COTTAGE GROVE SPEEDWAY MODIFIED RULES 2008

NOTE: The rules and/or regulations set forth herein are designed to provide the orderly conduct of racing events and to establish minimum acceptable requirements for such events. These rules shall govern the conditions of all events, and, by participating in these events, all drivers are to have deemed to comply with these rules. No express or implied warranty of safety shall result from publications of or compliance's with these rules and/or regulations. They are intended as a guide for the conduct of the sport and are in no way a guarantee against injury or death to participants.

GENERAL RULES:

1. Cottage Grove Speedway officials have authority over all events. At the discretion of the official (s) in charge, any competitor may be disqualified for rule violations or hazardous equipment or hazardous actions.
2. All race vehicles subject to inspection at any time.
3. Approval of race vehicles by the inspector shall mean only that the vehicle is approved for participation in a competitive event and shall not be construed in any way to mean that the vehicle is mechanically sound. Be it furthers that the inspector shall not be liable for any mechanical failure.
4. Any unsportsman like conduct by drivers, owners and/or pit crew members, shall be grounds for disqualification and will be strictly enforced. Drivers are responsible for the conduct and actions of their crew members and shall be the sole spokesman for the race team. Drivers will be paid all moneys and must furnish Cottage Grove Speedway with their valid social security or tax number and a current address.
5. Absolutely no alcoholic beverages or illegal drugs allowed in the pit area. Absolutely no alcoholic beverages will be consumed by the drivers or their pit crews prior to, or during Cottage Grove Speedway events. Use, sale or distribution of illegal drugs at any time shall mean immediate and indefinite disqualification.
6. All drivers must be at least 16 years of age (proof required). i.e. birth certificate, drivers license. Drivers under 18 years of age must have a signed and notarized parental consent form, from a parent or legal guardian. This said document must be in the hands of Cottage Grove Speedway officials before participation of said individual will be allowed to participate in any race.
7.  Protests.  TECH INSPECTOR HAS FINAL DECISION.
8. All participants will be required to have a transponder on their race vehicle.  You may purchase or rent one at the track.

UNWRITTEN RULES WILL NOT APPLY!!

CAR SPECIFIC RULES

1. ROLL CAGES:
(A) Must consist of continuous hoops not less than 1.666-inch outside diameter with a wall thickness of at least .095-inch. Low carbon, mild steel tubing is recommended.
(B) Must be frame-mounted in at least six places. No brazing or soldering allowed.
(C) Must consist of a configuration of front and rear hoops connected by tubing on the sides or side hoops. Driver's head must not protrude outside cage with helmet on and strapped in driver's seat. Must have minimum of one cross bar in top halo of roll cage. Roll cage must be securely supported and braced.
(D) Protection of feet is mandatory. Bar across back of engine with vertical bars and rub rails, or similar protection. No brace bars forward of cage may be higher than stock hood height. Main cage cannot be any further forward than engine plate.

2. DOOR BARS:
A minimum of three driver side door bars, at least 1.5-inch O.D., must be as parallel with the ground as possible, and located perpendicular to the driver so as to provide maximum protection for driver, but without causing undue difficulty in getting into or out of vehicle. The sidebars must be welded to the front and rear of the roll cage members. Must have at least one cross door bar, minimum 1.25-inch O.D., on passenger side of car, either horizontal or angled. Steel door plates, 18 gauge or .049-inch minimum thickness metal, must be securely welded to outside of door bars on driver's side. Plate must cover the area from the top door bar to the bottom door bar and from the rear down post to five inches in front of the seat. Must be visible for inspection.

3. SAFETY:
Helmets are required and must be Snell 95 or newer. Neck brace and arm restraints or window net required. Helmet must be worn at all times when car is moving and must accompany vehicle at time of inspection. Roll bar padding required in driver compartment. Fire retardant padding recommended. SFI approved full fire suits of a flame retardant nature must be worn by all competitors. Fire retardant neck braces and fire retardant gloves are required, fire retardant shoes highly recommended. Arm restraints or full-size (minimum 16"x20") driver-side window net required (no string-type nets). Window net to be mounted so latch is at top front of window. Five point safety belts, sub belt, shoulder harness required. The shoulder harness must be mounted securely to the roll cage. Belts and harness no more than three years old. Aluminum high-back seats only, must be bolted in and mounted inside the frame rail and ahead of the rear tire. Bottom of seat can be no lower than the bottom of the frame rail. Kill switch required within easy reach of driver clearly marked 'OFF' and 'ON'. 360-degree drive shaft loop required and must be constructed of at least quarter-inch by two-inch steel, or one-inch tubing, mounted six inches back from front U-joint. Steel drive shafts (minimum two-inch diameter) and yokes only. Drive shaft must be painted white.

4. ELECTRONICS:
No transmitting or listening devices allowed. No electronic monitoring computer devices capable of storing or transmitting information except tachometers will be allowed. No timing retard controls or oxygen sensors allowed. One 12-volt non-adjustable ignition box and coil allowed - must be out of driver's reach. No additional ignition accessories allowed. The only change that can be made with ignition box is rev-limiter setting, and only one high-end setting is allowed. This setting can be changed through one chip, or an internal setting inside the box.  Digital gauges allowed.

5. EXHAUST:
MANDATORY:  Mufflers are required.  No straight out headers.
 Exhaust system must turn towards the rear of the car and must be mounted in such a way as to direct spent gasses away from cockpit of vehicle and away from areas of possible fuel spillage.  NO SUPER TRAPS.

MANDATORY: Must be 95db @ 100 feet or YOU WILL NOT RACE.

6. FUEL SYSTEM:
Racing fuel cells required and must be mounted by at least two solid steel straps, two inches wide around cell. Fuel cells must be enclosed in steel container and must be mounted securely behind rear axle and between the rear tires, no lower than six inches off the ground, protected by roll-cage tubing. Protective tubing must cover the rear and extend past both sides of fuel cell. Fuel cell must be a minimum of four inches ahead of rear bumper and no part of fuel cell shall be lower than protective tubing. Fuel cell vents, including cap vent, must have check valves, and bladders are highly recommended. Fuel cells are limited to 32-gallon maximum capacity. Pickup must not be underneath fuel cell. A limit of one standard fuel filter allowed between the fuel cell and carburator.

7. FUEL:
May be either gasoline or alcohol. NO Nitrous Oxide. No performance-enhancing fuel additives of any kind allowed.

8. BATTERIES: One 12-volt battery only, must be securely mounted and shielded. All vehicles must have the capability of starting without being pushed or pulled. All cars must join lineup on demand, unaided, or go to rear of that race.

9. WEIGHT: 2350 pounds with driver
Loose objects and/or weights must not be used in driver's compartment or outside of the body or hood area. Any weights added to other areas of vehicles must be securely mounted with at least two half-inch bolts, painted white and have the car number on it. No titanium, magnesium or carbon fiber products, parts or components allowed. No gun-drilled, tubular or hollow bolts or studs allowed.

10. TIRES AND WHEELS:
(A) .Hoosier Imca Tire ONLY.No Grooving orSipping is allowed. No re-caps allowed.  As a policy, Cottage Grove officials WILL NOT allow a one week grace period for cars that do not comply to the Hoosier tire rule.  Hoosier tires must be on car prior to entering track.  Hoosier A 40 tires allowed til July 1st 2008
(B) May use bead lock, on right rear only. External, steel bead lock only and it cannot make the wheel any narrower than 8 inches and no wider than 8.75 inches. Must use only steel bolts. Mud plugs allowed on right rear wheel only. Rim-mounted bleeder valves are allowed.
(C) Wheels must be of conventional 1 piece steel with a max width 8". 

11. FRAMES:
No part of race car can be lower than four inches from the ground (exception is front crossmember and oil pan).
(A) Factory production complete full 1960 or newer parallel American passenger car frames only. Frames may be cut in rear only at point not further than 36 inches from center of rear end housing. No front clips or tube type allowed. Maximum two-inch wide by four-inch tall frame stiffener may be welded directly to outside of frame rail.
(B) Frames may not be widened or narrowed and must be able to support roll cage on both sides. Must be full and complete both sides. Front crossmember must remain full and intact; center of crossmember may be notched and boxed for radiator and/or steering clearance only.
(C) No Jeep, Bronco (etc.) or four-wheel drive frames allowed. No sports car frames allowed. No front wheel drive allowed.
(D) Minimum wheel base, 108 inches, both sides. Maximum overall width (front or rear) shall not exceed 78 inches from outside of tire to outside of tire.

12. SUSPENSION AND STEERING:
(A) Front suspension and steering must be unaltered, approved OEM and be in stock location, and must be replaceable by stock parts. A minimum .625-inch rod end and steel tube may replace outer tie rod end and adjustment sleeve. Weight jack must be in original centerline of spring. Stock passenger car spindles only no fabricated spindles. Spindles can be ground for brake caliper clearance only. Aftermarket lower control arms are allowed, must be mounted in original location. Tube-type upper A-frames allowed and can be moved. Front sway bar must be approved OEM. Suspension, steering and rear end parts must be steel. Steering box must be steel approved OEM and must remain within original bolt pattern for type of frame used. No rack & pinion allowed. Steel steering shafts and knuckles only. In-cockpit steering may be modified to suit driver's taste, but must be kept on left side of cockpit. No center steering allowed.
(B) Steel coil over shocks with 5" spring allowed on rear only. No homemade coil overs used anywhere on racecar.(C) Rear of frame may be altered to accept leaf or coil springs; any coil spring must be at least 4.5 inches outside diameter. One steel coil spring per wheel only. No torsion bars allowed in rear. Progressive springs allowed only on pull or lift bar.
(D) No devices allowed that would enable driver adjustment to alter wheelbase or for weight jacking while car is in competition. No air shocks or air bags allowed.
(E) One shock per wheel only. One additional shock and spring allowed on rear suspension of vehicle. No adjustable shocks. No covers on suspension parts except clear cover on slider and a shield to protect the shocks. This shield can cover no more than the front half of the shocks. No Schrader valves allowed.

13. BRAKES:
Must have a working caliper and rotor on each wheel and must lock up all four wheels. No brake shut-off or pressure sensitive devices allowed. One proportioning device allowed, front to rear only. Brake lines must be outside frame rails and visible. Vented rotors only, no scalloped rotors. Rotors cannot be lightened. Rotors may be re-drilled for different bolt pattern or larger studs. Must be steel, approved OEM calipers, and they cannot be lightened.

14. BODIES: Body Dimensions
(A) 1970 or newer American compact passenger car only, no panel vans or station wagons. Stock appearing front windshield and rear window support unit, painted roll bars not acceptable substitute. May utilize a flat half-windshield, with no wings, mounted to the roll cage. Mirrors not allowed. Must have a minimum of three windshield bars in front of driver. Cowl panel in front of driver can be no wider than cockpit and no farther back than the steering wheel.
(B) Firewall is mandatory. Minimum .125-inch aluminum, or 16 gauge or .060-inch steel complete floor required. All body parts should be recognizable as factory production vehicle. Fiberglass or metal duplicates of body parts are permitted. Handmade body parts may be constructed of steel, aluminum, or fiberglass, but should be recognizable as factory production vehicle. Cars in competition must have a complete paint job, no reflective doors or quarter panels. No plastic body parts allowed. Body must be the same width, front to rear, and parallel to the frame.
(C) Original roofline of vehicle must be maintained. Must be fiberglass or aluminum full size roof. No wings, spoilers or any other ground effects are allowed anywhere outside or inside car. Sail panels must closely resemble examples shown on body diagram and be the same on both sides of car. Reinforcing lips on rear of sail panels must be 180-degree bends.
(D) Cars must be numbered with large legible numbers on both sides, on top and rear panel. Numbers on sides and top of car must be in contrasting color from body, be at least four inches thick and at least 20 inches high. Recommended that no holographic or reflective numbers be used.
(E) Lettering of any kind must not interfere with car numbers and must be neatly lettered.
(F) Engine compartment will remain open. No side panels. Hood sides may have maximum four-inch drop and must be enclosed at rear of hood. Maximum hood scoop height - six inches. Passenger side of body must be no further forward than rear of block.  No panel in front of right door to engine compartment. No inner panels. No car covers.
(G) Driver and passenger side windows must have at least 12-inch opening, measured at center of window, between the lowest point at the top of window, whether the roof or roll cage, and the highest point at the bottom of window, whether the interior or body.
(H)  Rear spoiler is allowed- Maximum 5", rear panel may be removed.  Car # must be visible from the rear.

15. TRANSMISSIONS:  BERT, “BRINN”, Falcon or OEM transmissions allowed.  No 5-speed trannys.
Must have at least one forward gear and one reverse, plus a neutral position. With motor running and car in a still position, driver must be able to engage car in gear and move forward, then backward. Three speed, four speed and automatic. No 'in and out' boxes, or quick-change devices allowed. Functioning shifter must be in stock location on transmissions.
(A) All manual gear-type transmissions must have a standard OEM case and must have a working disc-type clutch or approved cone-type coupler or disc-type coupler inside an explosion-proof steel bellhousing. One flywheel only, minimum 8.5-inch diameter. Diameter of clutch disc must be a minimum of 5.5 inches. The clutch assembly must be steel, except for the housing, which must be steel and/or aluminum.
Bellhousing can have only a hole for the throwout bearing lever or hose, must be 270 degrees around the top of the clutch. The flywheel must bolt to the engine between the clutch assembly and the crankshaft and all driveline components within the bellhousing must rotate while the car is in any gear. The starter must directly engage the flywheel.
(B) Automatic transmissions must remain in OEM stock appearing automatic case, with a functioning stock appearing pump. Original bellhousing must remain. Must have an approved scattershield. Scattershield may be constructed of quarter-inch by three-inch steel, 270 degrees around flexplate or flywheel.

16. BUMPERS:
Center of bumper, front and rear, must be 18 inches, plus or minus two inches, from ground.
(A) Steel bumpers must be used both front and rear at all times and securely mounted with minimum .375-inch bolts. Must be made of minimum 1.25-inch OD tubing, .065 wall thickness on front - .095 wall thickness on rear, and must be able to support car if lifted by wrecker. Two-bar front bumpers must be mounted frame end-to-frame end, no wider than the width of material outside frame horns, with the bottom loop parallel to the ground. Top bar must be directly above bottom bar, minimum 6.5 inches apart, measured center to center at front of bumper (see P in body diagram), so bumper is perpendicular to ground.
(B) Rear bumper, steel nerf bars and bodies must not extend beyond width of tires, and must not contain any sharp edges. Rear bumper no more than two inches wider than body on each side.
(C) Rear bumper must resemble one of three configurations, see diagram on page four.

17. REAR END:
Any approved OEM passenger car type or truck rear end may be used.(A) No aluminum allowed, except lowering blocks, axle cap, and drive flange. A one-inch inspection hole in center section is recommended. Full steel spool, steel mini spool or welded rear ends only. Steel axles only.
(B) No quick-change devices allowed. No cambered rear ends, one piece drive flange only. No electronic or mechanical traction control devices allowed.

18. ENGINES:
 aluminum heads allowed with 50lbs bolted in front of motor plate,No aluminum blocks or oil pans. No magnetos.
(A) Any American make engine may be used as long as rear of engine (bellhousing flange) is mounted at least 72 inches forward from the center line of rear axle. Engine offset must be kept within two inches of centerline of front crossmember with engine level. 11-inch engine height minimum from ground to front center of crankshaft.
(B) All engines used in competition must be able to be used in conventional passenger car without alterations. Motor mounts cannot be removed or altered. Castings and fittings must not be changed. No machine work on outside engine.
(C) 'Wet' oiling system only. Oil coolers must not protrude above interior. Accumulators cannot be mounted between driver and left-side door.
(D) Cooling system may be modified. Any overflow tubes must be directed to the ground, between frame rails. Radiators to be mounted in front of engine only.

NO REARVIEW MIRRORS OF ANY TYPE ALLOWED.

TECH INSPECTOR WILL HAVE FINAL DECISION ON ANY RULE IN QUESTION.

It will be policy at Cottage Grove Speedway that any car not passing class specific rule(s) at technical inspection may, upon discretion of tech official, be given a one week grace period to bring car into compliance with unmet rule(s). Grace period does not apply to tire rule, tire rule must be met before entering the track.


(BOLD RED TYPING ARE CHANGES FOR 2007)

E-mail address: thegroveracer@aol.com

Body Dimensions