Stock SS rear brakes and the new rotors compared. Nice increase in diameter, which equates to more 'leverage' for the calipers.
New rear rotor against the stock SS dust shield. Notice in the above pic how the rotor 'sits inside' the dust shield?
The dust shield is only tacked to the backing plate with very weak tackwelds. I popped it off easily with a screwdriver. I then used a grinder with a sanding disc to knock down the leftover tackwelds.
Note that the grinding is completley optional. If you don't have the proper tools, you can do wih just popping off the dust shield with a screwdriver.
Now that the rotors fit, we need to get the caliper to fit. The SS (and any non-2 pot or Brembo Subaru) needs an adapter to fit the 2 pot rear calipers. My problem was that the brackets had a bit of interference with the backing plate. This is a known issue with the Kartboy brackets and it may or may-not happen on any given car. I'm guessing that Subaru's production tolerances varied alot on the rear hubs/backing plates.
The problem.
The solution. Looks like if your not luckier than me, a grinder is your only friend.
There is still plenty of thickness after grinding. I would guess that any strength I removed by grinding is more than made up for by the addition of the very rigid bracket when the two are finally bolted together.
Now it's just a simple matter of bolting the new caliper to the bracket.
Fronts went so fast I forgot to take pics, but suffice it to say that it's as simple as any other brake job. Did take a pic with the old vs. new rotor.
Brake feel is good. Ultimate braking power is about the same, as it's the same tires on the road. Pedal is a bit softer than expected, about the same as stock. I was hoping for a firmer pedal. Modulation (controlability) is much better however. I'll be looking into a larger master cylinder and the single stage booster soon. Have not done any emergency stops or hard driving (to test thermal capacity) yet.
Of course I had to switch the wheels to something that would clear these new binders.
