Mopar master cylinder question

[Jim Hawkins]

Which port should go to the front brakes on the mopar/chrysler aluminum master cylinder?
I have seen this master on many cars and plumbed both ways. Mine is front port to front brakes. Correct?

[cad]

That is how mine is plumbed.

[David Lee]

do you use the one with the largest brake fluid capacity?

[Keith 944]

The larger Reservoir goes to the brakes that hold the most amount of fluid

[Tom Goldman]

Per the instructions for a Strange Mopar style master cylinder. The reservoirs are the same size front and rear, however the piston volume is larger on from the port closest to the pushrod.

■ The outlet port nearest the pushrod supplies the most fluid volume and should be plumbed to the calipers requiring the
most volume. Typically a drag race only car will have the largest calipers on the rear, while a street driven car will have the
largest calipers on the front. Attach lines accordingly

Since most S/SS cars have the same calipers front and rear it really does not matter although I always plumb the larger section[ closer to the pushrod] to the rear brakes.

[Jim Caughlin]

Originally Posted by Tom Goldman

Per the instructions for a Strange Mopar style master cylinder. The reservoirs are the same size front and rear, however the piston volume is larger on from the port closest to the pushrod.

■ The outlet port nearest the pushrod supplies the most fluid volume and should be plumbed to the calipers requiring the
most volume. Typically a drag race only car will have the largest calipers on the rear, while a street driven car will have the
largest calipers on the front. Attach lines accordingly

Since most S/SS cars have the same calipers front and rear it really does not matter although I always plumb the larger section[ closer to the pushrod] to the rear brakes.

That's the way I have always done it but to be honest, I have seen a ton of cars that were done both ways over the years and it doesn't seem like it has had much effect either way.

[CMcAllister]

Originally Posted by Tom Goldman

Per the instructions for a Strange Mopar style master cylinder. The reservoirs are the same size front and rear, however the piston volume is larger on from the port closest to the pushrod.

■ The outlet port nearest the pushrod supplies the most fluid volume and should be plumbed to the calipers requiring the
most volume. Typically a drag race only car will have the largest calipers on the rear, while a street driven car will have the
largest calipers on the front. Attach lines accordingly

Since most S/SS cars have the same calipers front and rear it really does not matter although I always plumb the larger section[ closer to the pushrod] to the rear brakes.

This is the correct answer. Especially for a 4 rear caliper set up.

And make sure there some sort of retainer, besides the rubber ring, to positively keep the pushrod in the MC.