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Old 12-26-2017, 04:03 AM   #376
Garthium
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Would the D721 platform swap over and down to the D722 braket and caliper wise. Trying to put 2 pots on the front of a 99 gf8. Wheels are 16x6.5 55offset. Also rotor size would be a given right?
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Old 01-15-2018, 02:37 AM   #377
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Quick double check.... i have an 05 wrx stock brake set up currently... picking up the 4/2 pots... do i need the rear hub as well off an 06-07? do i need the rear bracket to have em fit? am i wrong to believe the fronts mount up fine with bigger rotars?
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Old 01-16-2018, 02:59 AM   #378
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Quote:
Originally Posted by hunterdms View Post
Quick double check.... i have an 05 wrx stock brake set up currently... picking up the 4/2 pots... do i need the rear hub as well off an 06-07? do i need the rear bracket to have em fit? am i wrong to believe the fronts mount up fine with bigger rotars?
Fronts mount with the same rotor, rear calipers need an adapter to fit a larger rotor size.
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Old 01-16-2018, 05:34 AM   #379
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Quote:
Originally Posted by 68sprintb View Post
Fronts mount with the same rotor, rear calipers need an adapter to fit a larger rotor size.


yeaaa i’m just gonna get the whole rear hub off of an 06.
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Old 01-16-2018, 09:13 AM   #380
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Our v1 bracket will work with Brembo or 2 pot rear calipers.



http://www.knsbrakes.com/c/caliper-i...+Brackets+v1.1
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Old 01-17-2018, 06:17 AM   #381
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Quote:
Originally Posted by hunterdms View Post
yeaaa i’m just gonna get the whole rear hub off of an 06.
You don't need the whole hub, just the caliper bracket that mounts the knuckle to the caliper.
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Old 01-18-2018, 12:44 AM   #382
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Quote:
Originally Posted by 68sprintb View Post
You don't need the whole hub, just the caliper bracket that mounts the knuckle to the caliper.


is there a bracket stock on the 06-07? cause i don’t wanna spend 225 for the kartboy ones when i have the chance to get the hubs for nearly free
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Old 01-19-2018, 02:14 AM   #383
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I assume the hubs are the same for 02-07 and the bracket is the thing that changed but you'd have to verify that. If the hubs are basically free grab em, maybe you can resell em and recoup some costs.
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Old 02-04-2018, 06:08 AM   #384
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Default 07 sti and 16 sti

so my question is i have a07 sti and 16 hyperblue sti

i want to put my 07 sti calipers on my 16 sti because they obviously gold and put my 16 calipers onto my 07 im not swapping rotors just calipers

i was wondering is this possible will i need some custom brackets? any input would be much appreciated

i know i could take my 16 calipers off and powder coat them i just dont want to spend the extra money and have the down time when i could possibly swap them

my IG manusti18 would be much appreciated for a follow
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Old 02-04-2018, 01:48 PM   #385
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The rear calipers on the pre-2008 mount to the backing plate. The backing plate bolts to the upright and holds the parking brake stuff and caliper and the dust shield is on there too



The 02-05 WRX and 06-07 wrx have the same upright and hub, but different backing plates. You can swap them, but you have to press the hub off and take apart all the parking brake stuff to do it (and buy new wheel bearings). If you had just had a complete set of 06-07 wrx uprights then yes you could put those in.
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Old 02-04-2018, 01:51 PM   #386
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Quote:
Originally Posted by manusti18 View Post
so my question is i have a07 sti and 16 hyperblue sti

i want to put my 07 sti calipers on my 16 sti because they obviously gold and put my 16 calipers onto my 07 im not swapping rotors just calipers

i was wondering is this possible will i need some custom brackets? any input would be much appreciated

i know i could take my 16 calipers off and powder coat them i just dont want to spend the extra money and have the down time when i could possibly swap them

my IG manusti18 would be much appreciated for a follow
The front calipers are the same and swap between the cars.

The rear calipers will not. The mounting is different and there is no bracket to adapt the new caliper to the old car. However, you could put the 07 calipers on the 16 with KNS's V2 adapter brackets. You would not want to though because the gold caliper has smaller pistons, at I think 36mm instead of 40 so it will effect the bias and how your brakes feel.
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Old 02-04-2018, 04:57 PM   #387
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Quote:
Originally Posted by 68sprintb View Post
I assume the hubs are the same for 02-07 and the bracket is the thing that changed but you'd have to verify that. If the hubs are basically free grab em, maybe you can resell em and recoup some costs.
The rear knuckles are the same 2002 to 2007.

The rear backing-plates are the same 2002 to 2005 and were changed 2006 to 2007 to accommodate the 2-pot calipers.

Installing an adapter to a 2002 to 2005 to install a 2-pot caliper is much, much easier than removing the knuckle assembly, pressing out the hub, and then removing the backing-plate and then the reverse order to reinstall.
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Old 02-10-2018, 06:57 PM   #388
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wow, I wish I saw this post before I just replaced all brake components on my car. This is good stuff. Thanks homie
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Old 02-19-2018, 12:14 PM   #389
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on 2018 WRX i need to downsize front brakes to fit 15" gravel rim.
any chance You know if there are rotors with 5x114 bolt pattern to combine with 06-07 WRX calipers?
...just don't want to re-drill 06-07 rotors
thanks
Quote:
Originally Posted by KNS Brakes View Post
Yes they will fit....BUT... your stock front rotors are much larger than the 06-07 4 pot upgrade.

Stock = 316x30mm
4 Pot = 292x24mm

You can upgrade the front to the Z32 caliper upgrade. This allows you to keep the stock front rotor, and go to a caliper that is similar to the 4 Pot.

Z32 Upgrade done on BRZ/FRS

-Nick
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Old 02-19-2018, 12:28 PM   #390
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Quote:
Originally Posted by alexinvancouver View Post
on 2018 WRX i need to downsize front brakes to fit 15" gravel rim.
any chance You know if there are rotors with 5x114 bolt pattern to combine with 06-07 WRX calipers?
...just don't want to re-drill 06-07 rotors
thanks
These should be them. I do not know if they work on 2018's though. I'm sure KNS will chime in soon.

http://www.knsbrakes.com/c/car-serie...-+Single+Rotor
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Old 02-19-2018, 12:40 PM   #391
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Yeah those will work, and actually, you can't re-drill the 06-07 rotors because they won't fit over the larger 5x114 hub.

Stock rear brakes will the rally wheels fine and there's also a bracket to use 2-pots. KNS makes that too.
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Old 03-25-2018, 10:54 PM   #392
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Default power stop

so I have a 97 lgt, was looking to grab a power stop kit for it but they only make the front. so... here I am
can anyone help me through all this info... I don't want to lose my parking brake by upgrading to the wrong wrx or leg setup
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Old 03-26-2018, 03:29 PM   #393
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I don't know what a power stop kit is, but I have WRX front brakes and Legacy "H6" rear brakes on my LGT. No change in bias, no issues with parking brake, and same caliper pistons sizes but bigger rotors all around. Fits under the stock wheels and works really well as an upgrade.

To do that you need front caliper brackets from a 02 wrx and calipers and brackets from an 00-04 legacy or 99-07 impreza. Then the appropriate pads and rotors.
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Old 04-01-2018, 02:10 AM   #394
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Quote:
Originally Posted by jamal View Post
I don't know what a power stop kit is, but I have WRX front brakes and Legacy "H6" rear brakes on my LGT. No change in bias, no issues with parking brake, and same caliper pistons sizes but bigger rotors all around. Fits under the stock wheels and works really well as an upgrade.

To do that you need front caliper brackets from a 02 wrx and calipers and brackets from an 00-04 legacy or 99-07 impreza. Then the appropriate pads and rotors.
to someone who is out of the loop, that info is pretty baffling. I will be looking to buy a new set of everything and tossing my current brakes. I don't know if my rotors are toast and keep warping, or if my calipers are hanging up and need to be revamped somehow, but for the effort involved in assessing that for me, I want to have front and rear rotors, pads, and calipers and just just slap on the new stuff.

ps power stop is just a brand of aftermarket braking components. hopefully it's ok to post a link... this is the kit I had mentioned.
https://www.carid.com/powerstop/1-click-z23-evolution-sport-drilled-and-slotted-brake-kit-with-calipers.html
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Old 04-28-2018, 03:32 AM   #395
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SO it talked about rotors. but what about calipers. my question is what Calipers would give more bite and stopping force on my 2012 impreza 2.0 I. what calipers do I have ? a 2/1 set up. would steel lines, and some good amsol dot 4 fluid help. I autocross and right now the front wants to slightly dive, pedal is squishy, and I get some vibrations if i stay in a high gear and left foot brake ? what does the vibrations mean caliper sticking or warped rotors ?
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Old 04-28-2018, 09:37 AM   #396
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to get an unbias/technical breakdown of brake setup, i'd start here:

one of the key take away items:
brake pads are more important than the number of pistons within the calipers.

brake balance is barely thought of by most people. most people get as aggressive/powerful front brakes with virtually no thought to the rear brakes.

the setup i've gone with is:
EBC Yellow front pads
Hawk DTC-30 rear pads

the DTC-30 are super aggressive. the Yellows are NOT as aggressive. this causes a slightly more rearward balance. i get less nose dive than a 'stock' setup or a 'same pads front and rear' setup.

AMSOil makes a good brake fluid, but i run the Wilwood EXP600 fluid as it has better wet/dry boiling temps.
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Old 05-01-2018, 11:02 PM   #397
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Quote:
Originally Posted by jamal View Post
I don't know what a power stop kit is, but I have WRX front brakes and Legacy "H6" rear brakes on my LGT. No change in bias, no issues with parking brake, and same caliper pistons sizes but bigger rotors all around. Fits under the stock wheels and works really well as an upgrade.

To do that you need front caliper brackets from a 02 wrx and calipers and brackets from an 00-04 legacy or 99-07 impreza. Then the appropriate pads and rotors.
not sure entirely what you mean by needing calipers and brackets from one car or another... is there a full kit for instance for like a full front end brake kit for a wrx so it would contain rotors pads and calipers then I just take out of box and put on car? (then the same from the H6 for the rear... which is 04 outback?) I'll likely do steel lines as well while I'm doing all this
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Old 05-05-2018, 01:50 PM   #398
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First off, apologies for the massive quote from the first post... I did some trimming and also highlighted in red and hot pink some of the pertinent info on calipers. Original content referencing it is below the quotes.

Quote:
Originally Posted by jamal View Post
To start, you can put almost any set of Subaru brakes on any other Subaru. If you want WRX brakes on your L or something you pretty much just have to buy some and bolt them on. There are some exceptions, however, mostly relating to the rear, which are explained later on. And also in this thread
...
In the rear, things get a little more tricky. There are different sized parking brakes, and different caliper mounting, and "old" vs 'new" rear uprights. Brake parts on the current cars with multi-link rear suspension do not interchange with older strut suspension parts. The 00-09 Legacy, while a multi link design, still uses the older mounting. it also appears that the tribeca, which has the new rear suspension still uses "old" rear brakes.
...
276x24mm
This uses a two piston sliding front caliper and there are three caliper/bracket designs. One for the 91-94 Legacy SS/TW, an early Legacy 2.5GT/Impreza RS bracket (~96-99), and a Later RS/GT bracket (03+). It's possible to exchange some of these calipers onto taller WRX brackets as long as the pad shapes match.
Applications:
91-94 Legacy turbo
96-01 Legacy GT
96-01 Outback
00-04 Legacy non-GT
98+ Impreza RS/TS/2.5i
98+ Forester
Some base model BRZ/FRS/86s in other markets.

292x24
294x24mm
295x25.5mm
This is the WRX front rotor. It uses a two piston sliding front caliper or the Subaru fixed 4-pot. The sliding caliper, bracket, and pad were changed in 03 and that's something you need to be aware of when upgrading from RS brakes or purchasing pads. The 4-pots are only on the 06-07 WRX in the US, though they were on many older non-US STis and WRXes (the black calipers with Subaru across them). Generally 16" wheels are required with these brakes but there are some 15" wheels out there that work. Also 16x6.5 Subaru wheels do not clear 4-pots. The other rotor I listed at 292 is a newer rotor on the Legacy and maybe like 11-14 WRX. They are a little heavier than the older 294mm parts and should be interchangeable.
Applications:
01 Legacy GT LTD?
02-04 Legacy GT
05-09 Legacy non-gt *
01-13 Outback
02-14 Impreza WRX (including 08, which uses 2-pots)
03+ Forester
Baja
BRZ/FRS/GT86
...
316x30mm
This uses a two piston sliding caliper similar to the other 2-pots, although brackets and calipers aren't compatible between other 2-pots. 17s are required with them.
Applications:
05-09 Legacy GT
10+ LGT?
14+ Outback/Legacy (5x114.3)
Tribeca (5x114.3 bolt pattern)
2015+ WRX (5x114.3)

Rear Brakes

I'm going to divide rear brake into two categores, what I call "old" and "new." The old brakes are on things like the 93-07 impreza and 90-09 Legacy. Brakes changed to the "new" style with the 2008 Impreza and 2010 Legacy. Old and new stuff will not interchange because the offset between the rotor hat and caliper changed. In some cases (like the STI), Subaru kept using the same rotor dimensions, but you can't, for example, stick a 2010 sti rear rotor on a 2005.

Old rotors:

266x10mm
The most common Subaru rear rotor on older cars. It uses a single piston sliding caliper, of which there are a few variations. Early Legacy sedans (non-turbo) and Imprezas have a smaller piston than Legacy wagons and turbos, and there are a few bracket/caliper revisions.
Applications:
90-99 Legacies/Outbacks with rear discs non-turbo
93-07 Imprezas with rear discs (except sti, 06-07 wrx)
98-08 Foresters with rear discs

274x10mm (old)
There are two versions of this rotor. One old, one new. The onld version went on 05-09 Legacy/Outbacks, with a 170mm parking brake. The exception is the LGT and 3.0R, which got 290x18mm vented rotors.
Applications:
05-09 Legacy/outback non gt (170mm brake, old style)
2012+ Impreza non-turbo
2014+ Forester 2.5i

290x10mm
This is well known as the H6 rear rotor. The Legacy caliper is the same as most other 99-07 1-pot Subaru calipers so you can upsize to this rotor simply by purchasing the brackets and correct pads.
The "H6" bracket is part number 26625AE000. It uses pad shape D770
Applications:
00-04 Legacy/Outback non-brighton
SVX (5x114.3, 190mm parking brake)
Ver5 STI type-RA (5x100, 190mm parking brake)

266x18mm
This is the Legacy turbo rear rotor. The caliper is similar to the other calipers but is wider to accomodate the vented rotors. I hear it was also found on the v1 WRX (93-94).
Applications
91-94 Legacy turbo

290x18mm (170mm parking brake)
290x18mm (190mm parking brake)
290x18mm (2010+ Legacy GT, BRZ)
There are actually three different rotors in this size, and they are available for new and old cars. The first is the standard 06-07 WRX and 05-09 LGT rotor. It uses either a 2-piston opposed caliper or a 1-pot slider. The 2-pot will not bolt up to other Subarus without something like the Kartboy brackets or having a new backing plate pressed onto the spindle. The next version is for the STi 190mm parking brake so that 2-pots can be used on rally cars. See below for more info on the "new" version.
Applications:
05-09 Legacy GT (1-pot, 170mm park brake)
06-07 WRX (2-pot)
04-07 STi with FHI 2-pot conversion
2010+ Legacy GT
BRZ/FT86/FR-S
Some older non-us spec-b Legacys and wrx/sti models (see rear brake redux)

Note: The LGT uses a different brake line than older Legacies and Imprezas. So I think you need to grind down part of the caliper where the line mounts to get it to work on an Impreza. The LGT lines are a different shape and mount and a different angle and you can't use them.
...
Installing rear Subaru 2-pots or Brembos on a non 2-pot car:

The Subaru and Brembos have the same backing plate, which is different from all the other Subaru rear disc backing plates. So calipers don't swap between the two. ...

Here is the rear brake redux, which has more information about the older rear brakes that came on STis and fancy Legacys in Japan.

Some D-plate numbers

I should note that the caliper bracket, and not the caliper, is what determines pad shape. So while there are a few different pads, in some cases the calipers are the same.

Front 1-pots

D470:
1990-1995 Legacy
1993-1996 Impreza

D722:
1996-1999 Legacy
1997-2001 Impreza

Front 2-pots

D563:
1991-1994 Legacy Turbo
1996 Outback
1996 Legacy GT

D721:
1997-2002 Legacy
1998-2001 Impreza RS
2002 Impreza and WRX
1998-2002 Forester

D929/D1539:
2002-2009 Legacy/Outback (non-gt)
2003+ Impreza/Forester
8/2002-2005 WRX
2008-2014 WRX
BRZ/FRS/GT86

I added a new shape, 1539. It is listed specifically for the 11+ but the basic shape is still the same. Difference is that the new pad has more friction material on it and slightly different wear indicators.

See this article for clarification on 02-03 shapes (No info at this link any longer, but there is some good discussion here: WRX brake pad differences)

D1078:
2005-2009 Legacy GT
Tribeca
2015 WRX

Rear 1-pots

D471:
1990-1999 Legacy
1993-1998 Impreza
1993-1997 SVX

D770:
2000-2004 Legacy
2005-2009 Legacy GT
1999-2002 Impreza

D1004:
11/2002-2005 WRX
2003-2007 Impreza

D1114:
2005+ Legacy 2.5i/Outback (incl 2010+)
2008-2011 Impreza
2008+ WRX (includes 2015)
2009+ Forester
non-vented FRS/BRZ/86 rear brakes

D1124:
2010+ Legacy GT
FRS/BRZ/GT86

FHI 4/2-pots
Front: D647 (or D1170, D460, D1182)
Rear: D461

STi Brembos
Front: D1001
Rear: D961

2018 STi brembos
Front: D1365
rear: not yet available
note: these are the same pads found on some Lexus and AMG models so aftermarket stuff is already available. It was first thought that the rear pads were shape 1366, which existed, but closer comparison seems to indicate that is not the case.
Quote:
Originally Posted by rawritskyle View Post
so I have a 97 lgt, was looking to grab a power stop kit for it but they only make the front. so... here I am
can anyone help me through all this info... I don't want to lose my parking brake by upgrading to the wrong wrx or leg setup
Quote:
Originally Posted by jamal View Post
I don't know what a power stop kit is, but I have WRX front brakes and Legacy "H6" rear brakes on my LGT. No change in bias, no issues with parking brake, and same caliper pistons sizes but bigger rotors all around. Fits under the stock wheels and works really well as an upgrade.

To do that you need front caliper brackets from a 02 wrx and calipers and brackets from an 00-04 legacy or 99-07 impreza. Then the appropriate pads and rotors.
Quote:
Originally Posted by rawritskyle View Post
to someone who is out of the loop, that info is pretty baffling. I will be looking to buy a new set of everything and tossing my current brakes. I don't know if my rotors are toast and keep warping, or if my calipers are hanging up and need to be revamped somehow, but for the effort involved in assessing that for me, I want to have front and rear rotors, pads, and calipers and just just slap on the new stuff.

ps power stop is just a brand of aftermarket braking components. hopefully it's ok to post a link... this is the kit I had mentioned.
https://www.carid.com/powerstop/1-cl...-calipers.html
Quote:
Originally Posted by nemos_black_wrx View Post
SO it talked about rotors. but what about calipers. my question is what Calipers would give more bite and stopping force on my 2012 impreza 2.0 I. what calipers do I have ? a 2/1 set up. would steel lines, and some good amsol dot 4 fluid help. I autocross and right now the front wants to slightly dive, pedal is squishy, and I get some vibrations if i stay in a high gear and left foot brake ? what does the vibrations mean caliper sticking or warped rotors ?
Quote:
Originally Posted by not12listen View Post
to get an unbias/technical breakdown of brake setup, i'd start here:
The Thing About Brakes Is THIS -- /ENGINEERED - YouTube

one of the key take away items:
brake pads are more important than the number of pistons within the calipers.

brake balance is barely thought of by most people. most people get as aggressive/powerful front brakes with virtually no thought to the rear brakes.

the setup i've gone with is:
EBC Yellow front pads
Hawk DTC-30 rear pads

the DTC-30 are super aggressive. the Yellows are NOT as aggressive. this causes a slightly more rearward balance. i get less nose dive than a 'stock' setup or a 'same pads front and rear' setup.

AMSOil makes a good brake fluid, but i run the Wilwood EXP600 fluid as it has better wet/dry boiling temps.
Quote:
Originally Posted by silverbullet55 View Post
Ok, so for the life of me I cant determine the difference in the rear 1 pot calipers between 02-03 and 04-07 WRX calipers. I know there is a difference in the rear 2 pots, but whats soo different in the standard 1 pot caliper? Anyone?
Quote:
Originally Posted by jamal View Post
The bracket and pad shape are different. The caliper itself is the same and will work on either bracket.

Not the same up front, where the 02/early-03 and 04+ are made by different manufacturers.

I've been studying this thread for a week or more and it has sent me off in all sorts of awesome brake learning tangents. I'm glad to see the thread has turned towards calipers, because that is what I want to talk about. I think that a post that directly identifies and compares the different Subaru calipers would be helpful. This isn't that post, but maybe it's a start towards such a goal.

Anyway, here is my experience.

At the end of 2010 I picked up a bone-stock 1998 Legacy GT Wagon that needed work, including brakes. I was new to Subaru but learned enough from forums like this one that I decided to do the WRX Front / H6 Rear brake upgrade as soon as I got the engine running again. The car had been sitting for a couple years and had a seized front caliper. Since I needed to change from '95-'99 Legacy rear calipers (the older 1-bolt/1-slider asymmetrical style that will not fit on H6 Brackets), it seemed to make sense at the time to replace all four corners with newly-purchased remanufactured calipers to go along with the nice new EBC performance rotors and stainless brake lines:
http://legacygt.com/forums/showthrea...-154702p5.html

During installation I discovered that the '00-'04 H6 rear caliper has a notch for the hard part of the brake line fitting that does not line up with the '95-'99 Legacy brake line orientation. I bolted the line to the caliper but by bypassing the notch, it has always been in the back of my mind that the line could potentially work itself loose over time.

Once completed, the braking performance was plenty good enough for a daily driver, but shortly after I got the car back on the road I came across some information that made me doubt the reliability of cheap remanufactured calipers. Here is a video covering the issues with remans... Disclaimer: it is a sales video posted by a Seattle-area repair shop but I have no affiliation with their establishment:

I also foolishly assumed that the grey "paint" that came on the remanufactured calipers would keep them looking nice for years to come, but in actuality I should have painted them myself because the cheap coating appeared rusty within a few weeks. As far as the reliability of the remanufactured calipers has been... well, a couple years after the car had been back on the road, one of the rear calipers seized, but I was able to change it out easily enough with a warranty replacement. So far the other calipers have held up okay, but another minor issue that I have with the reman calipers is that I can hear what sounds like the pads dragging ever-so-slightly on the rotors with no brake applied while traveling with the windows down. This is most likely due to the inability of the caliper to fully retract, which if I understand correctly is contributed to by flimsy aftermarket rubber boots over the slide pins. In any event, this has surely contributed to increased pad wear and that brings me up to today, as it is time to redo my brakes.

Using what I've learned from personal experience, and what I've learned from brake reference threads like this one, I have decided that I want to replace most of my braking components. I want to stick with the WRX Front 2-piston sliding caliper / H6 Rear 1-piston sliding caliper setup, but I want to remove the remanned calipers and return to factory OEM calipers that have never been to a mass remanufacturing facility. I want to disassemble, clean, paint, and rebuild them myself with Genuine Subaru seals. Big Brake Kits, Brembo, and Fuji Heavy Industries 4-pot/2-pot setups are out of the question due to expense and because of my winter wheels that won't clear (stock Subaru 16x6.5 Snowflakes).

Front WRX calipers changed mid 2003, and from my research it appears that the Legacy GT and Outback also got this revised caliper. It is my understanding that the newer design remained in use for many years and has a larger selection of pads to choose from.

2005-2009 Legacy GT with 11.4" / 290x18mm vented rear rotors setup was an option I was investigating but is undoubtedly overkill for my application. I believe this rear setup might clear my stock 16x6.5 Snowflakes, but probably not my stock space-saver spare tire.

I do want to change the type of rear caliper from Legacy-style to Impreza-style on the H6 bracket in order to properly route my brake lines and get my peace of mind back that the fittings won't work loose over time. I've had to study to understand which models/years would have the correct rear caliper that solves this issue. I was sidetracked by discussion of a change of rear WRX caliper and pad type between Model Year 2003 and 2004. One of Jamal's quotes above explains that the caliper bracket and thus pad type did indeed change for mid-'03+, but that the caliper main housing itself did not. Thus the options are more common and more recent that I thought at first.

The past week I've rounded up a boatload of used OEM 2-pot/1-pot calipers to compare. I've got older 2-pots from an '01 Outback, which use pad style D721 and are the same as '02 WRX. This is the same style as the remans on my car now. I also picked up revised 2-pots from an '07 Impreza Wagon, which use pad style D929 and are the same 2-pot sliders as mid-'03 WRX, but their original brackets won't clear 11.4" / 294mm rotors. So I separately picked up a pair of '07 Forester caliper brackets, which I believe also used the same 2-pot sliders and 11.4" rotors as mid-'03+ WRX.

For the rears I got a pair of '01 Outback rear calipers (with the brake line notch in the wrong orientation) and their H6 brackets. The '07 Impreza rear calipers will have the proper brake line notch, and will be paired with the Outback brackets.

All the parts that I will be reusing I'll disassemble, soda blast, paint, and reassemble with genuine Subaru rebuild kits before installing.
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Old 05-10-2018, 09:03 PM   #399
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Well, silly me.

I thought I had done my research. I assumed there were "pre-2003" dual-piston front calipers, and "post-2003" dual piston front calipers... same size pistons, just a different shape housing, bracket, and pad. It seemed to me that the 03+ caliper was the way to go... I figured I'd make my car essentially have the exact same brake setup as a 2004 Legacy GT.

I found someone locally parting out a 2007 Impreza Wagon. Perfect! Right? So I bought all four calipers for $100, to clean, paint and rebuild with all new seals. I've had the calipers for a week, and I finally realized that these pistons are not 1.685"/42.8mm. They are obviously larger (Pre-2003 caliper with Outback bracket on left, Post-2007 Impreza caliper on right):


Not sure what to make of this as I kept reading that "You can put any Subaru brakes on any other Subaru". I was not expecting a change in piston size and I think this has something to do with a change beginning with Model Year 2007 Subaru vehicles. I don't think this particular caliper swap is a good idea because the change in piston size will almost certainly change my brake bias in an undesirable fashion. The rear caliper pistons appear to be the same size as earlier versions.
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Old 05-11-2018, 01:25 AM   #400
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Quote:
Originally Posted by camroncamera View Post
"You can put any Subaru brakes on any other Subaru".
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