Author Topic: 1987 K100LT Resto - from bits to brick  (Read 2069 times)

Offline FlatSix

  • Motobrick Curious
  • Posts: 41
Re: 1987 K100LT Resto - from bits to brick
« Reply #25 on: July 10, 2019, 12:04:27 PM »
Not much done this week as I was out of town on vacation.

But I do have a question for the experts.  How does one go about installing these footpeg springs without losing an eye or messing up my freshly painted brackets?  Is there a trick to it? 

Should be able to pick up my freshly powdercoated wheels this week.

Dave
  • TX
  • K100LT
Dave in TX
1987 K100LT project
1971 Triumph Bonneville

Offline Laitch

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Re: 1987 K100LT Resto - from bits to brick
« Reply #26 on: July 10, 2019, 07:45:06 PM »
How does one go about installing these footpeg springs without losing an eye . . . 
Wear safety glasses.
  • Along the Ridley in Vermont.
  • 1995 K75T 72,000 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 FlatSix

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  • Posts: 41
Re: 1987 K100LT Resto - from bits to brick
« Reply #27 on: July 11, 2019, 09:14:53 AM »
  • TX
  • K100LT
Dave in TX
1987 K100LT project
1971 Triumph Bonneville

Offline Laitch

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Re: 1987 K100LT Resto - from bits to brick
« Reply #28 on: July 11, 2019, 10:24:31 AM »
°Salud! :_+:
  • Along the Ridley in Vermont.
  • 1995 K75T 72,000 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 FlatSix

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  • Posts: 41
Re: 1987 K100LT Resto - from bits to brick
« Reply #29 on: July 17, 2019, 12:40:12 PM »
Update:

I finally got the footpeg springs installed correctly.  Sure its a simple task and should only take a few minutes but one of the drawbacks of not disassembling the parts is that I donít intuitively know how they go back together.  So letís just say it took me a few extra minutes to figure out that there is a hole in the bottom of the footpeg for the spring to go in.  :yikes:

Got some parts in including the signal minder which I thought would be a good addition.  Still waiting on some parts and I donít want to remove the engine covers and redo them until some new bolts come in from overseas.  That has taken nearly a month but should be here soon.

I also modded the BMU to hopefully work with LED lights.  My plan if I can figure it out is to use as many LEDís as possible on the bike.  I got all LEDís on my Triumph and it works for the most part except the headlight flickers a little.  But it still works.  Hopefully I can get a better quality one and figure out how to prevent it for the K.

Thatís all for now.
  • TX
  • K100LT
Dave in TX
1987 K100LT project
1971 Triumph Bonneville

Offline Laitch

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Re: 1987 K100LT Resto - from bits to brick
« Reply #30 on: July 17, 2019, 01:20:20 PM »
I finally got the footpeg springs installed correctly.  . . . So letís just say it took me a few extra minutes to figure out that there is a hole in the bottom of the footpeg for the spring to go in.
Perhaps you could go into more detail about how you installed the foot pegs to help the next person who is assembling them from a box of parts. Thanks for the update.
  • Along the Ridley in Vermont.
  • 1995 K75T 72,000 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 billday

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Re: 1987 K100LT Resto - from bits to brick
« Reply #31 on: July 17, 2019, 01:38:35 PM »
I wanna see a picture of the M&M's Max sent you.

Actually, right now I want the M&M's.
  • New York State, USA 10977
  • 1985 K100

Offline alabrew

  • ^ Proficient Motobricker
  • Posts: 123
Re: 1987 K100LT Resto - from bits to brick
« Reply #32 on: July 17, 2019, 02:01:22 PM »
"Got some parts in including the signal minder which I thought would be a good addition."

Why do you need this? It should already have factory self canceling turn signals, or am I missing something...
  • Alabama
  • 1985 K100, 1991 K100RS
Also:
2005 K1200LT
1979 R65
200,000 miles on BMW motorcycles

Offline The Mighty Gryphon

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Re: 1987 K100LT Resto - from bits to brick
« Reply #33 on: July 17, 2019, 02:32:20 PM »
I wanna see a picture of the M&M's Max sent you.

Actually, right now I want the M&M's.

My last couple orders didn't include M&M's.  Got a bunch of MaxBMW stickers instead. :dunno
  • 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

Offline Laitch

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Re: 1987 K100LT Resto - from bits to brick
« Reply #34 on: July 17, 2019, 03:05:06 PM »
My last couple orders didn't include M&M's.  Got a bunch of MaxBMW stickers instead. :dunno
You also got free shipping, right? The M&Ms were nice but I like the free shipping better.
  • Along the Ridley in Vermont.
  • 1995 K75T 72,000 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 FlatSix

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  • Posts: 41
Re: 1987 K100LT Resto - from bits to brick
« Reply #35 on: July 17, 2019, 04:43:59 PM »
Perhaps you could go into more detail about how you installed the foot pegs to help the next person who is assembling them from a box of parts. Thanks for the update.

Good idea.  I will take a picture and follow up when I get home.

I wanna see a picture of the M&M's Max sent you.

Actually, right now I want the M&M's.

The M&Mís donít last long around my house!

"Got some parts in including the signal minder which I thought would be a good addition."

Why do you need this? It should already have factory self canceling turn signals, or am I missing something...

Iím not familiar enough with the BMW flashers yet to answer that however, it does also flash the signal indicators along with the brakes when you hit them.

Also, I forgot to mention still no wheels from the powdercoater.  I think I was right on not leaving the frame with him as well. 
  • TX
  • K100LT
Dave in TX
1987 K100LT project
1971 Triumph Bonneville

Offline alabrew

  • ^ Proficient Motobricker
  • Posts: 123
Re: 1987 K100LT Resto - from bits to brick
« Reply #36 on: July 17, 2019, 07:15:19 PM »
They are set up to cancel based on time and distance, which ever is longer. About 10 seconds on the interstate, about 500 ft at slower speeds.
  • Alabama
  • 1985 K100, 1991 K100RS
Also:
2005 K1200LT
1979 R65
200,000 miles on BMW motorcycles

Offline DJEwen

  • ^ Proficient Motobricker
  • Posts: 352
Re: 1987 K100LT Resto - from bits to brick
« Reply #37 on: July 18, 2019, 03:27:24 AM »
Update:

I finally got the footpeg springs installed correctly.  Sure its a simple task and should only take a few minutes but one of the drawbacks of not disassembling the parts is that I donít intuitively know how they go back together.  So letís just say it took me a few extra minutes to figure out that there is a hole in the bottom of the footpeg for the spring to go in.  :yikes:

Got some parts in including the signal minder which I thought would be a good addition.  Still waiting on some parts and I donít want to remove the engine covers and redo them until some new bolts come in from overseas.  That has taken nearly a month but should be here soon.

I also modded the BMU to hopefully work with LED lights.  My plan if I can figure it out is to use as many LEDís as possible on the bike.  I got all LEDís on my Triumph and it works for the most part except the headlight flickers a little.  But it still works.  Hopefully I can get a better quality one and figure out how to prevent it for the K.

Thatís all for now.

I feel your pain Dave, driving the old pins out initially then rebuilding everything after powder coat were two of the hardest tasks on my build. Well done.
  • Scotland
  • 1985 K100 'Revive', 1987 K100 LT

Offline FlatSix

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  • Posts: 41
Re: 1987 K100LT Resto - from bits to brick
« Reply #38 on: July 20, 2019, 07:21:23 PM »
Looks like I might have an issue.

Checking valve clearances and I have what appears to be a tight valve on #3 exhaust.  I rotated the engine to double check and same result.  Should I attempt to fix this or should I wait until I run the bike and then recheck?

  • TX
  • K100LT
Dave in TX
1987 K100LT project
1971 Triumph Bonneville

Offline Laitch

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  • Posts: 6757
Re: 1987 K100LT Resto - from bits to brick
« Reply #39 on: July 20, 2019, 10:32:43 PM »
Your moto's engine has a tight valve. The purpose of checking valve clearances is to determine if they meet specifications and set them to meet specifications if they don't. You must understand procedure thoroughly, work carefully and have confidence. Set the valve's clearance so it meets the spec: it's tight. Running the engine more won't set it correctly for you.

Others have run their clearance and shim calculations by us here and you could do that, too.
  • Along the Ridley in Vermont.
  • 1995 K75T 72,000 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 The Mighty Gryphon

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Re: 1987 K100LT Resto - from bits to brick
« Reply #40 on: July 20, 2019, 10:51:56 PM »
Pull the shim and check for the number printed on it, then get the next thinner one.  That will get you back in spec.
  • 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

Offline Laitch

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Re: 1987 K100LT Resto - from bits to brick
« Reply #41 on: July 20, 2019, 11:22:39 PM »
Pull the shim and check for the number printed on it, then get the next thinner one.  That will get you back in spec.
I don't think so. This is an exhaust valve. Shims are manufactured in 0.05 increments and the valve's current clearance is 0.10 out of spec.
  • Along the Ridley in Vermont.
  • 1995 K75T 72,000 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 SpecialK

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  • Posts: 82
Re: 1987 K100LT Resto - from bits to brick
« Reply #42 on: July 21, 2019, 04:24:52 PM »
Pull the shim and check for the number printed on it, then get the next thinner one.  That will get you back in spec.

I don't think so. This is an exhaust valve. Shims are manufactured in 0.05 increments and the valve's current clearance is 0.10 out of spec.

If it is 0.10mm out of spec, can't he just get the next two sizes down? So if his current shim is say 2.20mm he can get the 2.10mm shim? Never done it myself but I see the shims come 2.00mm - 3.00mm in 0.05 increments as Laitch says so it would seem to be the solution. Correct me if I'm missing something.
  • Wappingers Falls, New York
  • 1987 K100RS
"The first to present his case seems right, till another comes forward and questions him". Proverbs 18:17

Offline Laitch

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Re: 1987 K100LT Resto - from bits to brick
« Reply #43 on: July 21, 2019, 04:34:03 PM »
If it is 0.10mm out of spec, can't he just get the next two sizes down? Correct me if I'm missing something.
You're missing what I wrote, that is, 0.05 + 0.05 = 0.10 the amount needed to return the clearance to specification. If you've reasoned that a shim 0.10 less in thickness should be substituted, you are correct.

If the size isn't on the current shim, it will need measurement. A micrometer will provide the most accuracy.
  • Along the Ridley in Vermont.
  • 1995 K75T 72,000 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 FlatSix

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  • Posts: 41
Re: 1987 K100LT Resto - from bits to brick
« Reply #44 on: July 21, 2019, 06:31:39 PM »
Thank you all for the advice.  I ordered the tools from Ken Lively and looks like I will be adjusting the clearance once the tools come in and I can remove the current shim.  And I was so close, it was the very last valve I checked and I thought I was going to be good.  But alas that's how it goes. 

Did give me a little time to work on repainting the engine covers and my guess is I won't be able to button up the engine for a few weeks now. In the meantime I will start working on something else.  Perhaps the brake calipers which need a complete rebuild on all of them. 
  • TX
  • K100LT
Dave in TX
1987 K100LT project
1971 Triumph Bonneville

Offline Laitch

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Re: 1987 K100LT Resto - from bits to brick
« Reply #45 on: July 21, 2019, 06:51:06 PM »
And I was so close, it was the very last valve I checked and I thought I was going to be good.  But alas that's how it goes. 
Rejoice that it goes with replacing just shims instead of buckets like on the 16V models. Shims less costly than OEM are available here.
  • Along the Ridley in Vermont.
  • 1995 K75T 72,000 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 FlatSix

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  • Posts: 41
Re: 1987 K100LT Resto - from bits to brick
« Reply #46 on: July 21, 2019, 08:26:38 PM »
Rejoice that it goes with replacing just shims instead of buckets like on the 16V models. Shims less costly than OEM are available here.

Thanks for the link!
  • TX
  • K100LT
Dave in TX
1987 K100LT project
1971 Triumph Bonneville

Offline billday

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Re: 1987 K100LT Resto - from bits to brick
« Reply #47 on: July 21, 2019, 08:35:01 PM »
When you figure out what you need, ask here. Someone might have one in their old parts bucket.

Also, note that many old Yamahas use the same size shim, which opens up more possible sources.
  • New York State, USA 10977
  • 1985 K100

Offline The Mighty Gryphon

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Re: 1987 K100LT Resto - from bits to brick
« Reply #48 on: July 21, 2019, 11:24:07 PM »
When you get it out, post the size.  I have a bunch of them laying in my tool chest.  One of them might work for you.
  • 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

Offline FlatSix

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  • Posts: 41
Re: 1987 K100LT Resto - from bits to brick
« Reply #49 on: July 22, 2019, 09:35:02 AM »
When you get it out, post the size.  I have a bunch of them laying in my tool chest.  One of them might work for you.

Thank you very much!

The tools are on order so I took advantage of the break to work on refinishing the timing chain, camshaft and crankshaft covers.  I guess it is true that the obstacle is the way, the impediment to action enhances action. 

In case anyone needs to order the same or a few other tools Ken was quick to respond.  His info is below:

Polepenhollow Valve Tools and Clutch Pilots
pelopenhollow@yahoo.com

The covers required some sanding, careful masking the paint and clear high temp semi-gloss.  I think they came out OK but not perfect.  A little dust flew into the garage and shows in the picture but they were dry and cured at that point. 

More parts arrived at the end of last week including the two new tires.  Powdercoater says the wheels are ready so I will be picking them up soon.  We shall see!

  • TX
  • K100LT
Dave in TX
1987 K100LT project
1971 Triumph Bonneville

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