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Old 02-09-2012, 11:09 AM
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Power brakes for a 49 plymouth??? Help

I have been working on my 49 plymouth deluxe and am stumped when it comes to the brake system. The original system has small brake cylinders in each wheel's drum. I am going to upgrade at least the front to a disc brake. I am planning on buying a bracket that will allow me to bolt on "off the shelf" rotors, calipers, and pads. What I am confused about is dont I need/want a power brake booster and master cylinder? I am not a brake guy so I do not pretend to know what is right and wrong. If anyone can point me in the right direction I would really appreciate it! Thanks

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Old 02-13-2012, 05:36 PM
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Check out www.rustyhope.com. He sells disc brake kits for the old Mopars. He's extremely helpful, and I'm sure he can give you some guidance. Also, check out the www.P15-D24.com website. It's devoted to old Mopars. Do a search on that forum, and you'll find a lot of information about brakes. And if you can't find an answer, then post your question. There's a wealth of old Mopar knowledge there, with folks that are glad to help out.
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Old 02-14-2012, 01:46 PM
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I am using the RustyHope set up on my 48 Plymouth Coupe with stock rear brakes and stock master cylinder. Just need to plumb in some residual valves in the lines. 2 pound valve goes to the front, 10 pound valve to the rear. These are used because the master cylinder is lower than the brake cylinders and this keeps pressure in the lines so you don't have a lot of pedal travel before the brakes engage.

A dual master cylinder would be better but if you stick with the stock standard transmission you would have to come up with your own mounting bracket. If you go with an automatic ECI sells a dual master / bracket combo but it is not cheap.

No real need for power brakes. I have not had a problem with mine at all in 3 years of driving.
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