Author
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Topic: best tubing for fuel lines
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project66 Gearhead Posts: 246 From: Baton Rouge, LA Registered: Jul 99
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posted 06-13-2001 11:02 PM
Hey guys and gals- Can't find fuel line long enough to do my re-route. Was going to a plumbing supply tomorrow to pick up some tubing and do it myself. Not sure I know what I want though.Looks like 5/16" aluminum on there now. Any reason to get stainless? Most of this is going to be running under the car and there'll be quite a bit of bending involved. Thanks- JimO
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Fastback68 Gearhead Posts: 3053 From: Sucat, Paranaque, Philippines Registered: Jul 99
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posted 06-13-2001 11:36 PM
I thought copper was the best (or at least the easiest to work with) - or am I working with Stone Age technology here?
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Doc Gearhead Posts: 466 From: Redwood City, Ca. USA Registered: Jan 2001
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posted 06-14-2001 01:16 AM
The very old cars I work on have copper many times, it is not very good for fuel as it hardens with vibration and can crack, we've had aluminum crack on boats and we had one aluminum line go bad on Butcher's racer so it's rare (only if the client demands) for us to use it as well. We use steel for fuel especially on street cars, stainless is too hard to work with for most stuff but it looks cool.
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richard bohm Gearhead Posts: 373 From: tucson,az-luray,va Registered: May 2001
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posted 06-14-2001 03:07 AM
mild steel tubing is the best to use. i considered aluminum at one time but like doc said it and copper work harden and crack. when you plumb the line, use 3/8" tubing for a V-8 unless you are building a very healthy big block then use 7/16" or 1/2"
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project66 Gearhead Posts: 246 From: Baton Rouge, LA Registered: Jul 99
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posted 06-14-2001 09:00 AM
Thanks much, folks- 3/8" mild steel and compression fittings it is then. Do you teflon tape these fittings? Teflon is completely inert, right?Inching closer and closer to a running car. Gotta get a drive shaft and cut it, set up my battery in the trunk, hang my exhaust, rebuild my shifter and set up linkages, and get guages on line and I'm ready to go. Thanks again- JimO
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RonnieT Gearhead Posts: 827 From: Port Allen, La. 70767 Registered: Jun 99
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posted 06-14-2001 10:12 PM
Jim, Have you thought about ordering prebent lines from NPD. The V-8 5/16" line cost about $50 and they have all the clips and gromments required. ------------------ Ronnie 69 mach1 351W-4V 70 Torino GT 351C-4v with a "shaker" Mustangs and More Member #23
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Billgear Gearhead Posts: 182 From: Concord,CA Registered: May 2000
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posted 06-15-2001 12:04 AM
No teflon on the compression fittings!------------------ Regards, BillGear 1966 Coupe Balanced 302 AFR Aluminum 165cc heads Custom FTI Cam 565@284 Weiand Stealth Intake Hooker Super Comps T-5 Transmission with 3.55 gears All the suspension goodies. www.289mustang.com
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jkilroy Gearhead Posts: 1808 From: Vicksburg, MS Registered: Dec 99
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posted 06-15-2001 08:32 AM
5120 Aluminum, if its good enough for the FAA its good enough for me. It is much easier to flare than steel.------------------ Jay Kilroy 68' Fastback GT 390 "No such thing as a cam thats too big"
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project66 Gearhead Posts: 246 From: Baton Rouge, LA Registered: Jul 99
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posted 06-15-2001 08:44 AM
Well- Finally ran down some 3/8" stainless tubing. Got a flare-less fitting (swage-lock?) for my splice while I was at it, came home at got at it. Figured I could rework the existing line and get almost to the wheel well, use the new piece for the last bit. Length is right, but bending the tubing that's on the car is murder. Getting there though. Lacking the required zen (and mounting loops), I left it to come inside for a beer. Will tackle it tonight with a more suitable attitude.Yeh, Ronnie- looked at the prebent tubing. Figured I could do it cheaper- heh! No teflon- OK. Thanks, Bill. Good day, folks- JimO
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