STI front brakes on BRZ (confirm)

[wootwoot]

Originally Posted by No Limit Motorsport

I haven't tried it yet... but Evo brembo's are mounted the same way the BRZ calipers are. I am guessing they will be straight bolt on, no bleeder swap necessary.

That sounds legit...

[gmookher]

Originally Posted by RYU

What is the stock front/rear brake bias on the STi? What is it on the BRZ? If someone knows please share! Thx

That's the most important question if you guys are actually doing this for performance (not just bling).

its not as easy as slapping parts that happen to fit to design a brake system that works correctly

getting into an accident with one off home made solution is all an insurance adjuster needs in a fatal accident to have a field day. without bias adjustment, this could be a downgrade rather than an upgrade, in an ABS car

that said, awesome job and looks great
how does it stop?? slide? lock up? do tell!

I want me some! but would want the bleeds in the right orientation for faster trackside repairs

[Element Tuning]

I'm not going to attribute this to the Brembo brake swap alone but I'm killing these guys under braking

If you want to know more about our FRS at the Ultimate Track Car Challenge look here:

http://www.ft86club.com/forums/showthread.php?t=12453

I did the Brembo swap because I had them laying around since the Brembos are completely inadequate on a full race STi. On the FRS they work very well.

Now I didn't want to risk trying to pull the plugs out of the heat battered aluminum calipers so I swapped them left to right. This does alter the piston orientation but from the drivers perspective you can't tell the difference. In the long run there is a chance the pad will not wear as evenly but only time will tell.

As for bias this is an EBD car so it doesn't matter, it's computer controlled and therefore will deliver/reduce power where needed. Like any car that uses a Big Brake Front you need to run at least the same friction compound or better in the rear since you now have more leverage due to the larger front rotor.

With ABS on brakes are great, predictable, strong, and trail braking was fine. With ABS off the fronts lock up first but I would think that's the case even OEM.

With that said I would never buy these Brembos new over some other track oriented products. Race pads are super expensive, the calipers aren't that good, they over heat, but hey I'm not your average user I've been talking with the guys at Essex about their kit but we'll see what I settle on for racing.

Thanks,
Phil Grabow

[jamal]

I bet there is already noticeably uneven wear on those pads.

[Racecomp Engineering]

Originally Posted by Element Tuning

As for bias this is an EBD car so it doesn't matter, it's computer controlled and therefore will deliver/reduce power where needed.

I could be wrong, but EBD will not solve all of your brake bias problems, especially at the track under hard braking. Maybe one of the other brake gurus can chime in.

- Andrew

[jamal]

EBD only works during abs engagement. So unless you are just slamming on the brakes and letting abs do the work on track your bias is going to be off.

And stoptech for example sizes the pistons on their kits to not alter the brake bias.

[tomt5078]

P and L's BRZ has some on the front..............Saw it at a car show over the summer!!!!!

[Element Tuning]

Originally Posted by jamal

EBD only works during abs engagement. So unless you are just slamming on the brakes and letting abs do the work on track your bias is going to be off.

And stoptech for example sizes the pistons on their kits to not alter the brake bias.

This is when I say listen to the guy who races with the stuff and has lap records, wins, and championships. The stoptech changes bias massively and the Brembo also changes bias on the FRS, I never said it didn't. On the FRS it's just a non issue but it's a significant issue on my STi as I can't get enough rear brake and it's a problem I have been working on.

Most of the newer Subarus do not have a brake bias valve anymore it's free flow to the rear. You will have more bias to the front if you have a larger rotor and more pad contact. Brake experts can be picky about their terminology so I'm going to say it's really more brake torque up front vs. Rear.

As for pad wear after two races I can't see any abnormal wear issues. All I notice is that my car is 8 seconds a lap quicker and it stops faster Tested and proven faster so if you want to go faster get bigger brakes (and sticky tires or it doesn't matter).

[fred_boosted]

Originally Posted by Element Tuning

This when I say listen to the guy who races with the stuff and has lap records, wins, and championships. ....
=

Thanks for feedback!

Did you retrofit the rears too?

[No Limit Motorsport]

Originally Posted by Element Tuning

This when I say listen to the guy who races with the stuff and has lap records, wins, and championships.]

If you guys don't believe him go on the NARRA time trials website and look at this guys track times versus the competition. When Phil has advice to give, keep quiet, and listen.

[jamal]

Well, I have seen the uneven wear from not having the right piston differential sizing first hand, so, in conclusion, installing sti brembos without swapping the bleeders is a terrible idea.

Also, I am associated with a couple of fast cars and track records. I just don't see how that's relevant to completely screwing up the brakes. A good test would be to go back to the stock tires and alignment and see if the car is still faster.

[mrha]

Originally Posted by Element Tuning

I'm not going to attribute this to the Brembo brake swap alone but I'm killing these guys under braking

If you want to know more about our FRS at the Ultimate Track Car Challenge look here:

http://www.ft86club.com/forums/showthread.php?t=12453

I did the Brembo swap because I had them laying around since the Brembos are completely inadequate on a full race STi. On the FRS they work very well.

Now I didn't want to risk trying to pull the plugs out of the heat battered aluminum calipers so I swapped them left to right. This does alter the piston orientation but from the drivers perspective you can't tell the difference. In the long run there is a chance the pad will not wear as evenly but only time will tell.

As for bias this is an EBD car so it doesn't matter, it's computer controlled and therefore will deliver/reduce power where needed. Like any car that uses a Big Brake Front you need to run at least the same friction compound or better in the rear since you now have more leverage due to the larger front rotor.

With ABS on brakes are great, predictable, strong, and trail braking was fine. With ABS off the fronts lock up first but I would think that's the case even OEM.

With that said I would never buy these Brembos new over some other track oriented products. Race pads are super expensive, the calipers aren't that good, they over heat, but hey I'm not your average user I've been talking with the guys at Essex about their kit but we'll see what I settle on for racing.

Thanks,
Phil Grabow

So are your bleeders on the bottom then? Thanks for the info Phil!

[jamal]

No, bleeders are not on the bottom otherwise he couldn't bleed the brakes. His calipers are on backward so the pistons are in the wrong order.

[kiks]

Originally Posted by jamal

No, bleeders are not on the bottom otherwise he couldn't bleed the brakes. His calipers are on backward so the pistons are in the wrong order.

You can bleed the brakes easily if the bleeders are on the bottom.

Just unbolt caliper, throw a bit of wood in between pads, and bleed them, bolt them back on once complete.

Takes 5 extra mins.