STi Brembos

[jamal]

Originally Posted by yo$hi

2.) switching the calipers to make sure the bleeder screw is pointing up so you can bleed the system. On the sti the calipers are on the back of the rotor while the frs/brz are facing the front. So you have to take the right side brembo off the sti and put it on the left side of your frs/brz.

The piston sizes in the calipers are staggered, so if you simply swap them from side to side you will have them backward which will result less than optimum braking performance and significantly uneven pad wear (some people say it wont, but it will, I promise, and have seen it first hand). To do it right you need to swap the bleeders from the top to the bottom of the caliper and keep them on the right sides.

[Dave-ROR]

Originally Posted by jamal

The piston sizes in the calipers are staggered, so if you simply swap them from side to side you will have them backward which will result less than optimum braking performance and significantly uneven pad wear (some people say it wont, but it will, I promise, and have seen it first hand). To do it right you need to swap the bleeders from the top to the bottom of the caliper and keep them on the right sides.

This is why I kept asking the op if he swapped the bleeders

[Spartan65]

Aren't the factory brakes the same as the last year Supra oems?

[jamal]

Originally Posted by Spartan65

Aren't the factory brakes the same as the last year Supra oems?

No, they're Subaru brakes. WRX front and 2010 LGT rear.

[mrha]

Does anyone know if we can use the front brembos from an EVO or Z33?

[yo$hi]

Originally Posted by mrha

Does anyone know if we can use the front brembos from an EVO or Z33?

The evo calipers won't bolt up because if I remember correctly the bolt holes are to far apart by a half inch or so. No clue about the Z33.

[bpracer]

Originally Posted by Mark Slide Squad

If you install the whole front and rear STi Brembos, I would think that if you upgrade the master cylinder that it'd be much better as opposed to stock master cylinder. After all, you've got 12 pistons total to move on the Brembos as opposed to 4 pistons total on the stock calipers. Yes, the pistons are smaller on the Brembos, but still they have a lot more volume overall with the added pistons. I wonder if the STi brake master cylinder bolts on? Has anyone tried?

Yes you have more pistons, but there are effectively moving half the distance compared to a sliding caliper's pistons.

[OmarGC]

u check to see if the stock wheels cleared the brembo calipers? Have a few people asking me but I can't help em as I don't have access to a 5x100 wrx/sti with brembos mounted at the moment.

[jamal]

Originally Posted by bpracer

Yes you have more pistons, but there are effectively moving half the distance compared to a sliding caliper's pistons.

Exactly. Two opposed pistons move the same distance and require the same fluid displacement as one piston in a sliding caliper.

The front brembos only have very slightly more piston area than the stock brakes and with the larger rotor you are getting about 10% more brake torque given the same pressure. Here's the interesting part: Going to the rear brembos actually moves the bias even farther forward because the pistons in that caliper are smaller than stock and the rotor isn't that much bigger.

So your bias is actually better with only the front brembos compared to putting them on all four corners.

[kmbkk]

Originally Posted by yo$hi

The evo calipers won't bolt up because if I remember correctly the bolt holes are to far apart by a half inch or so. No clue about the Z33.

Can anyone confirm this concerning the EVO calipers (specifically 8/9)? The reason I ask is on Brembo's website it shows the same GT caliper for STIs and EVOs (8/9). There are a lot of EVO calipers out there for cheap, so just thought I'd ask.

[Mark Slide Squad]

Originally Posted by kmbkk

Can anyone confirm this concerning the EVO calipers (specifically 8/9)? The reason I ask is on Brembo's website it shows the same GT caliper for STIs and EVOs (8/9). There are a lot of EVO calipers out there for cheap, so just thought I'd ask.

If you go on the WRX forums, people have talked about this. Apparently they are slightly different. For one, the Evo calipers have an external cross over pipe (the metal pipe that connects to the two halves of the caliper to supply fluid) and the STi is internal cross over. Also, the thread pitch for the caliper mount bolts is different from Subaru Brembos. I also saw that the Evo uses a slightly smaller diameter, but thicker rotor as opposed to the STi version. I could be backwards on that though, so don't quote me. You're better off just getting STi Brembos which are pretty much a bolt on affair.

[kmbkk]

Thanks for the info! That makes a lot more sense to me. It may fit, but not ideal and with more effort to make it fit. STI calipers it is.

[CSG David]

The '04 STI Brembos are a great upgrade for the car especially if you're running about 250-300hp and stickier tires. If you're running these brakes with OEM type street pads and OEM Michelins, you are probably not going to notice that much of a difference. After all, your brakes provide the clamping force, but your tires ultimately help you do the stopping as well.

Keep in mind that you guys will be going through rotors and brake pads as well. Price check them to see if it's worth it to pay those prices before upgrading to the STI Brembos.

On another note, I have a friend who installed this on his WRX and has stated the brake bias is completely off on track. I suggest anyone who runs this front setup to also run the rear Brembos as well. The moment you decide to make the jump from street to track, you will have already saved yourself the headache of figuring out the brake bias for your car.

[mact]

You can find cheap STI remans at

www.rockauto.com