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Thread: R80 Series and AirBox Modifications

  1. #1
    Registered User
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    R80 Series and AirBox Modifications

    I ran across a site that illustrated how to "possibly" get better gas mileage by modifying your airbox snorkels by drilling 4 small holes at 30 degrees close to the edge of the snorkels entrances. There was a re-call in the 80's I believe on such an issue. Unfortuately, I would love to send the website for your viewing but I haven't figured it out how - yet. I will, but time is not available. Nevertheless, has anyone comer across such reading and IF so, what are your thoughts?

  2. #2
    Luddite Looney wecm31's Avatar
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    This came up a year or two ago, consensus was it wasn't going to change much.
    I had a quick search, couldn't come up with the thread.

    My thought (from that original thread) is that if the BMW engineers spent countless
    duechemarks designing, prototyping, and testing the intake tract and ended up with
    the twin snorkels....I find it hard to believe that we can do better with a drill!! The
    snorkel would have been a major change for the air intake and not something they
    just threw together.
    Gerald P
    The last thing I want to be is just like everyone else...
    1985 R80RT
    1969 Sport Fury Convertible

  3. #3
    Registered User PAS's Avatar
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    Quote Originally Posted by Bikemike1 View Post
    I ran across a site that illustrated how to "possibly" get better gas mileage by modifying your airbox snorkels by drilling 4 small holes at 30 degrees close to the edge of the snorkels entrances. There was a re-call in the 80's I believe on such an issue. Unfortuately, I would love to send the website for your viewing but I haven't figured it out how - yet. I will, but time is not available. Nevertheless, has anyone comer across such reading and IF so, what are your thoughts?
    Perhaps the article you read was by Snowbum (see Link) The "drilled hole mod" only apples if you have a metal cover on your 1980 machine. The later mod with two different snorkel sizes may help with gas mileage. Read both carefully. I have no experience with either since I ride an 81 R100RT.
    Good Luck
    http://bmwmotorcycletech.info/R80-fu...e-problems.htm

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