The specification detailed below is the current specification for the Corsa recently built by GMC Motorsport.

 

Bodyshell

1994 Opel Corsa bodyshell, seam welded throughout for torsional rigidity, with additional strengthening at all suspension mounting points and front crossmember.

Professionally installed T45 16 point FIA Approved Weld-in Roll Cage.

Re-designed box section rear inner wheel arches to enable installation of non-standard coilover strut assembly.

Removal of all unnecessary non-structural steelwork from shell.

Roof mounted Air Vent with adjustable discharge outlets.

4mm Polycarbonate clear sheet to replace all side and rear glass with integrated slider kits fitted to driver and navigator windows. Windscreen is standard laminated.

Front and Rear sill mounted axle stand apertures.

Lightweight, Fibreglass Bonnet with Air Intake to assist airflow within engine compartment. 

Corsa Kit Car boot mounted spoiler.

8mm thick Aluminium Sump Guard protecting engine and transmission.

2mm Galvanized Sheet Steel Tank Guard.
 

 

Fire Protection

2.25 litre AFFF FIA Approved plumbed-in Fire Extinguisher with dual engine bay discharge nozzles. Extinguisher can be actuated both internally or externally by emergency pull handles.

2Nr hand held 1.75 litre AFFF Fire Extinguishers located in navigator’s footwell and adjacent tailgate.

 

  

 

Fuel System

 

Twin (duty & stand-by) Facet red-top electric Fuel Pumps located within a sealed enclosure transffering fuel from tank to swirl pot mounted in engine bay.

High pressure fuel pump transferring fuel from Swirl Pot to Fuel Rail at 3 bar pressure.

Stainless steel braided rubber fuel hose throughout.

Adjustable Fuel Pressure Regulator.

Aluminium Swirl Pot fuel chamber.

Jenvey Throttle bodies and Bosch Injectors.

 

 

Electrics

Extensive wiring modifications to suit motorsport requirements.

Emergency electrics Cut-off Switch which can be operated from inside & outside of car.

Additional Fuse Box located in centre console for essential services.

Engine observation gauges which display, Oil Pressure, Oil Temperature & Battery Voltage.

Multiple Switch Panel to control Fuel Pumps, Spot Lights, Intercom etc

Console mounted external temperature gauge.

Dual switched, 4 lamp bonnet mounted Light Pod with 100w Halogen lamp fitted to each spotlight.

Peltor two-way intercom System.

Terratrip back-up intercom system

Internally mounted Camcorder fixed at high level between driver & navigator seats.

 

 

 

Seats, Harnesses & Steering Wheel

 

FIA Approved Cobra Suzuka Competition Seats.

FIA Approved Sabelt 6 Point Harness Set.

OMP WRC Suede Steering Wheel.

 

Braking System

Front : Willwood Dynalite 4 Pot Billet Brake Calipers.

: 256mm Ventilated and Curved Vane Brake Discs.

Rear : ATE 2 Pot Cast Brake Brake Calipers

: 236mm Solid Brake Discs.

Controls : Balance Bar Bias Pedal Box with phosphor bushed cross bar.

: Willwood Fly-Off Hydraulic Handbrake.

General : Aeroquip stainless steel brake pipes throughout.

: Mintex F4 competition Brake Pads.

: DOT 5.1 Competition Brake Fluid.

 

 

Suspension System

Front : Bilstein 2.25” tarmac specification coil-over strut assembly with Spherical Adjustable top mounts.

: Progressive 2.25” tarmac specification springs.

: SFN Nylon Suspension Bushes.

: OMP adjustable Strut Brace

Rear : Leda 2.25” tarmac specification coil-over strut assembly with adjustable damper/rebound control

: Progressive 2.25” tarmac specification springs.

: SFN Nylon Suspension Bushes.

: Purpose built steel Strut Brace.  

Steering : 'Quickrack' steering rack with electric power steering.

 

Wheels / Tyres

Tyres : Michelin TA00’s, 20’s and Yokohama A038ss (dependent on conditions and surface).

Wheels : Revolution and Compomotive 14” & 15” wheels.

 

Transmission 

Quaife 5 speed Straight Cut Close Ratio Gearbox.

Low Ratio 4.53 Crownwheel and Pinion kit.

200mm competition 3 Piece Clutch Kit.  

 

Engine

Opel Corsa 1.4 16v Bowyer development engine controlled by MBE Management system.

176bhp @ 7600rpm

Camshaft

ENEM specially profiled rally specification camshaft. Power delivery band : 4,000 – 10,000 rpm.

Cylinder Head

Modified inlet port to ensure optimum atomisation and delivery of air/fuel mixture into combustion chamber.

Modified exhaust port to allow unrestricted flow of exhaust gases.

Flow bench tested prior to assembly.

Double wound valve springs.

Top adjustable solid tappets.

Engine Block

Dynamically lightened & balanced Crankshaft.

Dynamically lightened & balanced Flywheel.

Dynamically lightened & balanced Clutch Cover.

Cosworth High Tensile Steel Big-end & Main Bearing Bolts.

Lubrication

5 Ltrs 10W-40 Esso Ultron Fully Synthetic Oil