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Thread: '58 R/50 Carb Replacement

  1. #1
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    '58 R/50 Carb Replacement

    I inherited this bike from the original owner in original running condition with tons of miles over 30 years ago. It has started and run great until now. The carbs are leaking fuel. I cleaned them and replaced the available seals to no avail, but to be honest, they are original and worn out.

    I am looking for a source for replacement and ball park costs.....

    VIN: 558596
    Frame: 658596
    LS Carb: 1/24/45
    RS Carb: 1/24/46

    Thank you all for your time.

    Jim Posig

  2. #2
    Liaison 20774's Avatar
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    Jim -

    I assume that your VIN and frame numbers actually match...looks like the first digit is different. Those are probably the early carbs for the 500cc series, and likely original to the bike. There are later carbs that would fit the R50 and R50/2 but would probably require some rejetting.

    Do you know if the floats are still the original brass style? Is it possible they have stress cracked and are taking on fuel? This is a common problem. Vech at Bench Mark Works made plastic replacements...all his supplies have been sold to Max BMW.

    Make sure that the center rod through the floats is not sticking in the well at the bottom of the float bowl. "Cancer" on the old pot metal bodies can build up and hold the float down. That rod needs to seal against the seat that is in the underside of the cap. You might consider getting some toothpaste or similar on the end of a pencil eraser and rub away at the seat to ensure a smooth surface.

    I'd contact Bing in Kansas for some help. They might have carbs for sale or they could take your carbs and rebuild them for you.

    https://www.bingcarburetor.com/index.html

    I'm going to move this thread over to the Vintage part of the forum where it is more appropriate.
    Kurt -- Forum Liaison ---> Resources and Links Thread <---
    '78 R100/7 & '69 R69S & '52 R25/2
    mine-ineye-deatheah-pielayah-jooa-kalayus. oolah-minane-hay-meeriah-kal-oyus-algay-a-thaykin', buddy!

  3. #3
    Registered User cwroady's Avatar
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    Kurt is on the money .. Charlie at Bing USA in Kansas does good work, price is fair and he would likely be much more reasonably priced than trying to replace the very hard to find carbs. I have been in your shoes with a right side carb I thought was history and Charlie repaired the body of it. Side benefit is you keep the original carbs.


    His number is (620) 767-7844‬
    Chris - 2015 BMW RT / 1973 BMW R75/5 / 1955 BMW R50 - Yard Art - 1968 Hodaka / 1968 Sachs

  4. #4
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    Quote Originally Posted by cwroady View Post
    Kurt is on the money .. Charlie at Bing USA in Kansas does good work, price is fair and he would likely be much more reasonably priced than trying to replace the very hard to find carbs. I have been in your shoes with a right side carb I thought was history and Charlie repaired the body of it. Side benefit is you keep the original carbs.


    His number is (620) 767-7844‬

    I talked to Charlie and my carbs will be in his hands on Monday. Thanks again for the referral........

    Jim Posig

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