1978 BMW R100/7 Advice

Discussion in 'Airheads' started by wvrocks, May 27, 2011.

  1. wvrocks

    wvrocks Been here awhile

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    I just came across a '78 R100/7 and I'm considering buying it. Its got 56k miles, paint is Burnt Orange Metallic and is probaby a 8 of 10. Some of the tank pinstriping is worn and there are a few small dings in the tank. Tank looks ok inside. The seat has one small tear that was covered with tape near the latch. Comes with Krauser hard cases that are in good condition with extra keys and an expandable leather BMW tankbag and an aftermarket handlebar mounted clear windscreen. Also includes extra rear brake shoes, one mirror, a full set of extra cables, extra plug wires, 10 oil filters and 3 air filters, a big stack of head gaskets, extra windscreen, some hippohands and some exhaust shields. New brakes pads on the front and decent looking tires. The fork boots and shaft drive boot are pliable with no cracks. Its last long trip was DC to British Columbia with no issues.

    So thats the good stuff...

    Now the not so good. The bike hasn't been ridden in 2 years due to the owner breaking a leg on a fall at home. Its been started every month or so over that 2 years. He went on a trip for 2 months, came back and it wouldn't start. It cranks but doesn't fire.

    There is a small oil leak that appears to be coming from around the oil pan gasket, mostly around near the back of the engine. It sounds like its been doing that for a while.

    The left carb overflows when you turn the petcock on. Takes about 10 seconds to start overflowing. I have no idea how long the gas has been in the tank.

    He's asking $2000 and seems confident he could get more if it was running.

    This would be my first airhead, having owned an SV650 and a KLR previously. I'm not afraid of working on the bike myself but I curious if this sounds like a good deal or not. Does the non start condition seem like something that should be reasonably simple to fix? Carb and oil leak?

    Thanks much!
    #1
  2. Mista Vern

    Mista Vern Knows all - tells some.

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    That's a good deal. The carb leak is just some smeg between the float needle and seat and should be super easy. The oil leak could be anything, but you could ride it around even with it leaking. You'll want to change all fluids and make sure the gas tank is really clean, as well as the carbs, but just busy work more than anything technical. Go for it!
    #2
  3. Rob Farmer

    Rob Farmer Long timer

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    I've got a 78 100/7 with over 200k on it. Buy that one you won't be disappointed.
    #3
  4. wvrocks

    wvrocks Been here awhile

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    Here are some pics

    [​IMG]

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    #4
  5. 97oilhead

    97oilhead Been here awhile

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    That's a good buy.

    If you don't want it I'll buy it.:evil
    #5
  6. Mista Vern

    Mista Vern Knows all - tells some.

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    Nice! A little oil goes a long way on cardboard and cement so hard to tell about the leak. Often the oil pressure sender will leak on left side of engine toward bottom, or the pushrod seals. Worst case scenario is the rear main. Can you tell where it is coming from? If not, then you have to clean off the engine and run it a while.

    No matter what at $2K it's a good deal, at least at PNW prices.
    #6
  7. Speed King

    Speed King Long timer

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    2k? I'd be on that.
    #7
  8. dduelin

    dduelin Be Thou My Vision, Oh Lord Of My Heart

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    That windshield is a BMW accessory sold back in the day. Makes the deal even better. It would probably start with a carb cleaning and fresh gas. $2000 is not out of line in my opinion.
    #8
  9. DoktorT

    DoktorT BigBrowedNeandereer

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    #9
  10. dogmantra

    dogmantra the White Shadow

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    If you don't want it let m know where it's at.
    #10
  11. ozmoses

    ozmoses Ride On

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    Total POS, you'll never be happy-let someone else inherit the misery...:evil
    #11
  12. DoktorT

    DoktorT BigBrowedNeandereer

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    Just came to me:

    IF I already had a /7 or similar Airhead and
    IF I expect to put a lifetime of miles on it and
    IF I was under 30 so I could do it and
    IF I had the space then

    Buying this one or one similar and shelving the spares for my future use would be money well spent. Recover much from things you don't expect to need. How much will a good tranny be worth 10 years down the road when you need it?? A new light switch for my 79 is currently $140 new. It will last a long time but somewhere between 150-300k expect you will need one. That danged spezial axle washer flew off somewhere and I looked everywhere but I got a spare. It's a no brainer if lowest time used with highest value over the long haul is your definition of best results.
    #12
  13. Boxer Metal

    Boxer Metal Mad Scientist

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    Harro tank bag- big +
    Krauser Starlet bags- Make sure he has keys for them
    Factroy BMW accessory wind screen big +
    All of the oil leaks look more like the lack of keeping the bike clean. Clean out the float bowl, change the engine oil and ride it:D
    2000.00 is a great price.
    #13
  14. wvrocks

    wvrocks Been here awhile

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    DoktorT, I think the main reason he hasn't worked on it is because he has problems walking with a cane. Not exactly a priority. I kind of got the feeling he wanted it out of his his garage so he didnt have too think about it too much.

    And you were correct, valve cover gaskets.
    #14
  15. nachtflug

    nachtflug infidel

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  16. pthomas

    pthomas Been here awhile

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    If I hadn't already bought my bike, I would by that in a heartbeat. Mine was a bit more expensive and didn't have a fuel tank.

    I brought her home last week and I'm just now going through it and even though it wasn't supposed to have issues, except for a pinhole in the crossover tube, it looks like I'll easily be spending AMU+ on it just to be roadworthy (Airhead Monetary Unit, $1,000). Looking nice will be another AMU+
    #16
  17. Jasper ST4

    Jasper ST4 Guest

    It probably just needs some TLC, it's very stock looking, even the side stand. That's probably a good sign, someone hasn't tinkered much with it but it's time for a good goin' over.

    The instrument panel and paint are in remarkable shape, it's probably always been garaged.

    I've had mine for 33 years so I'm biased but I like the aluminum air covers and '79 was the last of them.

    I you get it, ditch the stock brake pad, get a EBC HH and adjust it correctly, otherwise it's a mediocre performer on a good day.
    #17
  18. Big John Sny

    Big John Sny Been here awhile

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    I like that color. Same as my 77.
    #18
  19. RideDualSport.com

    RideDualSport.com TPB all the way

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    VW congratulations on the really good find! That is a beautiful bike that will shine like a gem with some gentle but deep cleaning. It is especially cool that the bike has not been mangled by a ham-fisted mechanic, stored outside, and is completely stock with factory accessories... It warms my heart to see a new life being breathed in to a piece of motorcycling history!
    Cheers!
    #19
  20. Wirespokes

    Wirespokes Beemerholics Anonymous

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    It oughta make a great cafe!
    #20