Pontiac Grand Prix Forums : Grandprix

Iron Indian · #1 06-05-2008, 01:23 AM

This writeup on Custom AN Fuel Line Modification has been added to the How To section and can be found HERE.

02BlueGT · #2 06-05-2008, 01:33 AM

Nice, I am starting at the filter and going all the way to the rails, but I can't wait to see pics

VinnieGTP · #3 06-05-2008, 02:03 AM

You're welcome for the help. It really is a piece of cake if you use those fittings.

02BlueGT · #4 06-05-2008, 02:47 AM

Yeah, I just got the first few in the mail, and ordered the last set.....

Filter up on feed side and As far back as I have line for on the return(i bought 20 feet

)

Now I just need a camera so I can do a write up

Iron Indian · #5 09-14-2008, 08:00 PM

Finally! Got some pics of my AN-6 Fuel lines. Here they are....

Hope these explain it a little better!

Sabrewings · #6 09-14-2008, 09:52 PM

So, why can't you use the spot where the flexible tubes meet the hard lines? Why cut all the way down there?

Street Wolf · #7 09-14-2008, 10:01 PM

Originally Posted by Sabrewings

So, why can't you use the spot where the flexible tubes meet the hard lines? Why cut all the way down there?

Because the lines are slightly smaller between the bottom of the car and there. Makes everything flow better.

Looks slick by the way.

Sabrewings · #8 09-14-2008, 10:11 PM

I guess I have a problem taking a dremel wheel to a gas filled line.

How do those fittings hold on to the smooth hard line?

VinnieGTP · #9 09-14-2008, 10:22 PM

Compression fittings

Sabrewings · #10 09-14-2008, 10:44 PM

Do you have to do anything else to the line besides cut it? No flaring? And... about the cutting... I take it that it is much more safe to drain the fuel from the lines first?

02BlueGT · #11 09-14-2008, 10:48 PM

No Dremel, pipe cutter

Iron Indian · #12 09-14-2008, 10:54 PM

No flaring the lines at all. I listed the PNs and pictures on the link above, heres the link, http://grandprixforums.net/fuel_line.php. Once you see them, you'll figure it out. Just make a nice, straight, clean cut and your good. As for draining the lines, I didn't. I just had a bucket handy for the excess fuel, thats it. Suck out the lines once you cut them, thats it really...

02BlueGT · #13 09-15-2008, 12:49 AM

Just to show anyone can do it, here are the pics from mine

((i just loaded em onto my PC today, but did the lines in early july)

An connection at the Filter

It goes with the other lines (return and evap)

Almost looks like it should be there

Last bracket before Firewall

Hardline connector for the return, my 2.5 dp and gmpp sway in the background..and feed running along return

Hardline adapter to 90* to stainless, was enough room for feed to make this turn without a fitting

Comes up next to the steering rack and goes to the Drivers side of the brake booster

If you can find it in this pic, you will see it curving around the brake booster

Can you even find em in this pic?

And they reapear from the top of the brake booster and under the Strut bar

And they arrive at the Rail:bigthumb:

VinnieGTP · #14 09-15-2008, 10:19 AM

I've done 2 cars that way so far...not a single leak.

SyntheticShield · #15 09-15-2008, 11:12 AM

As slowly as other things are moving on my car, maybe I can get this knocked out. What size line do I need? I know feed and return lines are different sizes, do I need to match that with the lines or can you use something like 3/8 - 5/16" SS lines and connectors?

Iron Indian · #16 09-15-2008, 10:06 PM

Use AN-6 for both sides, thats what everyone does. I used AN-6 (3/8") on both sides. To make this work I used Earl's -6 AN Male to 3/8 in. Tube for one side, and the other I used Earl's -6 AN Male to 5/16 in. Tube for the other. Worked great!

DON'T USE A TUBE NUT + SLEEVE, IT WILL LEAK MOST LIKELY!!!

Read my instructions for more info...

VinnieGTP · #17 09-15-2008, 10:40 PM

^^^^^ Yup, do exactly that. But use teflon hose if you think you'll EVER go E85. THere are special hose ends needed for that hose but I can walk you through that if needed.

02BlueGT · #18 09-15-2008, 11:00 PM

or Nitrile based:

Compatible with all synthetic lubricants, fuels, oils, coolants, and alcohols (including methanol), this hose was developed to meet strict racing specifications. It's available in -4, -6, -8, -10, -12 AN and -16 AN in lengths of 3, 6, 10, 15, and 20 feet. The hose is constructed from a seamless nitrile inner tube with a stainless steel inner braid and high-tensile stainless steel outer shell to resist high pressure, temperature, and abrasion for reliability at a price you can afford. NHRA accepted.

*Not for use with brake fluid

Source of above

IIRC methanol is a little more harsh than e85

David99GTP · #19 11-26-2008, 12:24 PM

Well, after a wild goose chase to Autozone, NAPA and a pontiac Dealer here I am. Thanks for this write up!!!!!

blackz34 · #20 01-13-2009, 06:20 PM

I have a question about the Earl's hard line fitting, they seemed to be good to only 50 PSI, don't we have more than that at WOT ?

Earl's Hard-Line AN Tube Fittings - JEGS

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Pontiac Grand Prix Forums : Grandprix

Custom AN Fuel Line setup for PRJ Fuel Rails... [*]