AN fitting vs fuel line size? Options

[stugray]

I want to buy a fuel cell.

It says that it has:

10AN Male inlet
8AN Male rollover
8AN Male return

http://www.jegs.com/i/JEGS/555/15551/10002/-1

When I try to lookup AN fittings vs. fuel line size I find:

-3AN - 3/8" ID
-4AN - 7/16" ID
-6AN - 9/16" ID
-8AN - 3/4" ID
-10AN - 7/8" ID

So .... are they saying I need fuel lines that are 3/4" ID?????

That is ridiculous. I have a coil of braided stainless hose that is ~5/16 ID.
It seems like the logical size for fuel line, so that seems like -3AN to me.

Why would the fuel lines be so large from the fuel cell?

Seems like a lot of expensive adapters for two tiny lines through my tunnel.

(IMG:style_emoticons/default/WTF.gif)

Any help would be good.
I must be missing something ......


And I suppose the "10AN Inlet" is for the feed to the fuel pump/pressure-regulator and the "8AN return" is the dump line back from the pressure reg.?


Stu

[stugray]

For the tubing experts out there...
Can I do this:

Cut off the flared end of my 3/8" steel line.

Slide one 6AN "tube nut" ( http://www.jegs.com/i/Earls/361/581806/100...roductId=749390 ) over the end.

(IMG:http://www.914world.com/bbs2/uploads_offsite/www.jegs.com-10819-1292939161.1.jpg)

Slide one 6AN "tube sleeve" ( http://www.jegs.com/i/Earl%26%23039%3Bs/361/581906/10002/-1) over the end.

(IMG:http://www.914world.com/bbs2/uploads_offsite/www.jegs.com-10819-1292939161.2.jpg)

Flare using a single flare tool.

Thread in a 6AN to Hose barb fitting ( http://www.jegs.com/i/Aeromotive/027/15635/10002/-1 )

(IMG:http://www.914world.com/bbs2/uploads_offsite/www.jegs.com-10819-1292939162.3.jpg)

Connect to my 30R9 5/16" FI hose with a hose clamp?

I thought that would work, but I wanted to verify before I purchased.

Am I missing something?
I know that a standard AN fitting has a 37 degree flare while a SAE flare is 45 degrees. Isnt this exactly what the "tube sleeve" is for to compress the AN fitting onto the 45 deg. flare sufficiently to seal?

This will be at the high pressure end of the fuel lines, so I want it right.

Stu

[ArtechnikA]

Flare using a single flare tool.

Yes, as long as you use a 37º flare.

...
I know that a standard AN fitting has a 37 degree flare while a SAE flare is 45 degrees. Isnt this exactly what the "tube sleeve" is for to compress the AN fitting onto the 45 deg. flare sufficiently to seal?

The 'tube sleeve' is designed to do what you want - for a 37º AN flare fitting.

It is _not_ an AN->SAE adapter.

Just get the right flaring tool and you should be OK.

Be aware that the stainless with work-harden so you'll get just one chance. If there is a problem, you'll get to cut off the flared region and try again. For this reason, I would probably suggest either an abrasive cutoff wheel or hacksaw to make the cut, rather than a tubing cutter in this application.

All this information is available in app notes on the Earl's website for free...