Author Topic: The jiigan 1985K100 RS Thread  (Read 2058 times)

Offline jiigan

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The jiigan 1985K100 RS Thread
« on: December 30, 2018, 11:08:13 PM »
Hey guys,
First post. Just picked up a 1985 K100RS in pretty rough shape. Stripped it down and doing the basics for now. I opened the oil filter housing on the bottom of the engine and a bunch of oil came out (haven't taken the filter off yet) is this normal?
Also I am hearing a clicking sound from the area where the fuel injectors are, any thoughts?

Thank you in advance.
  • Los Angeles, CA
  • 1985 BMW K100RS

Offline mlytle

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Re: Oil from oil filter housing is this normal?
« Reply #1 on: December 30, 2018, 11:14:06 PM »
Yes. The oil filter is IN the sump, not outside.  That is why filters for K's don't have any stickers on the outside
  • alexandria, va
  • 92 K75s, 94 K75s, 96 K1100RS SE (custodian), 09 K1300s
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http://www.motobrick.com/index.php/topic,7810.0.html

Offline jiigan

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Re: Oil from oil filter housing is this normal?
« Reply #2 on: December 30, 2018, 11:19:00 PM »
Oh I see, thank you. That is a new one for me. I was used to Jap and Italian bikes before, even had a 2005 BMW R1200 and never came across this. I appreciate the response. What about clicking noise from injector area?
  • Los Angeles, CA
  • 1985 BMW K100RS

Online Scott_

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Re: Oil from oil filter housing is this normal?
« Reply #3 on: December 31, 2018, 09:36:49 AM »
Now that you have drained the oil getting to the filter, when you add the oil back in, use the center stand when checking the sight glass oil level--- not the side stand.
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1997 K1100LT 0302488
1995 K1100LT 0302044
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Offline billday

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Re: Oil from oil filter housing is this normal?
« Reply #4 on: January 01, 2019, 08:50:15 AM »
Show us your K bike!
  • New York State, USA 10977
  • 1985 K100

Offline jiigan

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Re: Oil from oil filter housing is this normal?
« Reply #5 on: January 01, 2019, 08:59:02 PM »
Here is the bike so far, pictures from when I picked it up and after stripping the plastics.
  • Los Angeles, CA
  • 1985 BMW K100RS

Offline jiigan

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Please help identify a yellow wire and a weird switch, thank you!
« Reply #6 on: January 01, 2019, 09:02:14 PM »
Hey Guys,
I picked up an 85 k100rs and started stripping it down. Came across a weird yellow wire that is out of place and a weird switch under the left side handlebar. Could you please help identify.

Thank you
  • Los Angeles, CA
  • 1985 BMW K100RS

Offline billday

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Re: Oil from oil filter housing is this normal?
« Reply #7 on: January 01, 2019, 09:06:10 PM »
It cleaned up nice.  What are your intentions?
  • New York State, USA 10977
  • 1985 K100

Offline jiigan

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Re: Oil from oil filter housing is this normal?
« Reply #8 on: January 01, 2019, 09:12:28 PM »
It was filthy but yet it cleaned up pretty well. I am working on doing a cafe racer type of build. So far just going through the hoses in the fuel tank and radiator, doing the basic maintenance, replacing spark plugs, injectors.
The bike has 70k miles, I got it to start but it was smoking a little. I am assuming because it was on center stand for a over a year.
  • Los Angeles, CA
  • 1985 BMW K100RS

Offline Laitch

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Re: Oil from oil filter housing is this normal?
« Reply #9 on: January 01, 2019, 09:25:54 PM »
I am assuming because it was on center stand for a over a year.
I don't think the center stand was the culprit. Many neglected engines will tend to smoke for a while after starting. Some K engines tend to smoke on startup when parked on the side stand regardless of how often they're run, so the center stand is used when they're parked to lessen that tendency.

Did you change the oil, fuel filter and fuel before you started it?
  • Along the Ridley in Vermont.
  • 1995 K75T 68,000 miles
I wept because I had no radials until I met a man who had no splines.
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Offline jiigan

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Re: Oil from oil filter housing is this normal?
« Reply #10 on: January 01, 2019, 09:33:41 PM »
I meant the side stand.. doh..
I didn't do anything before starting it just ran some seafoam in the gas. Wanted to make sure it starts before I start taking it apart. Since then I changed the plugs, fuel filter, oil filter.
  • Los Angeles, CA
  • 1985 BMW K100RS

Online Scott_

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Re: Please help identify a yellow wire and a weird switch, thank you!
« Reply #11 on: January 01, 2019, 09:56:46 PM »
I'd pull of the T cover and see how the wire is connected.
It could be alternate power to the HES sensors, it could be a anti-theft "kill switch", it could be most anything.....
Can't tell 100% till you know how each end is connected, both behind the cover and what is connected on the back of the switch.
  • My Garage
Ride safe.


1997 K1100LT 0302488
1995 K1100LT 0302044
Garmin StreetPilot 2820
Garmin Zumo 550
"One who does not ask questions is ashamed to learn" Danish proverb

Offline Chaos

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Re: Please help identify a yellow wire and a weird switch, thank you!
« Reply #12 on: January 01, 2019, 09:58:37 PM »
Have you tried flipping the switch when it's running?
  • sw ohio
1987 K75S    VIN 0231
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Offline Laitch

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Re: Oil from oil filter housing is this normal?
« Reply #13 on: January 01, 2019, 10:01:27 PM »
I recommend doing a compression test and a valve clearance check right now before proceeding with grinding and powdercoating, You might need some of your customization cash to restore the engine to full function. If you establish now that it works well, you'll be ahead in the game.
  • Along the Ridley in Vermont.
  • 1995 K75T 68,000 miles
I wept because I had no radials until I met a man who had no splines.
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Online The Mighty Gryphon

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Re: Oil from oil filter housing is this normal?
« Reply #14 on: January 01, 2019, 10:41:12 PM »
I recommend doing a compression test and a valve clearance check right now before proceeding with grinding and powdercoating, You might need some of your customization cash to restore the engine to full function. If you establish now that it works well, you'll be ahead in the game.

Laitch, it's a cafe build. 
  • In my garage in Marilla, NY
  • '94 K75RT Mystic Red, '91K100RS White/Blue
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'91 K100RS "Moby Brick Too

Offline Chaos

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Re: Oil from oil filter housing is this normal?
« Reply #15 on: January 01, 2019, 10:57:46 PM »
 :hehehe
  • sw ohio
1987 K75S    VIN 0231
Original owner, Original litter
200,000 miles (plus or minus) and 5 paint jobs
2012 Ural 2WD sidecar (BMW's bastard step child)

Offline jiigan

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Re: Oil from oil filter housing is this normal?
« Reply #16 on: January 01, 2019, 11:11:12 PM »
I recommend doing a compression test and a valve clearance check right now before proceeding with grinding and powdercoating, You might need some of your customization cash to restore the engine to full function. If you establish now that it works well, you'll be ahead in the game.

Thanks for the heads up, I am planning on doing the compression test soon. Didn't think about the valve clearance thought, probably a good idea.
  • Los Angeles, CA
  • 1985 BMW K100RS

Offline Laitch

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Re: Please help identify a yellow wire and a weird switch, thank you!
« Reply #17 on: January 02, 2019, 07:18:05 AM »
Have you tried flipping the switch when it's running?
:clap: Please video that moment, jiigan.
  • Along the Ridley in Vermont.
  • 1995 K75T 68,000 miles
I wept because I had no radials until I met a man who had no splines.
http://www.motobrick.com/index.php/topic,296.msg53303.html#msg53303

Offline jiigan

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Re: Please help identify a yellow wire and a weird switch, thank you!
« Reply #18 on: January 02, 2019, 01:05:17 PM »
Thanks for chiming in. Have not tried to mess with switch while running as I only found it after taking the bike apart. I will open the cover and see where the wire hooks up. The switch has 3 positions it can switch to as well as 3 wires in the back.
  • Los Angeles, CA
  • 1985 BMW K100RS

Offline jiigan

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Re: Please help identify a yellow wire and a weird switch, thank you!
« Reply #19 on: January 02, 2019, 11:08:44 PM »
I'd pull of the T cover and see how the wire is connected.
It could be alternate power to the HES sensors, it could be a anti-theft "kill switch", it could be most anything.....
Can't tell 100% till you know how each end is connected, both behind the cover and what is connected on the back of the switch.
Here is the picture of the cover removed and the back of the switch, any ideas?
  • Los Angeles, CA
  • 1985 BMW K100RS

Online Scott_

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Re: Please help identify a yellow wire and a weird switch, thank you!
« Reply #20 on: January 03, 2019, 07:06:51 AM »
Well, looking at the t cover spot, the wire doesn't connect to the HES so that throws out the thought of a security kill switch idea....... and it looks like it does not connect to the switch, so there are 2 different things to sort here...
Does your bike have a water temp gauge?
Follow the yellow wire to the end, I'd almost bet that it was added for a water temp gauge sensor. If I'm not mistaken water temp gauges were not stock on older RS bikes.

As far as the switch, does your bike have heated grips on it now?
  • My Garage
Ride safe.


1997 K1100LT 0302488
1995 K1100LT 0302044
Garmin StreetPilot 2820
Garmin Zumo 550
"One who does not ask questions is ashamed to learn" Danish proverb

Offline Martin

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Re: Please help identify a yellow wire and a weird switch, thank you!
« Reply #21 on: January 03, 2019, 12:30:23 PM »
The switch is next to the steering lock, so I'm guessing either anti theft kill switch or an alarm.
 Regards Martin.
  • North Lakes Queensland Australia
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Offline Andy FitzGibbon

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Re: Please help identify a yellow wire and a weird switch, thank you!
« Reply #22 on: January 19, 2019, 09:35:37 PM »
Maybe a high altitude switch for the Jetronic unit? The wire routing wouldn't suggest that, but I thought I would...

Andy
  • Montrose, WV
  • 1985 K100RS, 1972 R75/5, 2012 Suzuki DR650

Offline daveson

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Re: Please help identify a yellow wire and a weird switch, thank you!
« Reply #23 on: January 20, 2019, 03:34:01 AM »
Look under the water oil /pump to see what the yellow wire connects to.

Under the t cover it's running parallel to a brown green wire.  That wire has a single connector, looking at the wiring diagram that's for the oil pressure light, so oil pressure gauge another possibility.
  • Victoria, Australia
  • Current; 1985 bmw k100rt VIN 0090567 ('84 k100RT, 87 k100RT, '89 k100rt, '91k75s, '96 Kawasaki Vulcan 1500) Past; V Star 650, Kawasaki klx250, Yamaha tt250

Online The Mighty Gryphon

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Re: Please help identify a yellow wire and a weird switch, thank you!
« Reply #24 on: January 20, 2019, 10:42:37 AM »
Where is the end of the yellow wire?  Three weeks and still you haven't told us where it comes from and where it goes.  How the are we supposed to tell you what it's for?

Here's my guess based on what I've seen so far.  The switch is for a hyper drive that runs off two battery packs.  The switch lets you select Low power or high power for the hyper drive.

The yellow wire could be for reading the intermolecular spectromatic status of the plasmatron ferdorator in the hyper drive.  If the plasmatron gets too reverse fluxed, the drive goes into overload and there is no telling where you will come out.  That could be dangerous.  Has anyone removed the turbo vortex bifurcator?  That's another place where the yellow wire might go. 
  • In my garage in Marilla, NY
  • '94 K75RT Mystic Red, '91K100RS White/Blue
Current:
'94 K75RT "Ilsa, She Wolf of the SS"
'91 K100RS "Moby Brick Too

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