Wilwood 2pot rear brake upgrade.

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12-15-2002, 09:52 AM

#16

ImprezaRSDriver

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Car Info: 13BRZ, 11FXT, 08T25, 07STI, 02WRX

Re: Price comparo 4/2 pots: Perrin/Wilwood vs Subaru STi

Quote:

Originally posted by Kobayashi
Front(both kits use 294x24mm WRX rotor)

Wilwood 4pot $550 rotors not included
STi 4pot $600 rotors not included

Rear

Wilwood 2pot $650 290x10mm oem rotor included
STi 2pot $1000 290x18mm oem rotor included

k.

I hope that you know that you need to upgrade your dust shields if you want the 290mm rear rotor to fit. Or you can do what most people do, which is cut your dust sheild where the welds are. <--This is something that I do not recommend.

12-17-2002, 04:06 PM

#17

Kobayashi

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Re: Re: Price comparo 4/2 pots: Perrin/Wilwood vs Subaru STi

Quote:

Originally posted by ImprezaRSDriver
I hope that you know that you need to upgrade your dust shields if you want the 290mm rear rotor to fit. Or you can do what most people do, which is cut your dust sheild where the welds are. <--This is something that I do not recommend.

The $1000 I quoted includes the new BACKING PLATES with the larger 290mm dust shield spot welded at its perimeter. You can not bolt the 2pot rears to the stock backing plates. You have to swap the backing plates which requires pressing the hub out of the knuckle.

I removed the dust shields on the rear of my car for my (bolt-on) GT-B rear upgrade with my bare hands. Just twisted the thin metal until the welds gave up. I personally think their removal is a non-issue in terms of durability.

The rear backing plate/dust shield combo seems to confuse a lot of people. Just as a refresher, the center section of the stock backing plate is made of heavy stamped steel and is bolted to the knuckle and has integral 5.75" spaced mounting holes for use with any of the sliding rear calipers. The backing plate for the STi 2pots is similar but has 4.5" mounting hole spacing farther out from the center and a larger sheet metal dust shield spot welded at the perimeter.

k.

12-17-2002, 04:10 PM

#18

Kobayashi

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Quote:

Originally posted by push2
Thanks Kobayashi! Can you reccomend a vendor?

The 4000s have been back-ordered but you might also try Ninos Auto Accessories.

k.

12-17-2002, 04:15 PM

#19

Kobayashi

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Quote:

Originally posted by PimpWagon
Hey so does anyone know if there are special modifications needed to install the Wilwood 2-piston rear brake upgrade? I think they use larger rotors off a Legacy in the kit.

You need to either trim, bend, or remove the rear dust shield, then the Perrin bracket/Wilwood caliper bolts in the stock mounting holes on the backing plate.

Again, I have reservations about this setup. I think even the "H6" upgrade would be preferable to this kit.

k.

12-20-2002, 08:25 PM

#20

ImprezaRSDriver

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I think that if you do any upgrade you should do it right. I mean that if you should use the correct dust shield, mounting points, etc. Because when things are designed they are deisgned for a reason. I feel that if you remove the dust shield portion of the rear bracket, you increase the chance of getting something like a stone caught between the pads and rotor. Even though you might think that removing that piece will help out airflow, it probably does almost nothing but provide a bit more protection.

12-23-2002, 11:34 AM

#21

Kobayashi

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hmmm

I appreciate your caution ImprezaRSDriver. Do you also shower in a bathing suit?

In my case (BG Legacy) and in the case of any USDM WRX or GC Impreza owner, there is not in existence any rear backing plates for "correctly" mounting the 290mm rear rotors with the sliding single pot rear calipers on our cars. Unless you are willing to sacrifice your rear ABS pickups for the "correct" 290mm dust shield. The BE/H Legacys from which these parts would be sourced use entirely different rear ABS pickups.

The removal of the rear dust shields I still feel is a non-issue.

k.