GTM roll cage modifications and race car build log

[kabacj]

Hey John,

Here is my 2 cents,I used the corvette abs and don't have a bias problem but in the process of researching the compatibility of the master cyls with the ebcm and adjustment of the balance bar I spent some time on the phone with wilwood tech service....That been said you could use a 3/4" and 5/8" master to adjust you bias but it was not recommended with the corvette brakes. As far as bias on the pedals assy it is done with the balance bar and it is what it is,you need to make sure that you have free play on your master cyl rods or your will be dragging you brakes.An adjustable valve is an option. On the clutch side you need to cut the rod or you will bend it, I change form the FF supplied 3/4" master to a 5/8" master for a better pedal feel and slave operation.

Mike

On the brake caliper vs piston setup.

Stoptech custom sized the pistons in the calipers they sent to match the willwood master cylinders and pedal assembly that comes with the kit. I must say I am happy with it and the balance bar is all I need in order to adjust bias. I am sure you cant get to the same place by adjusting the master cylinders to the calipers you ended up using.



Thanks for the info on the clutch MC. I knew I remembered cutting something

Also note that pad material will make a HUGE difference, so if you are having an issue where the rears are locking up first and the pad material is different front to rear, the first thing I would do is make sure and change to the same material at both ends. This can have a dramatic effect on how the brakes operate.

Crash,

I ended up using the performance friction PFC 7793.01.18.44 in the fronts with matching compound rears. I like the bite and ability to modulate as well as the fact they last forever. Normally you get good wear or good bite, but I think the light car and 14 inch rotors helps get both.