AN Fittings on an ECJ5

Need help figuring this out before I go and waste a bunch of money at Summit. I've got dual fuel tanks (stock '70 rear and early CJ underseat) with a marine selector valve mounted between the seats. I want to plumb in a Ford EFI pump along the driver's side frame rail. The Ford pump uses those plastic clip on fittings that are roughly 1/4" ID.

I got the Ford pump core out of the junkyard, and grabbed a bunch of Ford fuel line and fittings. The fittings, once you cut away the flexible fuel line, are actually just barbed plastic fittings underneath. Problem is, the flexible Ford fuel line will not go back on the barbs once you get them apart. I.e., when I cut the Ford line to length, I can't get the fittings to go back on to length.

So, after pricing EFI rated fuel line and brass fittings at FLAPS, Summit braided stainless line and AN fittings actually seem like a decent value. I've never used them before, and need some help figuring this out. I think the pump is roughly 1/4". I know 4AN is 1/4", but I think that is OD, not ID. How do you figure out ID? And how do you hook up to a fuel pump that has a barbed fitting?

 

I researched my AN fittings at the site below, then bought them from Summit. The PN's are the same but you may need to add ERL as a suffix to it for them to come up on Summit's site. I found Earl's easier to find what I wanted rather than sort through Summit's website.
http://www.anplumbing.com/shop/

 

You probably already know this, but -6 is 6/16" (3/8"), -8 is 8/16" (1/2") etc. All tubing and hose sizes are ID.

 

I plumbed my 3B fuel system completely with JIC/AN hose & fittings. JIC and AN are both 37 degree fittings and are interchangeable, the big difference being the JIC are usually steel a rated for hydraulic system pressue. Makes a bullet proof, leak free system. Dash 6 would probably be the minimum you would want for fuel system tube size. IMO, not much difference in the quality between Aeroquip (Eaton), Russel, Earls, and Summit house brand on the fittings but I generally stick with Aeroquip hose-seems a lot easier to get the ends on without problems with the braiding.

 

Do I need to buy that spendy tool they have listed? What do you guys use for assembly?

 

Can be done without any special tools. The trick is to get all the braid into the ferrel without it coming unbraided-and avoiding blood. To cut, I tightly wrap an approximately 1/4" wide strip of the nylon reinforced packing tape around it and usually cut (in the middle of the tape) with a very thin Dremel cutoff disk. It leaves a nice cut with little heat and no unravelling. The now 1/8" wide strip of tape is left on there until I get the ferrel well started on it. The rest is easy. I use a vise with plastic jaw covers to hold the hose loaded ferrel while threading in the fitting. Use antisieze or teflon pipe dope on the threads or they WILL gall.

 

Okay, finally getting around to finishing this project. One last question before I order parts:

I was trying to use a Ford style EFI pump mounted along the frame rail. The idea was to get set up for TBI down the road. The Ford pump has 3/8" barbed fittings on both ends that use plastic clip-on fittings. Is there any kind of braided hose to OE adapter available? I don't see any listed on Summit. Not really excited about the idea of using hose clamps at the pump after investing in the AN fittings for the rest of the setup. Anything that can be used in place of a hose clamp to adapt the Ford plastic OE fittings to the -6AN hose?

 

If you want to use stock ford EFI components with JIC/AN fittings, you'll need these adapters.

http://www.russellperformance.com/mc/proclassic/fuel.shtml

Look down about three sections for a section called "Ford EFI"

 

I considered that. I want to give this a try and see if it works. The way I see it, I have to run a bypass return line required for EFI anyway, I keep my carb regulated to 4psi at the bowl, and so I figure the rest will just run back into the tank and assist in keeping the pump cool. Am I putting the cart before the horse? They have electric carb pumps at FLAPS for cheap enough, wouldn't be that big a deal, just wanting to do this once and be done with it.

 

Not sure if I mentioned up above, but this was the Ford low pressure feed pump, not the high pressure injector pump. Anyway, after some reading, decided to ditch the Ford pump and bought an ACDelco EP12S from FLAPS. This was the factory pump on a bunch of Quadrajet cars and trucks. I mounted it on the frame rail in a location where it will get gravity feed from my tanks to ease priming. Supposedly internally regulated to 7psi, but it is pushing my needles open on the Holley and shooting fuel out of the vents like a fountain.

The Delco uses barbed fittings, so reconnected with rubber for now. If I can get it regulated down and running properly, I will revisit the AN hose. My initial appraisal is optimistic: Very compact; it easily mounted inside my '70 frame rail behind the stock master cylinder location using an included bracket. Ground wire goes to the bracket bolt, run/ign wire from the harness and you're in business. It primed by itself in a matter of seconds. Noisy while it was priming, but then gets quiet. Draws very little current. Plentiful at many FLAPS in case of roadside failure in the future.

 

For brake lines I used the stainless braided hose and definitely wouldn't use anything else. However, my plan for fuel hose (when I do the FI) is to use nylon braided. http://www.summitracing.com/parts/RUS-632093/Application/?prefilter=1 It's plenty strong and much easier to add the fittings to. For adapters look at Earl's or Russel performance websites. It's way easier to locate the one you need there, then use the part number at Summit to buy it.

 

Its actually probably around 20 PSI. TBI FI setups run at 13 PSI so the pump has to be able to maintain that even at WOT. You need a preasure regulator w/bypass and fuel return line to the tank to keep your preasure down where the carb can handle it.

Even with a TBI the throttle body has a preset preasure regulator and bypass in it to maintain the proper PSI at the injectors. I ran a holley inline pump with my TBI. The pump was rated at 20PSI at some huge fuel flow rate. With the regulator and return line I never had an issue with over fueling.

The MPFI setups in modern cars run much higher PSI then the TBI and the new direct injection systems run even higher.