Brake confusion: Do 996 (and Boxster S) calipers fit on our cars with RS2 brackets? Apparently they
11-02-2008, 06:44 AM
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Brake confusion: Do 996 (and Boxster S) calipers fit on our cars with RS2 brackets? Apparently they
fit on CQs, at least according to the tech article linked below. I had not heard of this working for a C4 UrS car before.<ul><li><a href="https://www.audiworld.com/tech/misc42.shtml">https://www.audiworld.com/tech/misc42.shtml</a</li></ul>
11-02-2008, 07:55 AM
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If it's true that the RS2 brackets work then wouldn't it all be dependent on the hub?
If it is the same off set as ours, I imagine it would work. I know there are a bunch of different 5x112 hubs. I know some hubs from a 100 do not fit our cars. I would think the S2 hubs would be the same, no?
11-02-2008, 08:01 AM
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No idea. The DIY was for a CQ not even an S2. I am sure there is a reason why BIRA came up with
their System 3 brackets (i.e. the RS2 brackets didn't work) but I really don't know. I have emailed Brendan Rudack at Apikol with the question because they have a couple of versions of the RS2 bracket (normal and adjusted) for 993tt calipers.<ul><li><a href="https://www.apikol.com/#Products,Brakes,55">https://www.apikol.com/#Products,Brakes,55</a</li></ul>
11-02-2008, 08:01 AM
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they do fit but there are slight alignment and width discrepancies... Need to add spacers
in order to center the caliper on a 323x22mm rotor.
And secondly, the 22mm rotor is technically too thick for that caliper, so you have to shave down the pad guides as well we (Keeg & I) had to sand/grind down a bunch of the pad material in order to load them into the caliper. It ended up being a very tight fit.
a smaller & thinner disc (like the 314x??mm) would probably be more suited to that caliper.
And secondly, the 22mm rotor is technically too thick for that caliper, so you have to shave down the pad guides as well we (Keeg & I) had to sand/grind down a bunch of the pad material in order to load them into the caliper. It ended up being a very tight fit.
a smaller & thinner disc (like the 314x??mm) would probably be more suited to that caliper.
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11-02-2008, 08:48 AM
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I had Front & Rear boxsterS calipers, & when I first got the S4 I used RS2 brackets + A8
rotors and put the front calipers on the Ur (then did the crazy Leavenworth cruise). Just within the last year I sold those front calipers but have kept the rear BoxsterS because I am fitting them as a rear big brake kit for my 90. I also have a pair of 996 C2 (black) rear calipers that I'm not sure what I'm doing with yet, but they were cheap so I bought them.
11-02-2008, 08:53 AM
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i got 22mm on the brain b/c that's the width of the S4 rear discs I'm using on my 90
300x22mm, to compliment my BoxsterS rear calipers.
<img src="http://members.shaw.ca/r_turner/audi/B7_S4_4topview.jpg">
and
<img src="http://members.shaw.ca/r_turner/audi/B490_Boxster_rear_brakes.jpg">
the "old" rotor underneath the caliper was my original option... D2 S8 rear rotor @ 280x20. Kinda small considering the caliper is designed for 299x24mm. But back then the B7 hadn't been released yet so I didn't have the choice of a 300x22mm disc; now that I do that's what I'm going to use.
<img src="http://members.shaw.ca/r_turner/audi/B7_S4_4topview.jpg">
and
<img src="http://members.shaw.ca/r_turner/audi/B490_Boxster_rear_brakes.jpg">
the "old" rotor underneath the caliper was my original option... D2 S8 rear rotor @ 280x20. Kinda small considering the caliper is designed for 299x24mm. But back then the B7 hadn't been released yet so I didn't have the choice of a 300x22mm disc; now that I do that's what I'm going to use.