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.

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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

[GeorgeRud]

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The braided lines look nice, but don't really do anything better than the plain hose as it's the inside of the hose that matters most. If it's something that going to have a lot of wear or be subject to possible hazards (ie rocks thrown up from the road), then the braided lines make sense. Otherwise, it's really just for show!

[ArtechnikA]

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The braided lines look nice, but don't really do anything better than the plain hose as it's the inside of the hose that matters most.

Sorta.
SCCA will let you run braided hose through the cabin (although they'd be happier yet if it was behind a metal panel). You'll never get an unsheathed hose in the cabin through tech.

If we're talking about a line through the tunnel then yes - it really doesn't matter. In fact, since standard neoprene line won't stand up to oxygenated pump gas very well and you'll have to replace it more frequently than you'd like (i.e. it ain't "forever") you're better off with something cheap & light or "forever."

SS tube or Teflon-braided hose are sufficiently forever, IMO.

Had too many bad experiences with Neoprene / Buna-N to recommend it for fuel.

(I once used a section of "vintage" braided hose in a CIS application and it sprayed pressurised fuel everywhere right through the steel. I switched off and tossed that bit of line right in the trash. For me now it's Teflon or SS.)