Custom Airhead

Discussion in 'Airheads' started by andoulli, Jun 4, 2010.

  1. andoulli

    andoulli CAJUN

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    Saw this on FleaBay and thought it was really well done. Clearly a parts bin restoration of sorts but the finished project has almost a factory look if you overlook the mix and match construction.

    [​IMG]
    #1
  2. andoulli

    andoulli CAJUN

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    This is a one of a kind BMW airhead.

    This BMW is built on a 1986 BMW R65 (big) frame with a singe sided swing arm. This frame has a frame brace plate installed at the steering head and polished frame braces were installed for stability. The bike engine, transmission, and rear drive have been completely torn down and rebuilt. The crankcase, transmission, and cylinder components have been glass beaded and look like they are brand new.

    The motor is a totally rebuilt high performance BMW R100 motor. The crankshaft was removed, cleaned, inspected, and re-installed. The lower end was rebuilt using stock components. The cylinders have been professionally milled, cc'ed, ported and polished for better flow and higher compression. The cylinder heads were dual plugged for better performance. It has OEM BMW factory racing 336 degree cams installed with new lifters, valve springs, and stainless steel pushrod tubes, all set to BMW specifications. A factory BMW oil cooler was installed at the same time. During the rebuild, OEM gaskets and seals were used. The electronic ignition system is stock but has Accel super coils and NGK solid core racing wires installed. The carburetors are 38mm flat slide Mikuni's with a modified air box. They have been dialed in perfectly. A 2 into 1 Supertrapp pipe was installed that has been hot jet coated with all new packing and hardware. This bike sounds incredible and it runs like a top.


    The transmission was also removed, opened, cleaned, glass beaded, and rebuilt. It features a factory BMW racing close ration gear set modified for greater durability and better shifting.


    The suspension has all been upgraded with an Ohlins rear monoshock that provides a nice smooth ride and great handling. The front setup is RaceTec front fork springs and cartridge fork emulators as well as an upper fork brace for added stability. You can definitely feel the difference in handling.


    The bike has a new beautiful gloss black paint job. The handlebars, frame, swingarm, center stand, and engine covers were all professionally powder coated and the bike was re-assembled with stainless steel hardware.


    Other components include a BMW R90S front cowl with a dark smoke zero gravity windscreen and the factory BMW Voltmeter and aftermarket oil temp gauge installed. It also has a factory 1st generation BMW 3/4 solo seat cowl with newly re-covered Corbin seat insert installed. A fresh set of Metzeler Lasertecs, Spiegler brake lines, and braking systems floating rotors and pads were all added as well.


    The bike has had only 1200 miles put on it since the restoration was completed. There is not a scratch on it and it looks brand new. There are no drivability issues, and this is a very easy bike to drive.


    This bike comes with its original owners manual and keys.





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    #2
  3. Wreckchecker

    Wreckchecker Ungeneer to broked stuff.

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    Congratulations on pulling off a VERY sweet looking custom!!!
    #3
  4. nycs10011

    nycs10011 Adventurer

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    Man I was salivating over this one too. Almost did something stupid and went for it.
    #4
  5. Half-Fast

    Half-Fast Been here awhile

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    What is the ebay item number?
    #5
  6. andoulli

    andoulli CAJUN

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    200475757919
    #6
  7. Bar None

    Bar None Candy Ass

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    Very nice air head. Interesting to see what it goes for on Ebay since it is hard to put a value on a custom like this. I imagine it has quite a bit of money and time in it that will not be recovered?
    #7
  8. Jasper ST4

    Jasper ST4 Guest

    Looks great, I like it, but some things are fluffed up a bit and some missing info.

    The cylinders have been shortened for better compression? What's the compression and how is it set to BMW specifications?

    Dual plugging does not always help, it depends on the shape of the combustion chamber, this looks like a later motor (could be different heads) so it probably doesn't help. The stainless pushrod tubes are nice, they tend to rust otherwise.
    Hope they have the right resistance for the electronic ignition.
    But is it practical for the street?
    Who the hell drives a motorcycle?
    #8
  9. wirewrkr

    wirewrkr the thread-killer

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    IT's on its second go round on Flebay, I guess $6500.00 wasn't enough last time.
    It's nice but not THAT nice.
    Can't wait to get this listed when it's done, I can even post build pics in the auction listing!
    Robert
    #9
  10. Hawk Medicine

    Hawk Medicine Coyote's Brother

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    I can easily imagine the amount of time and $$$$ spent in building that bike, because mine has cost a fortune, even after I subtracted the money that I made selling off parts from the donor bikes.

    That said, I think that $6500 is about the top of the market for a bike like that and if you bought it for that price, you'd be ginning a real bargain.

    The only thing that bothers me about the bike is the close ratio gearbox. I know that they're rare and expensive and all that but I can't imagine they it'd be much fun fighting you way through rush hour or holiday traffic on a bike set up with one. What a PIA....:eek1
    #10
  11. Wirespokes

    Wirespokes Beemerholics Anonymous

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    What would a close ratio box be worth? I never see them, so imagine it would be easy to sell - for a LOT. Seems easy enough to replace it with standard gearing.
    #11
  12. Qwik

    Qwik Adrenaline Addict

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    And that beast looks even better in Person!:evil
    #12
  13. IBGONE

    IBGONE Old, slow, and happy

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    Oh, c'mon, cut it out; you're just way too much fun. were you born this way, or did something terrible happen to you in your youth?
    #13
  14. Jasper ST4

    Jasper ST4 Guest

    We can't all be fun a holes like yourself. Sounds like you have the gift.
    #14
  15. AntonLargiader

    AntonLargiader Long timer

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    The 'close ration' (sic) gearbox ratios are shown on my gearing page. It's probably a pretty tall starting gear and then they're pretty close. 4th and 5th are the same as before. It wouldn't be my choice for a street bike.

    Sorry, but the Corbin seat is just fugly. Hopefully the original is included.

    Otherwise, looks like a fun bike. But it looks like it was built to sell, which just turns me off a bit. For instance, I wouldn't have chosen that seat or the Supercrapps, so why choose them for me?
    #15
  16. wirewrkr

    wirewrkr the thread-killer

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    The new EBAY listing for this GEM is underway, the RESERVE price is $9500.00
    OKAY, good luck on that. I really hope you get it.
    If you do, I'm gonna start building ALOT more bikes to sell.
    Robert
    #16
  17. Xcuvator

    Xcuvator Justa Venturer

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    I find myself wondering if the bike was built for sale, why the 1200miles? And if it was built to keep, why the sale? Something not ticky ticky right?
    Who knows, but it looks nice to me.
    When it doesn't sell, it will be interesting to see if there is a third go-around.
    #17
  18. wirewrkr

    wirewrkr the thread-killer

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    Yah but you don't "drive" a bike, and it doesn't have good "driveability"
    Puhlease.
    #18
  19. Hawk Medicine

    Hawk Medicine Coyote's Brother

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    IIRC, the last CR gear sets that I'm aware of were sold by Dr Curve (Jim Roche) maybe two years ago. That was when he had just begun disposing of his stash of rare parts and he wanted about $1500 for the set of NOS gears. Not the complete tranny. Just the 4-speed gear sets.

    I know that I ended up refusing the offer and they ended up going to Chris at San Jose BMW. I guess that he could confirm the selling price if he wanted to but all I know is that while they're a neat thing to have on a race bike, they're pretty useless on the street and that where I ride.

    Those CR gear sets have been NLA from BMW for a long time and I'd bet that theres a bunch of guys who'd dig deep, just to say that they own the last set set!
    #19
  20. Hawk Medicine

    Hawk Medicine Coyote's Brother

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    Having just finished a long term project bike, I am well aware that before the bike is ready for prime time, theres always a bunch of small details that need to be taken care of.

    You need to break in the engine, re-torque everything a couple of times , dial in the timing, jet the carbs, adjust chassis components, touch up the paint here and there. Fiddle, fiddle, fiddle... Ride.... Fiddle... Ride.... Fiddle.

    I just started breaking in my new top end and when I stopped for gas I discovered that my brand new locking /6 gas gap, had fallen apart. Now I have to fish the missing parts out of the tank and then reassemble the cap but if I had just paid someone big bucks for a ready-built hot rod Beemer, I might be a little pissed and I would definately want the seller to make good on the broken cap. :lol3 No... For me, seeing 1200 miles on the build makes me think that the builder has probably done his due diligence and that his performance claims and reliable.

    Lastly: Over the next year or so, we're going to see a lot of guys selling bikes, cars, homes, and other valuables that they never intended to let go of and the sales will be driven by our failing economy. There are a lot of people out of work in America and there are more joining the ranks every day.

    Oh, and $9500 for that bike is just nuts!
    #20