QUOTE(BMXerror @ Nov 28 2006, 03:48 PM)
In response to Jeroen's question, it's not BIGGER brakes that I really care about. Cooling is my big concern. I want vented, probably drilled rotors because this thing's gonna be driven HARD. I plan on doing lots of trackdays. Also, I would like 4 piston calipers because I don't really like the feel of the brake on 914. You have to really bury your foot into it to get not very much. I would like it to grab a little bit more. As for spending my hard earned money, well, racing is expesive. I may be nuts for wanting to race on my salary, but I see more brakes as a necessity if I'm going to get some serious power (which I plan to).
Travis, a T and an internally adjustable perportioning valve are going in as soon as possible anyway. I don't really care for the brake balance under hard braking and downshifting. I've locked the rears up a couple times going into a corner which is not a comforting situation.
One more question; I don't know the 911 models from that era too well, so what years are the 964 series. Thanks to both of you for your info. It's been very helpful.
Mark D.
How many drivers will this car have (at the same track event)?
In all honesty, you probably haven't driven a 914 with properly working stock brakes. The stock brakes, in good woring order, are capable of locking up the front wheels at will.
Heat capacity of the stock rotors is not so great, but again, properly functioning brakes with high performance pads will do well.
In my honest opinion, the most you will need would be 911 SC brakes all around (vented rotors and 911 calipers)
We (my dad and I) share a track car and typically drive it back to back with one of us in the instructor group and the other in the most advanced student group. We drive the car HARD and it held up well with 911SC fronts and 914 front calipers in the back for years with no problems.
A couple years ago, we changed the fronts to 930 units, but the main difference is that the pads last longer as they are bigger. The 930 calipers weigh much less, but the rotors weigh much more.
If you don't like the feel of stock brakes, plan on a minimum of a 23mm master cylinder with 4 piston calipers or the pedal travel will be enormous.
We are switching our rear calipers out with 911 SC rears. (The rotors are less expensive and vented).
I still stand with my opinion that you should need no more than 911SC brakes (in all four corners) and then you would need my yet to be released 911 e-brake conversion parts.......