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Author Topic: Bob's 85 K100 Project  (Read 76210 times)

Offline bobvans

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Re: Bob's 85 K100 Project
« Reply #75 on: December 28, 2019, 11:55:08 AM »
Quote from: Martin on December 28, 2019, 03:26:08 AM
  :twothumbsupp BMW: 16 11 1 453 690  is the cap to tank gasket.
Regards Martin.

Thank you for confirming that, Martin!

Now that I look at the two gas caps I have, they both do have a "hard" rubber gasket around the bottom.  I'll go ahead and get a new one on order.
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  • Vancouver, WA. USA
  • '85 K100 (Red), '96 K1100RS (Graphite), '85 K100RS (Blue, "Project Bike")

Offline bobvans

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Re: Bob's 85 K100 Project
« Reply #76 on: December 28, 2019, 11:58:29 AM »
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  • Vancouver, WA. USA
  • '85 K100 (Red), '96 K1100RS (Graphite), '85 K100RS (Blue, "Project Bike")

Offline Laitch

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Re: Bob's 85 K100 Project
« Reply #77 on: December 28, 2019, 01:15:53 PM »
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  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline Martin

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Re: Bob's 85 K100 Project
« Reply #78 on: December 28, 2019, 01:23:38 PM »
I had a hardened gasket on a spare cap. I tried soaking it in ATF which didn't work. I then tried oil of wintergreen which after a couple of weeks soaking it softened up. However once removed from the wintergreen it soon hardened back up.
Regards Martin.
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  • North Lakes Queensland Australia
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Offline volador

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Re: Bob's 85 K100 Project
« Reply #79 on: December 28, 2019, 08:36:33 PM »
rejuvenate old rubber soak in 303 UV Protectant or latex-additive for concrete

probably add to your parts list Gasket set Fuel Tank 16119062461

save the trip to the locksmith http://www.kforum-tech.com/how-to/open-a-petrol-tank-cap-which-has-a-broken-lock.htm

and rekey the cylinder yourself

K Bike Keys

How to "Rekey" K-Bike Locks

Capital Cycle Neinman GKS Keys 51251233554

K-Bike Folding Keys 51251453659

eBay Capital Cycle

eBay Keys 4x

eBay Keys 2x
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  • NYC NY
  • 1991 K100RS 1993 K75S ABS
5 BOROUGHS SISYPHEAN SOCIETY  MAINTAINING THE OBSESSION

Offline bobvans

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Re: Bob's 85 K100 Project
« Reply #80 on: December 29, 2019, 05:58:50 AM »
Quote from: Laitch on December 28, 2019, 01:15:53 PM
Moist, mist or must?

Ha ha... I see what I did now! Doh!
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  • Vancouver, WA. USA
  • '85 K100 (Red), '96 K1100RS (Graphite), '85 K100RS (Blue, "Project Bike")

Offline bobvans

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Re: Bob's 85 K100 Project
« Reply #81 on: December 29, 2019, 02:14:59 PM »
Quote from: Martin on December 28, 2019, 01:23:38 PM
I had a hardened gasket on a spare cap. I tried soaking it in ATF which didn't work. I then tried oil of wintergreen which after a couple of weeks soaking it softened up. However once removed from the wintergreen it soon hardened back up.
Regards Martin.

Thanks, Martin... yea, I think I'll spring for a new one.  I think I'll replace the gasket on my red bike as well.
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  • Vancouver, WA. USA
  • '85 K100 (Red), '96 K1100RS (Graphite), '85 K100RS (Blue, "Project Bike")

Offline bobvans

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Re: Bob's 85 K100 Project
« Reply #82 on: December 29, 2019, 02:16:44 PM »
Quote from: volador on December 28, 2019, 08:36:33 PM


save the trip to the locksmith and rekey the cylinder yourself


Thank you for those amazing links!  You guys have done it all!
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  • Vancouver, WA. USA
  • '85 K100 (Red), '96 K1100RS (Graphite), '85 K100RS (Blue, "Project Bike")

Offline bobvans

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Re: Bob's 85 K100 Project
« Reply #83 on: December 29, 2019, 02:20:29 PM »
In between all the holiday festivities I managed to make a little progress on the tank cleaning.  I filled it about 1/4 full of old gas and sloshed it around... let it soak, sloshed some more.  Not there yet but a step closer.  I need to get in there and give the dirty areas a good scrub.


* Slosh 01.JPG (54.91 kB . 768x576 - viewed 733 times)


* Slosh 02.JPG (58.7 kB . 768x576 - viewed 740 times)


* Slosh 03.JPG (51.27 kB . 768x576 - viewed 731 times)
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  • Vancouver, WA. USA
  • '85 K100 (Red), '96 K1100RS (Graphite), '85 K100RS (Blue, "Project Bike")

Offline bobvans

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Re: Bob's 85 K100 Project
« Reply #84 on: January 02, 2020, 10:54:00 PM »
Did a bad thing today.  Started out good... ended bad.  I was getting into the tank cleaning.  Started scrubbing it last night with a scrubbing pad and some hand cleaner (for the garage).  Was getting some good results.  This morning I get the idea of using oven cleaner.  Sprayed some in the area that had some bad build up... and it made a good impact!  Started scrubbing around and seeing more really good improvement.  Sprayed some more and decided to let it soak for a while.  When I got back to it, the cleaner had basically taken the sheen from the inside of the tank where it was sprayed.  Turns out oven cleaner shouldn't be left on aluminum for very long.  OK for a quick scrub and rinse.  So here's what half of the tank looks like...


* IMG_1621.JPG (43.95 kB . 768x576 - viewed 711 times)

I gave the tank a good rinse and figure I'll continue to work on getting the junk out and not worry about the surface finish.  Seems as long as the lye is out of there it shouldn't do any harm having a dull, rough finish.  Anyone see a problem with that approach? 
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  • Vancouver, WA. USA
  • '85 K100 (Red), '96 K1100RS (Graphite), '85 K100RS (Blue, "Project Bike")

Offline volador

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Re: Bob's 85 K100 Project
« Reply #85 on: January 03, 2020, 02:03:30 AM »
Quote from: bobvans on January 02, 2020, 10:54:00 PM
I gave the tank a good rinse and figure I'll continue to work on getting the junk out and not worry about the surface finish.  Seems as long as the lye is out of there it shouldn't do any harm having a dull, rough finish.  Anyone see a problem with that approach? 

Look on the bright side you've created the perfect surface finish should you ever consider a tank liner like Red Kote
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  • NYC NY
  • 1991 K100RS 1993 K75S ABS
5 BOROUGHS SISYPHEAN SOCIETY  MAINTAINING THE OBSESSION

Offline Laitch

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Re: Bob's 85 K100 Project
« Reply #86 on: January 03, 2020, 05:49:01 AM »
Quote from: bobvans on January 02, 2020, 10:54:00 PM
I gave the tank a good rinse and figure I'll continue to work on getting the junk out and not worry about the surface finish.  Seems as long as the lye is out of there it shouldn't do any harm having a dull, rough finish.
The chemical reaction of aluminum to lye has degraded the protective surface coating of aluminum and made it less resistant to corrosion by water—not a desirable effect when using hydrophilic fuel like gasohol, or subjecting the moto to periodic idleness that could produce condensation. You might seriously consider coating the tank's interior.

Vinegar has been a popular choice here for breaking down and helping to eliminate goo and varnish in Brick fuel tanks. It works well.
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  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline bobvans

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Re: Bob's 85 K100 Project
« Reply #87 on: January 04, 2020, 03:02:54 AM »
Quote from: Laitch on January 03, 2020, 05:49:01 AM
The chemical reaction of aluminum to lye has degraded the protective surface coating of aluminum and made it less resistant to corrosion by water—not a desirable effect when using hydrophilic fuel like gasohol, or subjecting the moto to periodic idleness that could produce condensation. You might seriously consider coating the tank's interior.

Vinegar has been a popular choice here for breaking down and helping to eliminate goo and varnish in Brick fuel tanks. It works well.

I'll give the vinegar a try to get rid of the remaining contaminants... thank you!
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  • Vancouver, WA. USA
  • '85 K100 (Red), '96 K1100RS (Graphite), '85 K100RS (Blue, "Project Bike")

Offline alabrew

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Re: Bob's 85 K100 Project
« Reply #88 on: January 04, 2020, 12:10:06 PM »
Do yourself a favor and go ahead and seal the tank while you gotts it out and clean. I fought pin hole leaks this summer. Should have just gone ahead and done the full Red Kote first.
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  • Birmingham, Alabama
  • 1985 K100, 1991 K100RS
Also:
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1979 R65
200,000 miles on BMW motorcycles

Offline bobvans

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Re: Bob's 85 K100 Project
« Reply #89 on: January 09, 2020, 11:08:14 AM »
I stumbled across this Youtube series that I found both informational and inspirational.  It's a guy in New Zealand, I think, that got a K100 and turns it into a scrambler.  It's pretty detailed and shows ALOT of cleaning which is what inspired me.  Also lots of disassembly and some McGyver type of stuff.  There's a long series of these videos but he titles what he does in each of them.  Some of you may find this useful.. if not, entertaining.  He also does a Motogadget and shows a fair amount of detail to his approach.

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  • Vancouver, WA. USA
  • '85 K100 (Red), '96 K1100RS (Graphite), '85 K100RS (Blue, "Project Bike")

Offline bobvans

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Re: Bob's 85 K100 Project
« Reply #90 on: January 25, 2020, 06:31:08 PM »
I got ambitious this week and start doing some cleaning and removing of the lower fairings on the blue bike... simple stuff.  Started looking at how the front fairing was held on and looks like I need to loosen four bolts/screws and slide it off.  One thing I noticed is that the fairings are mounted pretty losely and not all hardware was used so it gave me the sense that the PO just threw them back on to make it look complete.  Here are a couple of pics of progress (not very impressive, I know)...


* IMG_1650.JPG (52.64 kB . 768x576 - viewed 599 times)


* IMG_1654.JPG (48.82 kB . 768x576 - viewed 613 times)


* IMG_1656.JPG (60.48 kB . 768x576 - viewed 571 times)


* IMG_1657.JPG (60.64 kB . 768x576 - viewed 581 times)

At first I thought this flip up latch was some how holding the front fairing on but now I'm thinking it's just to protect the head light adjuster?


* IMG_1658.JPG (60.14 kB . 768x576 - viewed 585 times)
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  • Vancouver, WA. USA
  • '85 K100 (Red), '96 K1100RS (Graphite), '85 K100RS (Blue, "Project Bike")

Offline mw074

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Re: Bob's 85 K100 Project
« Reply #91 on: January 25, 2020, 06:37:45 PM »
That lever is a headlight adjuster for when riding 2-up.
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  • Michigan

Offline mw074

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Re: Bob's 85 K100 Project
« Reply #92 on: January 25, 2020, 06:45:50 PM »
Point the bike at night at your garage door. Throw the lever and you will see how it functions.
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Offline Laitch

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Re: Bob's 85 K100 Project
« Reply #93 on: January 25, 2020, 06:57:05 PM »
To expand on mw074's post, here is the description from the k100 rider's manual downloadable from the site.
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  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline bobvans

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Re: Bob's 85 K100 Project
« Reply #94 on: January 25, 2020, 09:54:23 PM »
Quote from: Laitch on January 25, 2020, 06:57:05 PM
To expand on mw074's post, here is the description from the k100 rider's manual downloadable from the site.


Ahhh, that makes sense!  Thank you for clearing that up for me!
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  • Vancouver, WA. USA
  • '85 K100 (Red), '96 K1100RS (Graphite), '85 K100RS (Blue, "Project Bike")

Offline bobvans

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Re: Bob's 85 K100 Project
« Reply #95 on: January 25, 2020, 10:25:04 PM »
Something else I did this week is swap out the handlebars on my red bike for the RS handlebars.  They're quite a bit different!  Makes my old bars seem like ape hangers  :laughing4-giggles: 


* IMG_1669.JPG (93.32 kB . 768x576 - viewed 616 times)

* IMG_1670.JPG (62.53 kB . 768x576 - viewed 628 times)

* IMG_1679.JPG (75.83 kB . 768x576 - viewed 583 times)


* IMG_1677.JPG (61.1 kB . 768x576 - viewed 598 times)

Not quite sure if I have the handlebars in the right place... I left the handlebars loose, put the RS dash on, and positioned the handlebars to line the control clusters up with the dash extensions.  Then removed the dash and tightened up the bars.  Had to adjust the banjo bolts for the brake lines to allow the dask and the reservoir/controls to sit in the right position.


* IMG_1671.JPG (84.25 kB . 768x576 - viewed 600 times)

I've been wanting to get heated grips mounted so waiting until I had those so that I could do it all at the same time.  Ended up going with the Koso Apollo's because I liked the integrated switch.


* IMG_1685.JPG (52.2 kB . 768x576 - viewed 609 times)

* IMG_1687.JPG (56.88 kB . 768x576 - viewed 618 times)

Something else that happened over that past few weeks... there was a break in the weather so decided to ride into work.  Temp was high 30's but it was dry so thought, what the heck!  I must add that before that day, the bike has been feeling a bit more loose when I went over the tar snakes and creases in the road.  As I was turning off the freeway, the front tire looked a little weird as I was going around a slow long corner.  Tire was FLAT!  I've actually never checked pressure in the front tire because the one time I tried I wasn't able to get the air hose (with pressure gauge) onto the valve stem because of the rotors.  Bee lined to the tire shop for some air.  Guy said to watch the tire because the side walls were cracked.  Checked the internet for possible tires.  I've got a 160 Michelin Pilot Road 5 in the back on a K1200 wheel so wanted something close to the same.  There's not much selection in the 100/90R18 so checked the forum and learned the 110/80R18 is a good alternative and found many more options.  Closest match was a Michelin Pilot Road 3.  The local bike shop had two and he made me a good deal on them (old inventory) so I bought both.  Got it mounted and balanced but didn't have a chance to take it out until now.  WOW!  She turns in super easy now that I have a nice firm tire!  The smaller handlebars may also be contributing to this.  It's going to take a while to get used to this.



* IMG_1680.JPG (91.89 kB . 768x576 - viewed 601 times)

* IMG_1681.JPG (75.58 kB . 768x576 - viewed 600 times)

Here's a picture of the old handlebars for reference...


* IMG_0860.JPG (89.84 kB . 768x576 - viewed 628 times)
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  • Vancouver, WA. USA
  • '85 K100 (Red), '96 K1100RS (Graphite), '85 K100RS (Blue, "Project Bike")

Offline Laitch

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Re: Bob's 85 K100 Project
« Reply #96 on: January 25, 2020, 10:50:59 PM »
Quote from: bobvans on January 25, 2020, 10:25:04 PM
Not quite sure if I have the handlebars in the right place... I left the handlebars loose, put the RS dash on, and positioned the handlebars to line the control clusters up with the dash extensions.  Then removed the dash and tightened up the bars.  Had to adjust the banjo bolts for the brake lines to allow the dask and the reservoir/controls to sit in the right position.
There is more than 100mm difference in the length of an RS master cylinder hose compared with an RT master cylinder hose. I suggest replacing the hose with the correct size. With a moto that old, it's good practice to replace all the brake hoses anyway.

Put your red moto's model and year in your signature, too.
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  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline bobvans

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Re: Bob's 85 K100 Project
« Reply #97 on: January 25, 2020, 11:48:56 PM »
Quote from: Laitch on January 25, 2020, 10:50:59 PM
There is more than 100mm difference in the length of an RS master cylinder hose compared with an RT master cylinder hose. I suggest replacing the hose with the correct size. With a moto that old, it's good practice to replace all the brake hoses anyway.

Put your red moto's model and year in your signature, too.

The PO had replaced all the brake lines but that's a big difference in length.  I didn't like the big bend I have in there right now so good suggestion to replace it.

One thing I forgot to mention is that after I got the new handlebars loosely held in place, I noticed that I had the choke cable pinched in the bar clamps.  I didn't think it damaged anything but my choke light now stays on whether it's on or not so I need to sort that out.
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  • Vancouver, WA. USA
  • '85 K100 (Red), '96 K1100RS (Graphite), '85 K100RS (Blue, "Project Bike")

Offline bobvans

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Re: Bob's 85 K100 Project
« Reply #98 on: January 26, 2020, 02:47:38 PM »
While swapping out dash pads yesterday I noticed that one of the switches was actually wired up to something.  The switch itself didn't switch so I just cut the wire and completed the pad swap.  This morning I went out to see if I could pull power from those wires so took the meter out to the garage and tested the various combinations.  Found what I thought was power and ground, connected those to my heated grips and flipped the switch.  Turns out the wires were for 4 way flashers!  Never knew I had them!  Well, since the switch didn't work I really didn't but that's an easy fix.  Will buy a new switch to get that wired up.


* IMG_1688.JPG (44.57 kB . 768x576 - viewed 605 times)
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  • Vancouver, WA. USA
  • '85 K100 (Red), '96 K1100RS (Graphite), '85 K100RS (Blue, "Project Bike")

Offline bobvans

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Re: Bob's 85 K100 Project
« Reply #99 on: January 26, 2020, 04:07:50 PM »
Went to wire up my heated grips today.  Removed the tank and found the factory connector for the heated grips.  Would like to connect into that connector so was wondering if anyone knows the part number for the mating connector and terminals.  Thanks!


* IMG_1689.JPG (67.94 kB . 768x576 - viewed 605 times)
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  • Vancouver, WA. USA
  • '85 K100 (Red), '96 K1100RS (Graphite), '85 K100RS (Blue, "Project Bike")
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