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Old 05-07-2012, 06:19 PM   #1
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Default EFI hardline fitting

Will this fit our fuel system hardline? I want to go from the fuel hardline to a -6 AN fitting on a 2000 Miata. Although there are a bazillion different style EFI quick disconnect fittings there seems to be only one style of hardline, albeit in different sizes.

http://www.summitracing.com/parts/RUS-640863/
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Old 05-07-2012, 10:42 PM   #2
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Yes. I used one. Works.
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Old 05-08-2012, 01:49 AM   #3
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Much appreciated.
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Old 05-08-2012, 02:50 AM   #4
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Two tips

If the connector is wobbly, take the plastic sheath out of the factory connector and put it in the adapter

Russel one works well
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Old 05-08-2012, 04:51 PM   #5
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Thanks again.

I miss Maryland.
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Old 05-08-2012, 06:10 PM   #6
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I had to SLIGHTLY sand the portion of the tube outside of the bump to get it to slide on in my 99.
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Old 05-08-2012, 06:50 PM   #7
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Maybe you got 3/8 instead of 5/16 fitting?
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Old 05-08-2012, 11:39 PM   #8
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No, 8mm is .315" and 5/16" is .3125" so just slightly tight. I took off the coating, so maybe .001" per side or so.
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Old 03-27-2013, 12:57 AM   #9
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Hate to bump an old thread but I'd rather post here than start a new thread.

I just tried installing one of these tonight and if I yank really hard it comes off. I bought the Russell ones, not sure if this is common for this type of connector but it seems really unsafe to me. Is this fairly common?
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Old 03-27-2013, 01:00 AM   #10
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That's a little scary. How hard did you have to pull? I haven't ordered mine yet, but I plan to use it for the fuel rail and fpr at the tank.

Are you sure you've got the 5/16" one?
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Old 03-27-2013, 01:04 AM   #11
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Lets just say it was way too easy to even feel comfortable about pressure testing it. Definitely a lot easier than pulling the hose off my fuel filter.
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Old 03-29-2013, 04:00 AM   #12
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Dumb question: you have it clipped over the bead/flare/whatever on the line, right?
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Old 03-29-2013, 04:40 AM   #13
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Yeap, if I didn't you'd bet it'd slip right off. I think that the reason why mine slips off so easily is that if you notice in the instructions they give you, the barb has a square face for the seat to push against so it doesn't come off. AFAIK (at least mine is) the Miata one is rounded so with a little bit of force you can get it to unclip.

I ended up getting a tube nut fitting and flaring the hardline. Although a bit of a PITA to do it inside the car, I trust it a lot more.
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Old 03-29-2013, 04:53 AM   #14
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Good to know. This has me reevaluating my future install.
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Old 04-02-2013, 07:03 PM   #15
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Quote:
Originally Posted by Deepstriker View Post
Yeap, if I didn't you'd bet it'd slip right off. I think that the reason why mine slips off so easily is that if you notice in the instructions they give you, the barb has a square face for the seat to push against so it doesn't come off. AFAIK (at least mine is) the Miata one is rounded so with a little bit of force you can get it to unclip.

I ended up getting a tube nut fitting and flaring the hardline. Although a bit of a PITA to do it inside the car, I trust it a lot more.
What year is your car? This fitting is not what you want for an NA.
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Old 04-02-2013, 11:42 PM   #16
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Quote:
Originally Posted by TurboRoach View Post
What year is your car? This fitting is not what you want for an NA.
Thanks for pointing that out, I was about to ask that.
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Old 04-03-2013, 10:31 AM   #17
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Quote:
Originally Posted by Deepstriker View Post
Yeap, if I didn't you'd bet it'd slip right off. I think that the reason why mine slips off so easily is that if you notice in the instructions they give you, the barb has a square face for the seat to push against so it doesn't come off. AFAIK (at least mine is) the Miata one is rounded so with a little bit of force you can get it to unclip.

I ended up getting a tube nut fitting and flaring the hardline. Although a bit of a PITA to do it inside the car, I trust it a lot more.
What size did you end up using? Just a standard AN-6 37* flare? Or did you get all fancy and order some pimpy parker fitting to actually have 8mm?
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Old 07-10-2013, 03:58 PM   #18
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Quote:
Originally Posted by TurboRoach View Post
What year is your car? This fitting is not what you want for an NA.
Bringing this thread back as I was about to order Russell/Fragola fittings to transition my 5/16 hardline to -6 an hose (for my aeromotive FPR).

Is the hard line flare different on NBs? If not these fittings, what? I know compression fittings are no good on EFI.

-Zach
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Old 07-11-2013, 09:10 AM   #19
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Quote:
Originally Posted by thasac View Post
Bringing this thread back as I was about to order Russell/Fragola fittings to transition my 5/16 hardline to -6 an hose (for my aeromotive FPR).

Is the hard line flare different on NBs? If not these fittings, what? I know compression fittings are no good on EFI.

-Zach
Scratch that ... didn't realize the 99+ had spring connectors on the rails. Looks like I'm using a Parker tube nut/sleeve

-Zach
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Old 07-11-2013, 09:19 AM   #20
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Quote:
Originally Posted by thasac View Post
Scratch that ... didn't realize the 99+ had spring connectors on the rails. Looks like I'm using a Parker tube nut/sleeve

-Zach
Dont forget to need a 6mm to -6 adapter, NOT a 5/16 to -6. I tried 5/16 and the olive was a mouse nipple too small to fit over the line. I'm sure it would work fine with a flare adapter and that is on the agenda.
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