flairing tubing - Team Camaro Tech
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post #1 of 9 (permalink) Old Dec 3rd, 00, 06:22 AM Thread Starter
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I've always tried to double flair any brake lines or fuel lines that I make. What I'm wondering is which way is best; single flair or double flair? What is the benifit of the double flair? Would a single flair work just as well? It's hard to find a GOOD double flair tool.

'69 RS/SS396 pro street
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post #2 of 9 (permalink) Old Dec 3rd, 00, 10:25 AM
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A single flair will crack over time due to fatigue and vibration. A single fair is ok if used on a part where it does not matter if it develops a crack. generally all automotive lines require a double flair which will not crack over time.

With that said, I have seen people cut brake lines to size and then single fair them and they worked fine.
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post #3 of 9 (permalink) Old Dec 3rd, 00, 02:27 PM
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Single-flaring brake pipes is pretty risky. The best flaring tools are made by Imperial-Eastman, 1151 Bryn Mawr Ave., Itasca, Illinois 60143. I have several of them, bought from Speedway Motors, Lincoln, Nebraska (402) 474-4411. Just tell them what angle flare you want - they have 45-degree for most automotive flares, and 37-degree for AN fittings. Have used mine for many years, they still work like new (they're precision-machined and heat-treated, unlike the junk from China).

'69 Z28 Fathom Green
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post #4 of 9 (permalink) Old Dec 3rd, 00, 02:44 PM Thread Starter
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You're right about that China junk. I've always done the double flair but was just wondering if I was waisting my time. Thanks for the info on the tool. How much does it cost? What size tubing does it do?
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post #5 of 9 (permalink) Old Dec 3rd, 00, 09:17 PM
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Sears has a double flaring kit at a reasonable price.
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post #6 of 9 (permalink) Old Dec 3rd, 00, 11:49 PM
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Be careful what tool you buy, I used a "chinesse" in a repair of a rear line, the one that goes to the rear brake cylinder, and after doing the double flare I was ready to install the line but thanks God I looked at the floor and saw the adapter that makes the double flare and notice that the center stem was broken. It was located inside the line end. I had to cut the line around 1/2" back, re-make the flare and re-bend the line so it reached the cylinder. My recomendation, purshase the best one you can afford and try to always double flare your lines for safety.
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post #7 of 9 (permalink) Old Dec 4th, 00, 05:21 AM
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I have the Sears one and it doesn't do a very good job. It slips and gets the flair off center.

68 RS, Ash Gold,pwr windows,Hounds tooth
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post #8 of 9 (permalink) Old Dec 4th, 00, 06:10 AM
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Mild steel tubing, and aluminum up to -6, requires double flaring. Stainless tubing only requires a single flare. Be sure to use seamless tubing and/or conical seals.

Click here to see see my car and hear 5-speeds. http://www.geocities.com/casanoc
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post #9 of 9 (permalink) Old Dec 4th, 00, 07:29 AM
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I use the Snap on (Blue point)
Model TF 528 B It does the job, but all flare tools I've used are a pain in the ***
I've had this one for over 5 years
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