Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB

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-   Suspension | Chassis | Brakes -- Sponsored by 949 Racing (https://www.ft86club.com/forums/forumdisplay.php?f=59)
-   -   TireRack has big brake kits for FR-S. (https://www.ft86club.com/forums/showthread.php?t=4958)

Cheddar 04-12-2012 06:02 PM

TireRack has big brake kits for FR-S.
 
http://www.tirerack.com/brakes/resul...3&autoModClar=

Check it out!

eikond 04-12-2012 06:11 PM

I saw those a few days ago.. I was on TireRack hoping they would have the BRZ/FRS picture up so that I could look at how different wheel options looked on the car..

From what I've been reading, the BRZ has very good brakes right out of the factory.. perhaps a pad upgrade and maybe some stainless steel lines might be an improvement, but I don't think a BBK will be worth the cost for 99% of BRZ owners.

Cheddar 04-12-2012 06:15 PM

Quote:

Originally Posted by eikond (Post 181844)
I saw those a few days ago.. I was on TireRack hoping they would have the BRZ/FRS picture up so that I could look at how different wheel options looked on the car..

From what I've been reading, the BRZ has very good brakes right out of the factory.. perhaps a pad upgrade and maybe some stainless steel lines might be an improvement, but I don't think a BBK will be worth the cost for 99% of BRZ owners.

That's exactly what happen to me lol

Capt Canuck 04-12-2012 06:23 PM

Quote:

Originally Posted by eikond (Post 181844)

From what I've been reading, the BRZ has very good brakes right out of the factory.. perhaps a pad upgrade and maybe some stainless steel lines might be an improvement, but I don't think a BBK will be worth the cost for 99% of BRZ owners.

That's it.
Pads, lines, fluids = job done, for all but those who are making it a focused HPDE car or bling-mobile.

djdnz 04-13-2012 11:01 AM

3,000 ha that's 10% of the car's cost.

Bling bling though.

NESW20 04-13-2012 09:44 PM

Quote:

Originally Posted by Capt Canuck (Post 181852)
That's it.
Pads, lines, fluids = job done, for all but those who are making it a focused HPDE car or bling-mobile.

i think most people wanting to turn it into a track car will be able to find more reasonably priced brakes that will perform just as well if not better. i don't plan on doing anything other than pads, lines, and fluid to the brakes on mine.

blu_ 04-13-2012 09:47 PM

Quote:

Originally Posted by djdnz (Post 182401)
3,000 ha that's 10% of the car's cost.

Bling bling though.

BBK's will be pretty lame on this car unless you are putting out seriously more than stock power... I really think it will make the car worse, even when tracking.

OrbitalEllipses 04-13-2012 10:30 PM

Quote:

Originally Posted by blu_ (Post 182929)
BBK's will be pretty lame on this car unless you are putting out seriously more than stock power... I really think it will make the car worse, even when tracking.

That depends entirely on how well developed the kit is. There's no way around it: the track will demand more heat capacity than the stock brakes have. Bigger brakes are the only way to accomplish that. I agree that street cars will see no benefit, but track focused kits (AP Racing) will likely be well-developed.

old greg 04-13-2012 11:21 PM

Quote:

Originally Posted by OrbitalEllipses (Post 182943)
Bigger brakes are the only way to accomplish that.

cough*ducting*cough ;)

Big brakes add rotational inertia (less acceleration) and unsprung weight (less grip), so unless you're getting brake fade despite having proper ducting, a BBK is only going to increase your laptimes. More cooling is almost always a better option than more thermal capacity.

colHolm 04-13-2012 11:52 PM

Quote:

Originally Posted by old greg (Post 182967)
More cooling is almost always a better option than more thermal capacity.

:word:

I'm excited to get some time with the car and see if I can make something fuctional/good looking using the foglight bezels.

OrbitalEllipses 04-14-2012 03:20 AM

Quote:

Originally Posted by old greg (Post 182967)
cough*ducting*cough ;)

Big brakes add rotational inertia (less acceleration) and unsprung weight (less grip), so unless you're getting brake fade despite having proper ducting, a BBK is only going to increase your laptimes. More cooling is almost always a better option than more thermal capacity.

Lighter aluminum calipers with 2pc floating rotors won't add that much rotating or unsprung mass if any at all.

old greg 04-14-2012 09:07 AM

Quote:

Originally Posted by OrbitalEllipses (Post 183034)
Lighter aluminum calipers with 2pc floating rotors won't add that much rotating or unsprung mass if any at all.

I hate to break it to you, but those 4 piston calipers are going to be heavier than stock, and even if the rotors are the same or less weight, the weight saved is in the center of the disk while weight is added further out past the perimeter of the oem disk. Rotational inertia is proportional to radius^2; Larger diameter rotors mean less acceleration, there's just no way around it.

OrbitalEllipses 04-14-2012 12:15 PM

Quote:

Originally Posted by old greg (Post 183086)
I hate to break it to you, but those 4 piston calipers are going to be heavier than stock, and even if the rotors are the same or less weight, the weight saved is in the center of the disk while weight is added further out past the perimeter of the oem disk. Rotational inertia is proportional to radius^2; Larger diameter rotors mean less acceleration, there's just no way around it.

That makes sense, but makes no difference to me. I don't plan on going past fluid/lines/pads.

zoomzoomers 04-14-2012 01:06 PM

I don't see myself getting a BBK for this car, but did you guys notice that the 345mm is more expensive (by $1k) than the 355mm BBK? I wonder why that is. I didn't get a chance to read in detail, but maybe the 345mm kit uses larger calipers? More pistons? Monoblock calipers? Makes me wonder.

Turbowned 04-14-2012 03:19 PM

STi Brembos pretty much bolt on, and you can get 'em used for ~$1200 plus rotors/pads. Why the hell would anyone buy a new Brembo kit for that much?

Personally, I'll probably try to use WRX 4pot/2pot calipers because I know the Brembos will be overkill.

OrbitalEllipses 04-14-2012 04:04 PM

Quote:

Originally Posted by Turbowned (Post 183233)
STi Brembos pretty much bolt on, and you can get 'em used for ~$1200 plus rotors/pads. Why the hell would anyone buy a new Brembo kit for that much?

Personally, I'll probably try to use WRX 4pot/2pot calipers because I know the Brembos will be overkill.

Holy Christ. How many times do I have to say this. IT WONT WORK (PROPERLY). I won't even repeat why, just search and figure it out for yourself.

blu_ 04-14-2012 04:37 PM

Wrx brakes aren't 4 pots either. This car comes with Wrx brakes.

OrbitalEllipses 04-14-2012 05:35 PM

True and not true. WRX had 4/2 pots in 2006/2007. The rears wont fit at all, the fronts will bolt up but will STILL NOT FUNCTION PROPERLY.

Turbowned 04-16-2012 11:55 AM

Quote:

Originally Posted by OrbitalEllipses (Post 183258)
Holy Christ. How many times do I have to say this. IT WONT WORK (PROPERLY). I won't even repeat why, just search and figure it out for yourself.

Hmmm, well GReddy drives their car on the street with those brakes so something tells me it does work

Dave-ROR 04-16-2012 12:31 PM

Quote:

Originally Posted by OrbitalEllipses (Post 183285)
True and not true. WRX had 4/2 pots in 2006/2007. The rears wont fit at all, the fronts will bolt up but will STILL NOT FUNCTION PROPERLY.

Actually those WRX calipers (the alum 4 pots) are NOT differential bored (based on statements of those on here who own them anyways, and RCE stated that also IIRC), so you can swap L to R and R to L to get the bleeders up top.

OrbitalEllipses 04-16-2012 01:16 PM

Ah, well I've never owned the Nissan 4 pots. The Brembos are differential bored so the point still stands in their case.

FWIW, the Nissan 4 pots provide no thermal capacity over stock; they use the same thickness 290mm diameter rotor as the stock WRX. I've been under the impression we're getting the same 290mm rotors. In the WRX they provided a rearward bias shift, which may not be necessary in this application.

Dave-ROR 04-16-2012 01:36 PM

Quote:

Originally Posted by OrbitalEllipses (Post 184346)
Ah, well I've never owned the Nissan 4 pots. The Brembos are differential bored so the point still stands in their case.

FWIW, the Nissan 4 pots provide no thermal capacity over stock; they use the same thickness 290mm diameter rotor as the stock WRX. I've been under the impression we're getting the same 290mm rotors. In the WRX they provided a rearward bias shift, which may not be necessary in this application.

Agreed.

They will provide a little better feel and modulation, plus more even pad wear, but that's about it.

Oh, and looks for those into that.

SkullWorks 04-16-2012 02:23 PM

the pad wear issue is so minimal it isn't worth discussing, staggered pistons are a cute idea that makes so little difference it will probably disappear on all but the most expensive multi pad calipers.

I make a wilwood 12.2" kit for Nissan S-chassis cars, it saves weight over the stock setup, with the wilwood FSL calipers (4pot) and 2 piece rotors (i make hats also) but the huge advantage is pad thickness and replacement cost for consumables, it is almost exclusively bought by people that want a trackable setup that has better than Z-32 upgrade performance with lower consumable cost.

The biggest issue with most BBK's is 1, they are generally too big (bling factor) and 2 way too expensive both up front and down the line, example wilwood's OTS kit for s13 BBK, the kit costs~400 more than the kit I make after all parts are bought and on the car, and they use more expensive consumables with less pad thickness...they get you coming and going...

Turbowned 04-16-2012 07:45 PM

Wait one cotton-pickin' minute!!! They drive this car on the street in this configuration... how are you saying this "won't work"?

"The brakes on the car are perhaps the easiest things to upgrade. The Brembo calipers for a 2004-2012 STI will bolt right in the front. For front rotors use the STI parts from a 2004 with the 5x100mm bolt pattern. For rear brakes use the 2008+ STI parts and drill the rotors for a 5x100 bolt pattern. The bolt pattern is the one thing we really hate about the car. 5X100mm is an unusual pattern instead of the very common 5x114.3mm. This greatly limits the number of aftermarket wheels available for the car. If someone at Scion/Toyota/Subaru is reading this, please change this before production, pretty please! A whole industry and all the fans and buyers of the car will thank you! Subaru changed so you can too!"

From MotoiQ: http://www.motoiq.com/magazine_artic...cion-fr-s.aspx
http://photos.motoiq.com/MotoIQ/Tech.../IMG2542-L.jpg
http://photos.motoiq.com/MotoIQ/Tech.../IMG2544-L.jpg

Dave-ROR 04-16-2012 08:34 PM

Re-read our posts again.

OrbitalEllipses 04-16-2012 09:18 PM

You obviously didn't get it, because that MotoIQ article actually got it wrong.

Turbowned 04-17-2012 11:17 AM

Alright, fine. I emailed GReddy to ask if they could shed some light on the subject, because they're running these brakes on their Scion Racing FR-S drift car. They must be able to clarify these concerns. Personally I could give a crap less because I have no intention of putting them on my car, but no doubt a lot of people will want to do it if possible, and it would be nice to get all the facts straight.

old greg 04-17-2012 11:30 AM

Those front calipers aren't STI Brembos. They have "Greddy" embossed across the outboard face, for one thing. It's hard to tell from the picture, but they don't appear to be differentially bored. And if you'll notice it has multiple bosses cast into it for bleed screws, so all they had to do to adapt it to the new platform is to drill and tap the other boss instead.

coyote 04-17-2012 11:57 AM

Quote:

Originally Posted by Dave-ROR (Post 184305)
Actually those WRX calipers (the alum 4 pots) are NOT differential bored

Correct. They have 32mm pistons all around, but I seriously doubt they will be a good swap for this car.

Now, can someone please tell us the the front and rear piston sizes of the BRZ?

Dave-ROR 04-17-2012 02:42 PM

Quote:

Originally Posted by coyote (Post 185159)
Correct. They have 32mm pistons all around, but I seriously doubt they will be a good swap for this car.

Now, can someone please tell us the the front and rear piston sizes of the BRZ?

I don't think anyone knows. The part numbers don't match any current subaru so I wasn't able to find out that way :(


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