Porsche 911 GT3 Cup 2008, Техническое руководство

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Brake system 911 GT3 Cup PCCB
The Porsche 911 Cup car has a twin-circuit hydraulic brakes system
with two separate main cylinders.
The front to rear brake balance can be changed by adjusting the brake
balance adjuster bar. The brake discs are made of Ceramic Composite
(PCCB – Brake discs)
Front brakes:
Brake discs: Ventilated, PCCB floating, D=380mm B=34mm
Brake pad: Pagid P50 (light green)
Pad thickness: 13mm without backing plate
18mm with backing plate
Brake caliper: 6-piston aluminium monobloc
Caliper pistons with Zirkonoxide inserts
Rear brakes:
Brake discs: Ventilated, PCCB floating, D=350 mm B= 28 mm
Brake pad: Pagid P50 (light green)
Pad thickness: 13mm without backing plate
18mm with backing plate
Brake caliper: 4-piston aluminium monobloc
Caliper pistons with Zirkonoxide inserts
Brake system notes
PCCB Brake discs:
The PCCB brake discs should be handled very carefully. Care should
be taken that no damage occurs when fitting wheels or when cleaning
the cooling holes with a drill bit. Brake discs with mechanical damage
must be replaced. The PCCB brake disc wear can ONLY be determined
by the weight reduction and not by the reduction in the disc thickness.
The wear indicators on the brake discs are irrelevant for racing
purposes. Weighing scales with a fine scale are recommended to
weight the discs, and documentation indicating the weight compared to
mileage completed. To guarantee accurate PCCB brake disc wear
records, the new weight and a consecutive number is engraved on the
disc bell. The weight reduction of the brake duct may not exceed
100g, when compared with the new weight. The brake disc wear is
reached when the weight reduction is more than 100g. To make a
reliable wear calculation the brake disc must be free from brake dust,
rubber pick-up and any other dirt. The brake disc assembly must not
be disassembled. The PCCB brake disc must be bedded in carefully
when new, to guarantee a long life and high brake performance. When
bedding-in the disc, the disc temperature must not exceed 250°C. The
surface appearance changes from matt to shiny after the bedding