Early A dual master recommendation?

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TAK65

TAK65

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Hi all,
as my 63 Dart seems to need a brake overhaul, decided to upgrade the master cylinder too. The subject probably been beaten to death already but I can't seem to find a definite answer which one to choose, so somebody please chime in.
As my car is and will be registered as a "classic vehicle", here in Spain they are kinda strict about any upgrades, regardless their necessity. So I will have to stick with the original 9" drum brakes, non power assisted. I would like to have the new master appear as close to stock as possible, with minimal modifications needed and hope nobody will notice. Have a single cylinder in now, not original but looks like one.
So I need a 1967 master cyl then? Or are the 68, 69, 70 and so on identical? I remember reading in some thread that a 1971 and up would be somewhat better, is that so?Looking at ebay ads, they all look the same but perhaps in reality they're not?
 
TAK65 said:
Hi all,
as my 63 Dart seems to need a brake overhaul, decided to upgrade the master cylinder too. The subject probably been beaten to death already but I can't seem to find a definite answer which one to choose, so somebody please chime in.
As my car is and will be registered as a "classic vehicle", here in Spain they are kinda strict about any upgrades, regardless their necessity. So I will have to stick with the original 9" drum brakes, non power assisted. I would like to have the new master appear as close to stock as possible, with minimal modifications needed and hope nobody will notice. Have a single cylinder in now, not original but looks like one.
So I need a 1967 master cyl then? Or are the 68, 69, 70 and so on identical? I remember reading in some thread that a 1971 and up would be somewhat better, is that so?Looking at ebay ads, they all look the same but perhaps in reality they're not?
Click to expand...
67 drum brake master with the 67 -72 metering block will be as close to factory as you can get. It will look correct and work exactly the way it is supposed to work. I used this set up when I restored my 65 Barracuda back in the 1990's It's a bolt in job with no modification at all .You are only adding a metering block and an additional line to feed the rear brakes from the new master to that new metering block that gets bolter on to the frame rail where the old single block is now.

DSC03252a-.jpg
 
valiantwagonguy said:
67 drum brake master with the 67 -72 metering block will be as close to factory as you can get. It will look correct and work exactly the way it is supposed to work. I used this set up when I restored my 65 Barracuda back in the 1990's It's a bolt in job with no modification at all .You are only adding a metering block and an additional line to feed the rear brakes from the new master to that new metering block that gets bolter on to the frame rail where the old single block is now.

View attachment 1715709548
Click to expand...

Thank you! I read from an article at earlycuda.org that you can use the original distribution block, just block one outlet and run an entirely new line from the master directly to the rear brakes. But apparently with this 67-72 metering block I can use the existing line from the block to the rear brakes and only need new lines from the master to the block?
 
TAK65 said:
Thank you! I read from an article at earlycuda.org that you can use the original distribution block, just block one outlet and run an entirely new line from the master directly to the rear brakes. But apparently with this 67-72 metering block I can use the existing line from the block to the rear brakes and only need new lines from the master to the block?
Click to expand...
I wouldn't do it that way especially if you are trying to get it to be inspected by a system that does not tolerate any alterations.USE THE CORRECT STUFF FOR A 67 and you will have no problems with the inspector. It will look and act correct
 
valiantwagonguy said:
I wouldn't do it that way especially if you are trying to get it to be inspected by a system that does not tolerate any alterations.USE THE CORRECT STUFF FOR A 67 and you will have no problems with the inspector. It will look and act correct
Click to expand...

Thank you again! Finding the metering block is one chore though, master cylinders seem to be everywhere.
 
Chrysler called the new distribution block the "safety switch".
That's because it incorperated a switch that turns on if there is a big difference between front and rear pressures.
Note the front reservior is for the rear brakes.

The system was introduced to technicians here:
1967 Chrysler Dual Hydraulic Brake System - Session 232
 
Mattax said:
Chrysler called the new distribution block the "safety switch".
That's because it incorperated a switch that turns on if there is a big difference between front and rear pressures.
Note the front reservior is for the rear brakes.

The system was introduced to technicians here:
1967 Chrysler Dual Hydraulic Brake System - Session 232
Click to expand...
This block also incorporates a ground switch to activate an idiot light if you loose line pressure in either front or rear systems.
 
Just realised all masters cylinders are not equal. Some are for all drums, no power. Some for drums with power. Then front discs, rear drums etc. If I found a great deal for one with power brakes, would it make any difference vs one for non-power brakes (which I have)?
 
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