Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

Proportioning Valve maybe???

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Old Dec 14, 2008 | 03:45 PM
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BeastMachine67
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Default Proportioning Valve maybe???

I recently converted my 67's manual brakes into power brakes. I Bought the OME brake booster and the master cylinder. I knew that the orginal steel lines that go from the master cylinder to the Proportioning valve wouldn;t fit so, I odered some new lines from a company called "classic tube". I told them what I was doing and which brake lines I needed. however, I don't think they seem to fit. it lookes like nothing lines up right. And supposely these lines are bend for stock application. Could it be that maybe the Proportioning vavle for manual and power brakes are different?
Old Dec 14, 2008 | 04:08 PM
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More likely mounted in a different location. This is part of why I don't recommend pre-bent brake lines for anything except the single line going to the rear. I'd recommend bending your own using Napa's PolyArmour brake lines. They bend easily and are kink-resistant, so they're great for tight bends in small lines.
Old Dec 14, 2008 | 04:40 PM
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I never tried that because I'm no expert at it. I heard you can even cuase it to leak if you don't bend it right
Old Dec 14, 2008 | 05:08 PM
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Not really. The major problem with standard steel lines is that they kink if you're not careful. The PolyArmour lines have a teflon outer shell that allows them to bend easier without kinking. The easy way to do it is to cut a piece of coat hanger to the right length and bend a mockup the way you want it. Then use sockets to get the bends you want in the line. It's not really difficult, just time intensive.
Old Dec 14, 2008 | 05:09 PM
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You can buy a decent bender tool for cheap. You put the line in it and squeeze until you're bent at the angle you need. It's easier than it appears.
Old Dec 14, 2008 | 05:24 PM
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A tubing bender won't do you a lot of good for the short lines to the prop valve. The bends are too close together and usually at oddball angles, so you're better off with a couple sockets.
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