[Formulajones]

Chip, I have pictures of the current Fbody I'm restoring using the Inline 1/2" stainless prebent lines.

They aren't very good pictures, I'm not a photographer, but I'll see if I can take a better one to give you an idea if it helps??

[max 93]

What clips are you guys using when installing 1/2” prebent lines? I didn’t find anything on Inline Tube for 1/2”

[gtolarry]

Thanks for all the input. Noticed everyone runs 1/2 line for return. I am running 3/8 for feed linne. Will 3/8 return line ber suffcient. Engine is 455 with ram air iv cam and Kauffman heads. Right now 750 holly but want to switch to quadrajet.

[Tom Vaught]

If the pump is running "X" amount of fuel thru a 3/8" input line at say 42 psi, and the engine is using 2% of that flow at idle, the pressure is high but the actual flow after the engine fuel rails or Throttle Body Injection is low because the return line has basically minimal restriction back to the tank. You need the larger line IF the regulator cannot dump the excess fuel back to the tank quick enough.

An easy way to tell is install a second fuel pressure gage after the regulator and before the fuel tank. Try that method first. For years OEMs ran the 3/8" feed line and return line systems with EFI on engines without issues using the 255 liter fuel pump.

Tom V.

[HWYSTR455]

Originally Posted by Formulajones

Chip, I have pictures of the current Fbody I'm restoring using the Inline 1/2" stainless prebent lines.

They aren't very good pictures, I'm not a photographer, but I'll see if I can take a better one to give you an idea if it helps??

I'm interested in those pics, I need examples, for 2 diff 2nd gen F cars.

You flared the SS lines? Or use compression fittings?

.

[chiphead]

The challenge with my setup is I've Got The Regulators on the passenger side fender. can I run the fuel lines up the driver side and then run under the engine to The Regulators? Nitrous solenoids and the carb fuel Inlet face toward the passenger side.

[Tom Vaught]

The ideal situation if you wanted to keep the regulators on the passenger side would be to run two Chevelle fuel lines on the passenger side. one line 3/8" for the feed and a second line either 3/8" or 1/2" back to the tank. The fuel line people sell both sizes for the Chevelle. I have a Chevelle line on the return (passenger side) of my 64 GTO. I used a 66 Chevelle application. Reminder, I also have a Tanks, inc fuel tank for a 1964 GTO.

Tom V.

[vidguy]

Originally Posted by Formulajones

...On F-bodies it's relatively easy because from the factory the fuel lines are 2 sections that split at the sub frame. So install is pretty straight forward.....

It was not possible for me to get that original front piece out and the 1/2" front piece in without lifting the engine which I chose not to do.
Also, now that I think of it I probably would have had to alter the ending location since I had a regulator where the pump goes originally.
YMMV

[vidguy]

Originally Posted by max 93

What clips are you guys using when installing 1/2” prebent lines? I didn’t find anything on Inline Tube for 1/2”

You can find 1/2" stock style clips but it takes major finagling to get them to screw back into the stock holes due to the larger diameter of the line. I think in the rear I had to drill a hole or two.. I ended up using those and a generic or two.

https://www.speedwaymotors.com/Fuel-...ro,116968.html

[HWYSTR455]

Originally Posted by Formulajones

Yes both Inline and Right Stuff offer the 1/2" pre bent steel lines to run as per factory with correct bends, they offer the larger clamps to secure it, and it comes with steel coil wrap like factory.....

They have 1/2" stone guard? I searched all over for that, called a bunch of places, no one had it.

I've gotten the stone guard for all the other smaller lines, use it specifically for brake lines. It can hide choppy bends too! Heheh!

.

[vidguy]

They do. The Right Stuff put it on my line. I bought some extra Tar wrap from them in various sizes, but I didn't get any of the steel loom.

[HWYSTR455]

Originally Posted by chiphead

The challenge with my setup is I've Got The Regulators on the passenger side fender. can I run the fuel lines up the driver side and then run under the engine to The Regulators? Nitrous solenoids and the carb fuel Inlet face toward the passenger side.

Have you seen this thread?

http://www.forums.maxperformanceinc....=1%2F2+install

You can run a 'T' fitting on the output of the first regulator, into a deadhead type regulator, and go to the N2O fuel sol from that.

If you're not using the N20 fuel regulator for tuning, and you're running a carb, just run a line straight from the 'T' in the 1st regulator directly to the fuel sol.

Steel line is better than aluminum, but it's hard to manage/bend, and transitioning from hard steel line to AN is a little more difficult. (you should use a compression type fitting spec'd for steel)

I've had no issue running aluminum lines, and have 100s of 1000s of miles on aluminum lines. I guess it's kind of a personal preference which way you choose.

.

[HWYSTR455]

Originally Posted by cnc

Yep that's what I've done using the Inline Tube stainless feed and return on my 73 ...the sections that are not stainless are filled with Russel pro classic

1/2" lines? You have frame connectors? Can you post a pic of where it crosses from the inside to the outside?

.

[chiphead]

Originally Posted by HWYSTR455

Have you seen this thread?

http://www.forums.maxperformanceinc....=1%2F2+install

Steel line is better than aluminum, but it's hard to manage/bend, and transitioning from hard steel line to AN is a little more difficult. (you should use a compression type fitting spec'd for steel)

I've had no issue running aluminum lines, and have 100s of 1000s of miles on aluminum lines. I guess it's kind of a personal preference which way you choose.

.

I can find coils of 1/2" aluminum online, but no 1/2" steel line. Does nobody use the 1/2" steel line unless it's pre-formed by a company like Inline Tube or Right Stuff?

I like TV's idea of using 2 chevelle fuel lines, if they would fit decently. Can those be installed with body on frame?
I've got engine and tank out for upgrades. I was running a sumped tank, external Comp 140 and 8AN lines. All that gets in the way of tailpipes, so I want to go to a Tanks Inc internal-pump setup.

[HWYSTR455]

InLine does have steel lines, and stainless steel, in coils. Stainless 1/2" for a 25' roll is around $100.

I'm sure others carry it too, just have to shop it.

.

[vidguy]

Chiphead in your case could you....use the stock shaped line in 1/2" S/S up the driver side to the wheelwell area. That would be easy to put in place.
Have them put an AN fitting on the ends.
Then as you say run some PTFE hose/braided along the crossmemeber close to where the brake line is routed. would that work?

FYI I have some aluminum 1/2" coiled left over. let me see how much I have. If you need it I'll ship it to you.

[cnc]

Originally Posted by HWYSTR455

1/2" lines? You have frame connectors? Can you post a pic of where it crosses from the inside to the outside?

.

Yes 1/2" SS lines I had AN fittings attached when I ordered the lines one side was from In line Tube one side from Right Stuff don't ask me why I got one side from one place and one from another ...
Yes SF connectors
I run one line down the drivers side one down the pass side..
I'll see what I have for pics....

[cnc]

More pics
The last one here u can see the RobbMc regulator mounted where the old Mechanical pump was...

[HWYSTR455]

I see now, was having an issue imagining the line run(s) around where the line on the passenger side crosses over from the inside of the rail to the out side, when running frame connectors.

My thought on an a 2nd gen F-body was to run 2 lines together in the OE position on the passenger side, hence the questions.

Thank you for posting the pics, excellent reference.

EDIT: So the last pic in post #37 is before the subframe connector was installed?

.

[Joel Koontz]

IMO this would be the best material to make fuel lines out of.

https://www.amazon.com/Copper-Nickel.../dp/B01FOKISGI

It will last forever and is VERY easy to bend, compared to Steel or SS line.