Anybody know about monolever airheads?
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Anybody know about monolever airheads?

This is a discussion on Anybody know about monolever airheads? within the General forums, part of the Caferacer.net Forums category; checking out a 1985 or 86 R80RT. Front end has been replaced with a naked one from a standard r80, other than that the bike ...

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  1. #1
    Senior Member Geeto67's Avatar
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    Anybody know about monolever airheads?

    checking out a 1985 or 86 R80RT. Front end has been replaced with a naked one from a standard r80, other than that the bike is bone stock. Hasn't run in a couple of years but the tank was recently relined and the carbs were pretty clean. Also no weep or oil leaks spoted around the engine (esp by the drive or the cylinders).

    anything I should be looking for? anything that is NLA on these bikes that makes it harder to service/maintain? general musings about monolever airhead BMWs? anybody racing one?
    Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better.
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  2. #2
    Senior Member Geeto67's Avatar
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    Nobody? How about jokes then....this airhead wals into a bar...
    Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better.
    - Samuel Beckett
    A tool is just an opportunity with a handle
    - Kevin Kelly

  3. #3
    Senior Member Kurlon's Avatar
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    I'm just lurking because I know where there is an R80 sitting, curious what comes up for info. I've got nothing to share of my own on the subject.

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    Senior Member UngaWunga's Avatar
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  6. #5
    Senior Member Geeto67's Avatar
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    Which topic?

    Not talking about a g/s here, an RT = streetbike with fairing.
    Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better.
    - Samuel Beckett
    A tool is just an opportunity with a handle
    - Kevin Kelly

  7. #6
    Senior Member tsflstb's Avatar
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    I had an '84 R80RT for a while...a twin shock model though. The only real issue was "valve recession". Not sure what year they changed the materials to deal with unleaded gas. You can have the heads reworked or just live with a 10 minute clearance check or adjustment every 1000 miles or so. Great all around bike.

  8. #7
    Senior Member crazypj's Avatar
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    Missed this first time around
    BMW allow almost an inch of side to side movement in swing arm (at rear of tyre/wheel)
    I forget exact number, haven't worked on one since the 80's
    I dabble in rocket science, when I\'m not picking my nose
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  9. #8
    Senior Member Geeto67's Avatar
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    an Inch is a huge amount of play, it would feel like riding a cube of jello down the street if it were an inch. not doubting there is a lot of play, jus an inch seems excessive.
    Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better.
    - Samuel Beckett
    A tool is just an opportunity with a handle
    - Kevin Kelly

  10. #9
    Senior Member Pete Casper's Avatar
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    I was a member for BMWMOA until I sold my '84 R100 a few years ago. They had a fair to decent website that contained many tech articles on the 1980ties "R" model BMWs. The first thing I changed on the R100 was to swap out the Bosch 280W alternator for the Omega charging system upgrade from Motorrad Elektrik (450W). I think this upgrade is key if you are going to run any electrics such as heated gloves, vest, fog lights, airhorns, a zillion blue LED lights, blenders, GPS, Loran navigation. Otherwise, the boxer was pretty durable. I rode the crap out of mine.

  11. #10
    Senior Member crazypj's Avatar
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    quote:Originally posted by Geeto67

    an Inch is a huge amount of play, it would feel like riding a cube of jello down the street if it were an inch. not doubting there is a lot of play, jus an inch seems excessive.
    That's exactly what I thought as well.
    Never saw one with anything other than maybe 1/16", but, they were all low mileage bikes back then
    I did modify a 27mm socket to fit inside frame recess so I could adjust bearings (BMW special tool was just way too expensive)
    Shop 'dumped' BMW a few months later as BMW wanted us to be exclusive, even though we sold Suzuki about 20:1 (and more Vespa's than BM's)
    I dabble in rocket science, when I\'m not picking my nose
    The other night I gave my girlfriend an orgasm, but, she spat it back at me

    'you can take my word for it or argue until you find out I'm right'

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