06-07 WRX 4 pot brakes... FIT!

[zavikan]

and here I am sitting on a DBA cat and no one wants to tell me variences....

[the_paynter]

Originally Posted by zavikan

and here I am sitting on a DBA cat and no one wants to tell me variences....

i dont know what they are, im at work

[RoughSilver92]

Maybe I'm crazy but what about finding a pad that fits the sti caliper and svx rotor. Any chance of that?

[the_paynter]

its cheaper to buy a wilwood BBK then do brembos

[sowise]

Sorry I don't have any new updates on the rear 2 pot brakes I am still waiting on the backing plates. (I know you guys aren't specifically waiting on this).

The rear is my current focus but I plan to get around to the fronts eventually and if this thread doesn't have any updates by then I will post what I figure out .

[zavikan]

there was some other person who aquired a car that had the wilwood kit on them. When it came time to replace the rotors, he ended out forking out some stupid amount of cash to have them replaced. I have no problem spending $$$ for an upgrade, but not for one that is specifically designed to wear out!

[STeeL25T]

A friends GTO came with Willwoods on them with a warped rotor and he priced a new one at somewhere around 500 dollars or some other ridiculous amount. Eff that.

[RoughSilver92]

So I just went through the whole international catalog, and the best match I could find was the 2006 wrx with 316mm diameter, 56.7 height 30mm thick. These are the rotors that go with the caliper in question so it makes sense. Why hasn't anyone tried this rotor that came from the same car as the calipers?
Was this the year subaru switched lug pattern? If so could the rotor be drilled for the correct lug pattern? I've heard of it done with drums.

[BoxerFanatic]

2004 WRX STI was 5x100, as are ALL other wrxs and legacys, outbacks, bajas, and foresters, IIRC. including the 2006-2007 WRXs with these brakes.

2005-current WRX STI was 5x114, but also were equipped with brembos from the factory, so likely have a different disc.

The 2007 WRX STI Limited had black brembos, I believe... not the subaru logo'd brakes.

[NeedForSpeed]

Originally Posted by RoughSilver92

So I just went through the whole international catalog, and the best match I could find was the 2006 wrx with 316mm diameter, 56.7 height 30mm thick. These are the rotors that go with the caliper in question so it makes sense. Why hasn't anyone tried this rotor that came from the same car as the calipers?
Was this the year subaru switched lug pattern? If so could the rotor be drilled for the correct lug pattern? I've heard of it done with drums.

The four piston SUBARU caliper is designed for 25mm thick rotors.

I recently had some rotors redrilled, expect to pay $20-$25 per rotor.

[sowise]

Small update on the rear 2 pots.
I received the WRX backing plates I will need to press the wheel bearings out to mount them (I didn't expect that so going to be a bit longer before full fit). So far appears to be a perfect match for mounting on the SVX knuckle. I mounted the rear 2pot to the WRX backing plate and set the SVX rotor in place to see what kind of fit up there was. The dust shield on the WRX dust shield is bigger than ours by approx. 1/2" all the way around. However the rotor looks like it fits into the caliper fine and will be a nice fit. I will know more for sure when I press out the bearings and mount everything correctly.

[RoughSilver92]

Originally Posted by NeedForSpeed

The four piston SUBARU caliper is designed for 25mm thick rotors.

I recently had some rotors redrilled, expect to pay $20-$25 per rotor.

I dunno why the dba catalog says its a 30mm when a 30mm rotor wouldn't fit.

[NeedForSpeed]

Originally Posted by RoughSilver92

I dunno why the dba catalog says its a 30mm when a 30mm rotor wouldn't fit.

The big rotor is for the 4-piston BREMBO caliper, not the SUBARU caliper. The catalog is correct.

[RoughSilver92]

Originally Posted by NeedForSpeed

The big rotor is for the 4-piston BREMBO caliper, not the SUBARU caliper. The catalog is correct.

I see now, had to go back and have another look. So the situation is that the caliper bolts slightly farther out on the svx.

[Boxersix]

Originally Posted by sowise

Small update on the rear 2 pots.
I received the WRX backing plates I will need to press the wheel bearings out to mount them (I didn't expect that so going to be a bit longer before full fit). So far appears to be a perfect match for mounting on the SVX knuckle. I mounted the rear 2pot to the WRX backing plate and set the SVX rotor in place to see what kind of fit up there was. The dust shield on the WRX dust shield is bigger than ours by approx. 1/2" all the way around. However the rotor looks like it fits into the caliper fine and will be a nice fit. I will know more for sure when I press out the bearings and mount everything correctly.

Which backing plates did you purchase? I ask because the WRX's use a smaller bearing carrier in the rear than the STi's, and the SVX and Sti share the same spindle/carrier dimensionality in the back. You may find that the WRX backing plates will not bolt to the SVX knuckle assembly without some machining and welding.

I ran into this very issue with my WRX trying to swap in a six speed Sti gearbox, but retain the smaller WRX brakes so that I could fit my 15" rally wheels(which do not fit over the Sti brakes front or rear) To use the R180 in the back of a WRX you need the rear knuckles as you cannot press Sti hubs in WRX bearings(to use the larger R180 splined halfshafts)

You CAN make the backing plates fit if they don't immediately bolt up to the SVX rear knuckles but you'd need accent to a welder, and a plasma cutter makes the cutting far easier.