The Rusty Brick - '92 K100RS

[MaraudeRS]

How did you get it to do that, MarauderRS, or did it just suddenly happen—like divine intervention?


As far as the pump is concerned, it can be disassembled and cleaned but cleanliness may not be its only problem. Parts may be worn beyond tolerance. If it were my bike, I'd replace it. Measure its diameter in millimeters and go shopping. Alternative pumps are listed in the Technical Library. Check the integrity of the vibration damper, too. It shouldn't be easy to deform like dough. If you get a pump with a smaller diameter, you'll need to shim it with a fuel-proof material so it fits snuggly within the damper


Other members might come forward with pumps they've used a substitutes. Try Googling K100 alternative fuel pump.

It must have been divine intervention. That or I'm an idiot. I'm gonna go with the latter for honesty's sake :P

I'm with you on replacing it. I'd rather get one that belongs on this bike than one I'll have to "make" it work. I've seen them on eBay but I'll see if anyone needs to get one out of their way first.




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[Laitch]

It must have been divine intervention. That or I'm an idiot. I'm gonna go with the latter for honesty's sake :P

Could you explain what happened if it was an error on your part? That might help others.


If it was just luck, well, when it is running you had better do a crankcase flush.

[MaraudeRS]

Could you explain what happened if it was an error on your part? That might help others.


If it was just luck, well, when it is running you had better do a crankcase flush.

Error on my part. I didn't realize that the motor was cranking when I was trying to start it. My neighbor came over and said he could hear a little exhaust coming out of the muffler when I tried to start it so then we turned our attention to fuel. I took apart the hose, we tried starting it, and nothing came out. I pulled the pump and here we are.

I do plan on replacing every fluid in the bike so crankcase flush is on the list. Thx


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[Laitch]

Error on my part. I didn't realize that the motor was cranking when I was trying to start it.

They don't make much commotion when turning over but you'll probably know when yours is moving. That might be one of the test questions on the MSF exam.

[MaraudeRS]

They don't make much commotion when turning over but you'll probably know when yours is moving. That might be one of the test questions on the MSF exam.

Good to know. Thank you


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[MaraudeRS]

Now that I have to wait for my fuel pump to arrive (ordered a High Flow from eBay) I'm going to take apart the front brakes in order to clean the rotors and replace the pads, if necessary. As I take a closer look at the brakes I notice a problem. Can anyone see it? Mind you, I haven't touched anything yet.




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[Laitch]

As I take a closer look at the brakes I notice a problem. Can anyone see it?

I can.

[MaraudeRS]

I can.

I knew you would :)
It looks like the PO had started a brake job and gave up on it. I have missing screws and a stripped screw[emoji19] I'll have to check clymer and see if they identify the screws or maybe I'll get lucky at the hardware store. Any insight?


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[Laitch]

I knew you would :)

You don't know that I actually did though. You can't know. I've noticed a tendency to jump to conclusions here.


Brembo can tell you what they are through the magic of email, or you can use a thread gauge and check for markings. You probably should take the calipers completely apart to inspect and clean the pistons and their housings. You'll need to replace the brake lines and fittings, too.

[The Dude]

I can.

:yow
Keep looking for more of them weight saving ideas....

[MaraudeRS]

Speaking of bang for the buck, seriously consider these pads.  I have over 20,000 miles on one set and around 5-7,000 miles each on two more sets.  They squeak occasionally, but otherwise have worked extremely well.  Also, being carbon/kevlar organic pads they are about as gentle on our expensive discs as you can get.  And yes, that price is for all three calipers.

http://www.ebay.com/itm/1989-1992-BMW-K100RS-16-valve-Kevlar-Carbon-Front-Rear-Brake-Pads-/161709597631?hash=item25a6a4a3bf:g:~fAAAOSwhcJWHvb6&vxp=mtr

Just ordered a set of these for the fronts. Thanks Gryph!


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[MaraudeRS]

Brembo can tell you what they are through the magic of email, or you can use a thread gauge and check for markings. You probably should take the calipers completely apart to inspect and clean the pistons and their housings. You'll need to replace the brake lines and fittings, too.

Will do. Thx!
Are there replacement brake lines and fittings that you guys have used and recommend or should I just ask google and see what she says?


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[MaraudeRS]

A quick eBay search yielded these https://www.ebay.com/itm/401229388307
Anyone tried them? I love that color blue but that's besides the point :)


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[Laitch]

A quick eBay search yielded these https://www.ebay.com/itm/401229388307
Anyone tried them? I love that color blue but that's besides the point :)

If you get OEM rubber hoses, you'll have more money left over for the dozens of other parts you'll need and you'll stop well for a couple of decades if you ever get your full operators license.


This post raises a philosophical question. Should love be expended on inanimate objects and their various hues?

[MaraudeRS]

If you get OEM rubber hoses, you'll have more money left over for the dozens of other parts you'll need and you'll stop well for a couple of decades if you ever get you full operators license.


This post raises a philosophical question. Should love be expended on inanimate objects and their various hues?

Then I will search out a set of OEM hoses. Thank you.

Unfortunately, we use the word "love" to mean so many things. I guess it depends on your interpretation.


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[Laitch]

Unfortunately, we use the word "love" to mean so many things. I guess it depends on your interpretation.

Therefore it means next to nothing. Let's return to Philos, Eros and Agapē—just as soon as this bike is roadworthy. :giggles

[MaraudeRS]

Therefore it means next to nothing. Let's return to Philos, Eros and Agapē—just as soon as this bike is roadworthy. :giggles

Amen to that brother!


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[Vespa no more]

Take the brake hoses off and get them copied at the local brake shop. Will be the cheapest and quickest option. They might even make braided lines if bling is your thing.
Those coloured lines are a wank (Australian for excessive).


Replacement parts for BMs will get expensive.


Guy

[Brad-Man]

What planet are you on, my wife thought she was wrong once but she was mistaken. A long pain free and happy marriage is based on your ability to always admit it is your fault.  :hehehe
Regards a very wise Martin.

Quite right Martin!

According to my wife the last time I was right about anything was when I told her 27 years ago that I couldn't live a/o her and asked her to marry me...

[MaraudeRS]

Take the brake hoses off and get them copied at the local brake shop. Will be the cheapest and quickest option. They might even make braided lines if bling is your thing.
Those coloured lines are a wank (Australian for excessive).


Replacement parts for BMs will get expensive.


Guy

I'll call around to see if any shops in my area do this. Thx for the suggestion


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[mystic red]

Here's one.

[MaraudeRS]

Good find. Unfortunately they're 2 hours away from me. By the time you add up the fuel I'd use to get there and back, and my time, I think I'd be better off buying the Spieglers. I was doing some research on this forum and it looks like the Spieglers are widely recommended. I think I'm going to go with them.
My google searching skills are showing their weakness as I've had very little success finding oem style rubber hoses. The only ones I've found look like they'll add up to a whole lot more than the cost of the Spieglers. Besides, I like a little bling here and there ;)


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[John Lang]

I just replaced my originals with braided stainless steel OEM knock-offs from https://www.motobins.co.uk/. Good price and delivery was £6, taking 4 days. When the wrong part arrived (my fault -- measure your existing top hose) I returned it and they sent me the correct -- no charge for mailing.

[duckytran]

Good find. Unfortunately they're 2 hours away from me. By the time you add up the fuel I'd use to get there and back, and my time, I think I'd be better off buying the Spieglers. I was doing some research on this forum and it looks like the Spieglers are widely recommended. I think I'm going to go with them.
My google searching skills are showing their weakness as I've had very little success finding oem style rubber hoses. The only ones I've found look like they'll add up to a whole lot more than the cost of the Spieglers. Besides, I like a little bling here and there ;)


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Check out Wunderlich. They have parts for all K-Bike models.


http://www.wunderlichamerica.com/

[MaraudeRS]

Check out Wunderlich. They have parts for all K-Bike models.


http://www.wunderlichamerica.com/

None there, but thanks for that resource.


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