[quote name='Dave' date='Oct 7 2005, 12:01 PM']Zoran - Can I ask what the applications is? For someone to need MORE than Big Reds with Pagid Blacks = More front brake than I've seen even dedicated racers needing.
The quesiton is quite specific, that's why I ask.
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Dave, Kramermic,
I have a road registered/race car. That is what I call it anyway. It is 30% driven on public roads and 70% on rice track. It still has full interior and it is fitted with full roll cage and harness. It weights around 1320 kg. I purchased the car as original 968 club sport as I thougt that was the closest thing to a full race car, but still road driveble. GT 3s were way to expensive at the time and who needs one anyway, I blow their doors at the track every time.
This is how all started:
1) upgrade to lighter flywheel and clutch(modified 95 mod. 911 rs cs)
2) simons 3 pieces wheals 10inch at the front with 265/35 18 tires and 12 inch at the rear with 295/30/18 tires
3) fully adj. front & rear suspensions
4) turbo motor... 500+ hp (332kw at rear wheals)
5) and finally big reds(twin turbo) at the front with standard rears Mo30 cross drilled with fearly aggressive rice pads
I felt that I should described the car so you can tray to understand way I want to change my brakes set up.
In beginning of all of this about 4 years ago I never wanted more braking performance out of this car, but as I was learning how to take full advantage of power and as I become better driver (I think) I actually started to straggle with stopping it in time.
Here is the example:
If I was to say replace my rotors to new ones (322mm cross drilled from porsche) and put new set of Pagit pads, I will be fine for about 4 to 5 club events/days.At this stage I will experience very impressive stopping power and occasional ABS activations. as the rotors start cracking up (4-5mm) all around and thinning up, and as brake pads loose thickness(of course unevenly) I start to loose performance in braking.
Here is example two
hillip Islland rice track turn 4 hair pin down to 80 km/hr
As approaching turn 4 I get to speeds of about 240km/hr and I will go hard on brakes at approximately 150 to 160 meters depending on the day and grip level I have available. After 3 to 4 laps rotors will heat up and my pedal will extend almost to the floor(I really mean thiss) it is not the greatest feeling when you are travelling at 240 km per hr and approaching 130 degree turn. I struggle to make the turn and go as deep in to the corner as I can hoping I will wash another few km of the speed before I turn in. I have learnt how to brake trail very quickly, thanks to my brakes problem. I am not saying they are not stopping me, they do but just.
To summerise all this for you:
Big power, heavy car(not in rice trim yet), and Big Reds are just perfect for first 40 % of rotors and brake pads life, after that they become throw away item unless you are prepared to loose few seconds of your lap times.
It will be very interesting if any body has a solution/fix to this problem.
Safe driving every one,
Zoran Letunica
