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How to Braided fuel lines

BillBoost37

New member
There are some different fittings etc when talking about braided fuel lines. This post is a basic how to and was done on a Bonneville. The steps are basdically the same though.

Got most of the parts from Summit. they seemed to have the best prices.
To go from hard metal lines to fuel rails.

(Call your local Swagelok dealer for these two parts)
Swagelok for the 5/16" tube adapter to -6AN is part # SS-500-6-6AN
Swagelok for the 3/8" tube adapter to -6AN is part # SS-600-6-6AN

Russel RUS-640850 Fuel rail fitting
Russel RUS-640860 Fuel rail fitting
EAR-981506ERL Fitting, Coupler, Straight, Male -6 AN to Male -6 AN, Aluminum, Blue, Each 2 $5.90
SUM-220687 Fitting, Hose End, 90 Degree, -6 AN Hose to Female -6 AN, Aluminum, Red/Blue Anodized, Each 2 $25.90
SUM-220690 Fitting, Hose End, Straight, -6 AN Hose to Female -6 AN, Aluminum, Red/Blue Anodized, Each 2 $9.76
SUM-230610 Hose, Braided Stainless Steel, -6 AN, 10 ft. Length, Each 1 $36.95
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Keep in mind that this is on a Bonneville and the Swageloks were not used in the below pictures.
If you want to run the lines all the way back to the filter and nylon return these are the fittings you need:
Fuel Filter and Return Line Fittings:
Fuel Filter (16mm x 1.5) to -6 AN
-6 AN to 5/16 in. Female Spring Lock[/
I should have looked under my hood a little more and then I would have ordered one fitting differently. A straight piece instead of a bend for the supply line. Then the regulator would clear the line to the rail for supply. Either way.. it's fairly easy to do and looks amazing.
From this
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To this
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A couple hose connections
IMG_3042.jpg

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Cut a line or two
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In the 96-99 B'ville the lines run back to the firewall, to the passenger side behind the strut (no f'n room there) and that is where they convert to metal lines. Unclipping a line holder at the back and lower area of the engine bay I was able to get enough movement to gently pull the lines out from behind the strut one at a time. This gave me enough room to cut the old plastic off, attached the tube to AN fittings and hook them to the braided line which I ran along the firewall before connecting to the new fittings. Pushed the line back in and pulled the excess SS line back toward the rails. Made the rail connections and hoped for the best when I pressurized it the first time.
No leaks and pressure is right where it was before. Only difference is no nylon lines to possibly kink.

On a W body, it's relatively easy to get at the lines near the master cylinder. On go the swagelocks, a couple female hose ends with the hose already attached, then run the hose to the fuel rail. At this point Connect another end on and put the Russell/Earl fuel rail clip piece on and you are all set.
 
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good information bill! it is definetly on my to do list. i was thinking about going all the way to tank (pick up). my intent was 8AN feed and 6AN return. can those swagelock fittings work to adapt the newly braided steel line to the existing in-tank pick up. should i install a in-line pump along with the oem in-tank or upgrade the in-tank and no in-line pump?
 
Len..I'm unsure on how to upgrade your in tank pump further from say a high flow 255lph. Which the way you are going..you might need down the road.

Meanwhile, I'd look at the type of connectors on the pump top at the tank and buy the ones for there, then run the hose the length of the car and up to the rail. You wouldn't need swageloks to my knowledge, which may reduce cost, because the swages are about $25 each piece.
 
Ok so i figured i would open this up again and ask if this part list will be good? Im on a budget but dont want to cut too many corners. its not the exact part list as stated in this thread but it looks like it will work. am i missing anything? do i need the thread sealent? or their wrench to install these lines?
 

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Everything on your list is installed on my car right now and it works perfect. People will freak over the hardline adapters, I was worried about them as well with such an advertised low rating, but I called Earl's and they assured me the fittings would hold to 200psi with no issues. The fun part is getting to the fuel lines.

Edit: no sealer or special wrenches needed.

Sent from my Nexus S 4G using Tapatalk 2
 
Take the brake booster off to get at the lines to install the hard line adapters.

I would personally use a PTFE line not rubber but that is just for safety.
 
The pressure gauge you have attached to the rails is what intrigues me is it included in the parts listed or was this a custom fab aftermarket kit type thing
 
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