Author Topic: Awakening 1987 K100RS from 10 year slumber.  (Read 8937 times)

Offline Laitch

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Re: Awakening 1987 K100RS from 10 year slumber.
« Reply #50 on: July 04, 2019, 06:54:19 PM »
I was turning forward. I didn't think to move to a higher gear, thought first would be easiest T
You never had a chance to roll it in gear before then? Regardless, all's well that ends well. Correctly gap the plugs. Are those new plugs?
  • Along the Ridley in Vermont.
  • 1995 K75 72,000 miles
I wept because I had no radials until I met a man who had no splines.
https://tinyurl.com/RillRider

Offline The Mighty Gryphon

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Re: Awakening 1987 K100RS from 10 year slumber.
« Reply #51 on: July 04, 2019, 09:23:44 PM »
First gear is the hardest to turn the engine from the rear wheel.  On my bikes it's almost impossible.  I put the transmission in 4th or 5th to turn the engine over with the rear wheel.

Spend some money on new plugs.  NGK D7EA are about 3 bucks ay NAPA or Carquest/Advanced.  The modern Bosch are made in India or Turkey or some such place.  You will need the terminal nuts for them.  Get those from a shop that repairs small engines.
  • In my garage in Marilla, NY
  • '94 K75RT Mystic Red, '91K100RS White/Blue, '89 K100RS Special edition White/Blue
Current:
'94 K75RT "Ilsa, She Wolf of the SS"
'91 K100RS "Moby Brick Too
'89 K100RS SE

Offline SpecialK

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Re: Awakening 1987 K100RS from 10 year slumber.
« Reply #52 on: July 05, 2019, 06:52:42 AM »
You never had a chance to roll it in gear before then? Regardless, all's well that ends well. Correctly gap the plugs. Are those new plugs?

I didn't think to roll it in gear to check piston movement, was more concerned with other things at the time. I will be getting new plugs today.
  • 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 The Mighty Gryphon

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Re: Awakening 1987 K100RS from 10 year slumber.
« Reply #53 on: July 05, 2019, 08:35:52 AM »
I will be getting new plugs today.

I screwed up, you need D7EA not the ones I mentioned.  I have edited my original post.
  • In my garage in Marilla, NY
  • '94 K75RT Mystic Red, '91K100RS White/Blue, '89 K100RS Special edition White/Blue
Current:
'94 K75RT "Ilsa, She Wolf of the SS"
'91 K100RS "Moby Brick Too
'89 K100RS SE

Offline SpecialK

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Re: Awakening 1987 K100RS from 10 year slumber.
« Reply #54 on: July 05, 2019, 08:37:45 AM »
I screwed up, you need D7EA not the ones I mentioned.  I have edited my original post.
First gear is the hardest to turn the engine from the rear wheel.  On my bikes it's almost impossible.  I put the transmission in 4th or 5th to turn the engine over with the rear wheel.

Spend some money on new plugs.  NGK DR7EA are about 3 bucks ay NAPA or Carquest/Advanced.  The modern Bosch are made in India or Turkey or some such place.  You will need the terminal nuts for them.  Get those from a shop that repairs small engines.

According to the EME website the NGK DR7EA is for K100 90-94 (although it does cross reference with Bosch X5DC) so do you know if it's good with the K100 1987? I like the term you use "terminal nuts", sound more accurate than "cap thingy" I have seen elsewhere.

  • 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 SpecialK

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Re: Awakening 1987 K100RS from 10 year slumber.
« Reply #55 on: July 05, 2019, 08:46:42 AM »
Gryphon, You said you meant the NGK D7EA. Is there a difference with the DR7EA? They don't show a D7EA on the EME website
  • 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 The Mighty Gryphon

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Re: Awakening 1987 K100RS from 10 year slumber.
« Reply #56 on: July 05, 2019, 10:06:05 AM »
The ignition system needs some resistance(about 5k ohms) to limit the current in the coils to prevent burning them out(and limit radio interference).  2 valve K bikes(75 and 100) have resistor wires so they use non-resister plugs.  The correct NGK for those bikes is the D7EA. 

4 valve K bikes (late model 100 and 1100) have non-resister wires so they need resistor plugs.  The correct NGK plug for those bikes is the DR7EA.   I hope it is obvious that the "R" indicates a resistor plug.  Terminal nuts is the NGK term for "cap thingies".

  • In my garage in Marilla, NY
  • '94 K75RT Mystic Red, '91K100RS White/Blue, '89 K100RS Special edition White/Blue
Current:
'94 K75RT "Ilsa, She Wolf of the SS"
'91 K100RS "Moby Brick Too
'89 K100RS SE

Offline SpecialK

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Re: Awakening 1987 K100RS from 10 year slumber.
« Reply #57 on: July 05, 2019, 10:53:34 AM »
Cool, I am going to get the D7EA now at Advance. NGK lists as a 7912. I went to MAX BMW here in CT. but they acted like they didn't want to help with such petty things.
Thanks
  • 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 johnny

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Re: Awakening 1987 K100RS from 10 year slumber.
« Reply #58 on: July 05, 2019, 12:32:27 PM »
greetings...

bosche xr7ldc... 60+ thou miles and still look like the day they went in there...


* boche.jpg (31.59 kB . 524x576 - viewed 104 times)

its like each cylinder is double plugged by oak...  if you needs to hoe shot... these will getts you down the road like a 4 holer...

doo your own doodillergence...


* X5DC.png (20.52 kB . 721x477 - viewed 90 times)


* xr7ldc.png (13.26 kB . 639x390 - viewed 92 times)

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

Offline Laitch

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Re: Awakening 1987 K100RS from 10 year slumber.
« Reply #59 on: July 05, 2019, 01:21:09 PM »
Retrospective bilateral exchangeability has been socially acceptable in Vermont for years.
  • Along the Ridley in Vermont.
  • 1995 K75 72,000 miles
I wept because I had no radials until I met a man who had no splines.
https://tinyurl.com/RillRider

Offline SpecialK

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Re: Awakening 1987 K100RS from 10 year slumber.
« Reply #60 on: July 05, 2019, 01:23:09 PM »
greetings...

bosche xr7ldc... 60+ thou miles and still look like the day they went in there...


* boche.jpg (31.59 kB . 524x576 - viewed 104 times)

its like each cylinder is double plugged by oak...  if you needs to hoe shot... these will getts you down the road like a 4 holer...

doo your own doodillergence...


* X5DC.png (20.52 kB . 721x477 - viewed 90 times)


* xr7ldc.png (13.26 kB . 639x390 - viewed 92 times)

j o

Thanks Johnny. Since my bike is the earlier 1987 2 valve K100RS, I went with the non-resistive equivalent to the Bosch X5DC which is the NGK D7EA.
  • 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 billday

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Re: Awakening 1987 K100RS from 10 year slumber.
« Reply #61 on: July 05, 2019, 06:10:41 PM »
  Terminal nuts is the NGK term for "cap thingies".

Terminal nuts is what I'm surrounded by.

  • New York State, USA 10977
  • 1985 K100

Offline The Mighty Gryphon

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Re: Awakening 1987 K100RS from 10 year slumber.
« Reply #62 on: July 05, 2019, 06:31:28 PM »
Terminal nuts is what I'm surrounded by.

Hey!  I resemble that remark.
  • In my garage in Marilla, NY
  • '94 K75RT Mystic Red, '91K100RS White/Blue, '89 K100RS Special edition White/Blue
Current:
'94 K75RT "Ilsa, She Wolf of the SS"
'91 K100RS "Moby Brick Too
'89 K100RS SE

Offline SpecialK

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Re: Awakening 1987 K100RS from 10 year slumber.
« Reply #63 on: July 05, 2019, 08:30:50 PM »
Speaking of terminal nuts, I can't find any. I may just spend $15 on another set of plugs that come with them.
Having a hell of a time getting the new fuel pump, filter, and hoses in the tank. Try screwing on a hose clamp inside the tank with one hand! Any tricks?
  • 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 daveson

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Re: Awakening 1987 K100RS from 10 year slumber.
« Reply #64 on: July 05, 2019, 08:57:11 PM »
Patience, a long screw driver and grit your teeth.  Make sure your tongue is not in the way.
  • Victoria, Australia
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Offline Martin

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Re: Awakening 1987 K100RS from 10 year slumber.
« Reply #65 on: July 05, 2019, 09:31:07 PM »
Your local mower repair shop is normally a good source of terminal nuts.
Regards Martin.
  • North Lakes Queensland Australia
  • 1992 K75s Hybrid, Lefaux, Vespa V twin.

Offline Laitch

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Re: Awakening 1987 K100RS from 10 year slumber.
« Reply #66 on: July 05, 2019, 09:44:20 PM »
Try screwing on a hose clamp inside the tank with one hand! Any tricks?
That's pretty much what must be done. daveson has accurately described the procedure. I use fuel injection hose clamps that are sized to fit the hose because they tighten more smoothly than the typical slotted band clamp. That helps when working one-handed. They also grip positively and don't damage the hose. Even BMW acknowledges in their service manual that people with large hands might need help from somebody with smaller hands to complete the procedure.
  • Along the Ridley in Vermont.
  • 1995 K75 72,000 miles
I wept because I had no radials until I met a man who had no splines.
https://tinyurl.com/RillRider

Offline SpecialK

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Re: Awakening 1987 K100RS from 10 year slumber.
« Reply #67 on: July 05, 2019, 10:08:42 PM »
Patience, a long screw driver and grit your teeth.  Make sure your tongue is not in the way.

Thanks Daveson, that pretty much describes what I did. Fortunately I had the long slotted screwdriver or else I would have had to go buy one.
  • 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 The Mighty Gryphon

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Re: Awakening 1987 K100RS from 10 year slumber.
« Reply #68 on: July 05, 2019, 10:09:47 PM »
I use fuel injection line clamps like Laitch has posted that have a hex on the screw.  A 1/4" drive ratchet with a long extension and a socket sized for the screw's hex makes tightening the clamps less frustrating since the socket stays on the screw a lot better than a screwdriver.

And when it slips it doesn't punch a hole in your finger.
  • In my garage in Marilla, NY
  • '94 K75RT Mystic Red, '91K100RS White/Blue, '89 K100RS Special edition White/Blue
Current:
'94 K75RT "Ilsa, She Wolf of the SS"
'91 K100RS "Moby Brick Too
'89 K100RS SE

Offline SpecialK

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Re: Awakening 1987 K100RS from 10 year slumber.
« Reply #69 on: July 05, 2019, 10:17:38 PM »
Laitch, the clamps I got from EME with the pump kit are the type you show so no hose damage here.

The only thing I could have done better was use a shorter piece of fuel line between the filter and the nipple to the fuel rail. It should be ok, not kinked or anything.

Tomorrow I can fit the tank back on, hook up the battery and module and see if it starts.........


* IMG_0001.jpg (37.31 kB . 768x576 - viewed 86 times)

* IMG_0002.jpg (39.71 kB . 768x576 - viewed 91 times)

* IMG_0004.jpg (31.45 kB . 768x576 - viewed 101 times)
  • 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 SpecialK

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Re: Awakening 1987 K100RS from 10 year slumber.
« Reply #70 on: July 05, 2019, 10:26:46 PM »
I use fuel injection line clamps like Laitch has posted that have a hex on the screw.  A 1/4" drive ratchet with a long extension and a socket sized for the screw's hex makes tightening the clamps less frustrating since the socket stays on the screw a lot better than a screwdriver.

The clamps have the hex head and I thought of using a socket but I don't have the 1/4" with extension.
  • 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 The Mighty Gryphon

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Re: Awakening 1987 K100RS from 10 year slumber.
« Reply #71 on: July 06, 2019, 09:25:11 AM »
The clamps have the hex head and I thought of using a socket but I don't have the 1/4" with extension.

!/4" drive is my tool of choice, I save the heavier artillery for the stuff it won't handle.  I use it about twice as much as the other two sizes combined.

Harbor Freight has a 1/4" drive set with SAE and Metric sockets for under 20 bucks and a set of extensions for 1/4", 3/8" and 1/2" for something like $15.
  • In my garage in Marilla, NY
  • '94 K75RT Mystic Red, '91K100RS White/Blue, '89 K100RS Special edition White/Blue
Current:
'94 K75RT "Ilsa, She Wolf of the SS"
'91 K100RS "Moby Brick Too
'89 K100RS SE

Offline Sheff928

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Re: Awakening 1987 K100RS from 10 year slumber.
« Reply #72 on: July 06, 2019, 11:04:28 AM »
I'd go for the  1/4" drive flex extension type to give a bit more... flexibility  :)
https://www.amazon.com/Neiko-00239A-Flexible-Extension-Piece/dp/B001223OF8

Kindest regards,

Kevin
  • UK
  • K1100RS 1993

Offline SpecialK

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Re: Awakening 1987 K100RS from 10 year slumber.
« Reply #73 on: July 06, 2019, 12:14:53 PM »
Update: I fitted the fuel pump in the tank, connected the battery and fuel injector module,  connected tank wiring for gauge/pump, refit the two hoses on the front left side of the tank, put tank back on and filled about 2 gallons of fuel. All lights came on so I wheeled the bike outside, put choke on the first stop and pressed the starter. The bike cranked but didn't turn over and start. Repeated several times with more choke and no choke but still not starting or even sputtering to start.

So I will rest for now  until I can try again later. The low (red) fuel light was on but the gauge read about 1/4 so There should be enough fuel.
Any ideas?

Thanks, John
  • 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: Awakening 1987 K100RS from 10 year slumber.
« Reply #74 on: July 06, 2019, 12:57:22 PM »
Any ideas?
Two gallons is enough to start and run it. Check a spark plug after cranking. Is it wet or dry? If electrical connections are ok, you'll hear the pump run for a second or two when you release the starter button. If you don't hear it, reconnect the four-pin connector and verify that the fuel pump's fuse (#6 counting from the top) is ok. Verify the fuel filter is oriented in the correct direction. Verify that all hose connections are tight. Verify that the outside fuel hose to the rail is connected to the rearward tank port and the return hose is connected to the forward port. Verify that the plug wires are connected to the correct coils.
  • Along the Ridley in Vermont.
  • 1995 K75 72,000 miles
I wept because I had no radials until I met a man who had no splines.
https://tinyurl.com/RillRider

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