Nacho_Libre

It is my understanding we need a return line in order to convert our cars to TPI. Can I adapt the line from the charcoal cannister as a return line? It already goes through the frame and back to the vicinity of the fuel tank...

Gracias,

Nacho

Fevre

Needs to be 5/16", believe the stock return for both the gas and charcoal are 1/4, I am going to run 3/8" braided line to plump the high pressure to the tpi then use the stock fuel line as the return since it will be under less pressure so you can use high pressure rubber fuel line and high pressure clamps

zwede

I found 3/8" brake lines at a parts store catering to big rigs. It comes in 5' lenghts and they also had junction blocks to I could bolt sections together. This made install real easy as I only had to put in a 5' section at a time and bolt it together once it was on the car. I used 3 lengths and cut each end off and flared to go to 3/8" high pressure hose.

The 3/8" brake line is great as it is easy to bend without kinking and has corrosion protection. I ran it on the drivers side and clamped it to the brake line running along the frame.

carriljc

after spending a week trying to run/bend/fit 3/8" brake line ....only to have it leak all over the place...that's week I'll never get back.

Of course, I didn't even think of going to a big rig place and buying 5' chunks....that woulda been the hot ticket.

The braided steel run was really quick and painless. I also used the former fuel supply as the return path.

stickboy

I ran -6 braided line for the fuel feed, and then used the stock 3/8" feed line for the return. I put a new pickup in the tank too. There have been lots of threads on this subject before.