Porsche 991.1 GT3R Technical Specs

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Overview

  • Engine Type: 4.0L Six-Cylinder Boxer Engine
  • Gearbox Type: G91/73
  • Number of Gears: Sequential 6
  • Chassis: Based on the Roadgoing 911 GT3RS
  • Dry Weight: 1220 kg
  • Wheels: 12J x 18″ Front 13J x18″ Rear

Suspension & Steering

  • Front suspension Independent McPherson strut with double clamped upright
  • Rear suspension Independent multi-link rear suspension
  • Steering Hydraulic power steering

Wheels & Tyres

  • Single Piece Forged Aluminum BBS Center Mount Wheels
  • Front 12J x 18″
  • Rear 13J x18″
  • Tyres Front 30/65-18 Michelin Rains (Delivery Spec)
  • Rear 31/71-18 Michelin Rains (Delivery Spec)
  • Centre lock Front and rear axles

Brakes

  • 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 34 mm, 6 piston – aluminum brake caliper.
  • Rear brake disc One piece steel – Diameter = 372 mm, Brake disc thickness 30 mm, 4 piston – aluminum brake caliper.

Chassis

  • The bodywork is manufactured entirely from carbon-fibre Kevlar composite material. Panels like the inner wheel arches and sills have a higher Kevlar content for flexibility and durability reasons
  • Front-end packaging is improved by eliminating the two small side water coolers, which were prone to damage in close racing. The centrally mounted water cooler is better protected from collision damage. The cooling air exits via a duct in the bonnet. The carbon-fibre cooling air channels for the cockpit are laminated onto the underside of the bonnet and further enhance the packaging.

Interior

  • 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 switches and control elements
  • The Cosworth LCD system features a high-resolution full colour 6.2-inch TFT display
  • FT3 safety fuel cell with a nominal capacity of 120 litres. The fuel cell complies with current FIA standards and is housed in a protective carbon fibre crash structure
  • Recaro racing seat complying with the latest FIA Standard 8862-2009
  • 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
  • Roof rescue hatch for easier access and extrication in an emergency

Dimensions & Weight

  • Length 4604 mm
  • Width 2002 mm
  • Wheelbase 2463 mm
  • Dry Weight ca. 1220 kg

Fluid Capacities

  • Fuel system 120 L.
  • Gearbox 3.0 L
  • New Engine ca.12 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 Oil Change Use new oil and refill the volume of oil drained + 0.250 litre (oil filter volume)

Lubricants & Fuel

  • Engine oil Mobil 1 (0W – 40)
  • Coolant 22L
  • 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.

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