STI front brakes on BRZ (confirm)

[protpibe]

Yeah, if brake pad wear is the only concern, I honestly don't care.

here is the description of the benefits associated with differential bore calipers:

Differential bore calipers -- As the surface of the rotor heats up, the clamping force of the pistons has to be increased to avoid brake fade. If the caliper has multiple pistons (or multiple pairs of pistons), the brake rotor surface is initially heated by the pistons pushing against the brake pad at the leading edge of the caliper, making the rotor surface hotter when it rotates back to the pistons closer to the trailing edge of the caliper. Therefore it helps if the pistons closer to the rear edge of the caliper are larger. Differential-bore calipers use smaller pistons up front, larger pistons toward the back.

With that being said, I can see why an inverted differential bore caliper can cause uneven wear, but i don't think the performance difference will be very significant at all. I'm not an expert on this, just discussing If there are any blatant issues, I'll be the first one to put my hand up and say i was stupid for not swapping bleeders.

[SkAsphalt]

Originally Posted by protpibe

Are you sure your bleeders are swapped? Your brake line looks like it's in the top hole.

Yeah, bleeders were swapped.. but while they were installed but my father installed the calipers on the wrong side, I did not catch it. So my month of trying to drill out the old plugs and get everything swapped was wasted

However my pads are wearing evenly (probably because my car is simply a fast DD, not a track, sprint or ****ing around car) so I am not worried about it. This fall I have a list of to-do's and pulling them off and re-installing them correctly is on that list.


Ssssh, don't tell anyone.

[Element Tuning]

Originally Posted by protpibe

Just installed 05 STI callipers on to my BRZ. I decided against going through the hassle of swapping bleeders after reading Element Tunings real world experience without doing it. It's not that I'm incompetent or lazy, I just preferred not to due it since they are 9 year old calipers and more than likely would cause more headaches than anything else. I'll post up impressions on how it goes so that we get some more real world data on it.

When I went out and bedded the pads tonight I noticed immediately that there is a lot more bite in the brake pedal now. I'm not sure what to look for in degraded performance, but I was pleasantly surprised when I hit the pedal aggressively from 100km/h.

If uneven pad wear or premature pad wear are the only detriment to this orientation then I honestly could care less.

Also, are there any concerns in mounting the brake line outside of the posts if you do swap the bleeders?

Yes there is a little uneven pad wear over time in a race application. It's minor however to the point that I would never run a track pad that low for the uneven wear to be an issue (no loss of braking performance or useable life). I'm not so sure in a street application the uneven wear would even occur. If it's of any concern you can flip the pads each race weekend.

If you have a set of "Brownbos" like me I'm not so sure I would take the risk to swap the bleeders but if you have a set that haven't been track abused, swap the bleeders

Thanks,
Phil Grabow

[Element Tuning]

Oh and for the record my 355mm StopTech kit on our Time Attack STi has uneven pad wear. Now it's a different type of uneven pad wear but still just saying, check your pads frequently regardless. We actually flip those pads from the outer to the inner also to get a little more life out of them.

[Fizz]

Hey guys, thought I'd give an update on my front pad wear. Bit of background: my Brembo calipers were installed the "wrong" way, meaning that I simply moved the calipers from left to right, and did not bother swapping the bleed screws around.

From my research prior to fitting the calipers, I was warned about uneven pad wear due to incorrect piston orientation etc etc. But the main reason I did not want to swap the bleeders over was because I really wanted the brake line closest to the caliper banjo to be secured by those "tabs", and I was prepared to live with uneven pad wear.

I had some free time over the Easter break so I removed the pads to inspect, and was fully expecting to junk them and fit new pads. But I was surprised to see the pads were wearing nicely!!! If anything, there's only a slight hint of uneven wear on one side, but nothing major. I just flipped the pads over and will inspect them again after another 5000 miles or so.




Pads are Stoptech Street Performance. Fitted back in June 2014 and have traveled approx 7,500 miles of daily use. Never tracked or autocrossed, but it had a good number of spirited driving with fairly hard braking.

[sidetrak06]

Originally Posted by Bomb3r

http://www.motoiq.com/magazine_artic...cion-fr-s.aspx

This has the parts identified for the swap, also, MRT in Australia
( www.mrtperformance.com.au ) have the kits for about au$2.5 fitted with NEW parts only used.

This article states that the rear calipers need to come off of an 08 STI? Is this true or can we use an adapter? Also, does this conversion work with the stock wheels or are there clearance issues? Thanks

[King Tut]

Originally Posted by sidetrak06

This article states that the rear calipers need to come off of an 08 STI? Is this true or can we use an adapter? Also, does this conversion work with the stock wheels or are there clearance issues? Thanks

You can use an adapter for the older STI calipers:

http://www.fastwrx.com/pages/bolting...-brembo-brakes

http://www.fastwrx.com/collections/b...and-rotors-kit

They will not clear the OEM wheels.

[sidetrak06]

Originally Posted by King Tut

You can use an adapter for the older STI calipers:

http://www.fastwrx.com/pages/bolting...-brembo-brakes

http://www.fastwrx.com/collections/b...and-rotors-kit

They will not clear the OEM wheels.

Thanks, Do you need 18's at a minimum?

[King Tut]

Originally Posted by sidetrak06

Thanks, Do you need 18's at a minimum?

A perfectly sized 17" wheel might fit, but it has been a long time since I have done the research.

[protpibe]

The offset of the stock wheels won't work with Brembos, like at all

[Draco-REX]

Originally Posted by sidetrak06

Thanks, Do you need 18's at a minimum?

Any wheel that fits a Subaru and "Clears Brembos" will work. It's not just diameter, but the face as well. For instance, the WedSport TC105n wheels in 17x8+42 clear and will bolt right up. But Rota Grids in 18x9.5+44 will not.

[Fizz]

Originally Posted by sidetrak06

This article states that the rear calipers need to come off of an 08 STI? Is this true or can we use an adapter? Also, does this conversion work with the stock wheels or are there clearance issues? Thanks

For front calipers, any year model will fit just fine. But pay attention to the mounting bolt size as I believe 05 models had longer bolts and the rest used shorter bolts. Reason being the 05 models had a sort of "stiffening bracket" that bolted on behind the front caliper, hence requiring the longer bolts.

For rear calipers, pre-08 will require adapter, but 08+ onwards will bolt on directly.

[Fizz]

Originally Posted by Draco-REX

Any wheel that fits a Subaru and "Clears Brembos" will work. It's not just diameter, but the face as well. For instance, the WedSport TC105n wheels in 17x8+42 clear and will bolt right up. But Rota Grids in 18x9.5+44 will not.

That's true. Another example is that even though the TC105N in 17x8 +42 fits perfectly, the Rota Titan in 17x8 +42 (which is a replica of the TC105N) will not clear without a 6mm spacer.

[mister.bond]

Can someone please give me subaru Partnumber of that TIE BAR

its for install the STI Front Calipers