brake question

[Theslo1]

My 69 coronet came to me with no master cyl, lines, rear brakes, or any proportioning valves. My car had drum brakes on the front, I'm going with dart or volare disks. I understand disk brakes require different pressure than drum brakes and that is taken care of by the prop. valve. My question is; I was looking up valves and saw a two piece valve kit. In the description it states they all had the large brass block and the second, smaller brass block was factory for disk brake cars. But in a post I was reading on here, a member said the blocks are different even though they look alike, and they said nothing about a second, smaller block. I don't care about factory correct, I just want brakes that work properly. If I get the large brass block with the 5 lines on it for a disk brake car, do I need the other, smaller block with 3 lines? Also, both blocks have a electrical connection on them. I know where the wire for the one on the larger block is, but I don't remember any other wires.
Thanks

 

[67 coronet]

by 3 way small block,are you talking the splitter at the rear axle?make sure to get a disc drum master as well.

 

[Theslo1]

The 3 way I'm seeing is kind of a "y" shape. If you search ebay for "disk brake block mopar" you'll see a prop valve for sale by itself, and kits with 3 brass blocks, one prop valve, one "T" that I'm guessing goes on the rear, and the "y" looking one that has a electrical connection on it. I just remembered my neighbor has a early 70's b-body he's working on, I'll go look at it tomorrow. I hate being so clueless about this stuff.

 

[HEMI-ITIS]

The easy way:angel3:


http://www.jegs.com/p/JEGS-Performance-Products/JEGS-Adjustable-Proportioning-Valve/755192/10002/-1

 

[nm9stheham]

You will find what you need to know by going to the Inline Tube website and find your car's brake system parts. That site is a LOT better than depending on an eBay seller to get it rigth; Inline Tube knows it all and builds factory exact parts.

http://inlinetube.com/Prop Valves/pro_valves.htm

 

[Dragon Slayer]

You will find what you need to know by going to the Inline Tube website and find your car's brake system parts. That site is a LOT better than depending on an eBay seller to get it rigth; Inline Tube knows it all and builds factory exact parts.

http://inlinetube.com/Prop Valves/pro_valves.htm

The website actually has a lot of errors. The Rear Line is a proportioner for the rear drums, not a hold off. The Mopar Service manual is more accurate, and there are also some good generic brake websites that spell it out correctly all the components in a disc/drum setup and what they do. G

- - - Updated - - -

To the original poster, you will want a MC for a disc/drum set up. The Rear outlet will have a residual pressure valve behind the seat to hold 10lbs against the rear brakes, to prevent the springs from full retracting the drum. The distribution T will just split the front to the left and right, while keeping the rear separated. It has an electrical connection to warn when either the front or rear fail (lose pressure). This allows a piston to move to the failed side and light the warning. You then need a proportioner that control rear brake pressure (keeps it less) to prevent the rear from locking up since they need less pressure. There is also a metering or hold off valve for the front. This is normally attached via a separate line on the distribution block. This allow the front to be held off until the rear start to grab. This prevents the front from fully engaging with no rear brake pressure and allowing the rear of the car to fishtail and cause a spin. In Line has this discussion all wrong on the website. the Mopar set up can be 3 distinct parts for 70 and back, or you can get a combined valve. Drum/Drum did not have all the extra parts. G