Demolition Derby Rules

Class is open to all men and women 16 and over.  16 and 17 years olds must have a notarized permit signed by parent/guardian.  Driver must have a driver’s license.  In fairness to all, the following rules and regulations shall prevail.

 

PRIZE MONEY

Prize money is different at each show.  Look at our schedule to find out prize money.

 

ENTRY FEE

Each car/driver shall pay $50.00 unless otherwise posted.  Everyone entering the pits must purchase a pit pass at gate.

 

PARTICIPANT REGULATIONS

2003 and newer Vics must have stock cradle (No reinforcement of stock cradle).  No jeeps, trucks (Rancheros and El Caminos are considered trucks), convertibles.  No carryalls, Hearst, limos.  No imperials or imperial sub frames allowed.  NO LINCOLNS 61 to 70.  Driver may maneuver forward or backward.  No deliberate driver’s door hits.  If a driver does not hit another active car within on minute that car/driver shall be disqualified.  No sandbagging, if you are sandbagging the race will be stopped and a sandbagger flag will be placed on your car.  Cars must move when hit or show visible damage.  Driver must remain in his/her car with helmet on until car is removed from track or officials tell you different.  Make sure helmet strap is fastened.  Helmet must remain worn during competition.

 

MANDATORY

You must have number on both doors big enough to read and bright enough color to see.  Also must have number on roof with name on roof above front doors.  Use your choice of number.  If more than one of the same number shows up you may have to change your number.  No profanity allowed on cars.  Roof signs are accepted.

 

ENGINE

Any engine or transmission is allowed.  Engines must be stock motor mounts.  Lower engine cradle will be allowed (this is to only protect engine block).  You may tie engines down using 2 chains, no more than 2 links of 3/8” chain welded to frame.

 

RADIATORS

Stock location only.

 

TRANSMISSION

Tranny coolers are allowed.  No additional transmission protectors allowed.

 

BATTERY

Must be in a secure position and be covered with something non flammable like rubber tube, rubber floor mat, etc.  Batteries must be secured so they don’t move.  2 12 volt batteries max.

 

REAR ENDS

Any 5 lug OEM car rear end can be ran.  One simple rear end brace, from backing plate, no wider than 3”x 3” allowed.  Cannot be used to reinforce car in any way.

 

DRIVE SHAFTS

May be shortened or lengthened or you may use slip drive shaft.

 

SUSPENSION/TRAILING ARMS & A-ARMS

No welding suspension parts what so ever.  All must remain stock UNLESS STATED BELOW:

May be shortened or lengthened with no more than 1” overlap.  No other reinforcement.  A-arms may be bolted with on 5/” bolt or nine wired (with 4 wraps), or one 3/8” chain (1 wrap), or can be welded with two 2” wide by 3” long straps.  None of the above may be used as reinforcement.  Spring spacers are allowed.  Leaf springs must be stock thickness and width with 3” stagger in the rear and 2” in the front.  You may add a maximum of 4 leaf springs claps with a maximum material thickness of ¼” and no wider than 1 ½”.

 

STERRING COLUMN/BRAKES/SHIFTER/GAS PEDAL

The steering column may be modified form box to steering wheel.

Brakes must be in stock location.

Aftermarket floor shifter and gas pedal are allowed.

 

HOOD/CORE SUPPORT

Hood must remain in factory position.  6 hood bolts allowed only the 2 core support bolts may go through the frame outside of radiator, in factory location.  Bolts must not be any bigger than 1” with washers no bigger than 6” outside diameter.  You must have 2 holes cut in the hood beg enough for fire extinguisher, not directly over carburetor.  You may use 20 bolts around header holes no bigger than SAE 3/8” with washers no bigger than 1” outside diameter.

 

TRUNK

You can use four ¾” bolts in trunk and 2 may go through frame with washers no bigger than 6 inches outside diameter.  Trunk lids must remain on factory hinges.  Tucking or V’ing of trunk lid is allowed, but absolutely no wedging.  You may chain or nine wire.  NO MORE THAN 50% OF TRUNK MAY BE TUCKED.  You may also weld trunk lid 5” leave 5” with 2” x ¼” strap.  Or bolt with 12 3/8” bolts.  Creasing allowed but cannot be double creased.

 

BODY

No seam welding, no patching.  Pre-denting and creasing are allowed (no DOUBLE CREASING).

 

FENDERS & QUARTER PANELS

Fenders may be trimmed and 10 bolts may be used per fender.  Bolts are to be no bigger than 3/8” with washers no bigger than 1” outside diameter.  Fenders may be trimmed, bolted or welded (with weld 1” skip 1”).  Quarter panels must remain vertical with 3” of OEM position.

 

BODY MOUNT BOLTS

May be replaced with up ¾” bolts.  All bolts must be inside frame with maximum washer size of 3”. WITH 1” SPACERS.

 

FRAME

The only welding on frame acceptable is as follows:  front side of a-arms forward, top seam only, ½” wide weld.  No added metal.  12” maximum behind a-arms tilting will be allowed using rules as mentioned above.  Max ½” wide welds.

 

FRAME REPAIRS

Four plates (4” x 5”) will be allowed as repair plates.  These are only repair plates and must be visually necessary repairs only.  ALL DAMAGE MUST BE VISIBLE.  NO EXCEPTIONS.

 

DOORS

Driver’s door may be welded solid with a strap no bigger than 3”, on the outside only.  All other doors you may weld 5” on 5” off with strap no bigger than 3”.  Or you may chain or wire doors shut.  NO WELDING ON WAGON TAILGATES.  You may chain, nine wire or bolt in four places.

 

CAGES

You may have a cage with two side bars and three cross bars.  The cage cannot extend past the dash area in the front and must be no further back than 2 inches in front of inner fender wells in the back.  This can be welded in.  Absolutely no kickers.  You may have a halo bar.  Must be vertical and within 12” of driver’s seat.  None of the care or halo can connect to the frame.  Halo cannot connect to the windshield bars or the roof sign.  Cage must be a minimum of 4” off floor and no higher than bottom of door windows.  You are allowed a gas tank protector cannot be more than 24” wide following same rules as above.  Must be 2” off package tray.

 

BUMPERS

Must start with factory bumper.  May reinforce the inside of bumper but must remain stock.  Bumpers may be reinforced no wider than frame rails.  OUTSIDE OF BUMPERS MUST BE STOCK.  Must have hole in the end of the bumper.  Bumpers can only be reinforced between front bumper skin and stock backing.  NO homemade points.  No reconfiguration of stock bumpers.  Bumpers must be mounted in front of core support bolts.  All bumpers and brackets must be passenger car origin.  No rear brackets on front.  All brackets and shocks must be mounted outside of frame unless factory shocks were mounted inside of frame (example 80’s Ford).  Cadillac and Y frame Chryslers must be mounted outside of frame.  Bumpers and brackets may be welded solid to frame.  NO brackets may extend further back than 10” from core support bolt.  (DO NOT MOVE, RESHAPE ORE REALLIGHN CORE SUPPORT BOLT HOLES).  You may run 2 additional 4”x8”x1/4” straps per bumper and may be welded to frame to hold bumper.  Bumper height from ground limited to 16” minimum to 22” maximum from bottom of bumper.  For front of cars you must use front bumper brackets.  No rear brackets on front (OEM).  ANYTHING EXCESSIVE WILL NOT BE ALLOWED.  IF YOU HAVE A QUESTION CALL PRIOR TO EVENT.  (ONE SKIN PER BUMPER, MAX FOR REINFORCEMENT ON INSIDE OF BUMPER 1 PIECE OF 4” TUBING)

 

GAS TANKS

Maximum tank size is 7 gallons of gas.  Fuel cells/metal boat tanks must be placed in back seat area and properly secured.  NO STOCK TANKS.  Fuel cells must secured so there is no movement (do not used bungee cores for this).  If tank is not secure you will not be running.  Fuel cells must have secure caps and be leak proof.  All fuel lines must have no leaks.  Stock gas tanks must be removed or have holes in them and washed out.  NO PLASTIC TANKS.  (heavy plastic racing fuel cells may be used).  You must have a shield of metal or tin between driver and gas tank (this may be mounted with screws).

 

TIRES/RIMS

Tire inside of tire is allowed.  Fork lift tires okay.  No fluid inside of tires.  Valve stem protectors are allowed.  No reinforcing of rims except around bolt holes (2” maximum on outside diameter of lug holes).

 

9 WIRE

Unlimited amount may be used (PLEASE CALL WITH ANY QUESTIONS).

 

SAFETY RULES AND REGULATIONS

  1. Cars must have at least one bar attached from roof down to dash area to prevent hood from coming in.

  2. Radiator overflow hose must be pointed at the ground and fastened so they cannot shoot water towards officials or other drivers.

  3. Header pipes must be pointing straight up, cannot be aimed towards front of car

  4. NOTE: if you have a hole in the firewall it should be covered.

  5. Safety belts required.

  6. D.O.T. approved helmets mandatory.  Any driver using an open faced helmet will not be covered by insurance if facial injury occurs.

  7. Safety glasses or shield recommended.

  8. Mandatory:  you must wear long pants and a shirt.  Fire suit recommended.

  9. 2 fires and you are out unless it’s a fuel fire than it’s just 1 fire and you are out.

  10. No alcoholic beverages or drugs allowed in pit area or on the track.

  11. NO PIT PERSONS ALLOWED ON THE TRACK.

  12. NOTE: Management does have the right to disqualify a car/driver at any time.  Any person on track or causing trouble and not complying with the rules will be asked to leave.

  13. Protests must be made no later than 5 minutes after the heat in question.  No protests will be taken after the feature event.  Only DRIVERS are allowed to protest a car.  Officials will re-inspect the top cars.

These rules are for the DEMOLITION DERBY class and will remain DEMOLITION DERBY class.  DO NOT do any more than what is stated in these rules.  Do not do anything to make your car illegal after inspection.  If this happens you will be disqualified and no return of entry.  Officials have the right to re-inspect your cars at any time.  THIS IS THE MAXIMUM ALLOWANCE OF WHAT YOU CAN DO IN THIS CLASS.

SOUTHERN OKLAHOMA SPEEDWAY

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