The Super Mini class is open to any driver 16 years of age or older. Anyone entering the pit area under the age of 18 requires a liability waiver signed by their parents.
It is the responsibility of the driver to provide proof that their car is legal. If tech officials suspect a violation, the driver must prove the part in question is in fact within the rules. NOT the other way around. REMEMBER just because these rules don’t say you can’t , doesn’t mean you can. Ask a tech official before you make any modifications.
Competing Models:
Open to American or foreign vehicles originally available with a four cylinder engine.
104” manufactures advertised wheel base or less
No convertibles, Roadsters, or pick ups.
Weights:
Carbureted cars 2150 lb minimum weight
Fuel injected cars 2350 lb minimum weight
Engines:
Only standard production 4 cylinder engine for make allowed. (Ford to Ford, Honda to Honda and etc.)
No rotary engines allowed
Maximum 2400cc original displacement engine size. Maximum of 2600cc after modifications.
OEM engine blocks only. Modifications allowed.
Internal parts: Modifications allowed. Aftermarket allowed.
Stock Stroke crankshafts only. No stroked or offset ground cranks.
Water is the only coolant allowed. Water wetter is OK. No antifreeze.
Must have a approved catch can or overflow tank. Cannot be mounted in drivers compartment.
Cylinder Heads:
Cylinder head must be OEM to make of car.
No aftermarket racing heads allowed. ( ie Yates, Ford Motor sports, Cosworth etc.
Porting and polishing allowed
Four valve heads only allowed on correct cc engine as per factory.
Any aftermarket or OEM valve train components allowed
Intake Manifolds
Modifications, aftermarket and adapters allowed.
Fuel System:
Carburetor: Any 2-barrel carb is allowed. 500 cfm maximum.
Choke horn can be removed.
Must have 2 carb return springs
Air cleaners are mandatory at all times
Fuel injection allowed
Must be for make and model of engine. No swapping of fuel injection systems from other engine families. Must be stock OEM, including throttle body, fuel rails, injectors, sensors and wiring for that specific engine. Computers may have provisions for adjustability. NO aftermarket ECUs
Gasoline only. No methanol or exotic fuels of any kind.
All Fuel lines that run through the drivers compartment must be steel or rubber enclosed in iron pipe. Pipe must extend thru the front and rear firewalls.
Fuel cell is mandatory and must be mounted in the trunk area in a safe and secure manner.
Electric fuel pumps allowed. Must have a oil pressure shut down switch wired in.
NO aluminum fuel cells or tanks
Maximum 12 gallon fuel cell capacity.
NO glass or plastic fuel filters allowed
Electrical:
Must have a working starter at all times.
Crank triggered ignitions allowed.
No in car adjustable ignition timing allowed
No Magnetos
After market distributors allowed
MSD boxes allowed
Alternator optional
Battery must be moved behind the drivers seat. It must be mounted securely and covered.
A master disconnect switch that disconnects all power to all electrical components must be installed. It must be located behind the drivers seat. Easily accessible from the outside of the car. Window net must not block access.
Exhaust:
Mufflers required at all times
Any exhaust system routed through the car must be covered in a neat and safe manner. Subject to tech approval.
Must be securely mounted.
Exhaust must extend behind the driver and exit outside of car.
Headers are allowed.
Transmission and Drive shafts:
OEM standard for make. Adapters allowed
Must have working first and reverse gears.
Scatter shield mandatory, .25 steel or approved blanket /belting. Subject to tech.
Starter mounting position must remain same as stock.
Front wheel drive vehicles may not use posi-traction or limited-slip differentials
Driveline must be stock production for make.
Must have two 360 degree straps fastened to the floor. Located within 12” of each end of the drive shaft.
Driveline must be painted white.
Flywheel: Any factory or performance allowed. Lightening allowed
Clutch: Any clutch allowed. Must function correctly.
Frames:
Original frame rails required. NO lightening. May be reinforced.
Front frame rails from the highest point of the frame may be replaced with box tubing. Must be at least the same thickness of factory frame. Must be installed as close to manufactures location as possible. All front suspension, cross member, brackets etc. must be in stock location. (the intent of this rule is to allow damaged cars to be repaired. NOT as a performance upgrade)
Front and rear firewalls made from a minimum of 20 gauge sheet steel.
Drivers side floor pan must be complete front to rear of car. Center hump must be complete. Passenger side can be removed but drivers compartment must be cockpitted.
Suspension and Steering:
Must be per manufacturer
Reinforcing allowed.
May be lowered
Coil-overs allowed
Car must have original style springs.(ie leaf, coil. Etc.)
Weight jacks, screw jacks and adjustable sleeves allowed.
Sway bars optional. One piece bars only.
Spindles and/or steering knuckles must be OEM or direct replacement. Aftermarket allowed.
Control arms: Modifications and aftermarket allowed
Shocks and or struts must be: Steel or Aluminum body allowed. Aluminum bodied must non-adjustable. (heavy duty allowed), Similar to OEM (may be adjustable), Mounts may be extended for travel. Not allowed to protrude through body.
Pan hard bar allowed. May be adjustable.
Wheelbase must be within 1” plus or minus of stock.
Steering racks or boxes may not be moved or repositioned from stock OEM location.
Center of steering wheel must be padded.
Bodies and Chassis:
Roll Cage: Full Nascar style roll cage constructed of 1 ¾” .095 wall tubing. 1 ½” .095 allowed on previously built cars.
Minimum 3 drivers door bars with 2 bends. Minimum 2 passenger door bars with 2 bends.
All main cage joints and drivers side door bars must be gusseted.
All cars must have a steel plate securely welded onto or between the drivers door bars. Minimum of .125 thick.
All cars must have a window net on the drivers side. Must be securely fastened.
Bodies: Must have complete bodies, fenders and bumpers. Car expected to be of good condition and appearance. No cars will be allowed to run the next race date missing fenders or bumpers lost in a previous competition.
All flammable materials must be removed from interior.
All lamps and glass (excluding windshield) must be removed. Loose glass must be removed out of crevices.
No fiberglass except hood or 1 ½” tall hood scoop. Hood is required. Steel hoods may be lightened
Hood and deck lid must use hood pins to secure.
Side skirts (rocker panels) and air dams allowed. Front and rear spoilers allowed. Must be securely fastened.
Rear spoilers may not protrude farther the outermost edge of the bumper. Spoilers cannot be wider that the width of the mounting surface and cannot impair rear vision. Maximum height of 7”.
Sunroofs must be removed and covered with minimum 20 gauge steel. NO aluminum
Door skins may be steel or aluminum but must be stock appearing and securely fastened.
All bodies must be installed on frame as per manufacturer and in stock location.
Bumpers: aftermarket allowed. No extreme bumpers. Subject to tech approval. Bumpers cannot extend outside of body lines.
Side nerf bars are allowed.
A windshield is mandatory. Must have two upright braces located in the center of the car extending from dash height to roof line. Must be mounted in original position and within windshield cavity. 1/8” minimum Lexan is approved. Must be securely riveted in.
Windshield must be securely mounted with four safety clips. Two on top and two on the bottom.
Mirrors must be mounted within the body lines of the car
Numbers: All cars must have legible numbers on Doors and roof. 18” minimum height for door markings and 24” minimum on roof. Roof Numbers must face the scoring tower. (Right side up. Standing on the passenger side of the car and looking across the roof.
Commercially available aluminum racing seats are mandatory. NO homemade seats.
Seat must be securely attached to the roll cage.
Padded rib protection and seat leg extensions are recommended
Quick release commercially available 5 point racing harness is required. Must not be more than 6 years old. Must be securely attached to the roll cage.
Tires, wheels and brakes:
All cars must have four wheel brakes in operating condition. Titlton style dual master cylinder with brake bias allowed. One proportioning valve per car.
Rotors must be stock. NO home drilled rotors.
Must run open lug nuts. NO acorn style lug nuts.
Maximum eight inch wheel width. Minimum three inch backspacing measured on the backside of the wheel.
Must be a one piece steel or tech approved aluminum wheel
No wheel spacers between wheel and hub
Track tire to be determined
SAFETY
All cars must carry a fully charged 2 ¾ lb ABC dry chemical fire extinguisher or have a fire suppression system.
Extinguisher must be securely mounted within reach of the driver while belted in. No duct tape holding extinguishers in place.
All pits also must have a ABC dry chemical fire extinguisher in plain view at all times.
CMS recommends everyone in the pits wears full length pants and long sleeve shirts. Absolutely no open-toed shoes or sandals allowed in pits. CMS recommends light colored highly visible colors for all people in the pits.
Helmets: Must be Snell 95 or newer with no visible damage. Subject to tech approval.
Padding required on all roll cage bars that the driver can make contact with.
2” padding required in the center of the steering wheel.
SFI approved racing suit is required. Must be in good condition. No rips or broken zippers
SFI approved window net is required. Must be in good condition and securely mounted.
