Roadster fuel line advice

[willie knuckles]

I am building a MKIV Roadster with IRS and Blueprint 306 with pre-installed (from Blueprint) Holley Sniper. The sniper kit contains flexible "vapor-guard" hoses for the 2 lines. The Holley kit also has the in-line fuel pump with pre and post filters. I am debating: using the FFR hard lines under the car with a flexible line (either the supplied nylon or an aftermarket braided PTFE) for the filters/pump sections or abandoning the hard lines and using the supplied hoses (or an aftermarket braided PTFE) for the entire run. If I went flexible, is the Fragola 6000 stainless braided PTFE 6AN a good choice (or other suggestions)? I'm also interested in how some of you arranged your pre filter/pump/post filter under the car. Any suggestions/advice/pictures are appreciated!

Thank you in advance!

[Kbl7td]

Flex line throughout, minimize joints, call it a day. Don’t put any sort of regulator in the engine bay either.

[egchewy79]

I did SS braided PTFE flex lines throughout. Minimizes leak points. Keep in mind you’ll need PTFE specific hose line separator clamps as PTFE lines are smaller in OD than regular fuel lines for the same ID.

[Papa]

I'll throw my $0.02 in for you. First, I'd recommend going to an in-tank pump and pre-filter. Plumbing all that stuff outside the tank is certainly possible, but klunky and usually requires some sort of mounting plate to keep the pump near the bottom of the tank. For the lines, good quality PTFE lined hose works great and is quick and easy to install. I personally think hard lines look better running alongside the frame rail, but that's a personal choice. Fragola is good stuff, and in fact, Aeromotive uses Fragola fittings sold in Aeromotive packaging. Holley recommends 3/8" lines for both supply and return lines, so I'd not recommend using the supplied hard lines from FFR. Will they work? Many have used them...I just like to follow the recommendations from the manufacturer of the components.

Dave

[Alan_C]

Another input on using the PTFE braided flex line is that it tends to dampen sound from the pump and fuel flow. The braided line is often spec'd by the manufacturers of these systems for that reason. On my 4.6L DOHC engine, Ford had installed a pulse dampener just before the fuel rail input. Not something I see on the current Coyotes.
Anyway, lots of good choices for braided PTFE line, and it MUST be PTFE to deal with the ethanol content in modern fuels. I like the Russell product, but Aeromotive, Fragiola, and even house brand like Summit will do the job. Just make sure you buy the fittings from the same company who makes the hose for best results. The cost of the fittings are not cheap, but good ones will last the life of the car.

[willie knuckles]

Thanks for the input /advice (and keep it coming!). In regards to the intank fuel pump - what are some of your thoughts? Should I stick with the Holley pump (I know that Mike Forte sells 'em)? Rec's for the filter?

[Its Bruce]

My FP suggestion: Aeromotive Stealth Electric Fuel Pump 18638

[robmccon]

I went with PTFE hoses and fittings (AN6) and clamps from Hot Rod Fuel Hose. I’m running a Holley Sniper in-tank fuel pump (12-345), supply and return line to a corvette-style filter regulator. Then a single line all the way to the Holley Sniper.

[cv2065]

Aeromotive Stealth pump, hanger and regulator. PTFE hoses all the way with this build. Carb'd 427 at 550HP and I'll be running 8AN fuel lines from Hot Rod Hoses. Their stuff looks nice. Plenty big...:)

[edwardb]

My input, some reinforcing what's already been said. Hard lines are fine, but agree you should have 3/8" for both send and return. Also agree AN6 PTFE flex throughout is a good alternative. I've done both. Also agree buy the hose and fittings from the same mfg. I personally haven't installed an in-line pump. But everything I've heard about them is they are loud. An in-tank is quieter and are naturally cooled by being in the fuel. The all-in-one Aeromotive pump looks like a good choice. I've seen several builds use them. I've personally only used the Pro-M Racing High Flow Fuel Pump Hanger (https://www.promracing.com/high-flow-fuel-pump-hanger-for-1986-1997-mustangs.html) and a Walbro pump. Work great for me. Walbro GCA710-2 for 190 lph and GCA719-2 for 255 lph.

[Alan_C]

Many folks have had Walbro in tank pumps fail. I like Aeromotive products, they would be my go to IMO.

[edwardb]

Many folks have had Walbro in tank pumps fail. I like Aeromotive products, they would be my go to IMO.

Yeah, well, there's some scientific evidence. Here's mine, equally unscientific. I've used Walbro pumps in 4 builds over 10+ years and thousands of miles. Zero issues. That same Pro-M and Walbro setup has been used in a ton of builds. I agree there were several reported pump failures a while back. No real reason was determined. Although a lot of chatter about fuel line sizes, excess pressure, etc. No matter the brand of anything somebody is going to say there were failures. Which is typically the only thing that gets reported. Walbro pumps are made by TI Automotive, a major OE supplier of automotive pumps. I would use one again without hesitation. But I don't disagree that Aeromotive would be a good choice. Said that. I'm sure they've never failed. :rolleyes:

[Kbl7td]

They’re fakes. If you’re buying from Amazon beware. Lots of knock off wlbros on there. If you’re gong that route buy from summit or rockauto. Lots of guides out there to see the differences in counterfeits.

[Mike.Bray]

If you want PTFE AN lines and fittings Hot Rod Fuel Hose is the best bang for the buck. I've used almost all brands of AN hose & fittings and the stuff from Hot Rod is as good as any for a very fair price. Good customer service too.