Demo Derby Rules
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P.O. Box 707, 601 Fairgrounds Road
Mt. Vernon, Ohio 43050
740-397-0484
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COMPACT & FULL SIZE CARS

Thursday July 27, 2017 at 6:30 P.M.

Chairman - Dustin Beheler; Dennis Bartley, John Curtis, Kyle Atherton & All directors

If any competitor has any questions and / or concerns, please contact:

Camron Grandstaff – (740) 507-6629 or Brian McKeever – (740) 501-7892

Trophies Sponsored by: McDonald Logging & Family

Compact Class Payout    1st - $800.00, 2nd - $400.00, 3rd - $100.00

Safety

  1. Safety equipment such as helmet, eye protection, and long sleeves & pants must be worn during competition.
  2. If an official feels a competitor is endangering the safety of other participants or spectators, the competitor will be asked to leave and forfeit any entry and admittance fees.
  3. Seat belts must be installed in a secure manner and must be worn during competition. Original seat belts may be replaced with a lap belt, but must be secured properly.
  4. A 24” x 24” roof sign is mandatory on each car for identification purposes.

General

  1. Class is open to any RWD or FWD midsize or compact car.
  2. Wheelbase must measure less than 109”.
  3. Engines may be 4 or 6-cylinder.
  4. No full frame cars permitted.

Frame

  1. Front frame section may be seam welded from firewall forward or sub frame can be welded to the frame section. Only one of these can be done, not both.
  2. Tilting of the front frame is allowed. No extra metal permitted back in place of the tilt.
  3. Front and rear frame may have 2” x 2” x 10” long box tubing or 2” round pipe as bumper shocks. Shocks may only be welded to the side of the frame.
  4. Rear frame can be notched or creased.
  5. Front frame may be “hard-nosed” to the front of the core support. The support must remain in stock location.
  6. Frames may have hump plates no larger than 6” x 16” x ¼” and must be centered on the hump. Hump plates must also maintain at least 2” spacing from the rear end housing.
  7. If front frame requires a patch or repair, you must call an official first. Officials decision is final. Repairs or patches must use the same frame section from the same make and model of car to repair. No homemade frames will be permitted.

Drivetrain

  1. Any 4 or 6-cylinder engine permitted. Engine cradles, steel bell housings, shifters, rear end protectors, and distributor protectors are permitted.
  2. Skid plates may be welded to the oil and transmission pans, but may not be connected to each other or installed in a manner to strengthen the car in any way.
  3. No steel radiators or radiator “cages” permitted.
  4. Any make of rear end permitted. Gear of rear ends permitted.

Cages

  1. A four-point cage is recommended. Cage bars must be under 6” diameter. All cages must maintain at least 5” spacing from the highest point of the car floor, i.e. transmission tunnel. Back bar may not extend more than 12” past front seats.
  2. Four down bars from cage to car frame or floor are permitted.
  3. Cage gussets can be used in each corner of cage.
  4. Center bars from dash bar to back bar are permitted.
  5. Gas tank protectors are allowed but must remain under 24” wide. May not be connected to the floor, must remain “floating.”
  6. Roll over bars are permitted. They must attach to the side and back bars behind the driver’s seat. They cannot extend to the floor.
  7. Windshield bars may be welded from roll over bar to dash bar.
  8. Rear window bars cannot mount to the cage or the roll over bar. If they do, they will be cut.

Bumpers

  1. Any year, make, or model is permitted.
  2. Loaded bumpers are not permitted.
  3. Bumpers may be seam welded and end caps must remain open.
  4. Homemade bumpers / DEC bumpers are not permitted.
  5. Two (2) 2” x 6” x ¼” plates may be used to weld bumper to frame.
  6. Bumper shocks may be welded to the side of the frame only.
  7. If car was built with factory bumper shocks located inside of frame, they will be permitted to remain as long as they remain factory bumper shocks.
  8. Bumper shocks cannot extend further than 10” past the end of the frame.

Body

  1. Doors may be fully welded at the seams. 3” x ¼” plate may be used to weld doors. Overlapping of plate not to exceed 3”.
  2. Trunks and hatches may be wired or welded with the “5 On 5 Off” rule using 3” x 5” x ¼” plate. Trunks may be tucked but the rear quarters must remain at stock height unless previously run. Trunk lids may be welded to the quarter panels and speaker deck.
  3. Speaker deck may be removed.
  4. Hoods may be wired or bolted in six (6) locations. Bolts may be no larger than 5/8” and only two (2) strands of wire per hole. Hoods must be open for inspection. Front two mounts may be switched to 1” all thread and run through core support and out of the hood. A 12” diameter hold must be cut into hood for fire safety.
  5. Sheet metal repair is permitted on previously run cars only. The metal to be used must be the same thickness of the sheet metal it is replacing.
  6. Core supports may have 4” x 4” x ¼” angle iron welded to it but may not extend any further than 1” past each side of radiator.
  7. No interior seam welds permitted on fresh cars. Seams may be welded on previously run cars only to help firewall or trunk. No extra metal will be permitted.
  8. Stock fuel tanks must be removed. Fuel cell must be placed inside of the car in front of the rear axle.

Suspension

  1. Front and rear suspension may be solid.
  2. Tie rods may be modified or reinforced.
  3. All thread shocks are permitted. Rear control arms can be out of 2” x 2” square tubing or pipe.
  4. Built struts are permitted.
  5. Any tire permitted (tractor, skid loader, fork lift, AG tires) and may be solid, foam filled, doubled or tubed.
  6. No steel tires permitted.
  7. Rims are permitted to have full weld-in centers and multi-lug centers.
  8. Bead locks and valve stem protectors are permitted.
  9. Rear end protectors are permitted but cannot be used to strengthen the car in any way.
  10. Front sway bars can be welded directly to the stock position of the frame or welded to a 1 ½” x 4” bracket or piece of 2” square tubing or pipe which is welded to frame.
  11. FWD cars may use 2” x 2” box tubing, round tubing, 2” flat plate or angle iron to reinforce rear axle assembly. The tubing may be welded to the rear axle assembly but not used to strengthen the body of the car.

Full Size Class “No Protector” Payout                                                                                                1st - $800.00, 2nd - $400.00, 3rd - $100.00

Safety

  1. Safety equipment such as helmet, eye protection, and long sleeves & pants must be worn during competition.
  2. If an official feels a competitor is endangering the safety of other participants or spectators, the competitor will be asked to leave and forfeit any entry and admittance fees.
  3. Seat belts must be installed in a secure manner and must be worn during competition. Original seat belts may be replaced with a lap belt, but must be secured properly.
  4. A 24” x 24” roof sign is mandatory on each car for identification purposes.

General

  1. Class is open to any year, make, or model of sedan or station wagon with a 6 or 8-cylinder engine.
  2. No Imperials, hearses, trucks, SUVs, or limousines permitted.
  3. Judges have final decision. Any disqualification will result in losing of entry or admittance fees and any winnings.

Frame

  1. No cold bending or tilting of frame permitted.
  2. No seam welding of frame permitted.
  3. Notching, dimpling, or creasing of rear frame rails permitted to help frame roll.
  4. No painting of frame permitted.
  5. No hump plates permitted.
  6. A chain may be welded from driver-side hump to passenger-side hump on the inside of the frame.
  7. Sway bars may only be attached by the stock hardware.

Bumpers

  1. Any year, make, or model of bumper permitted.
  2. Bumpers may be welded directly to the frame using two (2) 2” x 4” x ¼” plates on each rail.
  3. If bumper is welded directly to frame, bumper shocks are not permitted.
  4. Bumper shocks may be compressed and welded solid.
  5. Bumpers may be seam welded but ends of bumper must remain open.
  6. Tilting of rear bumper is permitted.

Cage

  1. A four-point cage is recommended.
  2. No down bars or kickers permitted on cage.
  3. Floating gas tank protector permitted. May be against rear seat panel but may not be attached to any sheet metal. Must be centered in the car, and be no larger than 24” wide.
  4. Halo bar permitted. Halo bar must be attached to rear seat bar or door bars but cannot be extended to floor pan.
  5. Door bars cannot exceed 6” past vertical door posts.

Body, Hood, Trunk

  1. Doors may be wired or chained shut with no more than two (2) locations per vertical seam.
  2. Doors may be welded with no more than two (2) 3” x 5” x ¼” plates per vertical seam.
  3. Drivers door may be fully welded shut.
  4. Outside of driver door may be reinforced using flat metal. No protruding metal permitted.
  5. Slight tucking and creasing permitted. Cars must remain stock appearing.
  6. Speak deck must remain in stock location. No tucking of speaker deck permitted.
  7. Body mount bolts may be replaced with no larger than 5/8” bolts with at least a 1” spacer installed. Washers, no larger than 3” x 3” x ¼”, are permitted on each body mount bolt.
  8. Core support may have a 2” x 3” spacer. It can be welded and/or bolted to the original placement of stock spacer.
  9. All thread may be run through core support and mounted to the frame. No larger the 5/8” can be used. If the all thread runs through hood they will be considered two (2) of the hood bolts.
  10. Hoods may be wired or chained in six (6) locations.
  11. Hoods may be bolted with no larger than 5/8” bolts in fours (4) locations using no larger than 3” washers.
  12. Angle iron may be used to bold hood to fender. No more than four (4) locations permitted with two (2) bolts per piece of angle iron permitted.
  13. Hole must be present in hood for fire safety. Hole must be at least 6” in diameter and located over the center of the engine.
  14. All cars must keep hood open for inspection.
  15. Trunks may be wired or chained in six (6) locations.
  16. Trunks may be welded with no larger than 2” x 2” x ¼” plates in no more than four (4) locations.
  17. Trunks that are fastened shut prior to inspection must contain a 6” x 6” inspection hold cut into trunk lid. If trunks are open during inspection, no inspection hole is required.
  18. Trunk lids may be shortened or tucked.
  19. A hold may be cut into the firewall to help with engine or distributor clearance. Officials have the right to deny any vehicle they feel is unsafe for competition.

Suspension

  1. Front suspension may be welded solid with two (2) 2” x 3” x ¼” plates per control arm.
  2. 93+ Fords may switch out control arms to the older style Ford OEM control arms.
  3. No aftermarket ball joints permitted. Any replaced ball joints must be OEM replacement.
  4. No aftermarket tie rods permitted. Tie rods may be reinforced.
  5. Trailing arms may be replaced with 2” x 2” x ¼” square tubing.
  6. No all thread shocks permitted. Any replaced shocks must be OEM replacement.
  7. Factory coil spring suspension cars must maintain coil springs. No leaf conversions permitted.
  8. Coil spring risers are permitted. Wiring risers in place is recommended.
  9. Leaf springs must remain the stock amount. Two clamps are permitted on each side. No homemade leafs permitted.
  10. No reinforcements permitted on 03+ Ford aluminum control arms.
  11. 03+ Ford cars must maintain the stock aluminum suspension components on the front. No swapping of any steering, aluminum cradle, tie rod components, rack and pinion, and upper or lower control arms. Aluminum spindle may be swapped with older-style OEM spindles from earlier Ford cars.
  12. Watts
  13. No axle protectors permitted.
  14. Aftermarket steering columns are permitted.

Drivetrain / Tires

  1. Any engine permitted in any car.
  2. Mounting of engine cannot strengthen the car in any way. Chains are permitted but cannot be used to strengthen or manipulate frame in any way.
  3. No aftermarket slider drive shafts permitted.
  4. No ¾” ton rear ends permitted.
  5. Lower engine cradle and pulley protector is permitted but cannot be used to strengthen frame.
  6. Aftermarket engine mounts are permitted.
  7. No rear end bracing permitted.
  8. No engine, distributor, and transmission protectors permitted.
  9. Aftermarket transmission shifters permitted.
  10. Aftermarket exhaust stacks through hood permitted.
  11. Any tire permitted. Studded tires and wheel weights not permitted on drive axles.
  12. Wheels may have custom centers with multiple bolt patterns.
  13. No full wheel centers permitted.
  14. Transmission coolers are permitted and must be fastened inside of the car.
  15. Transmission cross members may construction out of 2” x 2” square tubing and welded to the inside of the frame using no larger than a 6” bracket on each side.
  16. Aftermarket gas and brake pedals are permitted.

Fuel / Battery

  1. Stock gas tanks are not permitted and must be removed from stock location.
  2. Aftermarket gas tanks must be relocated and fastened inside the car and located behind the seats.
  3. All fuel lines must be leak free and secured in a safe manner.
  4. Cars equipped with an electric fuel pump must have a shut off switch located so that it can be reached by an official outside of the car.
  5. Car battery must be relocated to the interior of the car and fastened securely.
  6. Battery and gas tank must be covered before entering the arena.
  7. Officials have the right to deny any car that they feel is unsafe for competition.

Fix-It Plates

  1. Fix-it plates will be permitted on previously run cars. Damage must be visible.
  2. Plates may be no larger than 4” x 6” x ¼”.
  3. Fix-it plates must be welded to the outside of the frame.
  4. Maximum of four (4) fix-it plates permitted on each car.
  5. On previously run cars, the front may be pulled back to stock position but cannot be pulled further than stock position. If officials feel this rule has been broken, the fix-it plates will be sliced.