Quote:
Originally Posted by 911st
..I have been hearing the SP911 guys are leaving the 930 set up behind for C2 front and 3.2 rear calipers both on 24mm rotors for the lower weight. There reported ballance has been very good without and adjustable system.
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That is a fine setup as far as bias goes but you are not gaining much performance, it is simple to do, any***** can hog out the mounting holes and voila, instsnt BBK, but as I sais you haven't gained much, yes you have more pad area, but that does not lower pad or rotor temps, it does reduce the unit pressure on the pads and rotors but that isn't a problem.
The problem w/ stock 3.2 Carrera brakes is
1) bias, to fix this just install pre '84 M rear calipers and 20mm rotors
2) heat, the under sized front rotors get a real workout in track use, to fix cool the brakes + high temp pad & fluid + lighten the car or use 930 front rotors w/ whatever caliper floats your boat + high temp pads + brake cooling + high temp fluid
Quote:
Originally Posted by 911st
I was more after lower front pad temps that I hoped would come with larger pad surface area. My hope was if the front pad area was say 50% larger, that might make for lower peak temps at the pad material at the end of a big straight.
I do not seem to have a problem with total heat, kind of felt more like peak heat under a big stop at the end of a big straight.
Thanks again.
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bigger pads do not reduce pad or rotor temps
If I owned & tracked a 3.2 Carrera w/ 15 or 16" Fuchs i'd either budget $3-4k for a 930 setup or cool the fronts w/ large diameter ducts & scoops(you can not use enough cooling), use high temp pads & fluid, lighten the car as much as possible.
I'm torn about the rear calipers, it's great to get as much braking from the back as possible but the 3.2s have a bit too much, a really effective lsd would help a lot as does a lower stiffer suspension, before switching the rear calipers out i'd try an adjustable p/v and these things