H6 rear brake upgrade

[subysouth]

2002 US WRX rear caliper:

This is again the "newer" caliper/caliper bracket. As you can see the brackets are totally different from the "older" style. The calipers are different too, but the differences are subtler.

subysouth

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[monovich]

OK. I took my brakes to the local Suby performance shop and they aren't worried about fitament at all (fingers crossed). So I've scheduled to have 'em installed the weekend of Oct. 5th.

Here's the thing, we collectively agreed that I could get away with using the rotors and pads that came with 'em, but the best thing to do would be to start fresh. So I want to pick up some DBA rotors to go with 'em but I don't know which ones to get. (anyone wanna buy the old ones? ) I think I do want slotted and drilled because this is both a performance AND asthetic mod and I like how they look and I don't take my car to the track anyway. So how do I determine EXACTLY which rotors to order and who do I order them form? Does the 190mm parking brake issue play into this? I don't think I want the ones with the red anodized aluminum... it's a bit over the top. Please advise.

Also, I need pad reccomendations and a source for those.

Also also also, I need SS line source reccomendations and I need to know wether or not the lines are universal or model-specific.

Hopefully I can gather all of this stuff by Oct. 4th!

thanks for the help!

-Steve

[subysouth]

Did the shop lay out exactly what they are planning on using from the parts you ordered?

With reference to the rotors, if you keep the 190mm parkingbrake you need the DBA 656 rotor. You need the (2)656x specifically for slotted/drilled rotors

The lines I believe are the same fittings as your wagon already has, so get SS lines that would fit your car.

My advice for pads I really like Preformance Friction pads. The calipers you have are similar to Nissan 300z calipers. Source PFC pads for front and rear using Nissan part numbers.

I really would like the details on fitment if you can get them.

subysouth

[monovich]

To be honest I didn't see them when they were looking the stuff over, so I'm taking their word for it that they will fit.

Is there a way I can visually verify which parking brake I have? So far the only reason I have to think it's 190mm is because you've said so, but I have no way to verify that.

lemme know.

-S

[subysouth]

Steve, you just gonna have to trust in me.......

If you can take the rotor off, you could just measure the interior drum. Its either 170 or 190mm.

If you cant take the rotor off, measure the width of the wheel mounting face only(where the five lugs are coming through.) On the 190mm rotor is ~ 157mm wide and on the 170mm hub it is ~139mm wide.

HTH
subysouth

[monovich]

measured the rotor. It's 290mm with a 157mm mounting face. So I guess that makes it the 190mm parking brake.

thanks for the info. Will update more later.

-S

[Peaty]

Just to bring the thread back to life,

I got the parts I need to put the larger Legacy rear rotors on my RS today. Brackets, rotors and pads. I'm gonna try to do the install tomorrow. I've been working funky hours doing a line start up. I may be able to get home 5 hrs before the wife and kids so I can have some quality time with my car

I'll post the how to when I'm done as usual.

I do have one question though. I looked at the pads and only one of the 4 have a wear indicator. All the pads look the same. I thought there would be two one for each side. It looks like it's easy for one to fall off so that's what may have happened. It's jsut sort of clipped on there. Anyone know for sure? My guess is I can take the one off of the pads there.

Peaty

[subysouth]

Every rear pad set I've seen has two pads with wear indicators.

subysouth

BTW My GT-B rear calipers got here today. Do I have them? No #$%&*^, I got a "we tried to deliver them" card. Gonna get em tomorrow at the PO. Yea babee.

[cardin555]

Who did you get your calipers from?

[subysouth]

requested anonymity at this juncture. If he changes his mind I'll let ya know.

Here are some pics:



subysouth

[subysouth]

As you can see I haven't cleaned em up yet.


subysouth

Peaty: three sets of JDM rear pads I have received and only one wear clip per set of pads. Weird. 2 of the 3 were loose in the boxes.

[Peaty]

I just finished doing the H-6 upgrade. Not hard really. I'm moving the pics from the chip now to edit them. The thing that took the longest was removing the dust covers (splash guards?) At first I used a dead hammer to move them back but didn't like the results. I decided to take them off my drilling some at the spot welds. It worked fine. I'll post the link after I get the page done. I'll do it in a separate thread though this one is pretty long.

One question though. I know this is being called the H-6 rear rotor upgrade but the rotors aren't specific to the H-6 are they? How should I describe the upgrade?

Peaty

[subysouth]

USDM 2000+ Legacy Rear Disc Upgrade?

long but appropriate

Can't wait to see the pics. Peaty did you take a detailed pic of the backing plate itself? I got a pic coming to ya of the 2001 GT-B backing plate I got for comparison.

subysouth

[Peaty]

I have some close ups of the backing plate and it's removal yes. Still working on the pics. I have an hour before the family arrives home. It takes longer to edit the pics than do the mods most of the time

[Peaty]

done

http://www.scoobymods.com/forums/sho...=2517#post2517

[west_minist]

Peaty, how does the H6 upgrade works since I it would seem there is nothing to gain since the original pad is being use back and the size rotor use is not fully utilise?

[Kraziken]

Originally Posted by west_minist

Peaty, how does the H6 upgrade works since I it would seem there is nothing to gain since the original pad is being use back and the size rotor use is not fully utilise?

Think of a record player (if you know what those are. )

If you try to stop the record on the inside spindle with your finger, versus pressing the very outside near the edge. The farther out your finger is, the more leverage you have.

I upgraded my front brakes first, but if your going to upgrade I recommend doing it all at once.

I noticed a significant reduction of brake dive when I did the "H6" upgrade.

[west_minist]

I have a low grade wrx.

That means the car came with everything except the turbo.

I have a JDM, so that means that I have full STI adj suspension, wrx front brakes and a EJ20H DOHC AVCS.

You are right. The outer rim spins slower than the inner. The stock is 10.x" while the new ones are 11.4"

But before the change, what setup you had w/ pads?

[Kraziken]

I can't seem to find my original Legacy brochure, but according to cars101 it was a 10.5 inch rear rotor.

When I upgraded the front WRX rotors I went to SS lines and semi-metallic pads. I have SS rear lines but just the stock WRX pads right now. They came with the brakes when I purchased them from the wrecking yard so I decided to give them a try.

[west_minist]

I saw tem on the old ones. But the new legacy for the GT have 11.4 or .5