1985 K100RS. Metal quick fuel hose disconnects.

[mcmlcccvrs]

Looking for opinions on fuel line metal quick disconnects for my bike. I've never had quick disconnects on any bike so don't know what long-term durability is like. I am looking at a metal set from Euro Motoelectrics. Thank you.

 

[6322]

I’ve used these for the last 40,000 miles on my hack, ‘85 K100RS/eml, with no issues. No leaks and they function well. I did add a ninety degree bend to one of the fuel lines to give some clearance with a radiator hose. Good luck.

 

[98lee]

From everything I’ve heard, the metal ones are great. The original factory plastic ones are a fuel leak waiting to happen. Fuel under pressure on the outside of a hot engine is not a good thing!

 

[cajunrider]

I have the metal version of these on my oil-head. The only part that might fail due to age is an o-ring that easily replaceable.

Quick Disconnect Couplers

 

[lee]

When I replaced ours on the K1200RS and K1300S I purchased the metal ones from Beemer Boneyard. They give MOA members a 10% discount.
I don't know which ones you need for the K100.
https://www.beemerboneyard.com/fuliqudise.html
They sell the same CPC brand as Euro Motoelectrics.
CPC is what BMW uses.

Email them and ask about shipping to Canada. customerservice@beemerboneyard.com
Normally they're fast to reply.

 

[mcmlcccvrs]

I’ve used these for the last 40,000 miles on my hack, ‘85 K100RS/eml, with no issues. No leaks and they function well. I did add a ninety degree bend to one of the fuel lines to give some clearance with a radiator hose. Good luck.

Did you add the 90 degree coupling to the fuel return line? I was wondering about that one. The supply line to the fuel rail is pretty much straight down so no worries there. I need to take another look at my bike to see whether I'll need a 90 degree elbow on that return line right underneath the tank. It might make things a little easier.

By the way, thanks for the Aeroflow screen. It sure made highway riding much more pleasurable this past summer. Far more effective than my LaminarLip.

Cheers,
Tom

 

[mcmlcccvrs]

When I replaced ours on the K1200RS and K1300S I purchased the metal ones from Beemer Boneyard. They give MOA members a 10% discount.
I don't know which ones you need for the K100.
https://www.beemerboneyard.com/fuliqudise.html
They sell the same CPC brand as Euro Motoelectrics.
CPC is what BMW uses.

Email them and ask about shipping to Canada. customerservice@beemerboneyard.com
Normally they're fast to reply.

Thanks, Lee. And to update, they do extend the 10% discount to Canadian members.

Tom

 

[mcmlcccvrs]

I have the metal version of these on my oil-head. The only part that might fail due to age is an o-ring that easily replaceable.

Quick Disconnect Couplers

They do come with a spare set of o-rings from Euro Motoelectrics. They do sell o-rings separately, so I might get another set just in case. I'd rather have something I don't need than to need something I don't have!

 

[mcmlcccvrs]

This is what I ended up with. The return line required a 90 degree connector and re-routing. It is tie-wrapped to #2 throttle body so that it doesn't foul the throttle linkage, which it will if you don't somehow secure it.

My only concern after I first installed these was the supply line coupler leaking. The only thing I could figure out was that the length of the fuel line is critical so that the coupler securely connects. I believe I increased the lower section, which attaches to the fuel rail, by about 2mm. It hasn't leaked since but has left me with an uneasy feeling. Clearly, a fuel leak with a hot engine could lead to disaster, especially if I am riding.

I also installed a rubber grommet in the hole in the lower section of the fuel tank and will tie-wrap the return line to it, just so it stays put.

 

[6322]

Consider wrapping your fuel lies where they come close to your radiator and hoses. This may avoid a future problem with vapor lock.