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Thread: Replacement need for bing carb floats

  1. #1
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    Replacement need for bing carb floats

    I have been a member for 20 odd years and run a R80/7. I have become aware of the gasohol dilemma and investigated float replacement need. A mechanic of repute advised me to use high test in my lawn mower to prevent damage to the carb system. His reasoning was that high test fuels DO NOT contain alcohol additives. If this is true than obviously there is no need for float modification in Bing carbs as long as one uses high octane fuel. I have always used high test in my R80/7. I am open to comment.
    Sincerely
    jschardt @uic.edu

  2. #2
    Outlander Omega Man's Avatar
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    Quote Originally Posted by jschardt View Post
    I have been a member for 20 odd years and run a R80/7. I have become aware of the gasohol dilemma and investigated float replacement need. A mechanic of repute advised me to use high test in my lawn mower to prevent damage to the carb system. His reasoning was that high test fuels DO NOT contain alcohol additives. If this is true than obviously there is no need for float modification in Bing carbs as long as one uses high octane fuel. I have always used high test in my R80/7. I am open to comment.
    Sincerely
    jschardt @uic.edu
    Welcome to the forum JS. There are many threads on the issues of alcohol in today's gasoline. Since your question seems mainly about your Airhead, I'll move the post to the Airhead section. Enjoy the forum. Gary
    "Well they say.. time loves a hero but only time will tell.. If he's real, he's a legend from heaven If he ain't he was sent here from hell" Lowell George
    2009 F800GS 1994 TW200
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  3. #3
    P Monk
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    octane of ethanol

    since the octane number of ethanol is 99.15 r+m/2 or road, I don't see any reason the 93 octane premium gasoline would not contain ethanol.
    P. Monk
    My prized possessions. 74 R90/6 Mine! (also know by bride as the Black Hole). 09 R1200 GS. My wife, 1953 model who has survived aplastic anemia and a bone marrow transplant. My most prized possession is my relationship with Jesus!

  4. #4
    Administrator 20774's Avatar
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    Some repute on that mechanic...all fuels contain alcohol (ethanol). There are "pure gas" stations around the country...go to their website to find them...you can get gas without the alcohol. But your average pump is going to have it.
    Kurt -- Forum Administrator ---> 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!

  5. #5
    Registered User boxerkuh's Avatar
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    Greetings and welcome to the forum....

    99.9% of all gas stations have alcohol in their fuel, regardless of grade. However, some gas stations have "no ethanol" in some of their pumps. There was a great article in last issue of the Airhead magazine. I believe the web site is: www.pure-gas.com or something to that effect. A little research might show some gas stations in your area. I have 2 local gas stations that sell no ethanol 93 octane gas and 2 other one's that have no ethanol 89 octane gas. I choose the 93 octane pumps with no ethanol.

    If you are not a member of the Airheads, it would be a wise group to join as well.
    Keep the rubber side down!!
    1986 R 80 RS
    1992 R 100 R
    BMW MOA Life member; Ironbutt Member; Airhead Member

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