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Author Topic: 92 K75 RT project .  (Read 2438 times)

Offline beemuker

  • ^ Quintessential Motobricker
  • Posts: 1110
92 K75 RT project .
« on: July 22, 2023, 11:28:19 AM »

Picked this up yesterday
Has all the parts (even the handbook) except tank internals.
New battery.
Rear brake master inoperable and crusty. front works, Made it much safer to get it off the trailer .
Tires almost 20 years old (but plenty of tread left, haha)
14,000 miles?
For starters I’m going to need fuel pump and filter, fuel float, and brake master kit or Chinese replacement.
My brother in LA picked up a Corbin for me for $50
Ordered one of these

https://www.ebay.com/itm/382895896581?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=kYKKEvdtTXy&sssrc=2047675&ssuid=2vOKUNeGT2G&widget_ver=artemis&media=COPY

And this


https://www.ebay.com/itm/382307941512?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=YFsJgTc4R8q&sssrc=2047675&ssuid=2vOKUNeGT2G&widget_ver=artemis&media=COPY

If and when I get it started I’ll see about tires and brake lines .

Looking forward to having a brick again.

I can’t believe I got “such a deal”. Almost ashamed that I paid less than a set of tires for this moto and  I know that the purchase is only the beginning, but …….




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  • Panama City, FL
  • '00 R1100RT,’92 K75 RT,past tense:'83 R80ST, '93 K1100LT,,94 R1100RS K75s, Honda NC700, Suzuki Bandit 1200, bmw R75/5 Honda 750

Offline Rcgreaves

  • ^ SuperNatural Motobricker
  • Posts: 973
  • "I'd rather be flying, but this will do nicely"
Re: 92 K75 RT project .
« Reply #1 on: July 22, 2023, 11:54:43 AM »
That seems like a terrific find! Congratulations!  looky Morobrikers, something to discuss!!! Rise from the dead!  Seriously now: fond greetings to all my acquaintances in the asylum.
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  • Livingston in Southwest WI. USA-"With the good earth all around."
  • 94' K75S, 85' GL1200 Aspencade, 96' VFR750F, 01' GL1800. Restoring: 95' K1100RS, 83' R80RT NEW: Motorvation Formula II
Doing “better than I deserve"

Offline The Mighty Gryphon

  • Administrator
  • ^ Quintessential Motobricker
  • Posts: 6658
Re: 92 K75 RT project .
« Reply #2 on: July 22, 2023, 12:00:21 PM »
Oh, Crap!  These recent post here are starting to give me a case of the dreaded K-pox. 

Must.  Avoid.  Craig's.  List.
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  • 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 beemuker

  • ^ Quintessential Motobricker
  • Posts: 1110
Re: 92 K75 RT project .
« Reply #3 on: July 22, 2023, 03:02:03 PM »
Quote from: The Mighty Gryphon on July 22, 2023, 12:00:21 PM
Oh, Crap!  These recent post here are starting to give me a case of the dreaded K-pox. 

Must.  Avoid.  Craig's.  List.
Better stay away from FB  and MOA too. I found this one on MOA marketplace. Last 2 I bought were on FB>
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  • Panama City, FL
  • '00 R1100RT,’92 K75 RT,past tense:'83 R80ST, '93 K1100LT,,94 R1100RS K75s, Honda NC700, Suzuki Bandit 1200, bmw R75/5 Honda 750

Offline The Mighty Gryphon

  • Administrator
  • ^ Quintessential Motobricker
  • Posts: 6658
Re: 92 K75 RT project .
« Reply #4 on: July 22, 2023, 03:59:06 PM »
Must.  Be.  Strong. 

OMG, I don't really need this bike.

https://minneapolis.craigslist.org/ank/mcy/d/minneapolis-bmw-k1100lt/7645104195.html

Mystic Red paint looks pristine, even on the luggage.
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  • 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 matjas

  • ^ Motobrick Curious
  • Posts: 87
Re: 92 K75 RT project .
« Reply #5 on: July 22, 2023, 05:03:47 PM »
Seems like you got the itch. Will you get the scratch? :) :) :)
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  • Poland
  • K1100LT

Offline The Mighty Gryphon

  • Administrator
  • ^ Quintessential Motobricker
  • Posts: 6658
Re: 92 K75 RT project .
« Reply #6 on: July 22, 2023, 05:21:18 PM »
I hope not.  My wife refuses to park her car outside the garage in the winter.
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  • 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 matjas

  • ^ Motobrick Curious
  • Posts: 87
Re: 92 K75 RT project .
« Reply #7 on: July 22, 2023, 05:24:31 PM »
Parking cars in the garage in the winter introduces plenty of unwanted moisture into the enclosed environment and this can and WILL cause everything to rust - you don’t want your garden scissors rusty, do you?

Was the route I went. 8 bikes in two garages, two cars in one garden. For me that is the way to go ;)
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  • Poland
  • K1100LT

Offline beemuker

  • ^ Quintessential Motobricker
  • Posts: 1110
Re: 92 K75 RT project .
« Reply #8 on: July 22, 2023, 08:42:37 PM »

My first challenge. Rebuild? Replace?
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  • Panama City, FL
  • '00 R1100RT,’92 K75 RT,past tense:'83 R80ST, '93 K1100LT,,94 R1100RS K75s, Honda NC700, Suzuki Bandit 1200, bmw R75/5 Honda 750

Offline frankenduck

  • Adrninistrator
  • ^ Quintessential Motobricker
  • Posts: 5028
Re: 92 K75 RT project .
« Reply #9 on: July 22, 2023, 09:14:34 PM »
Quote from: matjas on July 22, 2023, 05:24:31 PM
Parking cars in the garage in the winter introduces plenty of unwanted moisture into the enclosed environment and this can and WILL cause everything to rust - you don’t want your garden scissors rusty, do you?

Was the route I went. 8 bikes in two garages, two cars in one garden. For me that is the way to go ;)

Why my garage has a dehumidifier.
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Once I had a Collie pup. Dug a hole and covered him up. Now I sit there by the hour. Waiting for a Collie-flower.
New to K bikes? Click here.
K Bike Maintenance & Mods: Click here.
Buy parts here.

Offline beemuker

  • ^ Quintessential Motobricker
  • Posts: 1110
Re: 92 K75 RT project .
« Reply #10 on: July 22, 2023, 09:42:33 PM »
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  • Panama City, FL
  • '00 R1100RT,’92 K75 RT,past tense:'83 R80ST, '93 K1100LT,,94 R1100RS K75s, Honda NC700, Suzuki Bandit 1200, bmw R75/5 Honda 750

Offline Laitch

  • Faster than a speeding pullet
  • Administrator
  • ^ Quintessential Motobricker
  • Posts: 10217
Re: 92 K75 RT project .
« Reply #11 on: July 23, 2023, 12:28:44 AM »
Quote from: beemuker on July 22, 2023, 09:42:33 PM
Is this the Chinese one that can be modified to fit?
That listing dedicates the cylinder to Yamahas. For practical purposes, cylinders with hanger holes that have leeway for positioning are more desirable, as comparatively illustrated below. Also, there's a monumental thread dedicated to supporting commerce and installation of brake cylinders from the PRC. It's this one, where Young Engineer, Gryphon Almighty and Martin, among others, discuss the joys and pitfalls of desire.
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  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles
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Offline beemuker

  • ^ Quintessential Motobricker
  • Posts: 1110
Re: 92 K75 RT project .
« Reply #12 on: July 23, 2023, 08:47:11 AM »
thanks Latch. Ordered one on Amazon, a little pricier than getting it straight from China, $13, but getting it in 2 days.
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  • Panama City, FL
  • '00 R1100RT,’92 K75 RT,past tense:'83 R80ST, '93 K1100LT,,94 R1100RS K75s, Honda NC700, Suzuki Bandit 1200, bmw R75/5 Honda 750

Offline beemuker

  • ^ Quintessential Motobricker
  • Posts: 1110
Re: 92 K75 RT project .
« Reply #13 on: July 31, 2023, 07:08:28 PM »
Was able to get brake fluid resistant hose at a local shop. Got it bolted up. . Still waiting on fuel sender. Where does the other end of the spring go. I see the one on the pedal.

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  • Panama City, FL
  • '00 R1100RT,’92 K75 RT,past tense:'83 R80ST, '93 K1100LT,,94 R1100RS K75s, Honda NC700, Suzuki Bandit 1200, bmw R75/5 Honda 750

Offline Martin

  • ^ Quintessential Motobricker
  • Posts: 4440
Re: 92 K75 RT project .
« Reply #14 on: July 31, 2023, 07:33:42 PM »
It goes onto the pin that the two stand springs hook onto.
Regards Martin.
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  • North Lakes Queensland Australia
  • 1992 K75s Hybrid, Lefaux, Vespa V twin.
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Offline beemuker

  • ^ Quintessential Motobricker
  • Posts: 1110
Re: 92 K75 RT project .
« Reply #15 on: August 01, 2023, 01:54:25 PM »
Quote from: Martin on July 31, 2023, 07:33:42 PM
It goes onto the pin that the two stand springs hook onto.
Regards Martin.
thanks. Got it bled and now I have a back brake. The fuel sending unit from China is supposed to arrive today so maybe I’ll have it running by the end of the week if the order from EME comes in.
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  • Panama City, FL
  • '00 R1100RT,’92 K75 RT,past tense:'83 R80ST, '93 K1100LT,,94 R1100RS K75s, Honda NC700, Suzuki Bandit 1200, bmw R75/5 Honda 750

Offline beemuker

  • ^ Quintessential Motobricker
  • Posts: 1110
Re: 92 K75 RT project .
« Reply #16 on: August 02, 2023, 02:43:58 PM »
Getting closer. Got my expensive wires soldered up to the cheap modified sender. I don’t remember which side of the pump is positive., the big or little? And at the connector, which 2 of the 4 wires do I need. Looking at the Clymer book it appears brn is  - and yellow is +. . , but whenI switch the bike on, I get no love out of the yellow, ( or green or wh) ? Sidestand up, neutral light green, I thought the pump was supposed to energize. I haven’t put the pump in. The tank yet, trying to get the wiring figured first. Am I missing something?
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  • Panama City, FL
  • '00 R1100RT,’92 K75 RT,past tense:'83 R80ST, '93 K1100LT,,94 R1100RS K75s, Honda NC700, Suzuki Bandit 1200, bmw R75/5 Honda 750

Offline frankenduck

  • Adrninistrator
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  • Posts: 5028
Re: 92 K75 RT project .
« Reply #17 on: August 02, 2023, 02:50:52 PM »
Smaller diameter fuel pump terminal is positive.

Fuel pump only runs when engine in turning - as in starting or running.
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Once I had a Collie pup. Dug a hole and covered him up. Now I sit there by the hour. Waiting for a Collie-flower.
New to K bikes? Click here.
K Bike Maintenance & Mods: Click here.
Buy parts here.
Agree Agree x 1 View List

Offline beemuker

  • ^ Quintessential Motobricker
  • Posts: 1110
Re: 92 K75 RT project .
« Reply #18 on: August 02, 2023, 02:57:42 PM »
Quote from: frankenduck on August 02, 2023, 02:50:52 PM
Smaller diameter fuel pump terminal is positive.

Fuel pump only runs when engine in turning - as in starting or running.
Thanks,
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  • Panama City, FL
  • '00 R1100RT,’92 K75 RT,past tense:'83 R80ST, '93 K1100LT,,94 R1100RS K75s, Honda NC700, Suzuki Bandit 1200, bmw R75/5 Honda 750

Offline beemuker

  • ^ Quintessential Motobricker
  • Posts: 1110
Re: 92 K75 RT project .
« Reply #19 on: August 02, 2023, 05:23:25 PM »
the green is positive, . Got everything in the tank installed. When cranked I can hear the pump. Just got to gas it up tm and hope the fuel sender doesn’t leak.
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  • Panama City, FL
  • '00 R1100RT,’92 K75 RT,past tense:'83 R80ST, '93 K1100LT,,94 R1100RS K75s, Honda NC700, Suzuki Bandit 1200, bmw R75/5 Honda 750

Offline The Mighty Gryphon

  • Administrator
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  • Posts: 6658
Re: 92 K75 RT project .
« Reply #20 on: August 02, 2023, 05:51:23 PM »
"Fahr in the hole!"   icon_cheers
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  • 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 beemuker

  • ^ Quintessential Motobricker
  • Posts: 1110
Re: 92 K75 RT project .
« Reply #21 on: August 03, 2023, 11:28:29 AM »
Quote from: The Mighty Gryphon on August 02, 2023, 05:51:23 PM
"Fahr in the hole!"   icon_cheers
Not quite. Tried to start until the battery wore down but no fire. Pull the hose off where it comes out of the fuel filter and plenty of gas coming out. I don’t think I’ve got the fuel line switched. I’m not getting any fuel out of the return line.
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  • Panama City, FL
  • '00 R1100RT,’92 K75 RT,past tense:'83 R80ST, '93 K1100LT,,94 R1100RS K75s, Honda NC700, Suzuki Bandit 1200, bmw R75/5 Honda 750

Offline Laitch

  • Faster than a speeding pullet
  • Administrator
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  • Posts: 10217
Re: 92 K75 RT project .
« Reply #22 on: August 03, 2023, 01:44:04 PM »
Quote from: beemuker on August 03, 2023, 11:28:29 AM
I’m not getting any fuel out of the return line.
The classic clearance technique is by oral suction. Give it a whirl.  :laughing4-giggles:
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  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline The Mighty Gryphon

  • Administrator
  • ^ Quintessential Motobricker
  • Posts: 6658
Re: 92 K75 RT project .
« Reply #23 on: August 03, 2023, 02:30:19 PM »
Quote from: beemuker on August 03, 2023, 11:28:29 AM
I’m not getting any fuel out of the return line.

Is that in the tank or at the rail? 
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  • 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 beemuker

  • ^ Quintessential Motobricker
  • Posts: 1110
Re: 92 K75 RT project .
« Reply #24 on: August 03, 2023, 03:12:22 PM »
Rail, The line into tank is clear. I couldn’t get the line off where it enters the rail yet without further fairing removal. So I have fuel coming out of fuel filter, but not making it to the rail, fuel pressure regulator ca-put? Any other suspects? I guess I need to take the tank off again and investigate. What should I look for?
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  • Panama City, FL
  • '00 R1100RT,’92 K75 RT,past tense:'83 R80ST, '93 K1100LT,,94 R1100RS K75s, Honda NC700, Suzuki Bandit 1200, bmw R75/5 Honda 750
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