Can copper be used for fuel line?

sweatybetty said
okay, im throwing in my 2cents worth. i install heating and a/c systems for a living. the newer systems use 410a freon which runds about 300-400psi when the system is running. the refer lines are soft copper. the equipment also shakes-vibrates a bit while running. ive seen very few that leak when installed properly. that being said, i am using 3/8 copper for my fuel lines on my car, but also putting 3/8 rubber fuel line over it anywhere it may rub against metal. i say go for it.

You have to ask yourself....What is the biggest benefit vs. risk ratio to having Copper Lines? Benefit of cooling/heatsink effect? If so, I imagine it would be theoretically minimal compared to the properties of aluminum. Just like the arguement for aluminum vs copper radiators. It's all in the design/setup.

I'm not a metallurgist but if it was insulated somehow that might be another story. An effective ceramic coating (great heat sinks) on the outside walls of the fuel lines could dissipate heat as well, especially if it was coated near the headers/exhaust. Same goes for brake lines that run near hearders. With all these special coatings engine builders are using these days I bet there would be a market for this kind of thing if it could be proven to be effective. That's with scientific testing and not "mickey mouse" engineering :-k