The M40 Speedway "ENDURO JONES CHALLENGE SERIES"
will be featuring four 4-cylinder Enduro events
The dates for the 4 events are as follows:
Sundays: May 4th, June 1st, August 3rd, September 14th
Gates Open at 10 am
Line Up is on a First Come-First Serve Basis, 3-wide on the track. That will be your starting position.
Must be lined up by 12:00 pm ! We will tech between 12:00 and 2:00 pm. If you do not pass tech, you will be sent to the tail.
Race starts at 3:00 pm and will be 200 LAPS.
Any Four Cylinder Front Wheel Drive Cars, except the following: No Convertibles, No Trucks, No Two Seat Coupes, No Turbo or Super Charged Engines, No Multi Carburetors, No Rotary Engines, No Mid or Rear Engine Cars, and No Cosworth Engines. Factory Stock Fuel injection only. Honda CRX is OK.
Maximum Wheelbase – 105"
Complete Stock Body – front to rear, stock frame, stock suspension, stock front & rear firewalls, Stock, Stock, and Stock! All trunks & hoods will have working stock hinges. Hoods & trunks must be secured with hood pins only – remove all factory hood & trunk latches. Bumpers should be chained or strapped to frame. All holes in firewalls or floor must be covered with metal. Steering and suspension must be stock - no modifications. ½" camber allowed measured with a carpenter square.
Dashboard, Steering & Pedals must be Stock – Cars must have a working horn or radio, with the steering column and dash intact. No Mirrors. All cars must start with a key, or use a push button/toggle switch hooked directly to the steering column wiring harness. The vinyl cover on the dash may be removed.
All Glass except for the windshield must be removed. Lexon windshield is OK. All loose glass must be vacuumed out of the car. All wheel weights must be removed from every tire that you are racing on, including your spares. You must take off each tire, and check for wheel weights on the inside and outside of the wheel. If you get up to the tech area with any wheel weights on your wheels, you will be sent back to the pits to remove all wheels and inspect them inside and out.
All insulation & upholstery under the hood, on the floor, and in the interior of the car must be removed. All headlights, taillights, loose chrome, etc. must be removed from the car.
Stock transmission for that makes & model of the car.
Battery may be relocated, strapped securely, and covered.
Stock Exhaust System with muffler, exiting behind the driver's seat. Maximum exhaust size will be 2".
Gas Tank – If the stock gas tank is located ahead of the rear axle, it may remain in place. Any tank behind the rear end must be replaced & relocated in the trunk. Use a small fuel cell (8 gal or smaller) or a boat gas tank. Fuel cell or boat gas tank will be mounted in the farthest forward area of the trunk, securely fastened with at least 4 straps. Rear firewall must be enclosed if the gas tank is placed in the trunk.
Tires & Wheels – Stock wheels for that make & model of car. Right front wheel may be replaced with a safety wheel. All wheels will be a maximum of 15" x 6" wide. All wheels & tires will be the same size & profile on all 4 corners. Approved passenger car tires only, No low profile, trick or exotic tires. Maximum tire width is a 70 series tire (No 65 or 60 series tires). Maximum size for a 15" wheel is a 205 - 70.
Safety Requirements – A roll cage with a minimum of a rollover bar is required, with the rollover bar being just behind the driver's seat. The minimum tubing size is 1½" x .095 thickness, and must be securely welded or bolted to the car. All cars must have a minimum of 3 door bars on the driver's side, built in as part of your roll cage. The front portion of the 4-post cage must go up over or under the steering column and over to the right side of the cage. Do not attach the 4 pieces of the upright tubing of your main cage simply to the floor board tin. We strongly suggest that you weld and/or bolt a piece of tubing that lays flat on the inside of the car, running parallel with the rocker panel, where your rocker panel and floorboard are seamed together. This piece of tubing installed on each side of the car (apron 42"long) can be welded in several spots to the inner rocker panel/floorboard area, and will be an excellent spot to attach your 4 uprights of your main roll cage. Call if you have any questions on this. These 4 upright bars are what your main cage consists of and are where your door bars will attach to, they need a good solid area to attach to. No removing of any interior metal inner body panels, except for clearance for driver's side door bars. Driver's side door plates are recommended, either over the door bars, or they can be welded or bolted to the outside of the driver's side door, overlapping the front and back door seam. Both doors must be welded or chained shut. If a stock seat is used, make sure all tracks are bolted in place. The back of the seat must be secured to the back of the roll bar. A racing seat, mounted to the roll cage is highly recommended. A driver's side window net is required and must be able to unlatch for easy driver exit. A set of racing seat belts and shoulder harnesses are required, mounted in a safe and proper fashion. Helmet must meet minimum DOT standards; a Snell approved helmet is suggested. An approved fire suit top is required, a full fire suit, including racing gloves and shoes are highly recommended. No lead, concrete, or any ballast may be added to the cars.
Rear Bars We are allowing the placement of two rear bars, solely for the purpose of safety and to try to keep the rear of the car from folding up so easy. Maximum of any tubing size will be 1 3/4", round or square; there will be no 3" or 4" channel. The rear bars may extend rear-ward from the top of the cage behind the driver, angling down towards the rear of the trunk area. We suggest having a piece of tubing welded flat on the trunk floor, back near the kick-up of the very rear of the trunk area. This is the material that your two rear bars will attach to. No bars of any kind will extend out through the rear of your trunk area; any bars out past this point will need to be cut out before racing. Your two rear bars may run down along side of the two strut towers, to help keep them from rolling in so easy. The bars may be up against the towers, but are not allowed to be attached in any way to the towers. You may have 1 - X in between your two diagonal bars or you may have 1 horizontal bar going between your two bars, nothing more than that. Call if you have a question on this!
M40 Speedway Officials will have the final word on the eligibility of any car!
Download 2008 Enduro Rules in Adobe Acrobat PDF format for easy printing.
