Originally Posted by Bad340fish


Originally Posted by TJP
Originally Posted by Azzkikrcuda
I prefer steel hardlines to rubber for the long runs under the car.

bow up

I will also mention that one big advantage of utilizing a return line is the fuel not being used recirculates back to the tank
(constantly moving) thereby keeping the fuel cooler and less prone to vapor locking which really shouldn't happen at 40-60 PSI
twocents


That sounds good in theory but in reality it eventually heats up all the fuel. Probably not as bad with a sniper as with two fuel rails but it still will take some heat back to the tank. My car with port EFI will heat the fuel up to 120 degrees pretty easy, I even have a cooler with a fan on the return line. I may eventually move my regulator back by the tank to prevent this but for now it is what it is. I have seen fuel temps as high as 140* in heavy traffic(I have a flex fuel sensor that also reads fuel temp).


my fondness for hardlines comes from years of replacing deteriorated rubber. It was enhanced even more so when customers with their hi tech braided lines we coming in on flatbeds due to the newly introduced ethanol fuels eating the tubing for lunch. If routed properly ( that's a BIG IF) it shouldn't be an issue. If there is heat nearby a small amount of insulation can be utilized. But to each their own beer

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