Running the fuel lines

This update covers PTFE fuel lines.

Related notes live on the Factory Five Cobra build hub.

PTFE fuel lines: Getting back on the fuel system

PTFE feed and return

First, the past few months were tough for garage time.

So I keep reminding myself, “It’s not going to build itself!”

Then I headed out to get the PTFE fuel lines set up.

If you remember, I am running PTFE 3/8″ flexible line.

Also, that line runs from the tank to the engine.

Meanwhile, a 3/8″ return line meets Coyote 5.0 EFI needs.

Measuring the passenger-side run

I had already attached one -6AN fitting to the PTFE tubing.

However, I still needed the passenger-side length.

So I grabbed some rope from Home Depot.

Also, it cost a whopping $4!

Then I burned the ends so they would not fray.

After that, I ran the rope along the path.

Meanwhile, duct tape held it along the run.

Fittings, mounts, and leak testing

Cutting and assembling AN ends

Once I had my length, I cut the fuel line.

Then I assembled the -6AN fitting.

Earl’s chassis mounts

Next, I was ready to drill and mount my Earl’s tubing connectors.

So I drilled into the chassis.

Also, I used screws longer than the originals.

I chose 7/8″ depth so they extend beyond the connector.

Then they reach into the drilled and tapped holes.

Meanwhile, I think they look pretty smart!

Ultimately, I will use some blue Loctite for the final mount.

Fragola pressure test

After that, I had to test the fuel line for leaks.

So I got the Fragola -6AN pressure test setup.

Also, it lets you cap both ends of the line.

Then you add compressor air pressure.

After that, you submerge the line in water.

As a result, you can spot connector leaks.

Sadly, I will have to cut and redo the ends!

However, I need a few more olives for the Fragola connectors.

Because they are a one-use part.

Therefore, I will wait for them and continue forward.

Thanks for reading!

Still, these PTFE fuel lines are close.