 HomeFormulae Racing with INCARACE Season 2002:
Telephone: +44 (0)1543 422046 FAX: +44 (0)1543 423231 Postal address: PO Box 1081, Cannock Staffs, WS12 5ZF Contents Copyright
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MINI STOX ORCi Min Stox 2002 Technical Specifications IMPORTANT! REVISED RULES FOR 2002 ARE HIGHLIGHTED IN THE WORD VERSIONS. IN THE EVENT OF ANY DIFFERENCE BETWEEN THE RULES ON THIS PAGE AND THE WORD VERSION THEN THE WORD VERSION TAKES PRECEDENCE. NB: In a letter to Ministox drivers dated 27 May 2002
the following points were highlighted with immediate effect: Click on the icons below to download the Technical Specs as Word documents
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| 2002 MINI STOX
SPECIFICATIONS The formula is based on a 1000cc Mini, as manufactured by British Leyland. VIOLATIONS When referring to the engine, gearbox, differential, mechanical or construction, rules and regulations the principle will always be: unless permission is specifically granted to make modifications, or any variation, nothing may be done to alter or change in any way the standard Parts. Unless these rules state you can do it, you CANNOT DO IT. Cars, Engines and Fuel will be checked on a random basis. Violations will result in an immediate suspension of all racing facilities and any refusal will also result in an immediate suspension. All car and engine specifications will be taken from the Technical Service Data book for cars as published by Glass's Guide Service Limited. Technical queries can be addressed to, The Secretary, O.R.C., Technical Committee, P.O.Box 9889, Birmingham, B43 6WA. NB: Drivers are reminded that scrutineer checks can be carried out at any time, and most certainly on all official championships. If parts are suspected of being illegal make sure you leave them with the promotion if you do not agree. If you refuse it will automatically make the parts illegal. It is the responsibility of the driver to prove to the promotion that the part is legal by the way of written proof of where the part originated. This must be done within seven days, otherwise the part(s) in question will be deemed to be illegal and will result in immediate suspension from racing and referral for disciplinary action. 1. BODY Only Mini, Mini Clubman, Riley Elf or Wolsely Hornet Saloons are acceptable providing all run with 850cc/1000cc running gear on the front and rear. A metal upright min size ¾" square must be welded or bolted into the windscreen aperture, one third of the way along the driver's side. Passenger door may be cut down a max of 3" drivers door 1½". A full firewall must be in place between the driver and fuel tank and engine bay, with all holes blanked off. The interior of the car must be completely gutted of all combustible materials, glass and trimmings. All external lights, fittings and bright metal trim must be removed. The doors may be skinned, along with the rear pockets; the rear parcel shelf may be removed. The doors must be welded shut. A steel boot floor must be in place on all cars. Though not necessarily original, this must tie the vehicle floor pan, rear arches and rear panel together and be welded in position. Further alloy firewalls behind the driver are permitted and drainage holes in the area around the location of the fuel tanks are compulsory. Aerofoils are not permitted. The floor pan must be retained and made good, where the internal iron work is joined to the external iron work the body or floor pan must be made good. 2. WEIGHT Each car, as presented ready for racing, must not weigh less than 14cwt (712 kg). Racing weight must be achieved without the use of ballast. All internal ironwork must be of equal proportions on both sides of the car in construction and gauge. The driver's floor pan may be reinforced with steel plate maximum thickness 3mm. 3. ENGINE, GEARBOX & DIFFERENTIAL The regulations for the 1000cc engine are as follows : A nominal bore of 64.59mm plus 1.5mm oversize allowed. A standard stroke of 76.2mm (original cc 998). Pistons must be standard 998 replacement type, with all rings in place. Only standard replacement rings are allowed (No competition or total seal rings allowed). The block may be surface ground, but the piston must be level or down the bore. The block may be rebored or sleeved back to standard and rebored or line bored. No other alteration allowed. The head must be standard Mini 1000 casting and may be surface ground to a minimum thickness measured between the top and bottom machined faces of 2,700 thou. Valves must be standard or replacement Mini 1000 Valves of standard length and standard valve head size of 27.89 inlet, and 25.53 exhaust. Valve seat angles are free, but there must be no machining or fettling past the valve seat on the valve or the head. Standard valve spring top and coletts must be retained. Any single valve spring that fits without the need for machining may be used. The combustion chambers and ports may not be modified in any way and must not have any material added or removed. Replacement valve seats may be fitted, but must be level with the bottom of the combustion chamber. Only the standard replacement gasket allowed. Any camshaft may be used that fits without additional modification to the engine or components. Cam followers, push rods and rockers must be standard Mini 998. NO VERNIER PULLEYS ALLOWED. You may use off-set woodruff keys. Standard timing chain and tensioner must be used. Only the standard type distributor may be used. The advance may be altered and you may lock the base plate. No electronic ignition systems are allowed. You may not lighten, balance or stress relieve the pistons, con rods, crank shaft or flywheel. All oil ways and galleries must remain unmodified. Oil pickup pipe may be repositioned. No oil coolers or remote oil filter allowed. Compact oil filters are allowed. Only the standard Mini 1000 1½" carburettor with the single outlet exhaust is allowed, used with the restrictor plate provided by your ORCi Promoter. No modification to the carburettor allowed. Jets and needles are free. Air cleaners are free. No trumpets allowed. The radiator must be within the engine compartment and be of the standard type. Solid engine mountings allowed, and engine stabilisers may be fitted. A 50mm hole must be machined in the engine end cover in a convenient location for checking the flywheel. Gearbox. You may only use the standard 850 or 1000 Mini gearbox all gears must be in place and all gears must be original equipment ratios. Diff ratios are free, however the formula may be restricted to one ratio in the near future. All diffs must be unlocked, no limited slip or power lock types. The engine must be fitted with a metal catch tank of 1 litre minimum capacity connected to the engine breather system. For the 2002 season, all cars registered or racing with Spedeworth or Ringwood are subject to additional rules regarding gearbox and differential ratios. Please see Item 18 under Quick reference chart for further details. 4. ROLL CAGE A full roll-cage must be constructed of minimum 38mm (10 gauge) square or round tube. The cage to consist of screen hoop and hoop behind driver with connecting bars in the roof. All four uprights must have a steel plate on the base bolted to the floor no less than 100mm square minimum, one eighth thick. Two chicken bars must be fitted to the roll-cage on the driver's side and one on the passenger side. A 3mm plate must be welded to the outside of the chicken bars inside the car. A horizontal bar must be fitted across the roll cage pillars at shoulder and floor level behind the driver and at scuttle panel and floor level in front. This bar must be a minimum size of 2" x 1" or 1½" x 1½" or tube equivalent. A 3mm thick roof plate must cover half the roll cage area above the driver and be supported on all sides. All roll cages must terminate within the vehicle. The use of steel mesh is permitted in the front windscreen, but must end ½ way across on the drivers side only. 5. IRONWORK Protection bumpering and side rails constructed from 50mm x 30mm, 50mm x 25mm or 40mm x 40mm hollow steel rectangular box must be constructed in accordance with illustration, to ensure even contact between cars. The front bumper must consist of two horizontal bars, with a minimum of 4 and a maximum of 5 vertical uprights. The curve at front and rear corners of bumpers must not extend more than 150mm from the line of the side iron. Corner gussets up to 150mm triangular of 6mm thick plate may be fitted. Two through irons may be fitted underneath the car from front to rear bumpers to hold sub frame in place 50mm x 30mm, 50mm x 25mm or 40mm x 40mm hollow steel box as in other parts of ironwork or metric equivalent may be used. Protective ironwork inside the car rear of the engine compartment is up to individual and is free (See Regulation 2). Any additional gussets must not exceed 80mm x 80mm. The ironwork may be used as a location for the front and rear subframe mounting brackets. Sub frames may be strengthened by the use of steel plate or hollow section. Sump guards may be fitted but must be securely welded to the ironwork. 6. WHEELS & TYRES Any standard manufacturers steel wheel 10" or 12" up to a maximum of 5" width may be used. Weller wheel etc. may be used with a maximum width of 5", a maximum inset of 3¼" and a maximum offset of 2¾" this measurement is taken from the back of the wheel rim to the back of the wheel stud flange face. Only 10" wheels are allowed on the back. Wheel studs may be modified to suit. Any tyre to a maximum width of 6.2 or 165 may be used. Competition tyres cannot be used. No wheel spacers allowed. No regrooved or Town & Country tyres are allowed. All identification marks must remain on tyres. No tyre flaps allowed. The Yokohama AO32R, Avon CR6ZZ and Dunlop Formula R are not permitted. 7. SUSPENSION - FRONT Suspension components must remain standard. You may lengthen the near side track control arms by up to 20mm in length to give negative camber. You may also shorten or lengthen the near side front tie rod. The modified components are not permitted to be adjustable on the vehicle. All suspension parts must be mounted in the original position and must not be attached to any additional ironwork. All cars must have suspension movement up and down. No lowering allowed. Push fit drive shafts may be lengthened upto 25mm to prevent driveshafts popping out on impact, ride height will be measured on the drivers side between the floor and the roof gutter midway along the car; it must not be less than 116.5cm. The steering rack may be lengthened, near-side only up to 20mm, or track rod ends may be changed to accommodate a longer track control arm. The repositioning of the near side front top shock absorber mounting is not allowed. 8. SUSPENSION - REAR The use of negative camber is not permitted on rear suspension. All suspension parts must be mounted in the original position, however sub-frame mounting points may be attached to the ironwork. 9. FUEL SYSTEM Only tanks with a maximum capacity of 2 gallons are permitted, these must be fitted inside the boot area where they are separated from the driver and securely mounted. All tank filler caps must be of metal and screw fixing. Petrol pipes must be of metal or metal covered and have a shut off tap within easy reach of the driver. All tanks must be fitted with a breather system which prevents spillage if a car is inverted. All petrol pick up pipes must draw through a stand pipe from the top of the fuel tank. Electric fuel pumps can be used in place of the standard manual pump but they must be situated in the boot behind the fire wall, 4 x 2" holes must be drilled at the lowest point under the fuel tank to allow spilled fuel to drain. The use of in-line fuel pressure regulators is allowed. 10. BATTERIES & ELECTRICAL Batteries must be securely clamped in place behind the driver with a leak proof material to prevent spillage of acid. An electrical cut/off switch must be fitted to the R/N/S corner of the car. If a car is fitted with an electrical fuel pump, a switch must also be within easy reach of the driver. Self starter motors must be fitted and in working order at all times. 11. BRAKES Brakes must be effective on all four wheels. A handbrake must be fitted, in working order. Two brake lights must be fitted and working to be able to race on non contact tracks. These lights must be disconnected when racing on contact tracks. (See Rule 22 for Brake Light Specifications). Mini 1000 front disc brakes are permitted, you may skim the callipers to allow 10" wheels. The use of standard Mini 1000 spacered rear drums are allowed provided they are fitted to both sides. Brake servos may be fitted as standard or remote, but it is not permitted to fit a servo which requires changes to the pedal box etc. 12. SEATS Fibre glass seats and other special seats are recommended, and must be securely fitted. The back of the seat must be adequately supported and provide a strong head restraint otherwise this restraint must be an integral part of the roll cage. Drivers seats may be moved up to 3" from original position towards the middle of the car. A 75mm x 6mm flat plate shaped to the seat at shoulder height and welded to the roll cage must be fitted as support for the seat. 13. NUMBERS Numbers must be displayed on both side of the car and also on a roof fin plate. Regulation side numbers must be 12" high in 2" strokes. Regulation fin numbers must be 9" high on 1½" strokes. All numbers must be of professional appearance, painted black on a minimum white background of 2". 14. SAFETY BELTS / EQUIPMENT Only belts comprising separate shoulder, lap and sub-straps will be permitted. The sub-strap must be used at all times and all belts must connect to the quick release buckle. In the case of NASCAR lever latch buckles, it is advisable to fit a secondary means of detent to prevent overall sleeves accidentally unhooking buckle during racing. A small section of tubegrip elasticated bandage slid over the locked buckle serves this purpose. Special attention must be paid to the condition of seat belts and fixings once fitted. A quick release cloth window net must be fitted to the drivers door window aperture and should be flexible and easily removable separate to the movement of the door. Neck braces and fire retardant gloves are compulsory, fire retardant balaclavas are recommended. Seat belts must be supported at shoulder height behind the seat, this can be incorporated into the seat support. It is vital with a small child that where the drivers shoulders are below the top of the seat, the seat belts pass through the seat and are supported just below the shoulders. Full information on the correct fitment of seat belts is available from your promoter. 15. SIGN WRITING The driver's name must appear plainly on both sides of the car. Only other writing confined to sponsors or mechanics names. Childish drawings are not permitted. The drivers age must be painted on the side of the car above the number. 16. ROOF COLOURS IMPORTANT! REVISED RULES FOR 2002 ARE HIGHLIGHTED IN THE WORD VERSIONS. IN THE EVENT OF ANY DIFFERENCE BETWEEN THE RULES ON THIS PAGE AND THE WORD VERSION THEN THE WORD VERSION TAKES PRECEDENCE. Click on the icons below to download the Technical Specs as Word documents
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