MICKEY THOMPSON TOP SPORTSMAN

The premier place for sportsman racing, where these drivers have it all: reaction times, dial-ins and killer ETs and speeds!

Purse for this class is $7,950/event and broken down as follows:

Winner: $2,500

Runner Up: $1,250

Semi: $500

Quarter: $300

2nd Round Loser: $250

DESIGNATION: T/S or Top Sportsman followed by car number. Numbers must be at least 4” tall and on both side windows, upper left of rear window and upper right of windshield. Dial-In must be clearly visible from Race Control and on both sides of the car.

FIELD: 32 car qualified field based on elapsed time.

TREE: .500 Full Tree, no blinders and crosstalk enabled.

DIAL-IN: Maximum dial-in 1 (one) tenth of a second slower (+0.10) than the #32 qualifiers ET. (minimum dial-in3.66,maximum dial-in 4.99) No minimum weight or maximum cubic inch limit. All rules subject to change at the sole discretion of the X-DRL Technical Services Department.

REQUIREMENTS AND SPECIFICATIONS

BODY

BELLY PAN: Allowed. Pan must extend beyond the leading edge of the engine and any accessories. The front edge of the pan must have a 2” lip.

BODY: Funny car or one piece bodies not allowed even if equipped with doors. Maximum front end overhang of 45” as measured from centerline of front spindles. An X-DRL accepted extension may be used to create 45” overhang if the front end overhang of the original body is less than 45”. All bodies must originate from a documented production vehicle. All new cars must be accepted by the X-DRL Technical Services Department prior to construction.

DOORS: Required. Doors must be functional and able to be opened from both the inside and outside of the vehicle. Doors may be fabricated from carbon fiber, fiberglass or metal. A metal deflector between the fenders and the leading edge of the doors is required.

FIREWALL: Magnesium or composite prohibited. All firewalls must be made of steel or titanium(.024 minimum) or aluminum (.032-inch minimum).

FLOORS: Replacing stock floors with .024″ steel, .032″ aluminum or .024” titanium allowed. Driver’s side floor pan must be minimum .024″ steel and must be welded in place extending from firewall to behind the driver’s seat. X-DRL approved flame retardant carbon fiber accepted.

TAIL LIGHT: Functional rear tail light is required.

WINDOWS AND WINDSHIELD: Required. May be replaced with .125 minimum polycarbonate material, such as Lexan MR 4000 or equivalent required. An opening with a 4″ diameter minimum is required on side windows adjacent to the driver.

CHASSIS

BATTERY: Maximum of two batteries allowed. All batteries must be securely fastened using metal fasteners. Batteries  (including battery box) must weigh less than 100 lbs. Must have an external master mechanical electrical disconnect at the rear or vehicle marked “PUSH OFF”.

BRAKES: Four wheel brakes with dual master cylinder mounted above frame rails required.

CHASSIS: Must be SFI Spec. 25.1E, 25.2 , or 25.3 with current NHRA certification tag prior to competition.

DRIVER LOCATION: Must be in conventional left hand drive location.

GROUND CLEARANCE: Minimum of 3” required from front of car to 12” behind front axle centerline, 2” minimum for remainder of car.

STEERING: SFI Spec. 42.1 steering wheel disconnect required.

SUSPENSION: Race car type suspension required. Solid suspension prohibited. Shock absorbers required for all four wheels.

TIRES: Slicks permitted. Must be automotive type designed for racing. Tires cannot be extend outside of bodyline. All tires must have manufacturer, model and or part number and size information clearly and permanently designated on sidewall.

WHEEL BASE: Minimum 90”. Maximum variation is 1” side to side.

WHEELIE BARS: Required, non metallic wheels required.

WHEELS: Wheels meeting SFI Spec. 15.1 required. Inner Liners accepted. Maximum rear wheel width 16” measured between the inner and outer tire mounting surfaces. Use of a liner mandatory on all non bead lock wheels.

DRIVELINE AND ENGINE

FUEL: Alcohol, gasoline, methanol, ethanol and diesel allowed. The use of nitromethane, propylene oxide or other additives is  prohibited.

FUEL SYSTEM: No part of the fuel system may be mounted on the firewall or in the area of the flywheel/flexplate. Any  rear mounted fuel cell must be vented outside of the body and isolated from the drivers compartment by a flash shield. Front mounted fuel cells systems must be mounted between frame rails and enclosed in a round tube frame 1 ¼” ODx.065” chrome-moly or .118 mild steel tubing.

INTAKE MANIFOLD: An X-DRL accepted burst panel is required on all non-naturally aspirated vehicles.

NITROUS OXIDE: Permitted.

INDUCTION: Carburetors, fuel injection or electronic fuel injection permitted. Two return springs mandatory.

CLUTCH/FLYWHEEL: Flywheel and clutch meeting SFI Spec 1.1, 1.2, 1.3, 1.4, or 1.5 certification required as per application.

DRIVELINE: Each end of driveshaft must have round 360-degree driveshaft loops within 6 inches of U-joints. A full 360 degree drive shaft tube is recommended over yoke, extending a minimum of 12” from transmission tail shaft.

ENGINE SETBACK: Maximum of 10% of total vehicle wheel base as measured from the centerline of the forward front spindle to center of front spark plug hole.

EXHAUST: Open conventional style headers permitted. Exhaust gasses must be directed out of the body and away from the driver and fuel system. Zoomie type headers must be directed upward a minimum of 3 degrees.

HARMONIC BALANCER: SFI Spec. 18.1 certification required.

FLYWHEEL SHIELD: SFI Spec. 6.1, 6.2 or 6.3 certification required on all clutch equipped cars.

FLEXPLATE: Automatic transmission flexplate meeting SFI Spec 29.1 required.

FLEXPLATE SHEILD: SFI Spec 30.1 required. An SFI 6.1, 6.2 or 6.3 bellhousing is permitted on torque converter.

TRANSMISSION SHIELD: A one-piece transmission shield meeting SFI Spec 4.1 is required on all automatic and planetary transmissions.

REAR END: Automotive type required. Independent rear suspension prohibited. Aftermarket axles and axle retention devices required. Wheel studs must be 5/8” minimum. Titanium and or Aluminum  Wheel studs prohibited.

STARTER: All entries must be self starting with onboard starter and battery. No push starts allowed.

SUPERCHARGER: Permitted, 14-71 (or smaller) standard or hi-helix supercharger. Screw supercharger prohibited. Cars utilizing 12-71or 14-71 superchargers must use an SFI 14.2 or 14.3 Supercharger Restraint with approved bag from same manufacturer. All other superchargers require an SFI Spec. 14.1, 14.2 or 14.3 Supercharger Restraint. Belt guards shielding both fuel and oil lines are mandatory. Supercharger restraint straps must not place load on any fuel line when fuel extended. Aluminum studs required connecting supercharger to the manifold.

TURBOCHARGER: The use of single or dual turbochargers permitted.

TRANSMISSION: Any type allowed. All automatic transmissions must have a neutral safety start switch and reverse lockout device. One piece transmission shield meeting SFI Spec 4.1 is required on all automatic and planetary transmissions.

OIL LINES: All flexible pressurized oil lines exceeding 30 psi and excluding return lines must pass a minimum 300psi pressure test for 30 seconds without indication of separation, weeping, leaking, etc. Must be tested and tagged within 2 years of competition with date, PSI, and tester ID. All supercharged entries must have all lines routed so that they are not directly in-line with cylinder head gaskets at the front, rear or side of the cylinder heads.

VENT TUBES: Required on all supercharged engines. Must be minimum 1” diameter connection and positive locking.

THROTTLE STOPS: Mechanical, electronic, or pneumatic throttle stops prohibited. If the car has a throttle stop in place, ALL controls must be clearly disconnected.

DELAY BOX: One delay box/device is permitted; it may be attached to the transbrake, and/or shift timer only. The wire to the transbrake (or line-loc) may contain a splice that activates the two-step/launch control device in the ignition system. All wiring associated with the delay device, ignition system, automatic shifter, tachometer, data recorder, and fuel-injection system must be fully visible, labeled, and traceable.

MISCELLANEOUS

CREDENTIALS: A valid X-DRL membership, X-DRL, NHRA, or IHRA competition license is required to compete. Valid IHRA and NHRA competition licenses may be transferred when presented with a current physical.

DATA / ELECTRONICS ACQUISITION: Allowed as record only. Cannot control any function on the vehicle.

STARTING LINE ENGINE CONTROL DEVICES: Allowed.

TOW VEHICLES: Allowed. A valid driver’s license is required to operate any type of tow vehicle. All passengers must be seated inside of vehicle with all doors closed. Riding in open hatchback, trunk or cargo area not allowed. ATV’s are allowed with a maximum of one passenger who must be seated at all times. Golf carts are allowed with a maximum of three passengers who must be seated at all times. Posted pit speeds must be obeyed at all times. If pit speed is not posted, maximum pit speed will be 10 mph.

SAFETY EQUIPMENT

DRIVER RESTRAINT SYSTEM: SFI Spec. 16.1 certification required. 7 point system recommended.

ENGINE/OIL CONTAINMENT SYSTEM: All entries must use an X-DRL accepted Carbon/Kevlar lower engine containment system SFI Spec 7.2 required. The Carbon/Kevlar system must include the oil pump and related components, 2” high lip minimum lip on all sides, extend from forward of the harmonic balancer to the rear motor plate  and be a minimum of 3” above ground. Nonflammable, oil absorbent liner required inside of containment system.

FIRE SYSTEM: Minimum 5-pound X-DRL accepted fire suppression system required. Supercharged cars must utilize a 20-pound minimum X-DRL accepted system. One nozzle required inside driver’s compartment. One or more nozzles must be directed into engine compartment. Recommended that all fire suppression  be released with a single actuation (i.e. single handle, button or lever).

HEAD AND NECK RESTRAINT: SFI Spec. 38.1 required. An aluminum skid plate located above driver’s head is recommended.

HELMET: SN-2000 or newer or SFI 31.2 or 41.2 required. Use of open face helmet prohibited. EjectHelmet Removal System (Part # SDR 890-01-30) or equivalent recommended.

MASTER ELECTRICAL CUTOFF: Required. Must be clearly labeled “PUSH OFF”.

PARACHUTES: Parachute required. Separate shroud-line mounting points with 1/2” sleeved grade 8 bolts required.

PROTECTIVE CLOTHING: Driver’s suit meeting SFI Spec. 3.2A/15, gloves meeting SFI Spec. 3.3/5 and shoes meeting SFI Spec. 3.3/5 required.

RF SHUTDOWN RECEIVER: Properly functioning Electrimotion shutoff device (PN: RF001PS or combination PN: SB001 and RF001) recommended, required for 2014 season .

ROLL BAR PADDING: SFI Spec. 45.1 required.

UPHOLSTERY: Driver’s seat foamed with energy absorbing material, formed for the driver and covered with flame retardant material and Lateral helmet supports recommended, required for 2014 season.

WINDOW NET: SFI Spec. 27.1 required.