First of all I will say I am severely over thinking this problem. I am trying to set up fuel lines for my sequential twin turbo car with Radium fuel rails. I have deleted most of the solenoids and will not be using the stock ignition coils, so I have freed up a lot of space.

Here is the plan (see picture for reference): run a hard line from the lower rail to the upper rail (blue line) and run soft lines for the supply and return (red line). My dilemma is what kind of lines should I be running and what precautions do I need to take to avoid an engine fire? I am leaning towards Earls Vapor Guard hose using their fittings and flame guard. I figure using brackets screwed to the bolts that hold the rat's nest to the housings should do good enough to avoid contact and thus conductive heat from the housings. What are your thoughts, will this suffice or do I need steed braided?

Links to the products I am taking about
https://www.holley.com/products/plum...arts/750066ERL
https://www.holley.com/products/plum...s/flame_guard/

 

Personally I would stick with soft lines all around. Fuel over the engine is the LAST place you want to risk vibration potentially working a fitting loose.

Or just "because: racecar" it and safety-wire your fuel hardline.

 

I'd avoid both braid and hardline. Former for potential rub issues in that area, latter because of very tight radius required and constrained by the two straight sections needed for the sleeves and tubenuts. A couple of banjo fittings with something like startlite hose would probably be easiest....primary rail I'm sure would still be a bitch to swing AN spanners.

That FPR, I'd be removing that before attempting an installation too.

 

QUOTE=billyboy;12536363]I'd avoid both braid and hardline.... A couple of banjo fittings with something like startlite hose would probably be easiest....

^^This (in bold)^^. Here are my latest 'credentials' modifying FD fuel lines for the last quarter century...




ALL stainless hardlines (tested @ 115psig)