What's the Preferred Fuel Line Crossover Method?

Kurt in S.A. · Post by **Kurt in S.A.** » Thu Oct 24, 2013 9:52 am

I think some people might use 1/4" fuel line...I think the BMW line is 7mm ID so it is close.

Kurt in S.A.

captmako · Post by **captmako** » Thu Oct 24, 2013 10:16 am

I checked several sites for various types of fuel hose. I'm going with the opaque, yellow Tygon fuel hose.
Got to "kick-it-up a notch". Thanks for all the replies gentlemen.

Kurt in S.A. · Post by **Kurt in S.A.** » Thu Oct 24, 2013 10:22 am

Snowbum mentions Tygon F-4040A as a good choice. I guess there are good and bad choices of plastic line.

Kurt in S.A.

enigmaT120 · Post by **enigmaT120** » Thu Oct 24, 2013 4:15 pm

I brought a piece of my 7 mm fuel line to work and they found a piece of copper tubing to fit it that I use for my cross over. No clamps needed, same as everywhere else on the bike.

Chuey · Post by **Chuey** » Fri Oct 25, 2013 9:31 am

enigmaT120 wrote:I brought a piece of my 7 mm fuel line to work and they found a piece of copper tubing to fit it that I use for my cross over. No clamps needed, same as everywhere else on the bike.

Did you solder the "T"s into the copper tubing or did you use the tubing to make your own wide "H" assembly?

Chuey

Duane Ausherman · Post by **Duane Ausherman** » Fri Oct 25, 2013 11:16 am

Due to cost, we tried many types of fool line.......... back in the day. The plastic lines get hard and brittle quickly, so they can't be removed and used again. Maybe today something better exists.

HINT: Measure your longest fuel line and carry a spare. You can always cut it down to fit the shorter ones that might be found to leak.

enigmaT120 · Post by **enigmaT120** » Fri Oct 25, 2013 12:51 pm

Chuey wrote:[Did you solder the "T"s into the copper tubing or did you use the tubing to make your own wide "H" assembly?

Chuey

That would be a nice solution, but no, I just used short pieces of fuel line on each side of the copper tubing. Thanks a lot, you gave me something else to think about.

chasbmw · Post by **chasbmw** » Sat Oct 26, 2013 6:11 am

Whatever fuel line you use, just ensure that it is proof against Ethanol, otherwise it will fail in a fairly short period of time.

Copper may look nice, but can all too easily fracture. The BMW method is so neat that I really can't see how to improve it!

Jean · Post by **Jean** » Sun Oct 27, 2013 4:29 pm

Chrome-plated plumbing tubing would be snazzy...

Chuey · Post by **Chuey** » Sun Oct 27, 2013 10:34 pm

I have started using tubing called Gates Barricade. It is formulated to withstand ethanol fuel.

Chuey

Boxerworks.com

What's the Preferred Fuel Line Crossover Method?

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