1le upgrade done, More Rear Brake Power now?

[Apogee]

Which D52s did you get?

To add to Scott's post, there are four piston/rotor configurations of the Wilwood D52 calipers, with two piston sizes and two rotor thicknesses as noted below. I think his concern is that maybe you have the smaller piston calipers, typically reserved for rear applications, mounted in the front.

#120-10936 2.00"/2.00" piston, 1.04" rotor
#120-10937 2.00"/2.00" piston, 1.28" rotor
#120-10938 1.25"/1.25" piston, 1.04" rotor
#120-10939 1.25"/1.25" piston, 1.04" rotor

Also, what pads are you using? The Wilwood pads should fit into their D52 calipers without any issues. Other D52 or D614 pad options from various manufacturers may have fitment issues between the dual-pistons of the Wilwood calipers and the rivets used to hold noise shims to the pad backing plate. This can cause the pads not to sit flush against the pistons in the calipers and while I wouldn't expect it to reduce your brake torque to the extent that you've described, it certainly won't help your pad wear.

Tobin
KORE3