Compression fittings for aluminum fuel line ??
#3252558
08/19/24 09:47 PM
08/19/24 09:47 PM
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Joined: Oct 2005
Posts: 9,022 Ontario, Canada
Stanton
OP
Don't question me!
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OP
Don't question me!
Joined: Oct 2005
Posts: 9,022
Ontario, Canada
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Anyone use aluminum/brass comression fittings on aluminum fuel line ?? I'm talking about aluminum AN compression fittings that use a brass compression sleeve. Are these an acceptable alternative to flaring the tube ends ?? Intended use is aluminum EFI fuel lines.
Last edited by Stanton; 08/19/24 09:47 PM.
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Re: Compression fittings for aluminum fuel line ??
[Re: Stanton]
#3252578
08/19/24 11:27 PM
08/19/24 11:27 PM
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Joined: Jan 2003
Posts: 6,162 Melbourne , Australia
LA360
master
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master
Joined: Jan 2003
Posts: 6,162
Melbourne , Australia
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Used them a long time ago on a low pressure system. It was a Barry Grant 220HR pump with a 1/2" line. Worked well
Not sure how it would go on an EFI system though, I've no experience in that regard.
Alan Jones
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Re: Compression fittings for aluminum fuel line ??
[Re: Stanton]
#3252607
08/20/24 06:27 AM
08/20/24 06:27 AM
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Joined: Jan 2003
Posts: 4,196 Shelby Twp. Mi
HardcoreB
master
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master
Joined: Jan 2003
Posts: 4,196
Shelby Twp. Mi
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Anyone use aluminum/brass comression fittings on aluminum fuel line ?? I'm talking about aluminum AN compression fittings that use a brass compression sleeve. Are these an acceptable alternative to flaring the tube ends ?? Intended use is aluminum EFI fuel lines.
In a word, yes, specifically it is an acceptable alternative to flaring. But as has been said I wouldn't recommend it unless it was on the inlet side of an EFI fuel system with good consideration IRT all aspects of its routing. (Shock and vibration compliance.)
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Re: Compression fittings for aluminum fuel line ??
[Re: HardcoreB]
#3252630
08/20/24 11:08 AM
08/20/24 11:08 AM
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Joined: Jan 2003
Posts: 19,528 Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,528
Las Vegas
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IMO just use a proper flare on the line and dont look back....
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: Compression fittings for aluminum fuel line ??
[Re: Al_Alguire]
#3252659
08/20/24 12:49 PM
08/20/24 12:49 PM
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Joined: Oct 2005
Posts: 9,022 Ontario, Canada
Stanton
OP
Don't question me!
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OP
Don't question me!
Joined: Oct 2005
Posts: 9,022
Ontario, Canada
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IMO just use a proper flare on the line and dont look back.... Yeah, leaning that way !! Now to find a reasonably priced 37 degree flare tool !!
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Re: Compression fittings for aluminum fuel line ??
[Re: Stanton]
#3252685
08/20/24 02:25 PM
08/20/24 02:25 PM
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Joined: Feb 2005
Posts: 20,266 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,266
PA.
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After you wreck a car because of a compression fitting you kinda shy away from them. I know I did.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.38@138.67
Livin and lovin life one day at a time
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Re: Compression fittings for aluminum fuel line ??
[Re: Stanton]
#3252735
08/20/24 07:40 PM
08/20/24 07:40 PM
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Joined: Dec 2005
Posts: 12,265 Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 12,265
Fulton County, PA
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IMO just use a proper flare on the line and dont look back.... Yeah, leaning that way !! Now to find a reasonably priced 37 degree flare tool !! You could get away with putting a 45 on soft aluminum tubing, Single flare is all that is needed. The fittings would draw it all together. Much preferable to compression fittings.
If the results don't match the theory, change the theory.
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Re: Compression fittings for aluminum fuel line ??
[Re: CMcAllister]
#3252752
08/20/24 08:33 PM
08/20/24 08:33 PM
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Joined: Oct 2005
Posts: 9,022 Ontario, Canada
Stanton
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Don't question me!
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OP
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Ontario, Canada
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You could get away with putting a 45 on soft aluminum tubing Yeah, that thought crossed my mind too. Summit has a 37 degree flare tool for under $40.. Even though I only have to do six flares, that's reasonable enough and I can probably sell it afterwards for $25.
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Re: Compression fittings for aluminum fuel line ??
[Re: Stanton]
#3252835
08/21/24 10:57 AM
08/21/24 10:57 AM
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Joined: Dec 2021
Posts: 1,305 Loudoun County, VA
Brad_Haak
pro stock
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pro stock
Joined: Dec 2021
Posts: 1,305
Loudoun County, VA
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I inserted a socket extension backwards and tapped on the end w/ a hammer to flare out aluminum fuel line against the shape highlighted in the attached image. Doesn't have to be perfect because the soft aluminum will conform to the fitting's surfaces when tightened down. ![hammer hammer](/ubbthreads/images/graemlins/custom/hammer.gif)
2021 Challenger 6.4L Scat Pack 1320 100% stock: 1.680, 11.894 at 113.75 (DA 175 ft) weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)
1973 Challenger 452 ci street/strip [2008] pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
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