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Brake Conversion Questions
Well my brakes needed to be resurfaced/ changed anyways, so i am finally going to try what i have been meaning to do for the past 2 years now, upgrade all around. my buddy owns a professional machine shop and has slotted rotors on corvettes for almost 10years now, and we are going to do mine...anyways, i have recently gotten a hold of a full set of brake parts, so i am going on with my intentions to do slotted brakes front and rear, however i am putting the second set of front brakes on the rear as well, meaning all 4 corners will brake well now. i have been pondering this for the past two years, the only two questions i have are what should i do for mounting the calipers on the rear? and should the brake booster be able to support this in stock form?
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98 Impreza Wago-O-Doom & Datsun Roadsters |
#2
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Not sure, but I think that it would throw off the braking bias... and that could be very bad.
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-Aaron SVX: '92 Dark Teal 101k '97 Legacy GT Wagon: dead '99 Civic Si: daily driver... stolen and stripped with all my tools! '92 Yamaha FZR 600: garage 2011 Jetta: Daily disappointment |
#3
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um... well its split power at the booster tho... i guess i can test it and see too!
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98 Impreza Wago-O-Doom & Datsun Roadsters |
#4
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No hand brake either. Harvey.
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One Arm Bloke. Tell it like it is! 95 Lsi. Bordeaux Pearl, Aust. RHD.149,000Kls Subaru BBS wheels. 97 Liberty GX Auto sedan. 320,000Kls. 04 Liberty 30R Auto Premium. 92.000kls. |
#5
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If I'm not mistaken Aussie SVXs have vented rear rotors and bigger caliapers. Mabey someone can hook you up with a setup like that
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#6
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Harvey.
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One Arm Bloke. Tell it like it is! 95 Lsi. Bordeaux Pearl, Aust. RHD.149,000Kls Subaru BBS wheels. 97 Liberty GX Auto sedan. 320,000Kls. 04 Liberty 30R Auto Premium. 92.000kls. |
#7
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Danny 1994 Silver SVX in hybernation, awaiting for the monsterous awakening (Lebanon) 1967 Mercedes-Benz 250SL Euro Specs, Hard/Softtop, White/Red. Under Complete Restoration 2013 Mercedes-Benz SL350 Euro Specs, White/Red. Mint... Another step into SL Collection. |
#8
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Actually, I didn't know there was a difference. I hope the race concepts rears that are waiting for me at home will fit! argghh
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'92 JDM (E) Burgandy/Black 100Km Just Crusin' |
#9
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If they are solid I will trade you caliapers
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#10
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I believe the rear vented discs use the same diameter disc, same mounting setup, same parking brake setup, same size piston, just a deeper caliper to accommodate the wider rotor.
As for matching calipers front and rear, you would have to remove the stock proportioning valve and replace it with an adjustable one. Too much rear brake power would throw the back end around when you try to stop. Technically, the ABS will kick in and control it, but it will still be an unstable stop. What I want do when I have spare money is to replace the brakes with a Wilwood Powerlite or similar setup. 4 piston calipers up front and 2 piston in the rears with the parking brake hats. That would be mated to a custom proportioning valve and a larger master cylinder to prevent excessive pedal travel during braking. I believe the stock wheels will hold a 12.19" rotor, but Its been a few years since I looked at the specs to remember for sure. Doug
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1992 LS Touring (6/91) - Currently undergoing a five speed swap Black over Claret with spoiler; 235,000 miles; Mods: 2002 Legacy 5 speed, ACT Pressure Plate, Excedy Clutch, Short Throw Shifter, Aussie Powerchip 1992 LS Touring (6/91) Black over Claret with 2.5" setback spoiler; 202,000 miles; Mods: B&M Cooler 1994 LSi (4/93) Bordeaux Pearl; 198,000 miles; Mods: Weight reduction. 1969 Mustang GT Convertible 1970 Mustang Convertible 2000 Ford Excursion Sola lingua bona est lingua mortua. My Locker |
#11
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The threshold for caliper and bracket space is 13.1 at their current location.
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British vehicles are my last ditch attempt to keep the nasty Italian thoughts in my mind at bay. So far its working. |
#12
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1992 LS Touring (6/91) - Currently undergoing a five speed swap Black over Claret with spoiler; 235,000 miles; Mods: 2002 Legacy 5 speed, ACT Pressure Plate, Excedy Clutch, Short Throw Shifter, Aussie Powerchip 1992 LS Touring (6/91) Black over Claret with 2.5" setback spoiler; 202,000 miles; Mods: B&M Cooler 1994 LSi (4/93) Bordeaux Pearl; 198,000 miles; Mods: Weight reduction. 1969 Mustang GT Convertible 1970 Mustang Convertible 2000 Ford Excursion Sola lingua bona est lingua mortua. My Locker |
#13
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yeah i knew i would be in need of an adjustable proprtioning valve, me and my father are each in need of one, his for the streetrod. intresting thought about the race car tho, as i plan to auto-x this ALOT next season, what are you running for all of your brakes on the race car? did you keep the ABS? Are you running a different proportioning valve?
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98 Impreza Wago-O-Doom & Datsun Roadsters |
#14
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Doug, check out our posting about wheels under the oz set up. It gives the specs needed for tires and what will fit etc.
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British vehicles are my last ditch attempt to keep the nasty Italian thoughts in my mind at bay. So far its working. |
#15
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Curley,
I run a "stock" SVX in autocross (G STOCK class), and I use the stock rotors with AXXIS semi-metalic pads, front and rear. No problems at all, and as BENEBOB says, the SVX stock brakes were excellent when made ('92 thru '97), and even today, the brakes are better than most, especially with the AXXIS pads. For autocross, I would not go to the expense and trouble to change anything but the pads. When I run track events, I do, however, change the rotors to drilled and slotted due to the better heat disipation. Harry
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newsvx 1992 SVX LSL, #1215 1997 SVX LSi, #370 "I live with fear every day. Sometimes she lets me go racing." "Getting Older and Slower" Locker: http://www.subaru-svx.net/photos/user.php?newsvx |
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