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Old 05-07-2006, 12:59 AM   #1
vader wagon
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Default Legacy GT Brake Conversion on WRX

I tried a search but didn't find what I'm looking for. I was hoping someone could steer me in the right direction. I'm looking for information what it takes to do a Legacy GT brake conversion on a WRX. I have an 03 WRX wagon, to be specific.

I'm particularly curious about whether the e-brake parts need to be converted and whether SS lines for the Legacy work on the WRX's hardlines. I'd assume the SS lines aren't the same, but maybe I'm wrong.

Anyway, any help would be appreciated. Thanks!
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Old 05-07-2006, 02:39 PM   #2
BillJC
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For the SS lines use lines intended for the WRX. Also, you will need at least 17 inch wheels to clear. You don't need to do anything to the e-brake since the rear hub is the same size. Everything bolts right up. You will have to modify the backing plate dust shields though. Or, just remove them which is what I did. All in all it took about an hour including time to bleed them. BTW, the pads that come stock, suck. Upgrade the pads from the beginning. I'm using Carbotech Panther Plus pads now. They are a little loud but, the pedal feel is great and I haven't overheated them yet.

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Old 05-07-2006, 02:59 PM   #3
vader wagon
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Default legy brakes

Cool. Just to make sure I got it:
1) Make sure you got 17" rimes (done)
2) The WRX's SS braided lines swap over
3) The e-brake parts swap over
4) Dump the backing plates (or modify 'em--is it obvious what needs to be mod'd?)
5) OE pads suck--up-rate them off the bat

Here's an odd one, I was thinking about up-rating the rotors right away as well--never even running OE Legacy GT rotors. Perhaps something like PowerSlots, or similar. Any reason not to just make that jump at the same time as the conversion?

BillJC, any pictures of your conversion? I'd love to see them, if you got 'em. Were there any websites or tech information you ref'd before doing you conversion?

Thanks for you help!

Last edited by vader wagon; 05-07-2006 at 03:02 PM. Reason: typo
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Old 05-07-2006, 07:21 PM   #4
ten80
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There's no swapping or messing with e-brakes, just change the rotors and install the calipers with brackets. the backing plates com off with some persuasion from a rubber mallet (spot welds break easliy). only reason not to do rotors at the same time is cost and the fact that they are mainly for bling unless you race on the track! You can upgrade pads, might as well do it for the rediculous power!
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Old 05-08-2006, 07:47 AM   #5
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Go find a copy of the latest issue of SubieSport magazine. They do a complete install on a wrx wagon and review the effectiveness of this swap.
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Old 05-08-2006, 10:30 PM   #6
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The stock rotors are fine. A little heavy but they get the job done. I'm trying to source a set of two piece rotors to lighten the setup a little. I just drilled the spotwelds and hit the backing plate with a hammer and they came right off. No need for them if you only drive on the street. I wouldn't spend any money upgrading the rotors in the begining. You won't notice any difference in performance. Just get a set up good pads, such as the Carbotechs and some good fluid, Motul or Castrol GTLMA and you're good to go.

Bill
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Old 05-08-2006, 10:58 PM   #7
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I'm contemplating doing just the rear Legacy GT breaks on my WRX to get rearward bias, but skipping the front upgrade. Any chance you could share the source for the two piece rotors?
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Old 05-08-2006, 11:04 PM   #8
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Quote:
Originally Posted by AutoXRex
Go find a copy of the latest issue of SubieSport magazine. They do a complete install on a wrx wagon and review the effectiveness of this swap.
Cool. I get mine at a local magazine store and I haven't wandered down there yet this month. Now I've got a reason I gotta go!

I was also curious about just a rear conversion, but it seems like the bias would be too rearward. I dunno.
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Old 05-09-2006, 12:09 AM   #9
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I was going to piece together a setup from Coleman but, I was just informed that DBA has a kit as well. I'm going to look into that as well. It's easier to buy a ready kit than to try and piece it together myself.
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Old 05-09-2006, 12:51 AM   #10
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Quote:
Originally Posted by vader wagon
I was also curious about just a rear conversion, but it seems like the bias would be too rearward. I dunno.
The diameter is the same as an H6 upgrade, and uses the same pad. The only difference is the additional width for the vented rotor. The H6 upgrade is a very well thought off improvement in terms of bias, so I figured this would be a good jump as well. I'd love to see a solid comparison between the legacy GT upgrade, the 4pot/2pot combo, OEM Brembos, and some after market kits. I'd like to go best bang/buck and those really run the range of prices.
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Old 05-09-2006, 01:39 AM   #11
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Hmmm... that's interesting. I can't wait to see the new SubieSport, I hope they've got some info in it like that. I certainly wouldn't mind doing the rear, then the front down the road.
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Old 05-09-2006, 08:09 AM   #12
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Sale on the legacy break kit:

https://www.subarugenuineparts.com/i...sort=1a&page=3

I really believe this is the way to go if you are on a budget or want OE quality / reliability.
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Old 05-09-2006, 11:20 AM   #13
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I've done just the rears (w/ Legacy B4 rears seriously 2 months before someone discovered the LGT conversion would work, haha), but the rear bias shift is only 2% with the 10% increase in rear brake torque. Bias goes even more rearward with 4-pots on the front, like how the JDM WRX NB comes from the factory.

I would suggest using a 3/8th-inch drill bit to drill out the spot welds before popping the dust shield off with a hammer, makes the job much quicker and easier. Just hit each weld for 10 seconds and you're good to go. Like butter.



Ben
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Old 05-25-2006, 12:10 PM   #14
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So, do you reuse the stock WRX caliper brakets?
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Old 05-25-2006, 12:15 PM   #15
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I would say no to the reuse of the brackets due to the larger size rotors
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Old 05-25-2006, 12:54 PM   #16
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Then how are they fitting on? The LGT brake kits don't include them.
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Old 05-25-2006, 02:15 PM   #17
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are you sure they don't include the calipers and the brackets or just the brackets and reuse the calipers, hell let me search a bit, but generally brackets are matched to disk diameter
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Old 05-25-2006, 05:58 PM   #18
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I have searched many threads about the LGT brake upgrade, but not of them mention brackets. I hope someone who has done the swap will chime in.
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Old 05-25-2006, 06:45 PM   #19
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I haven't seen a need for the brackets yet... haven't done an install yet either. One more car payment and I own my WRX, finally. I'll be doing the conversion soon, at least on the rear. Hopefully someone will post been-there-done-that info before then! :^D
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Old 05-26-2006, 02:17 PM   #20
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that is an extremely interesting question, my search has lead to no mention of the brackets, bit similar style oem upgrades on both hondas and nissans that I have done required the use of brackets that matched the rotors diameter so I too hope someone will chime in
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Old 05-26-2006, 09:48 PM   #21
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Quote:
Originally Posted by LastResort
The diameter is the same as an H6 upgrade, and uses the same pad. The only difference is the additional width for the vented rotor. The H6 upgrade is a very well thought off improvement in terms of bias, so I figured this would be a good jump as well. I'd love to see a solid comparison between the legacy GT upgrade, the 4pot/2pot combo, OEM Brembos, and some after market kits. I'd like to go best bang/buck and those really run the range of prices.
Are the calipers different from these legacy gt brakes to H6's? I have H6's and would love to get a different looking caliper to match my BBK look.
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Old 05-27-2006, 12:58 AM   #22
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Quote:
Originally Posted by keaniegenie
Are the calipers different from these legacy gt brakes to H6's? I have H6's and would love to get a different looking caliper to match my BBK look.
I've never seen a pair in life or compared the photos that are in other threads, but my guess the legacy GT rear caliper looks almost exactly like the current calipers on the WRX, just "fatter" depth wise.
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