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| Please note that the following
regulations are in a draft form and subject to change. They are provided
to allow competitors guidance in preparing a race car for the 2010 MR2
Super GT series. For more information, please contact the series organiser. MR2 Super GT Draft Regulations |
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| Overview: The MR2 Super GT series is designed to offer competitors a great deal of freedom in preparing a high performance MR2 race car, whilst at the same time providing a framework that keeps cars competitive and cost effective. It's innovative method of monitoring performance levels gives teams the opportunity to develop cars that suit their particular skills and resources. The MR2 Super GT series is for competitors participating in Toyota MR2 Mk1, Mk2 & Mk3 UK & Japanese domestic market cars. All vehicles must be of sound construction and mechanical condition and be well maintained. There is no requirement for an MOT Certificate, Road Tax or Insurance. There are no restrictions on the trailering of cars to/from the circuit. Cars will run in three classes:- Class A: Super GT 250 Class B: Super GT 200 Class C: Super GT 150 / MR2 Championship Class numbers refer to the upper performance index limit. Chassis - Permitted Modifications: The following Toyota chassis codes will be used to refer to the respective versions of the MR2: Mk1 MR2 - AW11 Mk2 MR2 - SW20 Mk3 MR2 - ZZW30 The construction and materials of the following bodywork parts is free: - Front Bumper - Front Wings - Bonnet - Doors - Rear Quarter Panels - Engine Bay Cover - Rear Bumper - Boot Lid Both front and rear wheel arches must extend past the wheels. The lips in the inner wheel arches may be ground down and seam welded to allow clearance for wheels. Wheel wells may be reshaped but must not have any material added or removed. Material may be removed from non-structural areas of the chassis (such as the boot floor). Material may be removed from the chassis to aid in the fitment of the engine and gearbox, provided that such modification does not compromise the integrity of the chassis. Any strengthening of such areas must be in keeping with the vehicle's original construction. The structure linking the two rear suspension turrets on the ZZW30 chassis may be removed and replaced with a similar structure constructed from tube or box section located further back to allow space for engine and gearbox fitment. This new structure must still connect the two rear suspension turrets in a single horizontal plane, which must also connect to the two chassis rails. Apertures may only be created in the front and rear cabin bulkheads for the purpose of routing wiring and pipework. All such areas must be correctly sealed and competitors are encouraged to use existing apertures where possible Additional bracing may be added to the chassis only through the use of pre-existing fixing points. Aerodynamic aids such as flat underbody, splitters, spoilers, diffusers and canards may be added. It is permitted to alter the ride height. Under no circumstance can any part of the bodywork, or of the suspended part of the car excluding the exhaust system, be below a horizontal plane passing 60mm above the ground, the car being in normal racing trim with the driver aboard. A gauge of 60mm may be used by Scrutineers before or after races or practice to check the ground clearance; the vehicle may be stationery or moving during any testing. The bodywork in it's entirety must fit within a theoretical envelope with the following dimensions: AW11: Length x Width x Height (TBA) SW20: Length x Width x Height (TBA) ZZW30: Length x Width x Height (TBA) All roll cages must be either five or six point, contained within the cabin area and fixed solely by their mounting feet and pre-existing fixing points. A laminated front windscreen must be fitted. All other windows may remain standard material or plastic (to blue book regulations) but must be fitted. The addition of colourless safety film to the glass is permitted. ZZW30 based cars running without a roof are not required to have a rear window fitted. Wing mirrors must be fitted in the standard location but are otherwise free. One or two windscreen wiper arms/blades must be fitted and be fully functioning. Washer systems may be removed. The standard engine bay cover locking mechanism must be disabled; only bonnet pins may be used to secure the engine bay cover in the closed position. Chassis - Prohibited Modifications: With the exception of the inner wheel arches, it is not permitted to seam weld any part of the chassis. With the exception of engine and gearbox clearance as stated above, it is not permitted to remove material from any structural parts of the chassis. It is not permitted to close panel gaps on an access panel to which access is required (ie bonnet, engine bay cover and boot lid) with tape. Interior: All standard interior trim, floor coverings and roof linings may be removed. Heating and air-conditioning systems along with their associated wiring and ducting may be removed. The dashboard may be removed. Standard instrumentation may be removed and replaced with non-standard items. The driver's seat must be replaced with appropriate racing seat, the passenger seat may be removed. Side windows need not be operable. An interior rear view mirror must be fitted to the left of the driver. Engine: Any engine originally manufactured by Toyota and fitted to a production vehicle may be fitted to any MR2 chassis. This also includes engines originally installed in Lexus vehicles. Modifications to head and block are free, but must be based on original standard parts. Crankshaft, connecting rods, pistons, valves, camshafts and manifolds are all free. Cylinder capacity may be increased or decreased by modifying cylinder bore and/or piston stroke. Forced induction may be added to naturally aspirated engines. Petrol and Diesel engines are permitted. Toyota variable valve timing (VVTi) and variable lift (VVTLi) systems are permitted. Ignition systems are free. Toyota's Hybrid Synergy drive may also be permitted - competitors intending to use this technology must contact the series organiser for guidance Engines must be orientated transversely and located in the vehicle's engine bay. Water radiators are free in terms of number, location and capacity. Engine and gearbox oil coolers are permitted and are free. Additional ducting is permitted. Sump type and material is free. Oil control systems (such as an accumulator sump) are also permitted. Induction systems are free. The crankcase breather must recirculate or vent directly to a catch tank. Exhaust systems are free but must exit at the rear of the vehicle. All ZZW30 based vehicles must be fitted with a catalytic converter. All vehicles must be silenced to current MSA regulations [C(b) 22 & 23]. Engine management systems (ECUs) are free, provided that they do not provide any kind of traction control except launch control. Drivers are permitted to interact with engine management systems during a race - eg. change turbo boost levels, switch maps etc. Spark plugs, ignition leads, coils, ignitors and coil-on-plug systems are free. Fuel: Fuel delivery systems including pumps, injectors, filters and tanks are free subject to meeting MSA safety requirements. Fuel tanks may either be standard or aftermarket or both, subject to meeting MSA saftey criteria. A non-return valve must be incorporated in the vent system. If present, the standard fuel tank must be in standard position. The location of aftermarket tanks is free subject to meeting MSA saftey criteria. Only petrol as defined in The Terminology, Pump Fuel a) section of the MSA Yearbook for the current year and complying with BS4040, BSEN228 or BS7800 may be used; fuel which exceeds the stated RON (max) levels in Appendix 1 of The Terminology is prohibited even if it is sold/promoted as being legal for UK Competition and/or obtainable from ‘roadside’ pumps. The use of additives by competitors which boost the octane rating (RON) in any petrol is prohibited. At the end of practice and the race at least 3 litres of petrol from the tank of the competing car must be available to the scrutineers for analysis. Compliance with minimum weight for the car will be taken before the petrol is removed. Transmission: Any transverse gearbox originally manufactured by Toyota and fitted to a production vehicle may be fitted to any MR2 chassis. This also includes gearboxes originally installed in Lexus vehicles. Only the rear wheels may be driven. Gear ratios may be changed only by using existing gears from other Toyota production gearboxes. Toyota's SMT (sequentially operated manual transmission) is permitted. Differentials are free but may not be electronically controlled. Fully sequential gearboxes are not permitted. Straight cut and aftermarket gearsets are prohibited. The use of any aftermarket electronic traction control device is prohibited with the exception of launch control if provided by the engine management system. Gearbox and final drive ratios are free. Suspension: Suspension must be BC Racing RM series type MH inverted monotube coilovers and sourced from the series organiser. Spring rates and damper valving are free. It is permitted to alter the ride height within the constraints of the minimum ride height. Adjustability of suspension geometry is limited to that provided by the controlled coilover kit. Suspension bushes are free. Anti-roll bars and drop links are free and may be adjustable. Modifications to the suspension pick-up points are prohibited; this includes the ‘slotting’ of suspension strut mounting points. It must not be possible for the driver to make any changes to the suspension geometry whilst seated in the cockpit. Offset and/or adjustable suspension strut mounts are prohibited. Hub-carrier brackets are prohibited. The wheelbase and track may be modified by using bolt on hub extensions or wheel offsets. Wheels must remain within the bodywork. Brakes: Brake calipers are free but must have no more than four pistons. Brake disks and pads are free. Deformation or removal of back plates is permitted. Fitting of alternative brake piping/hosing is permitted. Brake bias valves are permitted but must not be operable by the driver whilst seated. The braking system must remain fully operational in all aspects at all times, including the handbrake. ABS where fitted may be disabled or removed. Cars not originally fitted with ABS may be retrofitted with the ABS system from the same model only. Wheels and steering: Wheels may be steel or alloy only - magnesium wheels are not permitted. Wheel Diameter must be 15", 16" or 17". Wheel width must be no greater than 10". Offset is free. Steering rack is free and may be either powered or manual. If fitted with a steering lock, this should be rendered inoperative, unless the vehicle is driven to the circuit on the highway. MSA regulation G112. Tyres: The control tyre is the Toyo R888 in GG (medium hard) compound. The use of tyre heating/heat retention devices, tyre treatments and compounds is prohibited. No alteration to the tyre from the manufacturer’s specification is permitted. Re-cutting, regrooving or in any other way modifying the tread pattern is not permitted. All the manufacturer’s data must be clearly visible. Buffing of sidewalls to remove data is prohibited. Only tyres sourced from the series organiser and identified by a "shuriken" brand mark on the sidewall may be used. Permitted sizes are as follows: 195/50 VR 15 82V 195/55 VR15 85V 165/50 VR15 72V 205/50 ZR15 86W 215/50 ZR15 88W 225/50 ZR 15 91W 235/50 ZR 15 94W 225/45 ZR15 87W 195/50 ZR16 84W 205/55 ZR16 90W 215/50 ZR16 90W 225/50 ZR16 92W 255/50 ZR16 99W 225/45 ZR16 89W 245/45 ZR16 94W 215/45 ZR17 91W 225/45 ZR17 94W 235/45 ZR17 93W 205/40 ZR17 84W 235/40 ZR17 90W 245/40 ZR17 91W 255/40 ZR17 94W Electrics: There are no restrictions on type or location of batteries, subject to MSA regulations. A battery and electric starter motor must be fitted and be capable of repetitive starts. No external (slave) batteries may be used Vehicle lighting meeting MOT requirements for the number and placement of lights must be retained and all lights must be functional. The lamps themselves are free and need not be "E" approved. High intensity discharge systems and light emitting diodes are permitted. An LED rear fog light to EU regulation 7, an FIA homologated LED rear warning light, or an LED stop light to EU regulation 38 is mandatory and must be fitted within 10cms of the centreline of the rear window. Non integral rear fog lights may be removed. Integral rear fog lights must be rendered inoperative. A fully working alternator and pulley must be fitted and electrically connected so that the standard battery charging function is providing a charge to the onboard battery. Race Numbers and Series Decals: Race numbers must be displayed on each side of the vehicle alongside the cockpit/driver and as far forward on the front of the vehicle as possible. 750 Motor Club decals must be affixed prominently near all number backgrounds. Cars will also be required to carry MR2 Super GT series decals on front & rear number plates in the normal number plate position. Sponsor’s decals (where applicable) must be affixed in or near the positions detailed on any diagram supplied with those decals. 750 Motor Club and Series Sponsor’s decals must take preference to any other decals. Failure to comply will render the vehicle and driver ineligible to race. Sponsors and Club decals will be available at the first championship race in which the vehicle is entered. |
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