Fancy AN Fittings
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Thread: Fancy AN Fittings

  1. #1
    Just Some Dude in Jersey The Scifi Guy's Avatar
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    Fancy AN Fittings

    I'm thinking of connecting up my FI fuel system with AN fittings and I was looking for a more car show-worthy alternative to the common cheesy Chinese red/blue aluminum ones that seem to be everywhere. They also come in silver and various forms of black. The coating scratches easily and I thought there would be better quality ones made from stainless steel available.

    Yeah, they're available............at $200+ a fitting!

    https://www.ebay.com/itm/Earls-49912...oAAOSwrVdc~M13

    Holy Bejeesus!

    I'm sure that guy "Earl" is a nice guy, but it would cost me about $2000+ to buy the 6-10 fittings I would need for my system. I could buy all the stainless braided hoses and red/blue Chinese fittings I would need for $50!

    Can someone find'em ALOT cheaper?


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    Opel Rallier since 1977
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    eBay stirkes again. About 4x to 5x normal pricing there for fuel line size fittings. Start with this catalog, find PN's then google for the PN. Oh, edit to add: This -20 fitting is 1-1/4" ID ! That is why it is so high!

    https://www.earls.com.au/old-catalog...rlscatalog.pdf

    Earl's is now part of Holley so you might find a newer catalog. Earl's has been around a looong time. Their stuff is not cheap.

    BTW, I recommend using teflon hose, not rubber hose, for this. The rubber will rot and crack underneath the braid and you will never know it.

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    3000 Post Club Site Supporter P.J. Romano's Avatar
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    Speedway Motors have wide choice of AN fittings.
    https://www.speedwaymotors.com/shop/...4-25-286-18126

    You probably need just 6AN 90 degrees fitting. Here is the one at Speedway Motors at $20.99.
    https://www.speedwaymotors.com/Speed...-AN,82320.html
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    Opel Rallier since 1977
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    And -4 fittings (1/4" ID) will very likely be just fine for this size of engine and HP. -6 fittings (3/8" ID) are good to flow gasoline adequately to something like 400-600 HP. My Mistubishi Starion turbo rally engine at about 275 HP runs on 5/16" lines throughout; never a problem.

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    Just Some Dude in Jersey The Scifi Guy's Avatar
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    Quote Originally Posted by Manta Rallier View Post
    eBay stirkes again. About 4x to 5x normal pricing there for fuel line size fittings. Start with this catalog, find PN's then google for the PN. Oh, edit to add: This -20 fitting is 1-1/4" ID ! That is why it is so high!

    https://www.earls.com.au/old-catalog...rlscatalog.pdf

    Earl's is now part of Holley so you might find a newer catalog. Earl's has been around a looong time. Their stuff is not cheap.

    BTW, I recommend using teflon hose, not rubber hose, for this. The rubber will rot and crack underneath the braid and you will never know it.

    Summit wants $150 for what the eBay guys are selling for $50.

    I'm a little dubious about the "Braided hose". Just because it has a stainless braided sleeve on the outside doesn't mean the hose itself is any good. I'm just entertaining the thought of the braided hose and fittings deals as a quick way to get everything connected decently. I have to stop by the auto parts store and go in the back and look at their metal fuel line offerings. I figure that two 8' lengths of metal fuel line with AN fittings on the ends would take care of the front to rear span and some sort rubber/Teflon hose combos to connect the tank and widgets.

    Let's talk about the Teflon hoses and E85 compatible hosing and connectors. One assortment a particular seller was offering loudly stated that it was to be used only with Teflon or something hose and that it wasn't E85 compatible. Or something like that.....

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    Opel Key Master opelspyder's Avatar
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    Use the summit brand fittings in black, if you use the nylon braided hose, you can get them in a reusable style. The fittings are not that much, but it will add up. You need 3/8 feed line , and might as well just run 3/8 back. I am going to use aluminum tubing, and use the tube sleeve and nuts, that way I just have to flare the 37 degrees for the A/N fitting. I would run a larger feed hose to your fuel pump though, at least 1/2 -8an, but even 5/8 hose to it is common
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    Quote Originally Posted by opelspyder View Post
    You need 3/8 feed line ....... I would run a larger feed hose to your fuel pump though, at least 1/2 -8an, but even 5/8 hose to it is common
    I agree on the larger pick up line but not on the feed line needing be 3/8". That size is normal for 500-600-700 HP, but 3/8" is serious overkill for 150-200 HP. it won't hurt, but is not necessary at these power levels.

    Example: If you had a 200 HP engine and a typical fuel efficiency, and the the pressure regulator was bypassing as much 1/3 of the fuel flow back to the tank at WOT (which is plenty), then you're pulling only around 24 GPH at WOT.

    1/4" line with turns and fittings at these flow rates will drop no more than a few psi. (For straight lines lines alone, fuel velocity for 1/4" ID line will be < 2 ft/sec at these flow rates, and the pressure drop of the 1/4" ID line alone will MAYBE be 0.1 psi at that flow rate LOL.)

    The pumps used will way more than compensate for a few psi for 1/4" line and fitting drops at these particular flow rates. No problem....Use an adequate pump and save $$ on fittings. You'll still need the regulator to knock the remaining pressure down.

    If you don't believe this, then read here... the world changes for modern FI pumps; they can flow a lot of fuel at a lot of pressure and line pressure drops tend to become much less significant.
    Fuel Line Sizing — What Size Do I Need? :: IPG Parts Blog :: IPGParts.com

  10. #8
    Just Some Dude in Jersey The Scifi Guy's Avatar
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    It just seems simpler to go with 3/8". My tank has 3/8" NPT fitting outlets, most pumps and regulators come with 3/8" AN's, most metal lines are 3/8", and the most common hose is 3/8".
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  11. #9
    Opel Key Master opelspyder's Avatar
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    Manta factory fuel injection used 3/8 feed and 5/16 return if I recall. 1/4 is too small, That’s what they used for fuel feed on a 1.1 car. I would at the least run 5/16, but in the fuel injection world, and AN fittings, a -5 size is a little oddball, expensive, and some fittings not available. -6 is the way to go for that system.
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    Senior Contributor GoldGT's Avatar
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    Jegs is another source for fittings although Jegs and Summit seem to compete at about the same price level.
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  14. #12
    Just Some Dude in Jersey The Scifi Guy's Avatar
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    Thanks for finding those stainless fittings more affordably priced than I had. Yeah, they're pricey, but only double or triple the price of the scratch prone aluminum ones. Worth the extra expense. It's a car show car. That's it's purpose: To celebrate the love I have for a car I've driven for 40 years and show it to others looking as cool and wonderful as I can make it. It behooves me to buy the good stuff.

    I guess my next step is to visit the auto parts store and look through their assortment of metal fuel lines. I figure I'll need two 8 footers. Maybe 10 footers. I can't tell until I can test fit the parts. Charlie has decided to fully assemble my engine and test/break in the new engine on his test stand with all the goodies attached, to make sure there aren't any issues. This was sort of the original plan I had "demanded" for the original 2.2 engine for the wagon. Instead we'll do it to my replacement 2.4.

    Many thanks to Greg Heinz for letting me take delivery of the 2.4 intended for him. Thanks buddy, I owe you one!

    The 2.2 manifold or fuel rail or whatever doesn't readily accept AN fittings, but Charlie has another unsellable manifold that someone had tapped for AN's for me to look at.


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    Senior Contributor GoldGT's Avatar
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    I do not recommend trying to use steel fuel line that you will find at the local parts store. Do yourself a favor and use flexible aluminum hard line. I used both on my fuel system and I can tell you from experience that bending the steel stuff is not a fun task. This is some stuff I found at JEGS https://www.jegs.com/i/JEGS/555/15100/10002/-1 I looked at Summit Racing because I think that is where I got mine which is Red but I can't find it at the moment. When I got the lines all the way up to the fire wall I changed over to SS braided hose to connect to the engine.

    Edit: Found it - Russell Performance http://www.russellperformance.com/mc...adapters.shtml
    Last edited by GoldGT; 5 Days Ago at 04:02 PM.
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    Cupro/nickel

    Thinking of CUPRO/NICKEL fuel lines for my street 71 GT. Many positive reviews and feedback.

    https://www.ebay.com/itm/CNC-625-3-8...sAAOSwBvNTrAn3
    CNC-625 3/8" Copper Nickel Brake/Fuel/Trans Line Easy Bend Easy Flare 25 Ft Roll
    CUPRO/NICKEL made of 88% copper, 10% nickel and 2% iron extruded from an ingot seamless, meeting SAE standard 1677 for brake lines on surface vehicles.

    https://www.summitracing.com/parts/s...gaApbuEALw_wcB

    https://www.jalopyjournal.com/forum/...lines.1062611/
    https://thefactoryfiveforum.com/show...-line-material
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    Just Some Dude in Jersey The Scifi Guy's Avatar
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    Hmmm....I hadn't actually thought about going fancy with the main lines. I've just been thinking: "I gotta get mostly straight lines with AN fittings already on them so that I don't have to flare the ends myself".

    My present line was bought at the local auto store. It's steel and I bent it myself, but that was when the car was stripped and being built and it's in the tunnel following the oem route. My new lines will go along the floorboards next to the frame rails. It's somewhat corroded like you would expect a plain old fuel line to look.

    I'll take these ideas under consideration.

    Can anyone dig up info on ethanol and potential damage it might cause to fuel lines in general?

    A number of the kits I looked at had hoses that claimed resistance to E85. I recall mentions of Teflon and I'm not sure if those references were that normal fuel hose has Teflon and it doesn't like ethanol or that ethanol resistant hoses have Teflon to fight off the ethanol. The issue appears to affect the flexible rubber lines, I can't say I've seen anything said that ethanol has any effect on the various metal types of fuel lines.

    Research, please.

    Last edited by The Scifi Guy; 4 Days Ago at 08:20 PM.

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    Quote Originally Posted by The Scifi Guy View Post
    Hmmm....I hadn't actually thought about going fancy with the main lines. I've just been thinking: "I gotta get mostly straight lines with AN fittings already on them so that I don't have to flare the ends myself".

    My present line was bought at the local auto store. It's steel and I bent it myself, but that was when the car was stripped and being built and it's in the tunnel following the oem route. My new lines will go along the floorboards next to the frame rails. It's somewhat corroded like you would expect a plain old fuel line to look.

    I'll take these ideas under consideration.

    Can anyone dig up info on ethanol and potential damage it might cause to fuel lines in general?

    A number of the kits I looked at had hoses that claimed resistance to E85. I recall mentions of Teflon and I'm not sure if those references were that normal fuel hose has Teflon and it doesn't like ethanol or that ethanol resistant hoses have Teflon to fight off the ethanol. The issue appears to affect the flexible rubber lines, I can't say I've seen anything said that ethanol has any effect on the various metal types of fuel lines.

    Research, please.



    Has anyone heard anything a
    Gordo,

    Here's an option that may not be pretty, but it's top rated stuff.

    https://www.gates.com/us/en/fluid-po...ine-hose/c/201

    Specifics on fuel compatibility...

    https://www.gates.com/us/en/fluid-po...0/v/4219-05653

    Good luck
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  19. #17
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    Quote Originally Posted by Lindsay View Post
    <img src="https://www.opelgt.com/forums/images/smilies/thinking.gif" border="0" alt="" title="Thinking" class="inlineimg" /> Thinking of CUPRO/NICKEL fuel lines for my street 71 GT. Many positive reviews and feedback.

    https://www.ebay.com/itm/CNC-625-3-8...sAAOSwBvNTrAn3
    CNC-625 3/8" Copper Nickel Brake/Fuel/Trans Line Easy Bend Easy Flare 25 Ft Roll
    CUPRO/NICKEL made of 88% copper, 10% nickel and 2% iron extruded from an ingot seamless, meeting SAE standard 1677 for brake lines on surface vehicles.

    https://www.summitracing.com/parts/s...gaApbuEALw_wcB

    https://www.jalopyjournal.com/forum/...lines.1062611/
    https://thefactoryfiveforum.com/show...-line-material
    Yea, I started switching over to cupro for fuel and brake lines a few years ago. So much easier to work with and they don’t corrode. Plus they are pressure rated very high. Some aluminum stuff is not rated for high pressure.
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    Quote Originally Posted by The Scifi Guy View Post
    Hmmm....I hadn't actually thought about going fancy with the main lines. I've just been thinking: "I gotta get mostly straight lines with AN fittings already on them so that I don't have to flare the ends myself".

    My present line was bought at the local auto store. It's steel and I bent it myself, but that was when the car was stripped and being built and it's in the tunnel following the oem route. My new lines will go along the floorboards next to the frame rails. It's somewhat corroded like you would expect a plain old fuel line to look.

    I'll take these ideas under consideration.

    Can anyone dig up info on ethanol and potential damage it might cause to fuel lines in general?

    A number of the kits I looked at had hoses that claimed resistance to E85. I recall mentions of Teflon and I'm not sure if those references were that normal fuel hose has Teflon and it doesn't like ethanol or that ethanol resistant hoses have Teflon to fight off the ethanol. The issue appears to affect the flexible rubber lines, I can't say I've seen anything said that ethanol has any effect on the various metal types of fuel lines.

    Research, please.



    Has anyone heard anything a
    https://www.amazon.com/Gates-27340-B.../dp/B0053OSB90

    For the rubber lines Gates Barricade is only thing I will use. Super durable and Ethanol resistant

    For hard lines Im with Bob..

    Quote Originally Posted by RallyBob View Post
    Yea, I started switching over to cupro for fuel and brake lines a few years ago. So much easier to work with and they don’t corrode. Plus they are pressure rated very high. Some aluminum stuff is not rated for high pressure.
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    Quote Originally Posted by opelspyder View Post
    Manta factory fuel injection used 3/8 feed and 5/16 return if I recall. 1/4 is too small, That’s what they used for fuel feed on a 1.1 car. I would at the least run 5/16, but in the fuel injection world, and AN fittings, a -5 size is a little oddball, expensive, and some fittings not available. -6 is the way to go for that system.
    FWIW: Nope, 5/16" on both in and out on the Manta/1900 1.9L L-Jetronic system. The original FI pumps put out about 80-90 psi dead head pressure, versus 120-130 for modern FI pumps, so you have a better pressure vs flow curve to work with in a newer pump. Just run the pressure drop numbers and flows and you'll see; it is a different world with high pressure FI and pumps in the rear; 5/16" line will (and does) support 300+ HP.
    Lack of comfort with it is OK. Just wanting folks to see that it is different from the low pressure carbs pumps at the engine, which is why you needed something as large a 1/4" on just a 1.1 engine; you had to oversize the line to avoid pressure losses on the inlet side and priming problems. You are not stuck with that limitation for a modern FI pump in the back.
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  22. #20
    Just Some Dude in Jersey The Scifi Guy's Avatar
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    I think I'm going to go with the copper/nickel metal lines and make everything else myself. Only a couple feet of the 2 flexible fuel lines will be visible in the engine compartment and I can buy the Gates hose, then slide the stainless heater hose tubing I've been using as a decorative protective sleeve over the outside of the hoses in the engine compartment area. I'll probably go metal line all the way from the hose in the engine compartment straight to the tank for the return line. The fuel delivery metal line will need a number of rubber lines to connect the tank, filter, pump, regulator, and maybe a surge tank in the rear of the car. 10-15 feet of metal tubing ought to do it all. I'll get a couple of stainless AN fittings for the engine compartment hook ups and aluminum ones for the stuff in the rear. I gotta find some nice two-line clamps to secure the 2 metal lines running in parallel along the floor pans.

    I watched about 10 YouTube videos, including a good one from Earl's, about flaring tubing and various hook ups with AN's. The copper/nickel lines do seem to be very well regarded. Polishable stainless metal line appears to be the deluxe car show option, but it would be almost impossible to see on a GT and wouldn't be worth the trouble and expense.


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