Junior Sprint Format (Sunday-Friday)

  • Pill draw for heats

  • 8 or 10 lap distance for heats (10 minute time limit can be enforced any time)

  • Heads up line up for feature

  • Feature will be 15 or 20 laps

  • A driver who goes two laps down during the course of an event (heat, qualifer, B-Main, A-Main) will be removed from the speedway for the remainder of that heat race.


Junior Sprint Format (Saturday Finale)

  • Pill draw for timed warm up order

  • Timed hot laps to determine staring position

  • Invert of four for heat races

  • Points from timed hot laps and heats determines feature line up

A time limit may be enforced by 600 Speedweek officials at any point during the night of competition in order to combat elements of the race night to complete the event. Example: curfew, weather delays, etc.


Junior Sprint Rules

Frame Construction

  • Minimum 1” O.D. x .065” wall 4130 condition N tubing or 1” x.083” Mild Steel on main rollcage tubing and uprights as well as bottom rail.

  • 6 point minimum vertical uprights to support top roll cage.

  • All 4 corners of the top roll cage must be gusseted with 3” minimum gussets 5/8” OD x.065 tubing.

  • No slip joints allowed anywhere on the frame.

Head Clearance & Halo

  • A minimum 3” from the top of the drivers helmet to the top of the roll cage, when seated innormal driving position, directly above the head.

  • If the clearance is less than specified, a 3 or more point halo (bolted clamped or welded in) must be used to provide proper head clearance.

Seat

  • A full containment seat is highly recommended. If a full containment seat is not used, vertical or horizontal side frame frame bars on the left and right side to protect the driver are mandatory.

  • Head supports on the seat should be the same height as the driver's ears.

  • Use seat manufacturer recommended sizing to be sure the seat is properly fitted to the driverat the waist, hips, shoulders, and head.

  • A quantity of (4) 5/16” bolts must be used to securely mount the seat.

  • Large diameter (fender) washers must be used if the material thickness of the seat at mounting area material is less than .090”

  • Seat can not be mounted such that it protrudes below the bottom rail.

Seat Belts

  • See supplemental SFI Seatbelt Mounting Installation document for proper seatbelt mounting methods.

  • Five point belts, lap belts, shoulder belts and crotch belt are mandatory. Six point belts are optional. Minimum 5/16” bolts or proper wrap around (not on bottom rail) mounting required.

  • Lap Belt Angle: 45° to 80° from the horizontal.

  • All shoulder harnesses must be mounted so that straps loop over a bar. This bar must provide the shoulder belts with a 0” to 2-1⁄2” above the perpendicular line of the driver’s chestline to top of shoulders.

  • Seat cutouts for shoulder belts and shoulder belt bar must be located such that they do not contact the seat.

  • No sharp edges on the seat for any belt cut outs.

Body

  • Full sprint car type body must be used.

  • Sprint car look tails must be in place.

  • Chain Guards .060” aluminum chain guards or a full arm guard must be installed where chains are exposed to the driver. Driver must not be able to touch the chain while in race seating.

  • Firewall between the driver and the engine compartment is mandatory. Minimum thickness is .050” aluminum.

  • Quick release steering wheels are highly recommended.

  • Any body panel may not extend past the body surface more than 2-1⁄4”. This includes rear sail panels.

Cockpit

  • No cockpit driver adjusters of any kind allowed.

  • Kill switch (ignition switch) and starter button must be on the dash and able to be accessed by the driver.

  • NO crew-to-driver radio communication Fuel

  • Methanol Alcohol fuel only. No Gasoline.

  • Top end lube is legal.

  • No performance enhancing additives in fuel or top end lube.

  • A maximum of 2 gallons of fuel may be used.

  • VP M3 and M5 and other brands of like fuel are illegal. Any approved test means available may be used.

Bumpers and Nerf Bars

  • Front & rear bumpers, right & left nerf bars are mandatory.

  • Nerf bars can not exceed past the outside oF the rear tires by more than 2” and must be no more than 4” inside of the rear tires.

  • All bumper ends must be bolted to the chassis. No rivets or pins of anytype may be used.

  • Front bumper can not extend past the frame by more than 8”.

  • The car must start the race with all bumpers intact. It may finish the race without a front bumper, but nerfs and rear bumper must be on the car to race (one leg of 3 point or 2 legs of a 4 point nerf may be cut off in hot pits if necessary to keep racing).

Brakes

  • All cars must be equipped with properly functioning rear brakes capable of locking up the rear tires. Front brakes are not mandatory.

  • Driver Safety Equipment

  • Helmets must be one piece full faced and Snell rated not to exceed three prior “Snell years” evaluated Jan. 1 of that race season. No damaged or cracked helmets.

  • Full SFI-3.2A/5 rated driving suits are mandatory

  • Arm restraints and gloves are mandatory

  • Neck collars or head & neck systems are mandatory and are to be worn according to the manufacturer's recommendations.

Wheels

  • Only 8” diameter wheels can be used.

Tires

  • Right rear tire must be a Hoosier 16.0/8.5/8/8 RD 20.

  • Mechanically modifying the tire is ok (grooving).

  • Chemically treating the tire in any form is illegal.

Weight

  • 400 pounds minimum car and driver after the race.

  • Added Weight: Any material used for the purpose of making the weight limit must be welded or securely bolted to the car frame. No liquid or loose ballast will be permitted. The weight must not be able to move during the race.

Wings

  • Right side board, maximum 42" x 20" - 16” x 16” minimum.

  • Left side board, maximum 42" x 20" - 18” x 18” minimum.

  • Side boards may not extend more than 3" beyond center section and sides must cover center section.

  • Overall wing size minimum 5.5 square feet minimum.

  • Cannot be mounted outside the centerline of the tires.

  • The side board kick out cannot exceed 2 inches.

  • Nose wings are optional and cannot exceed 24"x 18". Sideboards not to exceed 8.5” tall and 21” long

Engine