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Old 11-29-2014, 09:39 AM   #1
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Fuel Line Quick Disconnect(s)

I want to install quick disconnects on my fuel lines, both the main to the carbs and the balance lines.

Any wisdom on what to get (plastic or metal?), what sizes and from whom would be greatly appreciated.
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Old 11-29-2014, 09:45 AM   #2
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A metal quick disconnect would be better than plastic, but plastic would be cheaper.

I too want to eventually get quick disconnects.

CJ Designs sells these billet ones for the tanks, but they're very expensive.

http://www.cjdesignsllc.com/products...gs-ktm-billet/
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Old 11-29-2014, 10:20 AM   #3
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I leave my fuel taps on all the time as I put a quick release in the pipe that passes under the battery box


Its a 6mm hose, check out the parts manual for hose sizes, HOSE 6X12 PER METER is 6mm bore, 12mm outside diameter.
I used a 1/4" plastic one off Ebay, same as the one fitted to the 990 fuel hose
http://www.ebay.co.uk/itm/FUEL-LINE-...item2ed369e563
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Old 11-29-2014, 10:22 AM   #4
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Peanuts: I was actually looking at that exact quick disconnect on ebay earlier. Seems to hold up okay I take it?
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Old 11-29-2014, 11:00 AM   #5
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Niiice! Peanuts, you are da man! I have learned more from your posts...
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Old 11-29-2014, 11:12 AM   #6
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Quote:
Originally Posted by Somewhere Far Beyond View Post
Peanuts: I was actually looking at that exact quick disconnect on ebay earlier. Seems to hold up okay I take it?
this appears to be the same brand that beemer riders replace. They often get brittle with age and then break. Not always, no one knows the rule, probably some gas additives in some brands kill them. I would consider the metal ones.

Rod
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Old 11-29-2014, 11:20 AM   #7
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something to consider:

I have replaced enough of the plastic ones in BMWs over the years that I decided to install the metal type in my 990 preemptively and ordered a chrome plated brass one from someplace. FWIW, Beemer Boneyard is selling the chrome plated brass ones at a pretty decent price just in case you're interested.

The plastic ones tend to snap at the groove in the male end where the retainer clip holds it inside the female end. Be very careful to install the line with no tension or torsion on the plastic QD, or it will probably fail without warning at an inconvenient time and place.
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Old 11-29-2014, 12:59 PM   #8
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Mine have been on for 3 years, fitted one in the vent line balance hose above the air filter too.

Maybe I am careful, but no problems so far.

Or maybe UK fuel is kinder on plastic than US fuel?
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Old 11-29-2014, 01:25 PM   #9
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jiffy-tite from usa also have a billit style quick disconnect,very well made/and positive etc on connection.21504 part number for female/22504 part number for male assembly

johnno950 screwed with this post 11-29-2014 at 01:52 PM
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Old 11-29-2014, 01:52 PM   #10
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Those are slick!
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Old 11-29-2014, 03:38 PM   #11
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I replaced the stock 990 quick disconnect with one of those earlier this year. Much stronger and easier to disconnect, and even comes with an extra O-ring and hose clamps.

http://www.beemerboneyard.com/cpcqkdiscon1.html

Quote:
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FWIW, Beemer Boneyard is selling the chrome plated brass ones at a pretty decent price just in case you're interested
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Old 11-29-2014, 04:37 PM   #12
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Hmm, some solid products seem to be getting suggested. Perhaps I'll snag a couple quick disconnects to replace the fittings I used for my vacuum fuel pump install.
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Old 11-29-2014, 10:37 PM   #13
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CPC is the company that makes the ones on BMW's. As previously mentioned the plastic tends to break. Usually it's the male barb that snaps off, jamming the QD open and pissing gas everywhere.

I was looking at the Powercell units on KTMTwins (http://www.ktmtwins.com/cj-designs-k...t-fuel-fitting), but damn those are very dear!!!

Just today I cut a new length of hose to replace that miserable little bastard that runs under the battery. I added a couple more inches and it makes the job more tolerable. Although I would love a pair of those Powercell QD's and I've been very good this year.

I haven't checked the CPC catalog yet to see if they have something similar to the Powercell units. But winter has just begun, so I'm sure they'll be time.
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Old 11-30-2014, 02:11 AM   #14
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For what it's worth, I wouldn't touch the all plastic variety. Spend the extra on all metal parts. To be exact, i wouldn't fit the male part in plastic. I had one fail this summer. It was like a booby trap, I barely touched it. Fuel everywhere. Lucky for me I wasn't on the roadside but at a friend's Garage instead.

Most notable was buying the replacement, BMW only offer the metal male parts now (that was in Germany). That has to be for a reason (i asked specifically for the metal version only to be told that's what I'd be getting, like it or not!).

I would NOT want one of these to fail with a hot engine below it!



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Old 11-30-2014, 04:44 AM   #15
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Quote:
Originally Posted by NoFive View Post
I replaced the stock 990 quick disconnect with one of those earlier this year. Much stronger and easier to disconnect, and even comes with an extra O-ring and hose clamps.

http://www.beemerboneyard.com/cpcqkdiscon1.html
The fuel feed between tank and throttle body is high pressure, the beemerboneyard supplied clamps were fine with that application?

You guys have got me worried now! Our fuel is getting increasing amounts of ethanol so I guess we will start having problems similar to you soon....
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