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JIC vs AN Fuel Fittings

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Old 12-26-2011, 10:07 PM
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Default JIC vs AN Fuel Fittings

Is anyone using JIC fittings instead of AN fittings on your stock fuel pressure setups? From what I have read I believe using JIC for fuel fittings at ~60 psi would be more than sufficient. What does everyone else do?

Thanks,
Chase
Old 12-26-2011, 10:09 PM
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Originally Posted by Silver2000WS-6
Is anyone using JIC fittings instead of AN fittings on your stock fuel pressure setups? From what I have read I believe using JIC for fuel fittings at ~60 psi would be more than sufficient. What does everyone else do?

Thanks,
Chase
I use AN stuff myself. Cleaner, lighter and sexier.
Old 12-26-2011, 10:20 PM
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Originally Posted by JPH
I use AN stuff myself. Cleaner, lighter and sexier.
It does look really nice, just on somewhat of a budget and looking for any chances to save without being problematic.
Old 12-26-2011, 10:43 PM
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Functionally they are the same.

Andrew
Old 12-26-2011, 10:55 PM
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You're driving a car, not flying an aircraft.

So AN isn't necessary. JIC is beyond good enough and less $$$.
Most people just use AN because they don't know about JIC or other options.

AN = Army / Navy certifications created in the 60's iirc for aircraft grade components.
I believe it changed to Air Force / Navy now though.

OEM's use the polymer lines and fittings now too, which I put on my ride.
$2 per fitting VS $20 per Russell AN fitting......do the math. Not going over 700hp.
Old 12-27-2011, 12:15 AM
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Read this to understand the difference between AN and JIC: http://weislake.com/sig/mucker/an-vs-jic.pdf
Old 12-27-2011, 12:58 AM
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link doesn't work
Old 12-27-2011, 02:29 AM
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Here.....read.

http://en.wikipedia.org/wiki/JIC_fitting

JIC fittings, defined by the SAE J514 and MIL-F-18866 standards, are a type of flare fitting machined with a 37-degree flare seating surface. JIC (Joint Industry Council) fittings are widely used in fuel delivery and fluid power applications, especially where extremely high pressure is involved. The SAE J514 standard replaces the MS16142 military specification, although some tooling is still listed under MS16142. JIC fittings are dimensionally identical to AN (Army-Navy) fittings, but are produced to less exacting tolerances and are generally less costly. 45-degree flare fittings are similar in appearance, but are not interchangeable.
Here's where people get confused.
JIC is often referred to as SAE and SAE comes in 2 flare sizes, 37 degree and 45 degree.
You can get the wrong flaring and have issues , and I think that's where some people's perception of just sticking to AN was better.

Just make sure you order 37 degree JIC / SAE fittings and you're fine.
Old 12-27-2011, 02:57 AM
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Originally Posted by Aceshigh
Here.....read.

http://en.wikipedia.org/wiki/JIC_fitting



Here's where people get confused.
JIC is often referred to as SAE and SAE comes in 2 flare sizes, 37 degree and 45 degree.
You can get the wrong flaring and have issues , and I think that's where some people's perception of just sticking to AN was better.

Just make sure you order 37 degree JIC / SAE fittings and you're fine.
When it comes to fuel i'll very happily pay a premium for exact tolerances.

I know functionally they're the same, but i'll gladly pay $30/fitting (for the crazier angles like 120*) for some quality Aeroquips.
Old 12-27-2011, 03:28 AM
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Originally Posted by Aceshigh
So AN isn't necessary. JIC is beyond good enough and less $$$.
I agree, I've seen steel braided hydraulic lines with AN fittings pressure checked to over 5000 psi (nothing on a car is going to achieve this kind of pressure, ever). I'd say JIC is more than suitable for fuel lines.
Old 12-27-2011, 10:58 AM
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Thanks, there is enough info here for me to make a decision.

Last edited by Silver2000WS-6; 12-27-2011 at 11:29 AM.
Old 12-27-2011, 03:51 PM
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Originally Posted by 93Z2871805
I agree, I've seen steel braided hydraulic lines with AN fittings pressure checked to over 5000 psi (nothing on a car is going to achieve this kind of pressure, ever). I'd say JIC is more than suitable for fuel lines.
Yes, those Parker stores carry a ton of fittings cheap and like ya said, crazy pressures and CHEAP.
Hydraulic fittings aren't bling blingy but they are hardcore superceding what anyone would need.

The ONLY fittings I wouldn't use is the 90* plus types because it's literally an elbow,
not a curve, and that hurts fuel flow in higher HP applications I've been told by Jody (Camcojb)


Bling bling under my car isn't my thing personally, I prefer functional but inside the bay obviously people want something nice looking.
That's where you put the nicer stuff. Here's another link that shows JIC is an Industrial application.

http://pipeandhose.com/node/16
Old 12-27-2011, 04:05 PM
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Originally Posted by Project GatTagO
Functionally they are the same.

Andrew
This...
Old 12-27-2011, 10:02 PM
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Originally Posted by Silver2000WS-6
Thanks, there is enough info here for me to make a decision.
If there is an industrial hydraulic business in your area I suggest you pay them a visit. They can hook you up with just about any type of hose you will need. I especially like using them for making custom power steering hoses. I also suggest that you use teflon lined hose for fuel. It is more expensive and less flexible than the reinforced rubber hose, but it will not be effected by fuel, which is not something that can be said for the rubber hose over time.

Here is a hose that I had made for my swap that uses JIC ends. It is teflon hose with a braided stainless on the outside but I covered it with a braided nylon cover:



Andrew
Old 12-27-2011, 11:21 PM
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"Teflon" is a trademarked name, the more commonly used name is PTFE lines.

Hey Andrew, hows your fuel system with that ONE hydraulic fuel fitting that is a 90* bend by the fuel tank??
I've been curious what kind of HP you're pushing and if you've experienced any issues or not with WOT.

Old 12-28-2011, 09:27 AM
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Originally Posted by Aceshigh
"Teflon" is a trademarked name, the more commonly used name is PTFE lines.

Hey Andrew, hows your fuel system with that ONE hydraulic fuel fitting that is a 90* bend by the fuel tank??
I've been curious what kind of HP you're pushing and if you've experienced any issues or not with WOT.

I've had no issues with the set-up in the picture. I have a fuel pressure gauge inside the car and the pressure is pegged at a constant 58.5psi under all driving conditions. The only issues I've experienced is a small leak that occurred at the dark colored compression fitting. I tightened it up and it stopped leaking, but I plan to revise that arrangement slightly at some point.

Incidentally, that 90* fitting was there when I had the 502 in the car with the same fuel pump and there were no issues, even though the 502 made more power than my engine does now. Also, the fittings that come out of the tank are the same 90* design.

Andrew
Old 12-28-2011, 12:42 PM
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Why are you guys spending so much to get Russell fittings? Not worth the $$$ IMO.

You can get AN Hose ends for about $4
AN Hose for about $4.50/ft
Teflon AN for about $6/ft
All with Free Shipping

I've used them with no problems on my Power Steering Lines(Teflon AN Hose/Steel/Zinc) and used AN Fittings/Hose from my 4L80E to my trans cooler. Going from regular 3/8" fuel line to all AN hoses when I add another Walbo 255 down the road.
Old 12-28-2011, 07:48 PM
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Originally Posted by SIKHS 5
Why are you guys spending so much to get Russell fittings? Not worth the $$$ IMO.

You can get AN Hose ends for about $4
AN Hose for about $4.50/ft
Teflon AN for about $6/ft
All with Free Shipping

I've used them with no problems on my Power Steering Lines(Teflon AN Hose/Steel/Zinc) and used AN Fittings/Hose from my 4L80E to my trans cooler. Going from regular 3/8" fuel line to all AN hoses when I add another Walbo 255 down the road.
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Old 12-28-2011, 08:05 PM
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Originally Posted by Project GatTagO
I've had no issues with the set-up in the picture. I have a fuel pressure gauge inside the car and the pressure is pegged at a constant 58.5psi under all driving conditions. The only issues I've experienced is a small leak that occurred at the dark colored compression fitting. I tightened it up and it stopped leaking, but I plan to revise that arrangement slightly at some point.

Incidentally, that 90* fitting was there when I had the 502 in the car with the same fuel pump and there were no issues, even though the 502 made more power than my engine does now. Also, the fittings that come out of the tank are the same 90* design.

Andrew
Thanks for the info.

I've been curious if that was a straight 90* angled connector and if it gave
you issues when I saw that build thread ages ago. Very nice car (obviously)
Old 12-28-2011, 08:25 PM
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I use JIC fittings for my fuel lines... No probs!


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