We took off the upper intake manifold and removed the rats nest. The fuel line ran through one of the headlines on the rats nest though. So we picked up two 2 feet sections of 5/16 fuel line. Problem is it crosses the top of the engine and rests on it. Will the heat of the engine melt through the rubber line? Is it a bad idea to leave it like this?

 

You dont want any fuel line to rub against anything. If you are unsure, you should fix it, just in case. You dont want a fuel leak leading to a fire.

 

The actual keg will never really get above the boiling temp of water (unless something catastrophic is happening) you dont specify what car you have but If you have to run fuel lines across the keg its best to sleeve them and clamp them down.

 

It's a 87 FC 13b. So you think if we put sleeves over the fuel line where it rest on the keg we will be okay?

 

Thats how ive got mine and many other people.
Dont have much choice with the fuel rails under the intake manifold.
And​​​​​​ as mentioned above make sure they are clamped down properly so they cant rub on anything.

 

If the FC is anything like the FD, just re-use the metal line. A dremel with a cutting wheel makes easy work removing the unneeded sections then simply screw it back down like factory. Clean and safe.

 

If you cut any hardline, make sure you bubble flare it. Also, SAE fuel hose does not match exactly with the JDM spec hardline. If you use SAE hose, double clamp it (using fuel clamps) and tighten really good. Otherwise, it will leak (ask me how I know).

 

To clarify, I didn't mean cutting hard fuel line. I meant using a dremel to cut the welds holding solenoid racks, unneeded vacuum ports etc.

 

Ya,on an FC the rat's nest includes the fuel lines,so if you cut the thing up you can get just the fuel lines out of it.
My last Turbo car had some Lines with A/N fittings,etc on them and You can get clamps with the "insulating rubber" to place then around the lines and secure them to the engine.