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Old 01-30-2008, 04:13 PM
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Stainless brake lines, sealing flare fittings problems

I have ordered stainless brake lines and fuel lines for the 'staing I am working on. I have heard of problems getting these to seal at times.

Anyone worked on these before? Do you have any tips for getting the stainless fittings to seal better?

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Old 01-30-2008, 04:37 PM
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Just remember that stainless brake lines need to be flared at 37 degrees (which requires a special flaring tool) and not 45. Also its a single flare not a double as you would with steel lines. The metal is too hard to take a double flare and will most likely split if you try it. The same with trying to flare it at 45 degrees. If you flare at 37 degrees you should have no problems.
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Old 01-30-2008, 04:51 PM
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Stanless Brake lines

Nice catch Centerline I forgot about this issue and have been dinking with this problem for a day or two now. I hate it when I forget more than I know.

Bob
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Old 01-30-2008, 05:20 PM
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flair

Im really glad that there are so many people out there willing to help. I too just got my shipment of stainless lines and I had no idea you had to flair em at a different degree..thax guys..good info.
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Old 01-30-2008, 05:47 PM
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I have one of these

About one hundred dollars but works GREAT.



With the AN fittings ... the stainless lines can be made to look real nice.
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Old 01-30-2008, 06:33 PM
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stainless

All the fittings are set up for 45. How does it handle the 37 or are there different fitings?
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Old 01-30-2008, 06:44 PM
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I have been told that some of the newer stainless " kits " come withSS that can be double flared. and use 45 degree fittings. When I double flare ... I use a hydraulic flaring tool.



The hydraulic pressure makes a lot better fitting flare and I have not had any leak since buying this tool. It is not inexpensive ( about $300 ) but well worth it IMHO.
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Old 01-30-2008, 07:39 PM
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Soft annealed stainless tubing can get double flared at 45* .

I've done it. I don't advise doing it

Several companies are selling the tubing, Speedway has some, I believe that one of the specialty tubing companies does sell it also.

It is very hard on the flaring tools, you can't use a cheap one, I've messed up several good ones doing it. That Mastercool tool is a good one, Snapon and the other tool guys sell a similar tool.

Here are a couple of threads on the subject..
Flaring Stainless

Flared stainless brake lines

Hope this helps..

Mikey
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