| Blown353 |
10-03-2005 12:19 PM |
Let me throw this into the mix... the new C6 Z06 calipers apparently bolt onto C5 spindles, so anyone who has done a C5 conversion (or has purchased spindles/brakes that use the C5 PBR calipers) can use the new 6-piston C6 Z06 calipers. Cost at the dealer is apparently just under $300/each for the Z06 calipers. That's a heck of a deal in my opinion. You can also pick up the 4-piston Brembo calipers used on the Caddy CTS-V for about $175/each, again a heck of a deal in my opinion. Just have to fab your own mounting bracket.
As mentioned though, with fixed calipers pad knock-back can become a concern, especially with very hard usage or R-compound tires or if the stock spindle is simply too flimsy. It can be very unnerving diving into a turn and have the brake pedal hit the floor. For an example, a friend of mine has a 2004 Subaru STI that experiences this issue under very hard driving and it is VERY unsettling the first time or if you forget to pump the brakes before *really* needing them; part of the fix for the 2005 cars was a revised/larger wheel bearing pack that reduces flex and therefore pad knockback; I have an 05 and don't have the problems that his 04 has. A floating caliper will be better in this regard, but a floating caliper will give up stiffness and "feel" compared to a good fixed caliper. Again, it's a bunch of tradeoffs and design choices you have to weigh.
I've had very good luck with my Baer Track system so far (old style PBR's) under street and hard backroad driving, but I can't comment on their trackworthiness. My hunch is they'll show their limitations under prolonged use. About as much abuse as my brakes have seen is 4 hard stops from 160 down to 35 or so over the span of 2 minutes. They still worked very well, even on the last stop, however I didn't continue to beat on them for another 10-15 minutes as I would in a typical track session. A friend baked the seals on the PBR's on his '69 Camaro after a track session at Thunderhill, but that's mostly because he didn't take a cool down lap and parked the car; the heat-soaked rotors just melted the poor seals away once the airflow stopped. That's more of "operator error" though rather than poor quality brakes. Oops.
Troy
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