chevnut55

Just orderd my fuel tank/pump from tanks and now it time for fuel hoses/fitting/regulator.
I like the idea of using the ls1 c5 filter/reg/return because its simple and gm used it on vettes so it must be good.
But when I add up the adaptors/fittings/an hose it get as expencive as putting a pretty regulator on the firewall and hooking up some an fittings and adaptor to the motor and a return line.
The pump comes with 1/4 npt fittings that I need to adapt to 6an
I can either spend the cash and buy alot of braded hose or buy the 3/8 hard line adaptor fittings and use the 3/8 line thats already there and be done with it.
has anyone used the comprssion fittings? they do not say if they are for steel line or aluminum..also no mention of psi ratings.
Also why does everone use an hose to the return line ? its not high pressure.
Am I just making myself confused???

kirk69nova

iTrader: (9)

Subscribing to this thread..I need some expert opinions on this too.

garys 68

iTrader: (1)

I used a combination of vette regulator/filter, hardline, stainless braided, and AN fittings on both mine.
You dont need the regulator up front, both mine are in the back. No need for a high pressure hose on the return either. I just used a 5/16 quick disconnect barb fitting and rubber hose to the return on the tank.
If I ever do another, I'm just buying OEM plastic line and fittings. About 1/3 the cost of anything else and ethanol doesn't hurt it.
See this thread:
https://ls1tech.com/forums/conversio...e-options.html

alocker

iTrader: (10)

A trick custom fuel system looks cool but is expensive and you are creating more points to fail. The Corvette reg works really well.

71403

Nylon line and fittings, no muss no fuss.

fox12303

iTrader: (7)

Who makes the nylon line/fittings? Online sites?

I used the black braided hose and AN fittings for the supply. Reused the 5/16" original line with -6AN adapter on the end from the regulator. Out back at the sender used EFI rubber hose and proper band clamps. With the regulator/fittings the cost was around $300 for everything. Filter was extra $100 for a replacement element type.

chevnut55

Good info,this is helping.
The c5 filter is only $40.00
the 4 fitting adaptors are $17.00
I figure a 1/4 barbed fitting and rubber hose for the return.
I could re use the stock fuel line ,but thats a good point about rust..I have the 5c fuel line still and it will bent into shap but it will need to be cut at one end at the motor so I hope a 6an to 3/8 tube adaptor will hold up to the pressure.
from therel I will just use 6an hose and the adaptors to the motor.
Im thinking order 6' 6an hose. I might go with the black fittings and hose so its not so in your face...if its dark its hidden.
It should cost under $100.00 total and be easy.

fox12303

iTrader: (7)

Info in the attached link may be helpful.

https://ls1tech.com/forums/conversio...l#post16720432

stangtrader

iTrader: (2)

Dorman part number 800-300.I decided im gonna do this with some hardlines

ls1nova71

iTrader: (4)

I used steel hard line with nylon for the flex points. The compression fittings I used compressed a piece of stainless steel hard line, I wanted to see for myself how well they would work, so I cut the ferrule off to look at it. The down side to the nylon is you can only make gradual bends with it. The factory bends them to fit contours of the car, but I haven't been able to figure out a way to do it.

stangtrader

iTrader: (2)

What about boiling water to temporarily soften it up to make the bend?

ls1nova71

iTrader: (4)

It works to an extent
That's how I got the gradual bends in it. But complex tight bends like factory just didn't work.

stangtrader

iTrader: (2)

Ah thats good to know, I assume but dont know but id believe the manufacturers use a heated dye set up to make the tighter bends.looks like ill have to do some research

99VetteFRC

You can use hard line like you would buy in the local parts store. My speed shop sells AN tubing nuts. Slide the nut then the sleeve over the tube then put a single flare on the end then bolt it down right to the AN fitting. I used them on my turbo oil feed lines. Work perfect.

http://www.ebay.com/itm/AN-3-AN3-3-8...item23208a25bd

These work great for cheap!

garys 68

iTrader: (1)

Just a note on flairing hardline, you can use a single flair on seamless tubing. You need a double flair on non seamless.
AN/JIC is a 37 degree flair, brake fittings are typically SAE 45 degree flair. You need the correct tool for the flair.
If you're going to be making both and quick connect fuel fittings, just get one of these:
http://www.mastercool.com/pages/flaring_tools.html

10droped

iTrader: (1)

This might be another option to I bought and used it on mine, it's a dorman repair kit it has all kinds of differs t fittings and comes with good amount of 5/16 and 3/8 nylon line, I used it with conjunction of steel fuel line work good for me. The kit was bout $200 from autozone

99VetteFRC

We use this at the dealership for stock fuel line repairs. It does work amazing!

garys 68

iTrader: (1)

Still kicking myself for not going that route. I could have done both my swaps for half of what 1 cost me.

-TheBandit-

iTrader: (1)

How are you going from steel to nylon? Did the Dorman kit include what you needed for that ?

10droped

iTrader: (1)

Yes there is a compression fitting that conects the 2