McLAREN MP4-12C GT3: McLaren's first racer for you!
Written by Motoism News    Saturday, 02 July 2011 17:23   
For the first time ever McLaren builds a racing car for outside the Formula 1 grid. Making its world debut at the 2011 Goodwood Festival of Speed, held from 30 June-03 July, the new GT3 car is based on McLaren’s MP4-12C high-performance road car.

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The 12C GT3 is being developed by the recently established McLaren GT.  Led by McLaren Group CEO Martin Whitmarsh and CRS Racing Team Principal Andrew Kirkaldy, McLaren GT is spending the 2011 race season developing the 12C GT3 before delivering 20 cars to privateer teams for GT3 racing in Europe in 2012.

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Andrew Kirkaldy from McLaren GT said: “The reaction to the 12C GT3 at the circuits we have visited has been phenomenal. I can’t wait to see how it goes down at Goodwood this weekend.

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“CRS Racing was clearly excited to be confirmed as partner in this project as we were only too aware of McLaren’s short, but unbelievable GT history with the F1. But the anticipation amongst circuit owners and race teams to McLaren’s return to GT racing has still surprised us.  I’m delighted that we have the opportunity to drive the 12C GT3 up the hill at Goodwood and raise the interest even further.”

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McLaren MP4-12C GT3 Technical Specification

Width (mm)

1995mm

Height (mm)

1145mm

Wheelbase (mm)

2670mm

Fuel tank capacity

120 litres

Chassis/body

McLaren carbon fibre MonoCell with aluminum front and rear frames and bespoke carbon body panels

Aerodynamics

Front and rear diffuser, front splitter, dive planes and adjustable rear wing.

Transmission

6 speed sequential using actuation via steering wheel mounted paddles

Limited slip differential with a range of ramps and adjustable pre-load.

Wet sump

Sintered clutch hydraulically operated

Driveshafts with tripod joints

Engine type

V8 twin turbo McLaren M838T

Engine capacity

3.8L

Bore x Stroke

93 x 69.9

Max. Engine speed

Limited to 7500rpm

Cylinder block

Cast aluminium , 90 deg V angle, dry sump scavenge, Nikasil coated liners

Crankshaft

Forged steel flat plane

Pistons

Forged aluminium

Conrods

Forged steel

Cylinder head

Cast aluminium with plastic composite cam covers, inlet & exhaust variable cam timing

Valvetrain

32V with 40 deg variable cam timing on intake & exhaust. Low mass with sliding contact end pivoted pinger followers, single variable rate springs and hollow cast chilled iron camshafts

Intake system

Two water/air charge air coolers. Plastic composite plenum.

Exhaust system

Cast stainless steel exhaust manifold with compact MHI fixed geometry turbo chargers.  970 deg C turbine inlet temperature.

Fuel system

Returnless fuel rail with twin fuel tank mounted pumps and twin spray injectors

Engine management

MESL TAG400 ECU & CIU 100

Interfacing with Bosch ABS and Shiftec control units

Wiring harness

Modular installation: Engine, chassis, fuel cell

Lubrication

MOBIL1: engine and transmission

Cooling

Air/water heat exchangers for engine water and charge air cooling combined with water/oil heat exchangers for engine, transmission & PAS.

Front axle

SKF integrated axles with handed single wheel retaining nut

Rear axle

SKF integrated axles with handed single wheel retaining nut

Front suspension

Double wishbone adjustable for ride height camber and toe

Rear suspension

Double wishbone adjustable for ride height camber and toe

Dampers

Coil over Multimatic dampers with DSSV technology with independent bump and rebound adjustment

Front brake system

Akebono 6 piston monoblock caliper

378Ø x 36mm Iron ventilated disc

Rear brake system

Akebono 4 piston monoblock caliper

355Ø x 32mm iron ventilated disc

Steering

Electro-hydraulic PAS

Wheels

Forged Aluminium

Front 12” x 18”

Rear 13” x 18”

MESL TPS system compatible

Cockpit electronics

Multifunction steering wheel with integrated driver display

Central switch panel with systems display screen

Steering wheel

Derived from MP4-24 Formula 1 wheel retaining integrated driver display, paddle shift and switches
 

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