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Old 03-21-2010, 11:05 PM
72NOVA454
 
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Drum/Disc Brake Proportioning Valve Help

I've just converted the front brakes on my 72 chevy from drum to disc. Now I have to do the master cylinder and proportioning valve. The proportioning valve I have is the correct one, but the ports line up differently from the old valve, so the lines have to be modified. What is the best way to do this? Do I have to cut the existing steel lines and make a splice? I do not want to replace all the brake lines in the car, I just have to redo the bends at the master cylinder. I have a tubing bender and a flaring tool if needed.

See photos below. Suggestions and comments please

the first 2 photos are my existing setup. the last photo is the new prop valve which is a different layout from the existing - therefore the lines have to be cut/refitted etc.




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Old 03-22-2010, 09:03 AM
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You did say you replaced the master cylinder with one designed for disc/drum didn't you? Whatever you do I would not cut and splice the lines. You should be able to get the correct lines from a repro shop, or cut, bend and flre new ones to fit.

Vince
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Old 03-22-2010, 10:59 AM
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It looks close enough that you should- w/just some relatively minor tweaking- be able to use the existing lines w/o cutting. Is there something I'm missing?
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