Mopar master cylinder---disc/drum application

[Rusty Davenport]

Mopar master cylinder has a 9/16 outlet at the front and a 1/2 outlet closer to the firewall.......can any of you brake Einsteins settle the arguement on which outlet goes to the rear drum and which goes to front disc ??? Thanks for any help.

[Rsmith38]

My MOPAR PERFORMANCE cyl (there are at least 2 - diff bore diameters) has metric fittings. I have used both diameters and with rear drums, then with Grand Cherokee rear disks. with no discernable difference. mine has front brakes on the front port (with line lock).

[Rusty Davenport]

Originally Posted by Rsmith38

My MOPAR PERFORMANCE cyl (there are at least 2 - diff bore diameters) has metric fittings. I have used both diameters and with rear drums, then with Grand Cherokee rear disks. with no discernable difference. mine has front brakes on the front port (with line lock).

I was asking about port sizes and placement, bore size is not the issue, thanks for your help

[Tom Goldman]

The outlet closest to the pushrod is typicaly used for the front brakes on most drum / disc brake applications.
The front piston has slightly less volume than the rear ,but both develoup the same pressure.
In race applications I've seen them plumbed both ways and work, but I always do mine as I said above.

[rallye bob]

http://www.swracecars.com/Files/Brak...g%2094-107.pdf
***Check the first NOTE.

[SPS]

We recommend front cylinder to the back and back to the front brakes in the kits we send out.

As Tom says, I too have seen them both ways with equal results.

FJ

Oh yes, the masters come with fittings that take standard 3/16 lines.

[Chris DeGidio]

Front port to the rear and rear port for the front on mine.Wilwood's on the front and 10" Mopar drums on the back.Works great.

[CrateCamaro]

I have front brakes on the front port and the rear brakes on the rear port closest to the pushrod like the S&W instruction say. Is there more brake pressure on one of the ports? This might be helpful on a stocker with a 2 step to lock the rear brakes on the starting line but I guess could cause some brake bias issues as well? Seems to be working well and the car doesn't get upset when a high brake pressure is applied. Not using a Strange unit, im using a Mopar unit but I do have a Strange unit that will be put into service for the 2014 season.