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| 2007 Demo Derby Rules and Regulations |
1. 70's/80's & Newer Class Only hardtop automobiles. (No pre 1967 Chrysler imperials,Jeeps,
Trucks, Taxis, Limo's, Hearses or Ambulances) will be eligible to compete. No smash
topwagons, smashback sedans/wedged trunks ,no folding of quarter panels over trunk lids
Smashing of tops of rear quarters through out will be consider wedged.
Fresh runs:Maxium of three inch dip will be allowed. Trunk lids must remain in original location
Gauged from rear quarter to rear quarter ( must be able to gauge minimun of three places
across and two places diagionally)
Reruns Max of 5" dip in trunk(must be able to gauge min of two (2) places across and two (2)
places diagionally.
2. The following MUST be removed: All glass except windshield, original gas tanks (see rule
#14), all seats (except driver's seat), head lights and taillights, all chrome, wipers, antenna, door
handles, mirrors and sun visors, rear compartments of station wagons, and all other loose items.
Compact may leave original tanks under car IF IN FRONT OF REAR AXLE
3. Cars may be welded using 3" welds every 3" or 6" welds every 6" on passenger doors, trunks
and station wagon tailgates (in lieu of outside welds, station wagon tailgates may have a
3"x3"x1/4" angle 3" long welded on inside every 3"on the bottom only ) but not both. You MAY
NOT weld both inside and outside. Or cars may be wired, banded, bolted and chained in the
same way. Drivers door may be welded solid if desired. Banding every 6" on passenger doors
and trunks. Bands no larger than 1-1/4" wide. chains must be at least 1/4". No welding or bolting
to frame and bumpers. No body seams may be welded! No wires from body to roof includes
windows
4.Patches:Rusted cars may be patched.(Patches must be Tin)strictly enforced. Stitch weld
patches 1" on 1" off. Patch one side only( you must prove your rust)
5. Reruns: Rerun fixes must be stitch welded only- Allowed at the discretion of the officials.
Stitch weld spilt seams 1" every 6" on reruns only. Do not add metal. For drivers safety, rerun
cars must have trunk/tailgate bent down or have an opening cut to see backward.
6. A steel bar or pipe (maximum 3 "diameter) may be mounted securely behind the drivers seat,
from door post to door post (not to floor). A steel bar or pipe (maximum 3") may be mounted
across the dash also. Recommended mounting plate size to be no larger than 6" x 6" x 1/4"flat
plate (NO CAGING) Postless cars may have one (1) 3/8 x3" plate from sheet metal to sheet
metal in place of post.
OPTIONAL: A Halo Roll Cage may be put on pipe behind the driver's seat. It can be welded to
pipe behind seat. Halo may touche door or door post on driver's side, but cannot be welded or
attached in any way at that point. Halo can have (5) 1 inch welds on the roof on each side. Halo
may not travel more than half way across inside of car from drivers side. (Maximum Diameter of
2 inches)
7. Only stock wheels can be used. Valve stem protectors will be allowed. All wheel weights must
be removed. All threaded through rims is not permitted
8. Any tire 15" Max. No LIQUID MATERIALS IN TIRES, water,foam, cement etc is not permitted
Air only !!!
9. No special bracing or reinforcing of suspension or body. Front bottom control arm (only) may
be welded to max. Bumper height. Body mounts may not be removed or moved. No over sizing
or washering of original bolt or mount. Body mounts to 1/2" max with 1 (one) 3"x1/4" Plate.
Strictly enforced! stock rubber from mounts must be visable throughout. Plate or washers may
NOT be welded or Bolted to frame.
9(a) There will be no welding of seams Maximum of 2" overlaps on front frame, repair at jack
point allowed on reruns if it had to be replaced. Weld repairs for reruns in front of control arm
must be butt welded. (No Exceptions)
10. Shocks must be stock, working shocks, mounted in original locations. No homemade shocks
no welding of eyes. No circle track shocks or off road shocks
11. Fender wells may be cut out. Inner and outer panels may not be welded or bolted
togetheranywhere. No riveting of inner and outer fenders, hoods or trunks.
12. Vehicles must have hood in place. Hoods must have stock hinges in place and must be
open for inspection. Six (6) 1/2" bolts or 4 (four 3/4 bolts max with no larger than a 3"x1/4"
washer to hold hood down. Min. 8"hole (with excess sheet metal removed from hole) MUST be
cut in hood to enable firemen to put out fires without lifting hood. Make sure cooling fans are
covered. Strap or wire from roof to cowl is mandatory for drivers safety
13. Bumpers may be cut to remove sharp edges. No
extra reinforcements (bolts, washers, etc) chain around bumpers may be welded or bolted to
bumper shock to keep bumper from falling off. Chains may not be heavier than 3/8" (No welding
of links together) Relocating of bumper shocks is not permitted. Front and rear bumper height
to be 22" Max. to bottom of bumper, checked in three places. Maximum of 1/4" plating may be
used no larger than 4"X4" welded onto the bumper shock plate if a different make bumper is
being used on car. RERUNS: BUMPER HEIGHT MAX OF 24" CHECKED IN THREE PLACES NO
EXPOSED FRAME RAILS, NO PROTRUDING BUMPER SHOCKS WILL BE PERMITTED. (MUST
BE ABLE TO UNBOLT BUMPERS FROM CAR-NO WELDED ON BUMPERS)
14. Battery mounted to floor (not in seat) must be separated at least 5 feet from relocated gas
can and secured firmly in place. Batteryshould be covered. Only 1 battery is permitted, any size
(i.e. 12 or 14 volt, - NO 24 volt batteries allowed).
15. Relocated gas container must be secured firmly behind drivers seat in metal approved cans
only (boat cans will be accepted). Cover tank to prevent possible splashing. Compact Class
only, may relocate tank inside car but must have a kill switch on the fuel pump. NO PLASTIC
CANS
16. Radiators can not be relocated. May be banded (two bands maximum) to core support
vertically or horizontally. chrysler radiatormounting bracket to be 3"x3"x1/4"x6"long Max.To be
mounted to core support.OVERFLOW must be pointed toward ground& attached to car so it will
not spray forward. No expandable foam. WATER ONLY. No antifeeze(crowd safety)
radiators may have window screen to protect from flying objects or mud. Homemade grates or
grids will not be permitted. No homemade cover plates. Home made cooling systems may not
touch any part of frame or metal on car. Attached to engine only.
17. All cooling systems must be under the hood. No cooling systems inside the car (driver
compartment). This means transmission coolers also.
Air cleaners will be mandatory.
18. Coil springs may be welded, wired, banded, bolted or chained (bottom only) to rear end! No
coils inside of coils. Spacers will be allowed in coil springs to max. 22" bumper height.
19. Brakes must work. No deliberate hitting of arena tires for braking purposes.
20. Skid plates may be welded on oil pan and transmission pan (separately), no more than 1"
wider than the part
21. Must bcut 2 (two) holes , 8" minimum in trunk for inspection
Maxium of six 3/8 "bolts allowed around holes removal from inspection line if not cut out.
22. STAY IN CAR AND DO NOT LOOSEN SAFETY BELT UNTIL EVENT IS STOPPED OR OVER.
23. After second fire in same auto, in same event, the car will be disqualified.
24. No deliberate hitting of drivers' door. Do not use drivers door as a shield
25. No teamwork (double-teaming).If deemed necessary, the officials may stop an event and
make the double teaming drivers hit back to back. Second stoppage is cause for disqualification
of one or both drivers.
26.NO fresh PAINTING OF INSIDE OF CARS!!! No undercoating underneath, inside or on frame
27.Inspections will close at 7:45, DRIVERS MEETING AT 7:50
DERBIES BEGIN AT 8:00 P.M., CARS WILL NOT BE ACCEPTEDON GROUNDS AFTER 7:30
P.M. DRIVERS MUST BE WITH THEIR CAR NO LATER THAN 7:30 P.M.NO EXCEPTIONS.
28. Exhaust coming out of hoods must be pointed straight up.If exhaust is considered to be
pointed in a direction of danger to the fans or other drivers the car will be disqualified.
29. The officials reserve the right to re-inspect cars at any time during the event.
30. Leaf springs: All cars with leaf may have 9 springs on each side including the main springs
may be 5/16" thick max. (if 5/16 wrench WILL NOT fit over spring YOU WILL NOT RUN) (2) two -
3/4 " wide and must have min. of 1" stair step starting from the eyebolt. All springs must be
mounted under the main axel tube. Springs may be clamped with factory tin clamps only, 2
behind axel and one in front per side. (no duct tape ) Home made leaf springs not permitted.
New Rule: Maximum 5 Bolt rearends on cars. NO TRUCK REARENDS