Bias Bar vs. Prop Valve

[jcs]

Shane;
Unrelated to your brakes, but I noticed you a fellow Pittsburgher - I am in Bethel Park. Hope to run in to you one of these days. Once your brakes are sorted, bring the car up to BeaveRun for one of their open track days - I did it in September and had an absolute ball in my 1968 - ran my 15 year old Radial T/A's down to the cords! I'm spending the winter playing with springs, race rubber, etc. Once the new track forum is open, I'll try and get more people up to one of those events. They are really nice people up there.

[Conekiller13]

The dual master cylinder set up gives true front to rear brake bias adjustment. When You adjust the balance bar Your giving Yourself a wide range of pressure difference. The knobe style prop valve adjusts only less from a given point. If Your master cylinder doesnt match Your caliper selection, I.E. rear calipers have more than 40% of the piston are of the front then no amount of knob twisting will work. With the same size calipers all the way around You need separate masters.

[SHANE 73Z]

Daniel,

I was hoping you would chime in here. I understand the difference in the 2 systems and I can understand why they have different curves to the biasing. How do you like the street performance of your dual master setup. My brakes will essentially be stock C4 front & rear calipers so the bore sizes work. I asked the last question because I havent heard much feedback on the bias bar setups on the street.

Given the fact that 3/4"MCs have been recommended to me it would seem if the bias bar were adjusted for even pressure I could use a knob type proportioning valve effectively and get a less linear biasing (more similar to a stock prop valve)

What is the rest of your brake system and how do you like its street performance??? I have no doubt the bias bar setup is superior for the track, but wonder if it is overkill or even just the wrong application for the street.

Shane