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Old 06-25-2002, 12:33 PM   #1
maciek
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Default brake dilema

I have purchased all of the OEM WRX brake components except the rear rotors.
Do you guys or gals know if the front or rear rotors on my 98 Legacy L are the same as WRX rear rotors?

-or-

Will the WRX rear calipers work on my stock Legacy L rear rotors if they are different size?
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Old 06-25-2002, 12:38 PM   #2
AGscooby
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Not sure about the rears, but the Legacy front rotors will be smaller than the WRX OE. You'll need the caliper brackets from the WRX to accept the larger rotors.

I'm thinking the rear would be the same if you have discs in the back, but the caliper brackets and pads might be different. I'm sure someone will chime in for the rears.

AG
May the B4 be with you!

<edit> I'm sorry... I just re-read your post and realized that the main question was about the rear rotors. Shame on me for not paying more attention. I don't think there are any instances where front rotors can be used as rear rotors due to that parking brake back there.
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Old 06-25-2002, 03:33 PM   #3
Legacy777
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You need to check on your legacy whether the front calipers are single or dual piston. regardless you will most likely need new front rotors.

As for the rear, they are probably different.....however i can double check when I get home to see what the sizing is for the rear WRX rotors & caliper setup. Then all you have to do is figure out what you have for your current model legacy.

The L model is going to have all disc, however they're not goin to have the best setup.

I'll let ya know what I find out when I get home.
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Old 06-25-2002, 05:07 PM   #4
maciek
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how can you tell if the caliper is single or dual piston?
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Old 06-25-2002, 05:19 PM   #5
ciper
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Look at it? I cant tell if your being sarcastic or not, kinda like asking how high does the speedometer go.

Single piston will have one cylinder shaped area and dual piston will have two cylinder shaped area.
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Old 06-25-2002, 05:44 PM   #6
Legacy777
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Ok, here's the info on the rear rotors.

The WRX rear rotors are going to be the same, or "SHOULD" be the same as your rear rotors. The WRX rear rotors are 10.47" in diameter. Which are the same size as mine, which is a 1990.

If my assumption is correct, there are only three disc brake options for the rear over the past 12 years. Solid rotor 10.47" dia, Vented turbo legacy rotor 10.47" dia, and the new VDC & Bean I believe have a solid rotor 11.4" dia.

I sorta doubt they changed stuff in the rear.....but then again I could be wrong.....

Not sure if that is the info you are looking for.....if the rears stayed the same.....there is no reason to swap to the WRX rear brakes.

As for the single or dual piston caliper. If you have alloy wheels or wheels that allow you too look at the caliper you can tell if it has two pistons or one.

If the caliper has a single hole in the middle with two finger looking things on the side it is a single piston caliper.....

Like this


If it has two holes and three fingers, it is a twin piston caliper.

Like this


Josh
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Old 06-26-2002, 12:14 PM   #7
maciek
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Default

ciper - I wasn't being sarcastic, just wated to know how to tell the difference while the caliper is still mounted (hard to see the pistons from the extrior) plus I'm a novice w/ brakes.

Josh - thanks for the info, I think I'm just going to upgrade the front.

In the close up picture, is the large c-shaped piece w/ mounting holes the bracket?

-just trying to get my terminology correct
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Old 06-26-2002, 01:47 PM   #8
AGscooby
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Quote:
Originally posted by maciek
In the close up picture, is the large c-shaped piece w/ mounting holes the bracket?

-just trying to get my terminology correct
Yep, that's the caliper bracket.

AG
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Old 06-26-2002, 02:07 PM   #9
ciper
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Hmm,, I wonder if the older style brakes will bolt to the bracket used for the h6 legacy. If so then all you would need is a new rotor and new bracket!
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Old 06-26-2002, 02:21 PM   #10
AGscooby
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gimme Legacy TPH wagon!

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Quote:
Originally posted by ciper
Hmm,, I wonder if the older style brakes will bolt to the bracket used for the h6 legacy. If so then all you would need is a new rotor and new bracket!
It may be possible since that is a popular, inexpensive upgrade among WRX owners. Of course, there's that dust shield "issue". The Legacy rear shields might be different. I don't know anyone local who has done the H6 rear upgrade so I can't compare the parts. If the calipers are the same though, hmmm...

AG
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Old 06-26-2002, 02:22 PM   #11
AGscooby
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gimme Legacy TPH wagon!

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Oh yeah... say goodbye to any OE 15s you might be running...

AG
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Old 06-26-2002, 02:54 PM   #12
ciper
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Im already using wrx wheels with wrx front brake peices so this isnt a problem.

I actually have a full set of wrx rear brakes available to me. I was going to buy these then use subaru parts to get the rotors and brackets.

If my calipers will fit the brackets then I have no reason to even crack the lines!!!
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Old 06-26-2002, 04:19 PM   #13
maciek
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Is it necessary to replace the dust shields with larger ones when going to a larger rotor?
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Old 06-26-2002, 04:37 PM   #14
ciper
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Only on the rear does the sheild become an issue. And as far as I know there is no way to just replace the dust sheild without tearing the whole thing apart.

I plan just to bend it out of the way with vice grips.

Hehe, someone who works at my office has an h6 3.0 vdc legacy. WOW its impressive. The exhaust is pretty large, it is two seperat pipes that dont come together until the floor board of the rear passengers.
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Old 06-26-2002, 05:57 PM   #15
Legacy777
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Yeah the rear dust shield will be an issue.

The H6 exhaust actually has a variable exhaust system to increase back pressure at low rpms for good low end brunt, but opens up more at higher revs for better performance.
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