Winnemucca Regional Raceway Association

Track Policies, Procedures, and General and
Specific Class Rules for Stock Car Classes
Rules as at 19 April, 2005

GENERAL STATEMENT:
The following rules, policies, specifications, and requirements have been designed to maximize safety and to afford all participants the chance to compete fairly at the Winnemucca Regional Raceway (referred to below as the Raceway; the facility). Nonetheless, racing is by its nature a dangerous activity. No express or implied warranty of safety shall result from publication of or compliance with these rules or regulations. In no way does compliance with the rules or regulations provide a guarantee against the possibility of injury or death to a participant, spectator, or official.
We have attempted to make as many as possible of the rules and regulations adopted here similar to those in force at other area tracks in order to enable cars from one area to compete at other area tracks without requiring that changes be made or expense incurred by competitors. In some instances, we have added to others’ requirements or specifications or made other rules changes where we believe the changes provide greater safety. These changes or additions may require that changes be made to cars or equipment before they may compete.
Track officials and management shall be empowered to permit reasonable and appropriate deviation from any of the specifications herein contained or to impose any further restrictions that in their opinion do not negatively impact the minimum safety requirements. Such deviations or further restrictions do not guarantee safety.
Any interpretations of, or deviation from the rules provided, or alterations or additions to the rules and requirements shall be at the sole discretion of track officials and their decisions shall be considered final. In the event of protests of outcomes of events or comments concerning findings of the technical inspectors, these protests or comments should be submitted in writing for review.
ENFORCEMENT:
Track officials shall be responsible for enforcement of the track rules and regulations at Winnemucca Regional Raceway. Track officials shall maintain the right to refuse admittance to the Raceway to any person or group at any time, and to have anyone causing interference or disturbance removed from the property.
AGE LIMITS:
All drivers must have attained the age of 15 years in order to be allowed to compete. Those without a driver’s license must provide a valid picture identification card showing clearly their date of birth. Those under the legal age of consent must also have a written form releasing the Raceway and officials from liability and giving parent’s or guardian’s consent to compete. Such forms must be signed by a parent or guardian and notarized.
No children under the age of 15 shall be allowed in the pits prior to the Drivers’ Meeting without adult supervision.
No children under the age of 15 shall be allowed in the pits after the Drivers’ Meeting, with or without adult supervision.
CONDUCT:
Remember that without fans in the stands there will be no racing, so show them respect in your conduct. Similarly, without track operating personnel and officials, there can be no racing, so treat them with respect also. Most have volunteered for their jobs, and it is through their efforts that you are able to race here.
Courteous, professional, and sportsmanlike conduct is required from all participants at all times. Profanity will not be tolerated in front of race fans, or to track officials or management.
Any fighting or physical confrontations shall subject the offender to suspension, at the discretion of track management, for a minimum of one race and up to being barred from the facility for the remainder of the racing season. Any driver, car owner, or pit crewmember that causes trouble at another car’s pit area shall be suspended as well.
All drivers are considered to be responsible for not only their own actions but also for the actions of their car owners, pit crewmembers, and pit guests while at the facility. Drivers risk, at a minimum, disqualification and forfeiture of all monies, points, and/or trophies for the day’s race events in the event of incidents related to any such individuals.
Remember that we are representing not just the Raceway but also our community to visiting participants and spectators. Make it proud!
Any protests, complaints, or suggestions should be put in writing and submitted to track management promptly for consideration.

We want, with your help, to operate the best and friendliest racing facility around!

Winnemucca Regional Raceway Association
General Stock Car Class Rules

REGISTRATION AND ADMISSION PROCEDURES:
Upon paying the entry and pit fees at the pit entry gate and signing waivers of liability you will be given a wristband that must be worn at all times in the pits or on the track. The wristband must also be available to be shown to the track officials at the Turn 4 staging lane each time you enter the track.
After signing in and getting your wristband, proceed directly to a pit stall and unload your vehicle. Pit stalls are open on a “first come, first served” basis. Try to occupy your pit in an orderly fashion so as not to obstruct others.

TECHNICAL INSPECTION:
Prior to competing or being allowed to enter the racetrack, all cars and all drivers’ safety equipment shall undergo a preliminary safety and technical inspection by track officials. This inspection shall be performed only with the car off the trailer or transporter, and the driver must accompany the vehicle during the inspection.
All safety equipment shall be in the vehicle at the time of inspection. If in the judgment of the inspector, any car or drivers’ equipment fails to pass the preliminary SAFETY inspection, there is NO “GRACE RACE ALLOWED. A vehicle that passes technical inspection for safety related matters, but is technically otherwise not legal for a particular class is entitled to one “grace” race, at the discretion of track officials. A technical inspector has the right to change the classification of any vehicle after inspection.

REGISTRATION AND ADMISSION PROCEDURES:
Attendance at the drivers’ meeting is mandatory for all drivers and crewmembers. After drivers’ meeting, the heat race line-ups will be posted in back of the pit stands. Drivers should move their car to the staging area near the track entrance and line up as required.
As race time approaches, track officials will check the lineup of cars at the staging area near the track entry, but you should know your lineup position and be in place in order to move things along quickly. All races must start promptly and progress smoothly.
In general, as one race finishes and those cars leave the track, the cars for the following event should be starting onto the track as soon as directed by the officials. The crowd is not here because they wonder what might be going to happen next, they are here because they want to watch racing.

WEIGHT CHECKING (NEW THIS YEAR):
Following completion of their respective main events, the top four finishers in each division shall proceed directly to the designated scale pad WITHOUT contact with crewmembers or others, or visiting their pits to be weighed. Cars will be pushed on and off the scales by hand, and only the driver and officials shall be involved. Failure to follow these procedures will result in disqualification and forfeiture.

GENERAL PIT RULES:
Consumption of alcoholic beverages by drivers, crewmembers, or pit spectators is not permitted prior to or during competition events at the facility.
Use, distribution, or sale of illegal drugs at ANY TIME shall be cause for immediate suspension and authorities will be immediately notified. The duration of such suspension is at the discretion of Raceway management.
No driver will be allowed to race if he/she is under the care of a doctor. If a driver has been under a doctor’s care, he/she MUST furnish the Raceway management with a written release signed by a doctor before being allowed to compete.
The Raceway management may require any participant to undergo a physical examination prior to competing in any event.
The pits are an area used by all competitors. All competitors should do their part to keep the pit area clean during and after races.
Remember, at all times, the pit speed limit is 5 miles per hour.

CAR REPAIRS AND ACCIDENTS:
Cars may be worked on in the pits at any time. Repairs may NEVER be made on the racing surface or in the infield.
Crewmembers are not allowed on the track or infield at any time without permission from a track official, even in event of accident or injury. If an accident disables a competitor’s car, he/she may move to a place of safety in the infield. In general though, when involved in an accident, unless there is a fire, drivers should stay in their car with their helmet on and window nets and harnesses fastened until signaled by track officials. Other cars may still be racing or wrecking!

INJURY POLICY:
Any injury incurred at the raceway by any driver, owner, mechanic, spectator or official must be reported immediately with victim’s pit pass displayed to the track manager or pit stewards. All such accidents must be reported, no matter how minor they may seem.
If the accident victim has been transported to a hospital, he/she must have a signed doctor’s release before being allowed to return to driving or to enter the pit area.

CAR APPEARANCE; PAINT, AND NUMBERS:
A. All drivers, owners, and crew should take pride in the appearance of their car. Cars that do not meet a minimum quality appearance may be barred from competing by track officials.
B. All cars must be neatly painted.
C. Cars must be clean when entering the pits to “tech-in” for an event.
D. Numbers must be on both car doors and the roof and must be at least 20-inches tall and 3-inches wide.
E. Numbers must be in contrasting color to the color of the car so as to be easily distinguished by scorers.
F. Only “arabic” numbers are allowed (ordinary numbers, such as 4, 88, 16 etc; no roman numerals, numbers spelled out in text, or the like). One or two uppercase letters may be used in addition to the numerals in the event that two cars appear for an event with the same number. In such cases, the “local” (WRRA member’s) car, or the car of the first member to have requested that number when paying the year’s dues to join WRRA, shall be entitled to use the preferred number; the other car must change their number to prevent duplication.
G. The total length of the number (and letter combination if present) shall not exceed three digits and the letter/s if used should be one-half the number’s height (e.g. 7JP, 32x, 125).
H. The roof number must be oriented so as to appear right-side-up to scorers located on the outside of the track.
I. All letters and numbers must be instantly recognizable, and failure to score laps for a car owing to scorers’ inability to discern car numbers is at driver’s risk.
J. No gold or silver or other metallic paint or reflective tape numbers are allowed due to the difficulty in reading them.
K. If numbers are painted by spray-cans, they must be stenciled or outlined so as to provide crisp edges.
L. Driver’s name should appear on the roof above the door but this is not mandatory.

Winnemucca Regional Raceway Association

VEHICLE SAFETY: all classes (See also individual class rules):

A. ROLL CAGES
1. All roll cages must be constructed from minimum thickness of 1.5-inch or greater outside diameter, 0.095-inch wall thickness ERW or DOM mild steel tubing (no water pipe, no exhaust tubing are allowed). Tubing with a 0.095-inch wall thickness and an outside diameter of 1.75 inches is strongly recommended for pure stock and pro-stock classes.
2. Track management reserves the right to drill a 1/8-inch diameter hole at a point of management’s choosing in the car’s main cage at any time in order to verify tubing specifications.
3. The roll cage must be mounted, by welding, at no less than 6 points to vehicle frame or on 3/16 inch or thicker mild steel plates with an area of 36 square inches or greater (i.e. 6” by 6”, 4” by 9”, etc.) welded to sub-frame for uni-body vehicles as dictated by specific vehicle configuration. All such roll cage attachment points must have at least one welded gusset. Additional foot protection is strongly recommended for driver’s safety.
4. A securely welded horizontal bar is required behind the driver’s, and where applicable the passenger’s seat, just below shoulder level, that shall prevent the seat-back, or other relatively less strong materials, from absorbing stress transferred downward from the harness straps in the event of a hard wreck. Adequacy of such bar is subject to technical inspector’s discretion.
5. Only stick, mig or tig welds are allowed; no soldered or brazed joints, or threaded fittings are allowable for cage construction.
6. Roll cage hoops must be continuous, no splices.
7. All cages must have at least one halo bar within the top hoop.
8. Offset cages are not allowed.
9. Driver’s door bars must include a minimum of 3 horizontal and 2 vertical bars of cage-specification material, and their joints must be gusseted. Upper horizontal door bar must be within 8 inches of bottom of original window opening. In classes allowing a passenger, all drivers-side specifications must be met on passenger side also.
10. Non-passenger class cars may use 2 horizontal and one vertical door bar, or x-bars.
11. Mild steel plate of 18 gauge or thicker must be securely attached to, and cover the exterior of the driver’s side door bars.

B. DRIVERS’ UNIFORMS
1. SFI-approved fire-resistant driving suit, gloves, and neck braces are mandatory for all competitors.
2. SFI-approved shoes and socks are strongly recommended; substantial leather shoes are allowable (no sandals, etc.).
3. SFI-approved ‘head-socks’, to be worn beneath helmets, are strongly recommended.

C. SEATS
1. All vehicles, except Gen-X class cars, must use aluminum racing-type seat(s); side bolsters are recommended.
2. Seats must be securely attached to roll cage, subject to technical inspectors’ discretion.
3. Seat covers and padding must be made of fire retardant material.
4. Seats must have head support.

D. HELMETS
1. Snell 95 SA-rated helmet or newer is required; M-rated helmets may be used ONLY in non-IMCA classes, and ONLY if the driver also wears an SFI-rated Nomex head sock. (WRRA will have a limited number of these head-socks available to loan out on a first-come, first-served basis for ONE use only. Failure to wear such a head-sock with M-rated helmets subsequently will result in disqualification).
2. All helmets and hardware must be in good condition regardless of date of manufacture. Only full-face type helmets with face shield will be allowed. Nomex head-socks are recommended for drivers using SA-rated helmets also.
2. Chin-strap and fastener must be in good condition and functional.
3. Helmet must not be cracked anywhere.
4. Helmet and all other safety equipment must be worn at all times vehicle is on the track and must be present in car when it undergoes technical inspection. NO EXCEPTIONS.

E. BELTS/HARNESSES
1. Five-point, three-inch minimum width (minimum 2-inch anti-submarine belt), SFI-approved seat belts are mandatory.
2. All belts must be roll-bar mounted or be secured with OEM hardware. Grade-8 bolts of 3/8-inch or larger diameter, with either self-locking nuts or nuts with lock-washers are mandatory for mounting. Also, see Item above (Item 4, under ‘A. Roll Cages’) for additional mounting requirements.
3. No worn, frayed, or sun-rotted belts will be allowed. Tattered fibers, non-functional clasps, or insufficient mounting points will cause vehicle to fail technical inspection.

F. WINDOW NETS
1. Window net must be mounted so latch is at top left corner, as seen from outside vehicle facing window, and must be easily accessible from outside.
2. Webbed window netting or screen-type window netting only; minimum size of 16 inches by 20 inches (no string-type nets allowed).
3. Classes allowing a passenger must have approved type netting mounted on passenger side as well as driver’s side.

G. FIRE SAFETY
1. All competing vehicles must have, at a minimum, a fully charged 2½-pound dry chemical, Class ABC fire extinguisher that is securely mounted and within easy reach of the driver while he/she is strapped into seat. Extinguisher must not be wired or ‘zip-tied’ to mounting point, and must be readily removable from mount. Recommend that car number be painted on the extinguisher.
2. All race teams must have, at a minimum, a similar, fully charged fire extinguisher in the pits that is attached to the car trailer or the rear of the tow vehicle. Recommend that car number be painted on the extinguisher.
3. Fire extinguishers must be readily visible and easily removed for use.
4. A functional, clearly labeled kill-switch must be securely mounted within reach of the driver when he/she is strapped into the seat.
5. The kill-switch must also be readily visible, legible, and accessible to track officials standing outside the car.
6. Any vehicle using an electrical fuel pump must have a functional inertia switch that will interrupt power to the pump in the event of a rollover.
7. All exhaust systems must exit outside the driver’s compartment and vehicle’s bodywork.
8. All flammable materials must be removed from the vehicle including, but not limited to, sound-deadening materials, insulation, plastic interior trim, etc.
9. Only one battery is allowed, and it must be held down with 2-inch by ¼-inch mild steel strap.

H. FUEL SYSTEMS
1. All vehicles in all classes except Gen-X (see those rules) must have a racing fuel cell.
2. Fuel cells must be mounted by at least 2-each, 2-inch by ¼-inch thick mild steel straps completely surrounding the cell. An 18-gauge steel cover over the fuel cell is strongly recommended.
3. The fuel cell must be fuel-tight, be capable of being securely closed, and have a functional rollover valve to stop fuel leakage in the event of a rollover.
4. The fuel pickup from the cell must not be the lowest point on the vehicle. Bottom-mounted pickup lines are not allowed, and no portion of the fuel line must touch the ground. A minimum fuel cell-to-ground clearance of 10-inches is mandatory.
5. Minimal use of non-reinforced rubber fuel line hose is strongly recommended.
6. Only metal fuel filters are allowable; no plastic or glass fuel filters may be used.
7. Only pump gasoline, sanctioned class-specific fuels (one example would be methanol for IMCA modifieds), or commercially available racing gasoline are allowed.
8. No additives such as nitro-methane, propylene oxide or any other oxygenating compounds, or any means of pressurized induction are permitted.

I. DRIVER’S COMPARTMENT
1. The driver’s compartment must be sealed from the engine and fuel cell by the stock firewall or for Modified-Mini or Pro-Stock classes ONLY a new one may be constructed of 18-gauge or heavier steel. In any case, every effort must be made to minimize the number and sizes of any required openings in firewalls.
2. Any fuel line or other liquid line passing through the interior of the driver’s compartment shall be contained in double-walled steel and securely fastened so as to protect the driver from any possible leakage or fire.
3. We strongly discourage mounting of the battery in the driver’s compartment. If it is mounted there, it must be within a container that will prevent spilled acid in the event of a possible rollover or hard impact from reaching the driver.
4. A “windshield bar” and steel mesh screen capable of supporting a minimum weight of 150 pounds must replace the windshield. Using cage-specification material and making the support bar an integral part of the cage is strongly recommended.
5. No loose objects are allowed in the driver’s compartment.
6. No side or rearview mirrors of any kind are allowed in any class.

J. DRIVESHAFT
1. A driveshaft hoop must completely encircle the driveshaft behind the front universal joint and within the front ? of the driveshaft.
2. The driveshaft hoop must be constructed of 2-inch by ¼ inch minimum, mild steel and must be securely mounted to the vehicle so as to be capable of retaining the driveshaft in the event of failure of the universal joint or other problem.
3. The driveshaft must be painted white and kept clean for easier visibility in the event of loss on the track.

K. OTHER MECHANICAL SPECIFICATIONS
1. Transmission blankets or scatter shields are mandatory.
2, All transmissions must have a 1-inch hole in the bell housing to enable visual inspection of the clutch, flywheel, or torque converter. If the components are not visible, the vehicle may be declared ineligible to compete.
3. Radiator must be mounted in front of the engine; no rear-mounted radiators will be allowed.
4. One continuous hoop no larger in diameter than the roll cage may be used to support the radiator.
5. Vehicles must not leak fluids. Catch cans or other reservoirs are strongly recommended
6. Wheel studs must protrude from lug nuts with threads showing.
7. Two front and two rear tow loops are required; these must be securely attached to frame of all vehicles.
8. Homemade or modified spindles are prohibited.

L. BODYWORK AND BUMPERS
1. All doors must be securely attached to vehicle
2. All hoods and deck lids must be securely fastened; hood pins are preferred.
3. Bumpers must terminate smoothly into the body at their ends, or must have substantial, smooth-surfaced straps secured from the bumper ends to the bodywork.
4. No sharp exterior edges are allowed anywhere on the vehicle.
5. Side nerf-bars for classes where allowed may extend up to a maximum of 2-inches from the bodywork. Ends must be tapered so as to be longest on the body side, shortest on the outside.

M. TIRE RULES
1. Tires and tire types that are allowed, or required to be used vary by car class and are specified in the individual class rules. In NO class is the use of tire-softening chemicals of any kind or description permitted.

Winnemucca Regional Raceway Association
Modified Mini-stock class rules (see also General rules)
A. Vehicle description
1. Must be a rear-wheel drive, factory produced, compact sedan, coupe, or light truck.
2. No all-wheel drive or front-wheel drive configurations allowed.
3. No mid-engine or rear-engine vehicles allowed.
4. Car must weigh one pound per cc displacement.

B. Body and Frame
1. Body must be steel and must clearly resemble the production vehicle body.
2. Plastic or fiberglass nose section allowed.
3. Must retain 1-foot section of original stock “A-pillar” windshield post.
4. Tube frames must use stock front and rear sub-frames (stubs).
5. Frame or sub-frames (stubs) must match suspension used.
6. Suspension may be moved as long as factory components are unmodified.
7. Pickup bodies must have a tonneau cover over bed area.
8. Weight-jacks are allowed.
9. Any type shock absorbers, including coil-overs, may be used.
10. Differential must be semi-floating type, and quick-change type rears are not allowed.
11. Brakes are open; spindles must be O.E.M.
12. Heim joints are permitted only in steering, panhard bar, and shock absorber mounts.

C. Engine
1. In-line, single-camshaft, 4-cylinder engines only.
2. Engine displacement must not exceed 2,600 cubic centimeters.
3. No purpose-built race engines, such as Cosworth, Indy, etc.
4. Esslinger-Ford Motorsports aluminum heads for 2.3-liter Pinto/Mustang are allowed but this rule, as all others, will be monitored during the season and is subject to change, if deemed appropriate by the WRRA Rules Committee.
4. Engine and transmission brand must match (e.g. Toyota engine with Toyota transmission; Ford engine with Ford transmission).
5. Engine setbacks allowed, but front spark plug must be not more than 3 inches behind spindle centerline.
6. Single-disc, stock-appearing clutch only; no Ram couplers, etc. allowed.
7. No aluminum flywheels unless factory “stock”.
8. Car must weigh at least 1 pound/cubic centimeter of engine displacement, less driver.
9. No titanium allowed anywhere in the valve train.
10. Connecting rods must be ferrous.
11. One, 2-barrel, downdraft carburetor only. Must flow less than 501 c.f.m.
12. No magneto or crank-trigger ignitions.
13. No dry-sump oiling systems.

D. Tires and Wheels
1. Tires must be DOT radials.
2. No racing or other re-treads are allowed.
3. Tread wear rating must be visible on outside of tire, and must be greater than 100; durometer reading must be greater than 56.
4. Tread width measured across the top of the tire cannot exceed 8½ inches.
5. Grooving and siping of tires is permitted.
6. Unacceptable tires include, but are not limited to, Dirt Bozz, A008, R-1, and others.
7. Any reinforced stock steel wheel or racing-type steel wheel may be used.
8. Wheel spacers must have a thickness not to exceed 1-inch.
9. Bead-locks are not allowed.

Winnemucca Regional Raceway Association
Pro-Stock Class Rules (see also General rules)

A. Engine
1. Engine must be same make as body.
2. Forward-most spark plug shall be no further back than a line connecting upper front ball-joints.
3. O.E.M. heads and block; must be made of cast iron. No aluminum allowed.
4. Tubular steel headers are allowed, but exhaust must exit behind driver, under the car and safely. “Zoomie”, and cross-over 180° headers are not allowed. Mufflers are required; may be made of aluminum.
5. Single-plane intake manifolds are allowed.
6. Engines must use factory motor-mount brackets with solid engine mounts. Accessories can be changed. No mid-plates or front-plates allowed.
7. Electronic ignitions are allowed.
8. Carburetors with Maximum 800 c.f.m. flow are allowed. Exotic carburetors including, but not limited to Dominators, Predators, etc. are not allowed; fuel injection is not allowed.
9. No dry-sump oiling systems are allowed.
10. Minor radiator protection is allowed, and must be made of same material used for roll cage.
11. All cars are subject to inspection at any time and the inspection may require the removal of some components.

B. Transmissions
1. No competition transmissions are allowed.
2. O.E.M.-type single-disk clutches only; no Ram-type couplers are allowed.
3. All automatic transmissions must retain functional torque converter.
4. No aluminum flywheels are allowed.

C. Body and Suspension
1. Minimum allowable wheelbase is 107-inches.
2. Minimum car weight is 3,000 pounds (with driver, after main event).
3. Steel and aluminum after-market bodies allowed, subject to tech approval. Plastic nose and tail clips allowed. No fiberglass bodies allowed, and the general style of all bodies must replicate O.E.M. body shapes.
4. No wedge-style bodies are allowed.
5. Spoilers are allowed, with maximum height of 5-inches; no wings, wrap-around spoilers, or side-plates.
6. Frame or sub-frame must match body type (e.g. GM-to-GM, Ford-to-Ford, etc, except that pickup truck bodies can use any full-perimeter frame.
7. Driver must sit within 1-foot of original position, and cannot be sitting atop driveline.
8. Front and rear suspension, and frame must match and be complete. If subframe connector is used in mid-body area to connect front and rear subframes, complete stock front and rear suspensions must still be used.
9. Suspension must be O.E.M., but attachment points may be modified and heim joints are allowed in steering, panhard bars, and shock absorbers.
10. Suspension mounting points may be changed as long as factory components are not modified.
11. Spindles, rotors, and calipers must be O.E.M. and of the same make as the frame.
12. Racing shock absorbers can be used and mounts moved, but coil-over shock absorbers are not allowed.
13. Suspension bushings must be O.E.M. size.
14. Lower control arms must be O.E.M. for the suspension used; tubular upper members allowed.
15. Rear axles may be full-floating, but no cambered axles allowed. Ford 9-inch rear axles allowed.
16. No cambered axles, quick-change rear gears, or aluminum or other lightweight axle housings.
17. Steering quickeners are allowed.

D. Tires and Wheels
1. Approved track tire is any racing re-treaded carcass, with a minimum 66-hardness compound. No Hoosier Dirt Boss allowed. Note: Sources will be made known before the season starts, but this tire is required for the class.
2.Grooving and siping are allowed; bleeder valves are allowed.
3. Any racing-type steel wheel allowed, but bead-locks are allowed on right rear wheel only.
4. No spacers with a thickness greater than 1-inch are allowed.
5. Wheel stud threads must protrude from lug nuts.

Winnemucca Regional Raceway Association
Pure-Stock Class Rules (see also General rules)
A. Engine
1. Engine must have cast iron block, heads, intake, and exhaust manifolds.
2. Hydraulic factory cams allowed only; must have smooth idle at 800 rpm.
3. No solid, flat-tappet roller cams allowed.
4. Front engine, rear wheel drive mandatory.
5. Maximum compression ratio 9.3:1
7. Combustion chamber volume must be at least 67 cubic centimeters; no “fuelies”, “4V”, or “W-2” heads are allowed.
8. No porting or bowl work allowed. No domed pistons allowed.
9. Two-barrel carburetors, O.E.M. type, 500-c.f.m. flow maximum. Non-original carburetor for manufacturer is allowed; 4412 Holley carburetors are NOT allowed.
10. Four-barrel carburetors are not allowed.
11. All cars subject to inspection at any time, and may require the removal of some components.

B. Transmission and driveline
1. Factory transmissions only.
2. Factory torque converter must be functional.
3. May change rear axle ratio, but must not be higher numerically than 4.11:1.
4. Must have open spider gears; NO limited-slips, mini-spools, spools, welded spiders, Detroit Lockers, Posi-trac, shimming, etc. allowed. Will be inspected by jacking up one rear wheel.
5. Ford 9-inch rear axles are allowed, but rear suspension must remain unchanged from stock.

C. Body and suspension
1. Front hoop is allowed for safety.
2. Minimum 107½-inch wheelbase.
3. Steel-bodied cars only; no convertibles, t-tops, or sunroofs allowed.
4. Entire body must remain factory stock appearance and materials; no after-market fenders, hoods, doors, bumpers, clips, etc. allowed. After-market nose is allowed.
5. Body must replicate showroom original shape and appearance.
6. Doors may be skinned to allow fitting roll cage.
7. No ballast is allowed.
8. Front inner fenders may be removed if not required by suspension.
9. Uni-body cars may use subframe connector to tie front and rear suspensions.
10. Suspension, steering, and brakes must be original equipment.
11. Replacement parts made to O.E.M. specifications are allowed.
12. Alignment changes are allowed as long as components are not modified.
13. No updates, backdates, options, etc. are allowed; the car must appear mechanically and cosmetically as it did coming out of the factory.
14. Fender openings may be trimmed one-inch from the original lip for tire clearance.
15. Car weight with driver minimum 3,400 pounds.

D. Tires and wheels
1. DOT radials only; must be passenger-car type.
2. No retreads or bias-ply tires. Tread must remain original; no grooving, siping, or snow tires are allowed. Tread width measured across top of tire must not exceed 7-inches.
3. Tread-wear rating must be plainly visible on the outside of the tire, and must be greater than 250, also subject to minimum durometer reading.
4. Tires must not protrude beyond body.
5. White spoke-type steel wheels or reinforced-center stock steel wheels are allowed.
6. Brakes must be functional on all four wheels and no after-market proportioning valves are allowed.
7. All four tires must be of the same size; e.g. P205/75R15 (or other) on all four corners.

Winnemucca Regional Raceway Association
Gen-X class rules (see also General rules)
Gen-X is a relatively new class being introduced and is quickly becoming popular across the entire country as an attempt to keep the cost of having a competitive vehicle low and to get new racers started in the sport.

A. Vehicle description
Car must be a 1980 or newer, front-engine and front-wheel drive, factory produced, 4 or 6-cylinder compact sedan or coupe. Maximum engine size allowed will be 3.8 liters. No mid-engine or rear-engine vehicles allowed.

B. Safety
1. Minimum 4-point roll cage must surround driver, and must be securely welded to car’s subframe or frame.
2. A minimum of 3 horizontal door bars, with at least two additional vertical supports, must be on the driver’s side.
3. 1¼-inch (inside diameter) black steel pipe may be used; no galvanized material or exhaust tubing is allowed. Standard roll cage tubing as used in other classes is STRONGLY recommended. Cage must be welded and gusseted at corners; no threaded connections, no brazing/soldering allowed. No inter-member welds allowed for splicing tubes.
4. Halo bar and windshield bar required for all cars; no exceptions.
5. Stock high-backed seats may be used. Aluminum racing-type seats are STRONGLY recommended.
6. All seats must be properly mounted to a secure seat subframe that is welded to roll cage.
7. Stock-type seats must have added head protection securely fastened to roll cage.
8. Minimum 5-point racing type harnesses required. All belts including anti-submarine belt must be mounted to seat subframe that is welded to cage, or to the cage itself.
9. Stock-type fuel tanks may be used, but must be mounted safely away from the exterior of the vehicle, and the driver’s compartment must be shielded from possible flames or leakage of gasoline by minimum 18-gauge steel rear firewall.
10. Any electrical fuel pump-equipped vehicle must have a roll-over safety switch installed that will disconnect current to the pump in event of roll-over.

C. Engine
1. Engine must be in-line, 4-cylinder, or V-6 with all original specifications for the car used, and SHALL be absolutely O.E.M. “BONE” stock. Only one camshaft per cylinder head, and two valves per cylinder are allowed; no rotaries. SIngle overhead camshafts (per cylinder head) are allowed. Continued legality of six-cylinder cars in the class will be reviewed at end of season.
2. Maximum displacement 3,000 cubic centimeters, absolutely no stroker crankshafts allowed.
3. Carburetor may be changed within make of vehicle; air cleaner may be replaced and emissions control system may be removed. Exhaust system aft of stock manifold may be changed.
4. The only after-market parts allowed are EXACT replicas of O.E.M parts replaced.
5. The following are expressly forbidden, even if they were available from the factory for the vehicle/engine combination: dual overhead camshafts, turbochargers, or other forced induction systems.
6. Pump gasoline only may be used.
7. Stock ignitions, engine control modules, and computers if so equipped originally by the manufacturer must be retained in functional operation and be unmodified.
8. Maximum compression at cranking speed is 150 pounds per square inch unless the factory service manual for the specific car and engine clearly states a higher number. The racer must provide such manual for proof to the Director of Competition’s satisfaction at the time of initial technical inspection before being allowed to compete.
9. Engines must idle smoothly at factory-specified idle speed (or 800 rpm if factory specification is not known).
10. Cars are subject to additional inspection at any time, and components may need to be removed to verify compliance with rules.

D. Body and Suspension
1. Vehicle must appear stock.
2. Doors may be gutted or skinned to allow clearance for roll cage.
3. All interior trim, glass, and flammable materials must be removed.
4. Body must be O.E.M. type and not reinforced.
5. Stock suspension may be reinforced but must remain in original mounting position.
6. Stock frame or unit body/subframes may be reinforced between front and rear suspension.
7. Alignment may be changed, but components may not be modified.
8. No racing shocks are allowed; must be stock.
9. Open differential only.
10. No ballast allowed.
11. Operating AM/FM radio may be required in vehicles, to be playing at loud level during races (at spectators’ discretion following show-of-handsvote to be conducted by flagger).

E. Tires and Wheels
1. Steel wheels only.
2. Tires must be passenger-car type, with tread wear rating visible from the outside. Wear rating must be 250 or greater, and is subject to durometer reading.
3. Maximum tread width is 7-inches measured across the top of tire.
4. No retreads.
5. Tires must not extend outside bodyline when viewed from behind car.
6. No grooving, siping, studding, etc. allowed.