Master Cylinder Questions

[zilverx]

As my roadster build drags on, I am beginning to question some of my earlier work. I have the Wilwood big brake option and the kit came with two different size master cylinders, a .725 and a .625. Logic at the time was to use the larger MC to the front because the larger calipers. There were no instructions advising which to use. I have since seen an article saying the the smaller MC should be used for the fronts to develop higher pressure. Which is the right way to go ?

Thanks everyone.

[rich grsc]

Smaller to the rear, as these are rear weight biased, more braking on the rear is needed.

[Papa]

What Rich said -- when you set up the bias bar, you want the rear to come in ahead of the front with about equal bias half way through the pedal travel and with more front bias coming in under the hardest braking conditions. Here is a quick video I made when I was playing with the bias adjustments:


https://www.youtube.com/watch?v=_JKTn6t6aoU

The rear MC is on the left and front is on the right in my configuration.