| Nylon Fuel Line and Ethanol [message #190812] |
Tue, 20 November 2012 01:41  |
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John Heslinga
Messages: 632
Registered: February 2011
Location: Edmonton, Alberta, Canada
Karma:
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Senior Member |
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ust a reminder that I only access this forum through the forum and not through e-mail, and I access it only periodically. I am often behind discussions coming quite late into each. Please have patience if I need to respond.
As I read the many discussions on Fuel Line Issues, I am really intrigued by the many things that are covered. It's clear that anyone with rubber in the fuel system will soon have a problem ( If they have not got one already) with that rubber breaking down with the aggressive fuels that are being used to day and tomorrow. Ethanol percentages increasing as time goes by will only exacerbate the problem.
I'm sure that I will be having those same problems in the near future. (Right now most of our gas in Alberta does not have Ethanol and that is what I buy. However, I'm not that isolated, and I will need to rebuild my own at some point soon.
Many leaders in this group are rebuilding their fuel delivery systems with as much steel as possible. This would make sense, especially using the “Poly-Armor “ lines with the copper inner liner. What would also make sense to me, is to rebuild the Entire fuel delivery, Pumping, Emissions, and Filling systems to accommodate these aggressive fuels. However: A number of Flexible Joints are inevitable in most designs. There is much talk about the type of fuel line to use and I would like to provide a document that might help those that need some information. It is a PDF document of a training pamphlet used to sell the barrier hose sold.
http://www.gmcmhphotos.com/photos/discussion-photos/p46558-barricade-fuel-line-training.html
While these types of fuel line should be the answer, The problem is: That some people are still having problems when they use some of these fuel lines.
(THE QUESTION)
How come nobody is discussing Nylon?? (This may also be Nylon / Plastic Compounds)
What is most interesting however, is that I have not seen any discussion about using Nylon Fuel line and Vinton O-ring fittings for the flex lines at key connections such as the fuel tank. ( removable) The major manufactures have been using Nylon Fuel Lines, from tank to fuel rail for years and Nylon handles the aggressive fuels that are used today. (Flex Fuel vehicles even use “Nylon Types” of plastics for fuel rails, Fuel Tanks and other fuel components) Here is a a PDF Catalogue of Metal, Nylon, Quick Connect, and Nylon to Metal Connection parts.
http://www.gmcmhphotos.com/photos/discussion-photos/p46559-3dormanquickdisconnect.html
A person could quite conceivably build a fuel delivery system, using Nylon. It would be pretty well guaranteed to be non-corrosive, and capable of handling the Methanol fuels of today. It can be used for High Pressure Fuel injection and Low pressure Carburettors. (I've repaired a few vehicles that use nylon and it is quite easy to use) Quick connect fittings are used on many in line fuel filters and they can be purchased in any parts house and included in the fuel line quite easily.
I know one of the first things that will be said is that metal will not melt and I get it. However : all fuel lines should be routed in such a way that they cannot come in contact with heat (Even metal because you would Boil the gas) I imagine though: that using metal with Nylon for flex joints may be of great Value.
Any Comments?
Best Regards
John and Cathie Heslinga
1974 Canyonlands 260
455, Manny tranny and 1 ton, 3:70 LS,
Red Seal Journeyman, DTE, BEd. MEd.
Edmonton, Alberta
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