihin Carb help

Discussion in 'Classic Motorbikes' started by Hog, Nov 21, 2003.

  1. Hog

    Hog Guest

    Ultimate Source and others now defunct used to do 40mm Keihin flat slide
    carb kits for Boxers. Does anyone know of a remaining UK expert and supplier
    in this type of equipment.

    They transformed the 1000cc beasts.
    Hog, Nov 21, 2003
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  2. Hog

    CBMart Guest

    San Jose BMW used to be the real experts, and the original source of a
    lot of the Ultimate Source stuff - if you see what I mean.

    If they don't stock the Keihin carbs anymore, I bet they could help
    out with part numbers and jet sizes.
    CBMart, Nov 21, 2003
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  3. Hog

    Tim Guest

    Did you try Brackens at all?
    Tim two#21, YGL#3 & BOTAFOT#84

    Due to the limitations of current email, the lip movements may be
    out of synchronisation as you move your finger under the text while reading.

    tim dot ukrm at dsl dot pipex dot com
    Tim, Nov 22, 2003
  4. Hog

    Hog Guest

    Hmm I might call them though I thought they had pulled out of a lot of
    specials stuff. Thanks
    Hog, Nov 22, 2003
  5. 36mm Dell' Ortos, as used on the R90/S, should have the same effect.
    Probably easier and cheaper to obtain as well.
    The Older Gentleman, Nov 23, 2003
  6. Hog

    sweller Guest

    Are they the same PHB type as on the Guzzi LM or the flat slide type?
    sweller, Nov 23, 2003
  7. Same as the Le Mans, IIRC
    The Older Gentleman, Nov 23, 2003
  8. Hog

    Hog Guest

    The R90S uses a pair of 38's (PHM 38 ) but Motorworks want £3-400ish a pair.
    The flat sides were better all round, a much more modern piece of kit. I'd
    only pay that kind of money for the latter, there is not that much wrong
    with the 40mm Bing CV's. I guess I mainly just need to get the throttle
    response and pick up back to pre-mono levels and but with new valves (1) I'd
    take the red line back up to 7250 from 6500. That's a gen 125mph.
    I pushed the red line on the old 100S up about 1250rpm but I wasn't trying
    to make that last a lifetime and the entire bottom end was polished, peened
    and rebalanced first.

    (1) dodgy welded 2 part valve
    Hog, Nov 23, 2003
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