Porsche 991.2 GT3 Cup Car Technical Specs

Overview

Front suspension Independent McPherson strut with double clamped upright
Rear suspension Independent multi-link rear suspension
Steering The hydraulic power steering is derived from the 911 GT3 Cup (997) while the power steering pump has its origins in the 911 GT3 R
Hydraulic oil filling quantity: 0.65 liters (0.69 qts)
System pressure: 96 bar (1,392 psi)

Dual-circuit hydraulic brakes system with two separate master cylinders. The front to rear brake balance can be changed by rotating the brake balance knob in the vehicle’s interior
Front brake disc One piece steel – Diameter = 380 mm, Brake disc thickness 32 mm, 6 piston – aluminum brake caliper.
Rear brake disc One piece steel – Diameter = 380 mm, Brake disc thickness 30 mm, 4 piston – aluminum brake caliper.

Based on the previous model, the following major development objectives were set and implemented in the chassis for the 911 GT3 Cup (991.2):

Improved drive shaft cooling
Improved rang support
Improved space between rim & front axle
Compared to the previous models the aerodynamics of the front cover were further improved, as well as optimized air intake and cross outlet sections, improved brake cooling, optimized (fully closed) underbody paneling, and more.

Trim without noise insulation, integral roll cage
The interior design Focuses on ergonomics and drivers safety. The center console is tilted towards the driver in order to improve accessibility of the control elements. Appearance improvements feature colored controls and a Cosworth data logger with colored display
100 litre FT3 safety fuel cell
FIA homologated Recaro racing bucket seat with height and longitudinal adjustment
6 Point safety harness
HANS System All cars from the 2004 model onwards are optimised for the HANS safety system
Fire extinguisher system, compliant with FIA standard

Fuel system 100 L.
Gearbox 3.0 L after rebuild
New Engine ca.9.5 L. (The Oil level check should be carried out with the dipstick, through the filler neck with the engine at operating temperature and running at idle speed).
Engine 6.6L including oil filter change; 6.0L without oil filter change

Engine oil Mobil 1 ESP X3 (0W – 40)
Coolant 22L
Recommendation: 2L anti-corrosion additive + approximately 20L water
Gearbox oil ‘Mobilube’ SHC
Steering servo oil ‘Pentosin’
Fuel 98 RON Super Plus unleaded
Brake fluid Racing Brake Fluid-325° (DOT 4) Porsche spare part No: 991.355.960.8A
Air jack A pressure of 35-38 bar is necessary to operate the air jacks.