"Big Red" Rotor replacement
07-21-2008, 12:30 PM
#1
Rennlist Member
Thread Starter
"Big Red" Rotor replacement
I have big reds on my car and its time to do a brake job. They are off a 993tt correct? I want to make sure I am buying the right parts! Thanks guys.
07-21-2008, 02:03 PM
#2
Rennlist Member
From 944s2.com
"ROTORS: Three factory front rotor options are available for big red or big black calipers:
928 GTS — 1-piece, "non-drilled," same offset as '87 and on 944 Turbo or 944 S2.
911 C2 3.6 Turbo — 1-piece, "drilled," same offset as '87 and on 944 Turbo or 944 S2.
993 Twin Turbo (TT) — 2-piece (separate rotor and mounting hat), "drilled," 5 mm less offset than above options. Not for use on cars originally equipped with S4 calipers (M030 option) unless custom alloy hats are used.
All of the above rotors have a diameter of 322 mm (12.68 in) and a thickness of 32 mm (1.26 in). The 928 GTS rotors are reasonably priced and work well on the street, but are not as "sexy looking" as the drilled rotor options. The 3.6 Turbo rotors are similar to the GTS rotors but have cast-in ventilation holes made by a special process, as do the 993TT rotors.
I originally chose the C2 3.6 Turbo rotors because I wanted the look and added cooling the "drilled" rotors provided but didn't want the extra expense of fitting the 993TT rotors and custom hats. I've now changed to the 993TT rotors and custom alloy hats. This saves a bit of unsprung weight, but my "calibrated arm" says it isn't anywhere close to the 4 lbs per side most vendors claim."
"ROTORS: Three factory front rotor options are available for big red or big black calipers:
928 GTS — 1-piece, "non-drilled," same offset as '87 and on 944 Turbo or 944 S2.
911 C2 3.6 Turbo — 1-piece, "drilled," same offset as '87 and on 944 Turbo or 944 S2.
993 Twin Turbo (TT) — 2-piece (separate rotor and mounting hat), "drilled," 5 mm less offset than above options. Not for use on cars originally equipped with S4 calipers (M030 option) unless custom alloy hats are used.
All of the above rotors have a diameter of 322 mm (12.68 in) and a thickness of 32 mm (1.26 in). The 928 GTS rotors are reasonably priced and work well on the street, but are not as "sexy looking" as the drilled rotor options. The 3.6 Turbo rotors are similar to the GTS rotors but have cast-in ventilation holes made by a special process, as do the 993TT rotors.
I originally chose the C2 3.6 Turbo rotors because I wanted the look and added cooling the "drilled" rotors provided but didn't want the extra expense of fitting the 993TT rotors and custom hats. I've now changed to the 993TT rotors and custom alloy hats. This saves a bit of unsprung weight, but my "calibrated arm" says it isn't anywhere close to the 4 lbs per side most vendors claim."
07-26-2008, 04:30 AM
#5
Rennlist Junkie Forever
If you have the M030 steering knuckles, then you don't have caliper adapters, and you would use a 965 front rotor which is cross drilled or the 928GTS front rotor with is the same but not cross drilled.
If you don't have the M030 steering knuckles, then you have caliper adapters to adapt the big red calipers. And if you do, then you probably use the standard 993TT front rotor which is typically what big red aftermarket kits use.
TonyG
If you don't have the M030 steering knuckles, then you have caliper adapters to adapt the big red calipers. And if you do, then you probably use the standard 993TT front rotor which is typically what big red aftermarket kits use.
TonyG