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Brakes Power to Manual 1973 Charger

padam

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Location
Canton, OH
1973 Dodge Charger Rally
Originally 318 Auto
Now 413 4 Speed

Brakes were power disk front,drum rear
Changed from power to manual.

Ordered adapter and push rod from Dr Diff
Ordered master cylinder from amazon Raybestos MC39178

This was a mod Ive wanted to make for quite some time.

Reasons were to save weight and gain room in engine compartment.
Also poor braking at idle due to large cam, and low pedal making heal and toe difficult.

I hate working in the interior, and I ******* hate working under the dash. That being said I got the job done.

So there were a few issues:
Dr diff Plate came with stainless hardware, flat heads and button heads.
I don't like either so I ditched them in favor of alloy steel flat heads and socket head cap screws.

The Heim joint supplied needed a lot of clearance on the brake pedal side. Unfortunately, I didn't realize his and thought I would have to move the brake pedal to the right. I took the pedals out to do this but I don't think I needed to. Only the heim joint needed modified.

I wanted to retain the reinforcement plate, so I had to modify it for the lower mounting position of the master cylinder. Then I had to make a plate to cover the original hole.

Took it for a drive today. It stops good. Pedal is a little soft at first, but then firms up.I think it needs bled some. I like the pedal height.
Stops plenty good for a drag car, but for street it needs some work.

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I use a little spacer with his Heim joint rod but looks like you got it figured out.
There a different factory reinforcement plate for manual brakes.
What size master cylinder bore did you use?
 
This mc has the 1.125 bore.
If this going to be street driven more I would probably have tried to find something smaller.

Opinions on pedal effort are subjective, and there are so many variables in a brake system that I figured I would throw something cheap on and see how it works.

Too many people seem to have quality issues with the low volume small bore MC's.
 
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