Author Topic: 1987 K100LT Resto - from bits to brick  (Read 65274 times)

Offline FlatSix

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Re: 1987 K100LT Resto - from bits to brick
« Reply #175 on: April 20, 2020, 02:03:39 PM »
Howdy folks. 

Surviving the pandemic and doing some work on the projects.  Spent some time refinishing the windshield, going after it more aggressively with sandpaper and then polishing it.  Turned out acceptable.  Not sure what I was hoping for because perfect was never in the cards, but I will put it on the bike and most likely be happy with it. 

Tried to fire up the bike for the first time last weekend.  No joy...  She lit up and lights, turn signals, horn, etc. all worked fine.  Sounded like the starter was turning but she didn't sound like she wanted to fire.  I'm sure there is something I am missing. 

That's all for now.

Dave
  • TX
  • K100LT
Dave in TX
1987 K100LT project
1971 Triumph Bonneville -sold to a couple young female tattoo artists

Offline Martin

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Re: 1987 K100LT Resto - from bits to brick
« Reply #176 on: April 20, 2020, 04:17:03 PM »
Meguiars Plastx and a new cotton mop on a buff does a good job on finishing screens.
Regards Martin.
  • North Lakes Queensland Australia
  • 1992 K75s Hybrid, Lefaux, Vespa V twin.

Offline FlatSix

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Re: 1987 K100LT Resto - from bits to brick
« Reply #177 on: April 23, 2020, 09:16:57 AM »
Meguiars Plastx and a new cotton mop on a buff does a good job on finishing screens.
Regards Martin.

Thanks Martin.  After looking at it again I'm not unhappy with it.  I will probably spray it with some 2K clear (or tinted) and be done with it.

What I am hoping to get some expert advise on is the non-starting issue.  I took a short video and I will attach it below.  The starter spins but the engine isn't turning.  I am pretty concerned whatever the issue is will involve major work and darn if I don't really need more disappointment right now.  Anyway if you gents have any advice it would be greatly appreciated.



Thanks,

Dave
  • TX
  • K100LT
Dave in TX
1987 K100LT project
1971 Triumph Bonneville -sold to a couple young female tattoo artists

Offline The Mighty Gryphon

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Re: 1987 K100LT Resto - from bits to brick
« Reply #178 on: April 23, 2020, 10:45:29 AM »
I'm gonna suggest that you do a search on "sprag problems".  Yours doesn't sound like it's engaging to spin the engine. 

Lots of different suggestions for ways to get it working.  First thing to try is a "backspin". 
  • In my garage in Marilla, NY
  • '91K100RS White/Blue
Current:
'91 K100RS16V "Moby Brick Too"

Past:
'94 K75RT "Ilsa, She Wolf of the SS"
'92 K100RS16V "Moby Brick" (RIP, deceased in a vehicular assault)
'94 K75S Special Edition Dakar Yellow "Cheetos"
'89 K100RS Special Edition "Special Ed"

Offline Past-my-Prime

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Re: 1987 K100LT Resto - from bits to brick
« Reply #179 on: April 23, 2020, 11:42:15 AM »
Have you disassembled and reassembled the starter? If so, you have at least an even chance it was put together backwards and now is spinning backwards. As I have read on various threads here that others have  experienced.
  • North Shore of Lake Superior (in my garage)
  • BRICK: 1989 K75 RT - Rocinante; NON-BRICK: 2007 F650 GS Dakar - Betty Blue

Offline FlatSix

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Re: 1987 K100LT Resto - from bits to brick
« Reply #180 on: April 23, 2020, 01:37:49 PM »
I'm gonna suggest that you do a search on "sprag problems".  Yours doesn't sound like it's engaging to spin the engine. 

Lots of different suggestions for ways to get it working.  First thing to try is a "backspin". 

Thanks TMG been "Googling" and searching.  Learn something new every day!

Have you disassembled and reassembled the starter? If so, you have at least an even chance it was put together backwards and now is spinning backwards. As I have read on various threads here that others have  experienced.

Damn!  I did rebuild the starter.  Actually I hope I was bonehead enough to do that and I can fix it.
  • TX
  • K100LT
Dave in TX
1987 K100LT project
1971 Triumph Bonneville -sold to a couple young female tattoo artists

Offline The Mighty Gryphon

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Re: 1987 K100LT Resto - from bits to brick
« Reply #181 on: April 23, 2020, 03:23:01 PM »
Backwards reassembly is pretty easy to do.  No need to ask...
  • In my garage in Marilla, NY
  • '91K100RS White/Blue
Current:
'91 K100RS16V "Moby Brick Too"

Past:
'94 K75RT "Ilsa, She Wolf of the SS"
'92 K100RS16V "Moby Brick" (RIP, deceased in a vehicular assault)
'94 K75S Special Edition Dakar Yellow "Cheetos"
'89 K100RS Special Edition "Special Ed"
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Offline Martin

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Re: 1987 K100LT Resto - from bits to brick
« Reply #182 on: April 23, 2020, 05:04:52 PM »
FS my non OEM acrylic screen is over twenty years old and is in really excellent condition. When it started looking a little bit tatty 5-6 years ago I just carefully buffed it with PlastX using  a new cotton mop on my 6" bench grinder. Since then a just clean it occasionally with a glass window cleaner friendly to plastic Earth Choice. I then treat it with a product called Dy-mark PlasGuard  anti static plastic and Perspex conditioner which is a cleaner, protectant and polish for clear and coloured Perspex. It is also good for visors as it is anti fogging which is not a problem encountered in QLD. The PlastGuard was recommended and sold to me by a guy who used to work a lot with Perspex.  I only use it on my windscreen and visors, Perspex needs to be cleaned and treated with products that are friendly to Perspex, never use cleaners containing silicone.
Regards Martin.
  • North Lakes Queensland Australia
  • 1992 K75s Hybrid, Lefaux, Vespa V twin.

Offline FlatSix

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Re: 1987 K100LT Resto - from bits to brick
« Reply #183 on: April 24, 2020, 03:53:10 PM »
FS my non OEM acrylic screen is over twenty years old and is in really excellent condition. When it started looking a little bit tatty 5-6 years ago I just carefully buffed it with PlastX using  a new cotton mop on my 6" bench grinder. Since then a just clean it occasionally with a glass window cleaner friendly to plastic Earth Choice. I then treat it with a product called Dy-mark PlasGuard  anti static plastic and Perspex conditioner which is a cleaner, protectant and polish for clear and coloured Perspex. It is also good for visors as it is anti fogging which is not a problem encountered in QLD. The PlastGuard was recommended and sold to me by a guy who used to work a lot with Perspex.  I only use it on my windscreen and visors, Perspex needs to be cleaned and treated with products that are friendly to Perspex, never use cleaners containing silicone.
Regards Martin.

Thanks Martin.  The one I have was too far gone for PlastX to work.  I used it and it made an improvement but I needed to get slightly more midieval on it and use the sander.  I think for now it's going to be OK until I happen upon a new or used excellent condition one to replace it.

For my non-starting situation I am going to pull the starter and go from there.  See if I buggered it up when I rebuilt it.  Frankly I hope so

Dave
  • TX
  • K100LT
Dave in TX
1987 K100LT project
1971 Triumph Bonneville -sold to a couple young female tattoo artists

Offline FlatSix

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Re: 1987 K100LT Resto - from bits to brick
« Reply #184 on: May 04, 2020, 10:40:54 AM »
Update:

I must give credit and thank Past-my-prime for pointing out the possibility of rebuilding the starter to spin backwards.  It appears that I did just that.  It was an easier fix than dealing with the sprag clutch issue (which I got to learn a lot about in the past week).



Dave
  • TX
  • K100LT
Dave in TX
1987 K100LT project
1971 Triumph Bonneville -sold to a couple young female tattoo artists

Offline volador

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Re: 1987 K100LT Resto - from bits to brick
« Reply #185 on: May 04, 2020, 11:32:06 AM »
Congrats! The sweet sound of the inline 4. Ride on & keep the shiny side up
  • NYC NY
  • 1991 K100RS 1993 K75S ABS
5 BOROUGHS SISYPHEAN SOCIETY  MAINTAINING THE OBSESSION

Offline FlatSix

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Re: 1987 K100LT Resto - from bits to brick
« Reply #186 on: June 26, 2020, 10:27:36 AM »
Finally got my parts back from the painter.  The virus situation hasn't seemed to slow down his business as much as I would have expected and it took him a while to get around to painting my plastic. 

I also broke down and simply ordered a newly made windscreen.  Crossing my fingers because it's been a month and still showing "in production" we will see.

Does anyone know the part number of the roundel that goes on the front fairing of the LT?  The replacement one I ordered wasn't right and I ruined it trying to install it.  The curve was too much I think.  So I am sure it was the wrong part.

Stay safe folks.
  • TX
  • K100LT
Dave in TX
1987 K100LT project
1971 Triumph Bonneville -sold to a couple young female tattoo artists

Offline FlatSix

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Re: 1987 K100LT Resto - from bits to brick
« Reply #187 on: July 13, 2020, 04:31:07 PM »
Howdy folks.  Still "hunkering down" here but I did get my new windscreen delivered and I am very pleased with the outcome.  Went with a light tint on it as well.  Took about 3-4 weeks total from order to delivery from Skidmarx and so far so good. 

Dave
  • TX
  • K100LT
Dave in TX
1987 K100LT project
1971 Triumph Bonneville -sold to a couple young female tattoo artists

Offline Laitch

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Re: 1987 K100LT Resto - from bits to brick
« Reply #188 on: July 15, 2020, 08:15:39 AM »
I did get my new windscreen delivered and I am very pleased with the outcome.
It looks like it throws the moto off-balance.
  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles
I wept because I had no radials until I met a man who had no splines.
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Offline Martin

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Re: 1987 K100LT Resto - from bits to brick
« Reply #189 on: July 15, 2020, 04:29:44 PM »
You get more floor space if you hang stuff on the wall. icon_cheers
Regards Martin
  • North Lakes Queensland Australia
  • 1992 K75s Hybrid, Lefaux, Vespa V twin.

Offline FlatSix

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Re: 1987 K100LT Resto - from bits to brick
« Reply #190 on: July 15, 2020, 05:26:16 PM »
Sorry gents my pictures were fine on my laptop but now sideways...but it is 2020 and the whole darn world is off kilter. 
  • TX
  • K100LT
Dave in TX
1987 K100LT project
1971 Triumph Bonneville -sold to a couple young female tattoo artists

Offline Laitch

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Re: 1987 K100LT Resto - from bits to brick
« Reply #191 on: July 15, 2020, 05:59:11 PM »
On-kilterness begins at home.
  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles
I wept because I had no radials until I met a man who had no splines.
https://tinyurl.com/RillRider

Offline FlatSix

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Re: 1987 K100LT Resto - from bits to brick
« Reply #192 on: August 03, 2020, 09:43:09 AM »
Good day,

Moved the bike(s) around this weekend and put air in the tires as the K was low.  Been sitting on the center stand for months.  Ready for the inaugural ride and off to the DMV to get tags and boom, not start.  Darn it the bike started two weeks ago when my brother in law came over to borrow a helmet (well, I just donated one to him) for his "M" license class and test.  Got a new Schuberth helmet with integrated intercom that I need to start using anyway. 

But I must have done something because now I get no sounds when I try to turn over the bike.  Lights on the dash come on but no headlight and no sound from the starter and I don't think any sound from the fuel pump either.  No idea what I have done but it is vastly disappointing.

But heck she looks good.  I think I need to lose the backrest.  And get the tank painted.

Dave
  • TX
  • K100LT
Dave in TX
1987 K100LT project
1971 Triumph Bonneville -sold to a couple young female tattoo artists

Offline The Mighty Gryphon

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Re: 1987 K100LT Resto - from bits to brick
« Reply #193 on: August 03, 2020, 11:47:29 AM »
1987 with 60,000 miles?  Have you cleaned the ignition switch?  The switch on my K75RT crapped out at about the same point in it's life.

http://www.eilenberger.net/K75S/IgnitionSwitch/

Bike looks really nice!
  • In my garage in Marilla, NY
  • '91K100RS White/Blue
Current:
'91 K100RS16V "Moby Brick Too"

Past:
'94 K75RT "Ilsa, She Wolf of the SS"
'92 K100RS16V "Moby Brick" (RIP, deceased in a vehicular assault)
'94 K75S Special Edition Dakar Yellow "Cheetos"
'89 K100RS Special Edition "Special Ed"

Offline FlatSix

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Re: 1987 K100LT Resto - from bits to brick
« Reply #194 on: August 03, 2020, 11:56:41 AM »
Thanks Gryphon.  Not that it couldn't crap out but it is a brand new ignition switch.  The one that came with the bike had a broken button and after trying to figure out how to replace the little plastic button I just decided for the sake of reliability to just buy a new one. 
  • TX
  • K100LT
Dave in TX
1987 K100LT project
1971 Triumph Bonneville -sold to a couple young female tattoo artists

Offline The Mighty Gryphon

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Re: 1987 K100LT Resto - from bits to brick
« Reply #195 on: August 03, 2020, 12:12:50 PM »
I'm talking about the key switch.  Your symptoms sound just like what mine did when the switch stopped working.
  • In my garage in Marilla, NY
  • '91K100RS White/Blue
Current:
'91 K100RS16V "Moby Brick Too"

Past:
'94 K75RT "Ilsa, She Wolf of the SS"
'92 K100RS16V "Moby Brick" (RIP, deceased in a vehicular assault)
'94 K75S Special Edition Dakar Yellow "Cheetos"
'89 K100RS Special Edition "Special Ed"

Offline FlatSix

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Re: 1987 K100LT Resto - from bits to brick
« Reply #196 on: August 03, 2020, 12:18:59 PM »
Aha!  Thanks for the link, I will give that a try first.  Hope that it is it.
  • TX
  • K100LT
Dave in TX
1987 K100LT project
1971 Triumph Bonneville -sold to a couple young female tattoo artists

Offline The Mighty Gryphon

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Re: 1987 K100LT Resto - from bits to brick
« Reply #197 on: August 03, 2020, 12:26:06 PM »
Good luck!  Remove the switch from the bike before you take it apart or you will spend a day crawling around looking for those little springs. 

Even if it isn't the problem, it's a job that needs to be done for the reliability of the bike.
  • In my garage in Marilla, NY
  • '91K100RS White/Blue
Current:
'91 K100RS16V "Moby Brick Too"

Past:
'94 K75RT "Ilsa, She Wolf of the SS"
'92 K100RS16V "Moby Brick" (RIP, deceased in a vehicular assault)
'94 K75S Special Edition Dakar Yellow "Cheetos"
'89 K100RS Special Edition "Special Ed"

Offline FlatSix

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Re: 1987 K100LT Resto - from bits to brick
« Reply #198 on: August 17, 2020, 12:13:07 PM »
We are on the road again!  Thanks...TMG

I did figure something out on my own that was slightly frustrating.  I was idling high, like 1500, and decided to adjust hot idle so I ran her around to warm up and tried to adjust hot idle and it wasn't going any lower.  In fact it seemed to want to stay even higher unless I pressed down on the idle adjustment screw.  I though perhaps it was the TPS hanging it up so I tried adjusting and I was hearing the click when coming off idle before and no adjustment amount would allow the idle to reset back without me pushing down on the idle screw.  So I reset the TPS and after much staring and poking around I realized I was getting some interference from an intake clamp screw with the throttle cable cam.  It's not easy to get to some of those screws but I did manage to adjust it so that there isn't any more interference. Works now, but I still am idling around 1000 and I would like to get it down to 900.  This is all part of the shake down for me but happy to be riding her around!
  • TX
  • K100LT
Dave in TX
1987 K100LT project
1971 Triumph Bonneville -sold to a couple young female tattoo artists

Offline The Mighty Gryphon

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Re: 1987 K100LT Resto - from bits to brick
« Reply #199 on: August 17, 2020, 01:39:42 PM »
 112350

Have you done a throttle body balance?  If you haven't, it might be a good idea. 

I would set the idle air screw on cylinder #4, the one with the vacuum line to the fuel pressure regulator, to 1 1/4 to 1 1/2 turns out from lightly bottomed.  Then balance the other cylinders to have the same vacuum as #4.  That should get you close to the factory setting and the proper idle speed.
  • In my garage in Marilla, NY
  • '91K100RS White/Blue
Current:
'91 K100RS16V "Moby Brick Too"

Past:
'94 K75RT "Ilsa, She Wolf of the SS"
'92 K100RS16V "Moby Brick" (RIP, deceased in a vehicular assault)
'94 K75S Special Edition Dakar Yellow "Cheetos"
'89 K100RS Special Edition "Special Ed"

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