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Old 02-03-2004, 04:05 AM   #1
RebelINS
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2000 Impreza 2.5RS
2005 Impreza WRX STi

Default What are my brake options?

The thing I hat the most about my car (Besides it utter lack of power) is the crappy brake feedback I have. It isn't so much the actual performance of my brakes, it's just they feel so spongy. At first I just thought it was because I had rubber lines, so about 2 years ago I swapped for SS lines. Then I thought, maybe I just need to bleed the system, and put new fluid in. So, then after bleeding my brakes on numerous occasions, I have come to the realization that the brake system just has to be replaced. So what brakes should I get? I am kind of on a tight budget, so I think getting brakes from other models is my best option. I was thinking some STi 4-pots (red or black) in the front, with either Outback H6 brakes in the rear, or turbo Legacy brakes in the rear. So what do you guys think? How are the brakes on the stock WRX (it has been a while since I have driven one), would front WRX brakes give me better feedback, with one of the aforementioned setups in the rear? Are there any other Subaru brakes that I haven't thought of? If someone knows another way to stiffen my brake system, while still being legal for STX, I would love to hear that as well.

-Wes
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Old 02-03-2004, 04:31 AM   #2
Kostamojen
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The feedback is the result of the dual stage system. Check the brake forum, theres lots of discussion about it.
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Old 02-03-2004, 05:05 AM   #3
RebelINS
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2005 Impreza WRX STi

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Hmm...I looked all through the forum and couldn't find any info. If I can fix my brakes so they feel good, then I wouldn't do any of the swap options.

-Wes
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Old 02-03-2004, 01:47 PM   #4
stimpy
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Changing calipers, unless you go with a n opposed caliper, isn't going to gain too much. There is some slop there, but it is not the limiting factor at the moment.

You have to change your brake booster to a single diaphragm booster. That should have the most profound effect on the feel aside from stainless lines. Here is a short summary of what is happening. I didn't have to do this since my car is non-abs and came with the single diaphragm

If that is still not enough, then changing to the SVX 1 1/16" master cylinder will finalize the deal. I'm one of the few that has done this and it made a huge difference especially in pushing enough fluid for the larger brakes I was using.

-Jon
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Old 02-03-2004, 03:55 PM   #5
FletchMY98
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RebelINS,

I hear your pain with the vague feel of the stock brakes on the 98-2001 RS's. All of my rotors and one of my calipers were all going bad, so I decided it was time to remedy the situation. Spending upwards of $2k was not an option. I opted to upgrade the front rotors to cross drilled/slotted WRX rotors and upgrade the rears to cross drilled/slotted turbo legacy calipers and rotors and put in a new booster/master cylinder.

Fronts: All that's required is the purchase of a pair of WRX caliper mounting brackets. You can usually pick them up used in the For Sale forum for $25-50. You reuse the stock caliper, the new WRX and older 2.5's share the same caliper. Since my calipers were over 5 years old, I picked up a set of used 03 WRX calipers for ~150.00 with about 5000 miles on them. The WRX rotors are quite a bit larger than the 2.5 rotors. The install takes about 1 hour and is very easy to do.

Rears: You'll be replacing the caliper, mounting bracket and rotors. The rotor diameter will stay the same but you'll get a vented rotor instead of a solid one. I opted for a new kit from the dealer as none of the junk yards around me had any of the above parts. Takes about an hour to install and then time to bleed the system.

Booster/Master Cylinder: This will mearly change the way the brakes feel, not a performance enhancement. You'll swap out the booster and the master cylinder. This is a bit of a PITA to get the old booster out and the new one in. It took me about 2 hours total for the install and bleeding.

Brake Lines: I also installed Goodridge steel braided brake lines all the way around. My stock rubber lines were beginning to look cracked and nasty. This takes about 1.5 hours to complete including bleeding.

I did all the above upgrades one stage at a time with a weeks worth of mixed driving in between. Each change brought about a more desireable and better performing brake system. The booster and master cylinder makes the braking force place on the caliper very linear. The pedal travel is very even and predictable. The larger rotors in the front and vented rotors in the rear really gives stronger and more predictable braking ability. I opted for StopTech rotors and managed to get them pretty cheap from an Ebay auction. All in all I spent about $500.00 for all new rotors, pads, rear calipers, used WRX calipers, booser/master cylinder and braided brake lines. As far as I'm concerned it was money well spent. www.northursalia.com has part numbers & installation instructions for all the above upgrades.

Best Regards,
Chris

Last edited by FletchMY98; 02-03-2004 at 04:38 PM.
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Old 02-03-2004, 04:26 PM   #6
RebelINS
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2005 Impreza WRX STi

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Wow, thanks for all of the info about your brake swap! That sounds like a good plan. My only problem is I don't think I can change my brake MC and stay in STS or STX. So I don't know that changing that is an option. I can do the different caliper setups though.

-Wes
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