911 Carrera/SC brake calipers Options

[914junkie]

84-88 Carrera rotors are 24mm and 78-83 SC rotors are 21mm wide so does that mean you can use the Carrera calipers on the SC rotors but not SC calipers on Carrera rotors??? Paul S. (IMG:style_emoticons/default/unsure.gif)

[Eric_Shea]

I would use the correct rotors with the calipers used. If you used a Carrera caliper with a SC rotor the difference in the rotor thickness has to be made up somewhere. You couldn't get thicker brake pads. It might work at first as the pistons would come out to make up the 3mm difference, ( 1 1/2 per side) but I would think as you got to 1/2-1/4 of brake pad left the pistons would leak or maybe come out of the caliper........There's no reason not to use Carrera rotors with Carrera calipers......

I agree (for the most part).

Here's a couple things to ponder:

You can get a thicker pad which would be the S-Caliper pad (AP45T - T = Thicker 19mm vs. 14.5) but why... (IMG:style_emoticons/default/confused24.gif)

24mm rotors are heavier than 20mm rotors. When the same (basic) caliper has the same pad surface area and the same piston size; why would you want to add weight in the absolute worse place to add it -- Rotating Mass?

I've never heard of "anyone" warping a 20mm vented rotor in a 914... ever. It is more than up to the task so, my recommendation would be to stick with the A-Caliper (SC) vs. the Wide A-Caliper (Carrera) and enjoy the exact same braking power on a lighter rotor. Lighter = Faster (read that somewhere.)