danswofford

Do the rear brake ducts on a C5Z work? Without a scoop on the outside it does not seem like much airflow would enter the duct. Then the duct just dumps lamely into the wheel well.

Does anyone fabricate and install a good duct system with spindle plates like the fronts?

63Corvette

OK I'll let the T1 guys answer this one, but looking at the photos of heavy braking on the net, I would say that REAR brake cooling is NOT a major issue on the Z06 Corvette..........Comment?

John Shiels

It is easier to runs ducts and tubes to the rear as the wheel doesn't turn. You can pick up air under the car somewhere with a NACA duct if you want. They rears are not going to get as hot.

AU N EGL

those ducts are an aerodynamic hinderance. The rear brakes dont get heated as much as the fronts.

John Shiels

I put a LGM/SL-4 caliper in the back and a 13" front rotor. If you are using it as track olny that is another option. Should last a long time in the rear with the same thick Wilwood pad as the front.

wtknght1

The rear ducts are functional. But, as stated, the rear doesn't do that much work so they don't get that hot to begin with. You'd most likely be wasting your time fooling with further ducting back there. Concentrate your efforts on the front, which will pay off.

TRACKMAN2

i agree that the rears dont do much, but i am amazed how much they do-do (?) . coming from the superbike camp i raced as much as i could for 3 years and never touched my back brake. but was shocked how the pads wore on my c4 lots of wear just slightly less than my fronts. agreed the was no discoloration like on the fronts, but they must of been doing somthing to wear like that..

danswofford

I melted the dust boots on my rears. So they get hot. I'm just wondering why we don't make the brake duct go right to the rotor like we do with the fronts. And if I do that it seems like I should make a little scoop at the rocker opening to divert some air into the duct.

I'm thinking the way it is air might actually be sucked out of the brake duct. The air rushing by the duct opening would create a low pressure area.

varkwso

It may not be scientific, completely, but...

I am running a 99 FRC and a ZO6 at the same tracks at the same time and the rear brakes on the FRC are hotter after a session (no AH on either car on). The pads are currently different (ZO6 on FRC and XP8s on the ZO6) and the bias is still as set from the factory as far as I can tell. The FRC does have the DRM ducts in the front - which should have little impact on the heat in the rears as compared to the ZO6 rears...

It is enough for me to "consider"the ZO6 ducts on the FRC when I get some bodywork done on the car in the future.....and NASA charges zero points for brake ducting....