“Making an Impact at your event”

                    IMPACT DEMOLITION DERBY



NO changes or alterations of rules may be made except by IMPACT motorsports


Email Greg Johnson- greg@impactmotorsports.ca

Office phone (705) 357-0350


IMPORTANT:  Each driver and mechanic must sign in at registration desk the day of show and have their cars inspected solely to determine compliance with those rules and not for purpose of determining safety of car or participant


I have read the rules and acknowledge to have received a copy of same and agree that the decision of the Judges is final.  I agree to participate at my own risk absolutely.  It is a condition of my participation in the contest that I sign a further release of liability in the form to be supplied by Impact Motorsports and I agree to sign such a release.

SPECIAL NOTICE: No alcohol or drugs allowed in any restricted (PIT, HOLDING OR PERFORMING) AREA.

Any violations will result in disqualification of CAR, DRIVER AND CREW.  NO REFUNDS!!!

The IMPACT Motorsports Demolition Derby is promoted as an unusual spectator attraction.

If you are unclear of a rule email or call our office for clarification.

DRIVERS and MECHANICS are subject to and must obey the following rules and regulations which are set up by the promoter and the track where this event is being held:


  1. Each driver must be a minimum age of 16. All 16 & 17 year olds must have a parent or guardians sign an insurance waiver. Guardian must provide photo ID.
  2. The original registered driver must drive that vehicle for the entire event. No substituting drivers.
  3. Impact Motorsports or promoter reserves the right to approve or reject any and all entries, drivers or pit persons.
  4. Only drivers and mechanics who sign the release sheet will be permitted in the pit area or on the track. Driver and one (1) pit person receive free pit passes upon registration of car on day of show. All drivers and pit person must wear supplied pit passes.
  5. IMPACT Motorsports, the promoter, track owner or fair association will not be held responsible for any cars, parts or personal property before, during and after the show.
  6. Each competitor to carry their liability insurance. Impact Motorsports policy does not cover participants.
  7. Drivers and mechanics should report to the Impact Motorsports sign in area minimum of an hour before the scheduled start time.
  8. NO pit person under the age of 16. IMPACT MOTORSPORTS reserves the right to ask all pit persons for photo ID. All drivers and mechanics are in the pit area at their own risk.


Type of Car


  1. Any 4-6 cylinder hardtop automobile or station wagons. 6 cylinder cars less than 106” will compete in the mini class. 4 Cylinder cars do not have a wheel base limit. NO SEDAGONS!!!!!
  2. Any car any year. Must be within the wheels base.  No 8 cylinder cars. Any car over the wheel base cant have a 4 cylinder engine transplanted into it to meet the guideless. NO AWD OR 4×4 CARS.
  3. If there is in any question regarding the participant’s vehicle it is the driver’s responsibility to prove make, model, year, engine etc.



Risk: Demolition derbies are hazardous and high-risk sports; therefore, anyone with a health condition, i.e., concussion, heart problems etc. or who is pregnant should not compete.

Protect yourself. Work Boots, sport equipment – e.g. neck brace, knee pads, shoulder pads, hip pads etc. are recommended.

No bare exposed skin.  All drivers MUST wear long pants/coveralls or long sleeved shirts. No exceptions.

Working seat belt and racing helmet are mandatory.  Helmets MUST have chin straps. Goggles or face shields are recommended.

BRAKES – Vehicles must have dependable brakes and must be working properly before entering pen at all times.  All boundaries must be observed.

NO DRINKING OF ALCOHOLIC BEVERAGES ON TRACK, EMERGENCY VEHICLE AREA OR IN THE PIT AREA.  Any driver or pit person under the influence of alcohol or drugs allowed in the pit area. This will be strictly enforced.

Competitive aggressive hits!  Careless driving in the pit area could result in disqualification.

All cars are to be removed from the fairgrounds or racetrack immediately following the show.

Additional safety regulations may be imposed, depending on track and conditions.

Any protests must be made within 5 minutes of the last feature heat by another feature driver. Protest fee’s are $100 and are non refundable.

All decisions of the official are final. NO REFUNDS!!

If you think there is a grey area in these rules contact our office and we will put them in black and white for you. NO REFUNDS




Preparation of car MUST BE DONE prior to arriving at the event.  2017 PRO mini class 4 & 6 cylinder cars under 106” wheelbase

ALL drivers and pit persons MUST sign the event insurance waiver. Failing to do so will result in disqualification. Pit passes must be worn at all times. Alcohol not permitted in the pits. Everyone around your car MUST sign the insurance waiver and wear their pit pass.
 2. Flammable Material
All carpet, headliner, door pads and ALL other flammable material MUST be removed from inside of car. Front seat and dash board may be left in place. It is suggested that the plastic bumpers covers be removed. They don’t do anything anyways.
 3. Glass/airbags
All windows, mirrors, airbags & trim, must be removed prior to derby event. No loose glass smashed into the bottom of doors. DRIVERS SAFETY
 4. Doors & Numbers
Driver’s door must be covered 3/4 with white paint. An optional roof number plate may be securely installed.


 5. Fire Extinguisher
Must be within reach of the driver, must work and have a proper working gauge. Please check gauge on the extinguisher before arriving for the event. Must be easily removed.

 6. Battery

 Battery must be moved to front passenger floor board or in passenger front seat and securely fastened in a box/container clear of all fuel sources. Following inspection it must be covered with a non-flammable shield such as rubber mat or steel cover. Max 2 batteries if its a  regular car battery. If you use a truck/farm battery you can only use one battery.

 7. Gas Tank

Stock gas tanks must be removed. Steel marine tank, custom steel fuel tank, or certified racing fuel cell ONLY.  Plastic tanks MUST have a rubber floor mat mounted between the floor and tank. All tanks must be securely fastened down (bolted) in the middle of the back seat area. Tank must be covered with a non-flammable material (rubber mat) after inspection. No movement to occur during inspection. Leaks will result in disqualification. GAS TANK PROTECTORS can be welded to the seat bar and extend  to the rear seat area. Bar MUST be 2” away from the sheet metal on a fresh car and MUST not alter the sheet metal to achieve this. Protector bars MUST be 8” away from the doors and can’t be attached to the sheet metal. GTP to be free floating off the seat bar. GTP must be 6″ away from the rear window bar on a fresh car. GTP NOT to extend towards the rear window any higher than the package tray/speaker shelf. If the speaker tray is removed builder must prove where the factory location was. Gas tanks that are not secure will have to be altered. NO UNSAFE FUEL TANKS. NO “JERRY” CANS. MUST BE A FUEL CELL OR BOAT TANK.
 8.  Fuel Lines
All fuel lines must have leak proof fitting with steel or rubber lines (no clear lines). No exceptions. Lines should run inside car. Leaks will result in disqualification. All connections MUST have hose clamps to eliminate fuel leaks. If your fuel system isn’t safe you wont run.

9.  Fuel pump

Must have a safety shut off switch marked in red located on roof in center of the windshield area for officials use. Switch to control fuel pump only. Driver’s safety. MANDATORY. This rule is for fuel injected cars only. Does not apply to carbureted engines. Must be able to be seen from 20′ away by the flag staff

10. Trunk & Tailgate

Trunk/tailgate maybe welded solid. If trunk is welded closed a 15” square hole must be cut in center of trunk for officials’ inspection. Trunks/tailgates can be wired or chained in 4 places to rear bumper. Maximum of 2 spots with threaded rod maximum of ¾ inch holding the trunk shut. Max washer size 4X4 for threaded rod. Trunk/tailgate can be welded to the bumper with 2- 2″  metal straps. Trunk can be wired to the rear bumper in 4 places.  NO SEDANGONS No threaded rod from floor/frame to roof.

11. Hood

Hoods are not mandatory. Without hood – use electric fan only – fans directly connected to motor must be removed. A 12” opening must be cut in the center of the hood. Hoods must remain open for officials’ inspection. Hood must be fastened down in maximum of 8 places including 3/4″ threaded rod or with seat belt strapping, wire, chain only, or bolted to fender. Hood latch should be removed. No welding hoods closed. Hoods/rad support can be wired to bumper in 4 places. These spots will account for 2 of the 8 spots. No limit on 3/8 bolts in hood panel only. Hoods can have angle iron welded to the fender top and hood. Every bolt is considered a fastening spot. No larger than 2X2 angle. 3/4″ threaded rod in the rad support can be sleeved with max 1″ square tub and can be welded to the frame. Bolts or rod thru hood can only be directly welded to the cowl/strut tower/inner fender. NO METAL ADDED. NEW RULE FOR 2017.

12. Body Panels

Metal may be cut from around wheels for clearance.  Front & rear quarter panels may be bolted with up to 5 bolts per panel – maximum 3/8” bolt. Washers no larger than 1/2″

13. Door Fastening

All doors must be fastened shut with wire, straps, chains or spot-welded 1” every 12” or 6 – 3”square plates welded per door. Window screens on drivers door window are not permitted. Driver’s door may be welded solid. Doors do NOT need to be welded. Driver’s choice.  Doors tops may be rolled – 1” of weld every 12” max. NO ADDED STEEL.  NEW FOR 2017 DRIVERS DOOR REINFORCEMENT MANDATORY.  Plate on the outside, door bars inside, cement. ETC
Outside of car may have a 12” X 60” X ¼” max steel plate applied to driver & passenger doors, bolted in 8 locations with a max of 3/4″ bolts or spot welded 1” every 12”. Door plates can be thru bolted into the cage.  NO “C” CHANNEL OR ANGLE IRON.  NEW FOR 2017 DRIVERS DOOR PLATE MANDATORY. Drivers door can be reinforced in any form but not reinforce the frame. Plate on the outside, door bars inside, cement. ETC

15. Roll bar

ONE roll bar up each door frame, inside or across outside of the roof. Roll bars going across the roof can be bolted/welded to the roof . The roll bar may be welded or bolted to the inside of rockers or to the frame. Down bars (MAX 4 DOWN BARS TOTAL) off the seat/side bars can extend down to the floor/frame. “feet” on bottom of down bar no bigger than 5″X5″.  MUST no way come in contact with transmission/engine cross member. If bolted in the washers on bottom no larger than 2″X2″.  ONE additional bar may be added behind the seat welded or bolted from roll bar to roll bar. ONE bar may also extend down the inside of both front doors and be welded to the dash bar for safety creating a square around the driver. No excessive use of materials. SINGLE bars only. Not mandatory. Cage not to extend past back of driver’s seat. Bar over roof cannot be attached to any other bar on the car except the rear seat bar. Not to the rear window bar, dash bar, side bars or front window bar. A bar can run between the seats joining the dash and seat bar together for mounting the shifter. This bar must be attached to anything else and must be 12″ off the floor. Drivers door reinforcement is mandatory. Outside door plate or inside door bars are MANDATORY.  ALL Cage/halo/GTP material  4″ max round or square tubing. DOWN BARS TO RUN STRAIGHT DOWN
16. Windshield/
          rear bar
Must have a minimum of a single steel bar or chain from the cowl to the front portion of the roof bolted or welded. Front window bar not to reinforce the car but only to protect the driver. Front window bar must be 12″ from the halo bar.  Rear window bar max of a 2X2 bar welded/bolted from the roof to the center of the trunk area. Rear window bar must be 12″ away from the halo bar. Rear window bar cannot be fastened to the rear bumper or trunk floor. No rear window bars on hatchbacks or wagons.

17. Dash bar

One Bar Max 4” square/round tubing mounted door frame to door frame. Dash bar must not touch the center section of the fire wall. Down bars off the dash/side bars can extend down to the floor/frame. MUST no way come in contact with transmission/engine crossmember. If bolted in the washers top and bottom no larger than 2′. Not Mandatory. Driver Safety.
18. Interior Modifications
No welding of any inside body support seams or firewall seams. Large holes in car floors must be repaired with same gauge metal and securely fastened. No reinforcement. Drivers seat must be tied into roof or door post. Broken seats may result in disqualification.

19.  Bumpers

Appropriately sized car bumpers/re bars only.  Bumper shocks may be reinforced with flat bar or tubing to help keep bumpers on.  Can do whatever you want 6″ on the end of the frame to keep the bumper on. Can use full size car bumper no wider than front tires.  Seems can be welded and insides loaded. Shocks and mounting brackets must be off the style of car you are running. No frame shortening. Bumpers can be hard nosed. NO GRAY AREAS. NO WELDING OR ADDING ANY STEEL TO HOLD BUMPER ON 6″ from the end of the frame. Gussets from frame to bumper not to exceed 3″ across. MUST be welded directly to the end of the frame. If you wish to run just a piece of square/round tubing instead of a bumper it can’t be any wider than 50″ and be 4″X4″ or 3’X5″. All other rules apply to fasten it to the frame. Front bumper can be wired to hood in 4 places. Rear bumpers STOCK. No home made front point. Tube must be flat and car bumpers to have stock point. If using square tubing the ends MUST be cut on an angle and not have sharp ends. If you don’t understand this rule contact Greg for details. 

20.  Radiator

Overflows must point straight down. Rads may have max 2”X2” 1/4″ thick angle iron placed on 4 sides of the rad for protection. Angle iron maybe bolted to the rad support in 6 spots OR be welded to the rad support only. NO more than 10″ of total weld. A thin mesh screen can be place in front of the rad and be welded to the angle iron. Can use LIGHT wire screen (Approx 1/8″) in front of the rad or stock AC condenser NOT both. Bolted in only with max 6 3/8″ bolts. NO WELDING SCREEN IN. The is to protect the rad not  to reinforce. Too thick of metal or size will have to be altered. May use aftermarket rads. Rads must be under the hood in factory position. Rad protectors must be directly around the rad Not in front or on top of the rad support. NO WIDER THAN THE RAD.
21. Transmission Cooler
Is permitted and must be secured in engine compartment. Transmission dipstick must be securely fastened, wired down or have an overflow tube pointing straight down away from drivers or spectators. OR May be re-located to directly behind driver seat, bolted to the back bar and completely covered to the floor with a tin shroud. A minimum of two 1” holes must be made in the floorboard directly below cooler for drainage. Hoses must run straight down under driver seat and be completely covered with non-flammable material. Hydraulic hose with pressed fittings only, must be rated for 250°F+. Hydraulic hoses must be marked as such by manufacturer. Hydraulic hoses must have pressed fittings only. No other fittings acceptable OR remain stock. NOT to reinforce car.
22. Suspension
Suspension must remain stock can be solid without reinforcing the frame or suspension parts.  No spring blocks or added helpers. Gears may be welded. Steering columns, drive shafts and rear sway arms may be altered but not reinforced. Ball joints, struts, control arms and steering linkage must remain stock. NO INTERCHANGING STRUTS.  STOCK axles, STRUTS and all steering/suspension components. No coil spring cars converted to leafs springs. Rear ends can be swapped but not to reinforce car. NO welding on rear end except gears. MUST use stock mounting points. Parts may be interchanged with stock style mini car parts-TIE RODS maybe reinforced with angle iron/square tubing. A 3″X3′” MAX square tube can be welded to the frame behind the front strut only. Must be 1/4″ away from the strut on a fresh car. Strut cylinder can be  welded to gain solid suspension and ride height but not to reinforce the strut itself. THIS IS FOR FRONT AND REAR NEW 2017. No reinforcing cross members. No truck rear ends. 5 lug rear ends only. STOCK AXLES. No modifying or welding axle CV joint. NO reinforcing any rear trailing arms or suspension unless proven bent or broke. No threaded rod or extra bolts from rear cradles to body or frame.
23. Frames
Rusty or bent frames may be repaired with steel no thicker than 1/4″ and no larger than 4”X4″. Plates maybe placed and welded on frame or front engine cross member anyway the driver wants. MUST BE SEPARATE PLATES NOT ON LENGTH OF METAL. Max of 4 4″X4″ plates total PER FRAME RAIL. Plates can be positioned any way the builder likes. Just no more than 4 plates per side. Over repaired frames will be considered reinforcement and will result in disqualification. Official’s discretion. No painting of frames EXCEPT Frame repairs must be painted with a bright colour before arriving at the event. All repairs to the frames must be reported to officials before inspection. If not – may result in disqualification. Trailer Hitch must be completely removed. No reinforcing cross members. NO FRAME SHORTENING.  NO FRONT OR REAR KICKERS. NO FRAME TILTING  No hump plates on mini cars. No stuffing  frames. No welding frames to “K” frames. Frame repairs for 2017 are VERY generous-DON’T ABUSE!! 
24. Motor mounts/engine
Engine swaps allowed. Max engine in this class is a 6 cylinder. Engine/trans mounts can be reinforced. NOT to reinforce the frame or body and to similar size to the stock ones. NO EXTRA MOUNTS ADDED. Any excessive or added mounts will result in disqualification.  2 extra chains (3/8″) may run from engine to frame area between rad support and firewall (upper control arm area) in case a motor mount breaks. No extra chains, wires or straps from engine/transmission to frame or body. Reinforcement of frame or body will result in disqualification. Motor swaps cant reinforce the frame in any way. No Exceptions. 1″X1″ (1/8″ thick wall ONLY) square tube can be fastened to the drive train, engine cradle/cross member to protect the drive train. NO more than 36″ in total length and can ONLY be used in one spot to protect ONE component.  EXAMPLE- Can be welded side to side on an engine cross member on a Sunfire ALSO welded to the cross member on a Camry to protect the shifter linkage. These are only examples. Protection can ONLY be used from the strut towers forward. This is NOT to reinforce the body or the frame. If tech deems your reinforcing the body/frame you will be made to cut. No engine cages, dist protectors or trans braces of any kind. STOCK ENGINE CRADLES/SUBFRAMES. NO INTERCHANGING SUBFRAMES. NO EXTRA BOLTS OR BOLT SIZE CHANGES.

25. Body Mounts

All rubber stock body mounts and stock size bolts must stay in place. Increasing bolt size is not allowed. IF APPLICABLE.NO EXTRA BOLTS. NO altering engine cradle mounts/bolts.

26. Tires

Tires may be doubled. No split rims. No screwing tires to rim or studding. No wheel weights. Bead locks allowed if securely fastened.  Any style tire allowed. Tire sidewall must be exposed. No metal bead lock or rim protectors covering the sidewall. No triple sidewall on drive tires. Non drive tires can be solid. Weld in centers allowed. No wheel ski’s. No steel paddle style rims on drive tires. Drive tires MUST be filled with air.