Author Topic: Conventional but unconventional- My k100 build  (Read 174842 times)

Offline jjs1234

  • ^ Proficient Motobricker
  • Posts: 409
Conventional but unconventional- My k100 build
« on: April 16, 2016, 04:08:53 PM »
Hello, Im currently about 50-70% through my build.  100% I have wanted to create a thread for sometime (and sort of did on the k100 forum), but instead have just been working on it instead of posting.


READ FARTHER FOR PICTURES!!


Some major milestones that still need to happen:


-Put together
-Tank/tail painted
-Speedo wired
-Seat Reupholstered



Has been completed:

-Tail light has been changed but- in a way is still stock. Got rid of the side markers and re-integrated into the taillight.
-Engine is back together
-Colors have been chosen (red, metallic gold and black)
-100 percent of parts ordered
-65% Reassembled
-Waiting on RIMS and VALVE COVERS to get back from powdercoater.
  • Northern California
  • 1984 K100
Check out my build! Complete tear-down!
Mr. Creative

Offline jjs1234

  • ^ Proficient Motobricker
  • Posts: 409
Re: Conventional but unconventional- My k100 build
« Reply #1 on: April 17, 2016, 06:52:31 PM »
When I first got:


So I decided I wanted to get a k100 after some research. I enjoyed the fact that I could build something from scratch and add my own creativity to it.

Note: These pictures are from January 2016, so I am paraphrasing my build.


The k100 had been sitting for a good amount of time since it was dropped off (the title says donation)- approx 5 years in a covered warehouse. I knew much had to be done and at this point I yet had to come up with an idea of how I wanted to build it.

Miles: 47,287- If you count the 10% inaccuracy of the speedo, its more like 42,558 miles.


These are the first pictures I took before I bought it:



  • Northern California
  • 1984 K100
Check out my build! Complete tear-down!
Mr. Creative

Offline F14CRAZY

  • ^ Quintessential Motobricker
  • Posts: 1091
Re: Conventional but unconventional- My k100 build
« Reply #2 on: April 17, 2016, 07:42:03 PM »
It's to my understanding that the speedometer comes from the factory with it's like 10% inaccuracy but the odometer is quite accurate
  • Grand Rapids, MI
  • '87 K75C
'87 K75C w/ Pichler V1 fairing. LED's, CATZ driving lights, Audiovox cruise, LT top case, tons of other mods by Drake...


Offline Chaos

  • Administrator
  • ^ Quintessential Motobricker
  • Posts: 3157
  • Mars needs women!
Re: Conventional but unconventional- My k100 build
« Reply #3 on: April 17, 2016, 08:07:41 PM »
That's an 85, otherwise know as "the finest year K" Often the speedo and odo stopped working, mileage is suspect. 
  • sw ohio
1987 K75S    VIN 0231
Original owner, Original litter
200,000 miles (plus or minus) and 5 paint jobs
sold 6/23
2023 Ural 2WD sidecar (BMW's bastard step child)

Offline jjs1234

  • ^ Proficient Motobricker
  • Posts: 409
Re: Conventional but unconventional- My k100 build
« Reply #4 on: April 17, 2016, 10:03:17 PM »
Jan 29 2016:

Getting her home and more-in-depth look + fairing dismantle...


So after getting the dealer to prove she ran, I paid the 900$. My first plan was to get her home- driving approx 200mi to Reno. On the summit, it began to rain and snow.

That was fun!

Also at this point, I felt it better to remove all of the fairing. I liked the travel cases and was against chopping the frame. Its from a bygone era and does not suit what I have in mind for her. I also purchased a Zanadu headlight that I liked and pretty much got for free when I picked her up. I also bought a handlebar switch and clutch lever assembly on Ebay- it was missing.

The fairing was cracked and broke further as I was removing it.

Problems:

- Oil Pan/Sump covered in oil + Unknown leaks
- Broken Engine Breather tube and Fuel lines (plus they were very hard and ridged)
- Seat and the tires are old and cracked
- Buttons (Both handlebars) are sticky and non-responsive
(Also this was that problem I encountered later on when the engine wouldn't start- it was because the starter button was assembled in-correctly)


I knew at this point I was going to replace almost everything that had some sort of wear on it and the rubbers...

But I wanted to do this, this is fun to me

Pics:








































  • Northern California
  • 1984 K100
Check out my build! Complete tear-down!
Mr. Creative

Offline Laitch

  • Faster than a speeding pullet
  • Administrator
  • ^ Quintessential Motobricker
  • Posts: 11233
Re: Conventional but unconventional- My k100 build
« Reply #5 on: April 17, 2016, 11:31:56 PM »
In Xanadu did Khubla Khan a stately pleasure dome decree: where Alph, the sacred river, ran through caverns measureless to man. It looks like this bike may have been submerged in Alph mud for a while. Is this the bike with the rear drive housing that you carved into with a grinder, and that was scheduled for a fork transplant?

  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline jjs1234

  • ^ Proficient Motobricker
  • Posts: 409
Re: Conventional but unconventional- My k100 build
« Reply #6 on: April 17, 2016, 11:48:59 PM »
Yes.

I found out that the holes do not lead into the drive-shaft housing (where the gear fluid lies). Therefore any shavings that fell into the holes will not get into the actual housing.

It is having its seals replaced at the dealer now too (the final-drive).


Yep its scheduled for a fork transplant. Ive already got the new Master brake cyl. on Ebay along with some other things too!
  • Northern California
  • 1984 K100
Check out my build! Complete tear-down!
Mr. Creative

Offline jjs1234

  • ^ Proficient Motobricker
  • Posts: 409
Re: Conventional but unconventional- My k100 build
« Reply #7 on: April 19, 2016, 10:41:25 AM »
Random Question:

So googling "Bmw K100 Reliability" brought up a webpage by Bertrand Vogel (http://hrsbstaff.ednet.ns.ca/bvogel/K100/K100.htm).

Anyway half-way down he mentions something about the "spring" on the output-shaft. How they have a tendency to go bad or wear out the hole causing issues...

This is his photo:


These are MINE:




They look similar to me. Also its interesting to note that the spring-ring has "mushed" into the head of the rivet...

What happens if this spring fails and should I replace?


Thanks!
  • Northern California
  • 1984 K100
Check out my build! Complete tear-down!
Mr. Creative

Offline Laitch

  • Faster than a speeding pullet
  • Administrator
  • ^ Quintessential Motobricker
  • Posts: 11233
Re: Conventional but unconventional- My k100 build
« Reply #8 on: April 19, 2016, 11:08:49 AM »
It's already failing.
  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline jjs1234

  • ^ Proficient Motobricker
  • Posts: 409
Re: Conventional but unconventional- My k100 build
« Reply #9 on: April 19, 2016, 11:11:10 AM »
It's already failing.

Thanks Laitch!

Ill get er done! Anything else I should replace when the bearing is off?

Rivets feel secure
  • Northern California
  • 1984 K100
Check out my build! Complete tear-down!
Mr. Creative

Offline Laitch

  • Faster than a speeding pullet
  • Administrator
  • ^ Quintessential Motobricker
  • Posts: 11233
Re: Conventional but unconventional- My k100 build
« Reply #10 on: April 19, 2016, 11:44:49 AM »
You'll need to disassemble, measure, and analyze everything in the case—in consultation with someone who is experienced—to determine what needs replacing, pretty much like Vogel's work pictured on his website.

I'm basing my opinion on your photo in comparison with a photo and comment from someone who is skilled, even though your photos and his are not made in the same perspective at same stage of disassembly. 
  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline jjs1234

  • ^ Proficient Motobricker
  • Posts: 409
Re: Conventional but unconventional- My k100 build
« Reply #11 on: April 23, 2016, 05:46:10 PM »
You'll need to disassemble, measure, and analyze everything in the case—in consultation with someone who is experienced—to determine what needs replacing, pretty much like Vogel's work pictured on his website.

I'm basing my opinion on your photo in comparison with a photo and comment from someone who is skilled, even though your photos and his are not made in the same perspective at same stage of disassembly.
I'm taking it to the dealer to replace today.

Also got this in the mail:



Gold k100 placards. A nice finishing touch!

Sent from my HUAWEI MT7-L09 using Tapatalk

  • Northern California
  • 1984 K100
Check out my build! Complete tear-down!
Mr. Creative

Offline jjs1234

  • ^ Proficient Motobricker
  • Posts: 409
Re: Conventional but unconventional- My k100 build
« Reply #12 on: April 26, 2016, 02:01:31 AM »

April 24 2016:

Did a little wiring today. Mostly on the wiring harness. Cleaning up the old wrappings and protective tubing. Replacing with heat-shink and then a second layer of split-tubing insulation. Looks quite nice.

Something to do while waiting for painting weather and other parts k1100 components and blasting...

Clutch friction plate measures 5mm.




Sent from my HUAWEI MT7-L09 using Tapatalk

  • Northern California
  • 1984 K100
Check out my build! Complete tear-down!
Mr. Creative

Offline jjs1234

  • ^ Proficient Motobricker
  • Posts: 409
Re: Conventional but unconventional- My k100 build
« Reply #13 on: April 26, 2016, 09:36:00 PM »
Just got some more stuff sandblasted. Gearbox, crash bars, water pump and the center stand.



Sent from my HUAWEI MT7-L09 using Tapatalk

  • Northern California
  • 1984 K100
Check out my build! Complete tear-down!
Mr. Creative

Offline jjs1234

  • ^ Proficient Motobricker
  • Posts: 409
Re: Conventional but unconventional- My k100 build
« Reply #14 on: April 28, 2016, 02:07:13 AM »
Did a little more wiring today. I have a ton of pictures I need to post as I am quite far along and have skipped a ton of pictures (teardown and paint)

Also purchased a bep 2.0 to with with my Acewell


Sent from my HUAWEI MT7-L09 using Tapatalk

  • Northern California
  • 1984 K100
Check out my build! Complete tear-down!
Mr. Creative

Offline jjs1234

  • ^ Proficient Motobricker
  • Posts: 409
Re: Conventional but unconventional- My k100 build
« Reply #15 on: April 28, 2016, 10:13:26 PM »
More to come soon!!!!...

  • Northern California
  • 1984 K100
Check out my build! Complete tear-down!
Mr. Creative

Offline jjs1234

  • ^ Proficient Motobricker
  • Posts: 409
Re: Conventional but unconventional- My k100 build
« Reply #16 on: May 07, 2016, 02:12:00 PM »
Bought a k1100 front rim with both rotors for $150 Inc shipping. My BMW ship has a rear rim that's slightly bent along the lip. Here in Reno there seems to be a place that repairs rims thinking about buying it and giving it a go.

Also the same seller that sold me the front rim has also a front end in stock too.

He says that the seals leak and there's some surface rust on the tubes. A good time to rebuild it I suppose. Is it possible just to sand off the rust on the tubes or should I replace them?

Sent from my HUAWEI MT7-L09 using Tapatalk

  • Northern California
  • 1984 K100
Check out my build! Complete tear-down!
Mr. Creative

Offline jjs1234

  • ^ Proficient Motobricker
  • Posts: 409
Re: Conventional but unconventional- My k100 build
« Reply #17 on: May 07, 2016, 02:13:43 PM »
  • Northern California
  • 1984 K100
Check out my build! Complete tear-down!
Mr. Creative

Offline jjs1234

  • ^ Proficient Motobricker
  • Posts: 409
Re: Conventional but unconventional- My k100 build
« Reply #18 on: May 08, 2016, 07:00:57 PM »
Got my output shaft back today. The Idler gear was actually worn into, but luckily the mechanic had a spare one just lying around. You'll see what I mean with the pictures. I also picked up a rear rim of an r1100rt. 4.5x18.


Also it came with a bearing but I believe it to be the wrong type as it had a different lip:
  • Northern California
  • 1984 K100
Check out my build! Complete tear-down!
Mr. Creative

Offline johnny

  • TrailBrakingThrottleWhacker
  • ^ Quintessential Motobricker
  • Posts: 7652
  • Whacking...n...Chopping Sliding...n...High Siding
Re: Conventional but unconventional- My k100 build
« Reply #19 on: May 08, 2016, 07:11:25 PM »
greetings jjs1234...

thats whack... keep it going...

j o
  • :johnny i parks my 96 eleven hundert rs motobrick in dodge county cheezconsin  :johnny

Offline jjs1234

  • ^ Proficient Motobricker
  • Posts: 409
Re: Conventional but unconventional- My k100 build
« Reply #20 on: May 08, 2016, 07:15:32 PM »
Thanks Johnny, I know. I wonder what type of conditions would've made It fail in this way...

Also a picture of the tire that I picked up ( has a minor dent in the lip which I plan on getting it fixed):

  • Northern California
  • 1984 K100
Check out my build! Complete tear-down!
Mr. Creative

Offline johnny

  • TrailBrakingThrottleWhacker
  • ^ Quintessential Motobricker
  • Posts: 7652
  • Whacking...n...Chopping Sliding...n...High Siding
Re: Conventional but unconventional- My k100 build
« Reply #21 on: May 08, 2016, 07:26:28 PM »
show me the f-ed-up lip... i may gotts some help for you...
  • :johnny i parks my 96 eleven hundert rs motobrick in dodge county cheezconsin  :johnny

Offline jjs1234

  • ^ Proficient Motobricker
  • Posts: 409
Re: Conventional but unconventional- My k100 build
« Reply #22 on: May 08, 2016, 08:12:53 PM »


Also random question, do you know where this rubber o-ring goes to? It's the same diameter as the c-clip on the needle bearing on the output shaft

Sent from my HUAWEI MT7-L09 using Tapatalk

  • Northern California
  • 1984 K100
Check out my build! Complete tear-down!
Mr. Creative

Offline johnny

  • TrailBrakingThrottleWhacker
  • ^ Quintessential Motobricker
  • Posts: 7652
  • Whacking...n...Chopping Sliding...n...High Siding
Re: Conventional but unconventional- My k100 build
« Reply #23 on: May 08, 2016, 08:29:58 PM »
rodger that... common occurrence...

this it what i would do... and if you try it and it works... yeeeehaaaaaa... if you try it and it doesnt work you gotta send it out anyway...

leave tior on wheel... inflate to 10 pounds over max on sidewall... strap wheel to 2@ 4 x 4s with bad lip facing up... make sure 1@ 4 x 4 is opposite the bad lip...

strap a 2 x 4 about 6" long to the lip... 1 strap on the left side of the 2 x 4 and 1 strap to the right side of the 2 x 4... im talking nylon ratchet straps... figger it out so the ratchet in on the 2 x 4 and not near your wheel when absolutely tight...

need a big freaking sledge... whack it in the middle of the 2 x 4...

the 4 x 4s stable the back side... the 2 x 4 spreads out the whack... butts the most force is on the bad lip... the bead helps keep the lip proper and not deform...

i betts it will take 2 or 3 whacks to make it right... just go slow and be methodical... have done 3@ 3 spoke wheels like this after paying a wheel straightener to do the same... i saw his table... this is how he did it...

the only thing is if its not true... a trueing table will be necessary... be wary of wheels straighteners... most use a dial gage and mapp gass with a rubber hammer... not so good for these wheels...

some wheels require heat... these bmw wheels do not like heat...

j o

  • :johnny i parks my 96 eleven hundert rs motobrick in dodge county cheezconsin  :johnny

Offline jjs1234

  • ^ Proficient Motobricker
  • Posts: 409
Re: Conventional but unconventional- My k100 build
« Reply #24 on: May 08, 2016, 08:36:34 PM »
It came with the used output shaft housing, and I'm scratching my head. I've kept track of every part and was thinking what the heck. The manual says nothing about a oring.

Whatever. I got a spare needle bearing too. Apparently BMW is trying to phase it out it something. 6 weeks on backorder...

Sent from my HUAWEI MT7-L09 using Tapatalk

  • Northern California
  • 1984 K100
Check out my build! Complete tear-down!
Mr. Creative

Tags: