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Old 11-25-2006, 07:48 PM
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brake connections won't seal

Put a complete new brake system (master cyl and stainless) on my 68 GS Buick. After bleeding brakes, leaks ocurred at the front brake hose connection and proportion valve connections. Using dot 5. Any recommendations? Thanks Frank

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Old 11-25-2006, 08:23 PM
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Did you double flare your lines yourself or did they come double flared?
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Old 11-25-2006, 08:36 PM
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I would almost guess they are single flared. I have seen that posted before on other forums. Henry is correct in that they need the double flare.
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Old 11-25-2006, 08:55 PM
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brakes

Now not to be stupid, but how do I tell,single or double? Or am I stupid? Frank
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Old 11-26-2006, 01:56 AM
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If you did them you would know if you did them double flare. If you bought them already done then most likely they are double flare.

To do a double flare you first make a bulge (with the little black things in the pic below) in the line and then you flare it. You end up with a fold at the outside part of the flare and the end of the tube on the inside.
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Old 11-26-2006, 11:33 AM
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brakes

The brake lines are double flared from The Right Stuff. I'm going to take it all apart and start over again. Thanks for your help. Frank
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Old 11-26-2006, 02:10 PM
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Probably bad flares. Overtightening wll generally only make it worse. Any reputable auto shop can flare a line for you
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Old 11-26-2006, 02:46 PM
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leaks

Thanks T. After a very FRUSTRATING day I decided to load it up a take it to a brake shop or the bone yard. Frank
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Old 11-26-2006, 03:03 PM
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The double flares are somewhat more difficult to make properly than single flares. You could have a couple of bad flares. Overtightening will cause leaks also...I general just snug my brake lines and then just gradually tughten untill they seal...kinda got to sneak up on them, Lmao. Anyway good luck.
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