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Discussion Starter · #1 ·
Ok guys, i need to know what you did as far as your proportional valve after the disc conversion. My car is a 70 dart and i put 73' discs up front.

I have what is believed to be a 73-76 A body prop valve. when i place it up on the frame, none of the lines match up , as far as size and rear/ front ports . It really looks like i have to make all new brake lines . doh

Is this what you guys had to do---or how did you route everything ?
 

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Discussion Starter · #5 ·
figures--i was told it was and bought it online .

anyone have one on here ?
 

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Discussion Starter · #8 ·
thanks - can u list what each letter corresponds to ?
 

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Sorry,

A= master cylinder marked F for front, be careful it's actually the rear reservoir.
B= right front brake
C= left front brake
D= rear brakes. They'll split downstream
E= Master cylinder marked R, again be careful this is the front or usually smaller reservoir.

B & C probably can be either way but A & E have to be correct. You want the larger reservoir to apply the front brakes.

Thanks to Ryan from N.H. for applying the letters to the picture.
 

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I have a extra a-body proportional valve but it is packed for the move that we are making this weekend. If you do not find one and are interested in the one that I have just let me know and I will look for it next week.
 

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This is handy information.
Is it possible to put this thread (of the picture and the description) up into the tech pages?
 

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Discussion Starter · #14 ·
hmmmm......that one looks just like the one i already have. ???
 

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The one I posted came out of a 73 Valiant with factory disc brakes.


... it was the newer single piston type not the earlier K/H.
 

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Weird...the bottom one looks like a B or E-body valve; The one I pulled for my brake swap came from a 74 Swinger with single-piston calipers and looks like the one ski posted. The other ones look like the valve I pulled out of my 74 Charger...I'm a little confused, also. ??? If it is a dual-piston/single-piston difference, would either one work?
 

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All my pre-73 cars have the brass square prop valve. Ma mopar switched over to the cast iron valves sometime in the early 1970's except in trucks.
 

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I'll see if I can dig out a 72 and earlier that went with the 4 piston K/H type. If I remember right they look similar to the one I posted but not exactly. It may take me a couple days to locate one. Hey 496dart I would just get a 35 dollar adjustable one and plumb it into your rear brakes.
 

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Discussion Starter · #20 ·
i might do that--who has them for $35?

i got another one on the way to try first
 
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