I gotta 64 F-85 with power brakes single master. Can i use a 67 dual master for drum brakes on my 64? Ive redone my brakes all around and really dont need the disks. I just want to be alittle safer.

 

Yes. The pin through the pedal arm gets moved to the other hole for manual brakes. You need the cup shaped retainer for the pushrod in the master cylinder; it cam on manual brake cars 67-72.

 

Cool thanks! Im gonna do it then!

 

I'm confused or missing something.

You're going from a single reservoir/line master cylinder to a dual reservoir/line type so the systems are seperated for safety?
Wouldn't you have to put a different distribution block in that seperates the front and rear braking systems and would have two inlets for the MC lines?

 

Not from what i have read on the HAMB. The master distributes the power different. Something about the size of the output.



Josh

 

Yes, you would need lines, dist block & M/C....I just inquired about the same set up for my '65 Vista! The Right Stuff Detailing has everything you need...

 

You have read incorrectly. There are several changes that are necessary.

First and most obvious is the dual reservoir master. To use this, you need separate brake lines for the front and rear brakes. You don't NEED a distribution block, since the only thing it does is provide a place for the differential pressure switch to live. Since the 64 doesn't have this warning light anyway, you don't need the block. Simply use a tee for the front brakes and run the rear line straight to the MC.

The second problem is that the dual MC will not bolt to the single MC power booster. The pushrod between the booster and the MC is shorter for the dual circuit MC. You either need a 67 booster or an aftermarket one for the dual circuit MC.

 

Thats what i thought about the lines. But the booster? I have a new booster now. When i got it, it came with an adjustable pushrod. How much of a difference is the length?

 

Thanks Joe, I forgot the booster, which had to be replaced!

 

Probably more than the adjustment. The single MC uses a pushrod that goes well into the MC piston. The dual MC uses a short pushrod that doesn't go very far. Just look at the end of the two MC's side-by-side and the difference is obvious.

 

Thanks Joe ill take a look at it. Im gonna go pick it up in a few min.

 

I assumed you were going to manual brakes. That is the situation where you need the cup shaped retainer for the pushrod, and to use the other hole in the pedal arm.