Here are all of the rules for everyone who would like to participate in the Trekfest Demo Derby. Follow the facebook page for more details and to get in contact with us!
June 24th 2017 Riverside demo Stock Compact Rules
600 , 300 , 100
• All cars must be stock unless otherwise stated in the rules.
• No welding anywhere unless stated in the rules.
• 111’’ max wheelbase for FWD cars, no rwd cars.
• 4 or or 6 cyl engines.
• All glass, plastic, chrome and interior must be removed from car.
• All decking in station wagons must be removed.
• No split rims or studded tires. Foam filled and stuffed tires are ok. Valve stem protectors are allowed.
• All cars must have working brakes.
• All trailer hitches and braces must be removed.
• All hoods and trunks must open for inspection!
• May use motor or transmission of choice but must be in stock location.
• May chain motor and transmission mounts but in no way can it strengthen the frame. NO WELDING OF MOUNTS! NO SOLID MOUNTS!
• Radiator must be in stock location.
• May use a transmission cooler but must be mounted in safe location.
• No protectors of any kind allowed!
• 4 point safety cage is allowed consisting of a dash bar, rear seat bar and door bars. Mandatory that you run a rear seat bar from post to post behind driver’s seat. If you do not at least have a rear seat bar you WILL NOT run. NO kickers or down bars. Dash bar cannot be against firewall.
• Halo bar may be ran but must be bolted or welded to the rear seat bar and CANNOT go to floor. Halo bar may only go to floor if car is a hard top (no center roof pillar).
• NO part of the cage may extend past the rear seat bar with exception of the halo bar for mounting purposes.
• Must run at least 1 wind shield bar, 3 recommended. Bar can in no way strengthen car. NO rear window bars allowed.
• Batteries must be moved inside car and bolted to passenger floor board. Battery must be covered and must be bolted in place using steel strap and bolts no smaller than 3/8. No more than 2 12-volt car batteries allowed.
• Gas tank may be left under car if it is ahead of rear axle although it is not recommended. No full size gas tanks inside cars. Recommended that a steel fuel cell be ran inside car and bolted down securely to floor in either rear seat area or passenger floor boards. Tanks must be secured with steel strap and bolted down with bolts no smaller than 3/8 and must be covered.
• You may run shifter through floor and you may run switch panels.
• No altering of steering columns.
• Bumper must be stock to the car it came with! If your car came with a plastic or aluminum bumper you may change it to a metal compact bumper like one off of a lumina.
• Bumpers CANNOT be seam welded, capped or stuffed. You may trim ends of bumper but cannot be sharp.
• NO homemade bumpers!
• Rear bumper must remain stock or can be removed.
• You may attach front bumpers in ONE of the following ways. 1. You may weld OR bolt bumper directly to front of car with no added metal. 2. Cars that come stock with bumper shocks may push stock shocks back and can weld bumper to shock. 3. Cars that do not come with bumper shocks may use pipe NO bigger than 3’’by 3’’ ¼’’ wall square tube and can be NO longer than 4 inches to take place of bumper shock. This tube can be welded to the bumper but must be bolted to the car. NO welding of shocks to the car itself, only to the bumper to help keep them on the car. No other types of shocks may be ran.
• Suspension must be stock and must be functional. No clamping of struts or spring spacers.
• No strengthening of any steering or suspension components.
• NO WELDING ON FRAME OR BODY SEAMS ANYWHERE!!!! Any welding found and you will be loaded or run weld class.
• No fix it plates allowed anywhere on frame or body!
• No body creasing anywhere!
• Front cradle mount on unibody cars or front body mount on full frame cars may run from mount up through hood with threaded rod no bigger than 5/8’’. No spacers may be used. No welding of rod anywhere. Top washers to hold hood down cannot exceed 3’’ by 3’’ by ¼’’ washer.
• All other hood hold downs must consist of double looped 9 wire or single looped chain sheet metal to sheet metal. Hood must be tied down in at least 4 spots but no more than 6.
• Must have at least one 12’’ hole cut in hood in case of fire.
• Driver’s door may be welded solid at rear seam only. No other door, trunk, or hood seam welding allowed. You may run up to a 6’’ wide piece of flat strap across driver’s door, not to exceed 4’’ past rear or front door seam. No other pipes, bars or grader blades allowed on outside of door.
• All other doors may be either 9 wired shut with 2 double loop spots per door seam or 1 single wrap chain per seam.
• No wedging of trunks. Trunks may be tucked but 60% of trunk must remain in stock location.
• Trunks maybe secured with 6 spots of double loop 9 wire or 4 spots of single loop chain. Must be secured in at least 4 spots sheet metal to sheet metal only.
• If trunk cannot open for inspection it must have a 12’’ hole cut in lid for inspection purposes.
This intended to be an easy build class to go out and have some fun without spending weeks in the shop. Rules will be enforced! If it doesn’t say you can do it don’t assume you can. Call first with any questions. Judges decisions are final!
For any questions call Kevin Rodgers 319-460-0126.
Any year stock build rules
1500, 750, 250
$50 dollar day of show
IF 20 OR MORE STOCK CARS ARE REGISTERED BE PREPARED TO RUN HEATS. BRING
EXTRA TIRES, RADIATORS, 9 WIRE, ETC…
***If car does not pass inspection or driver is unwilling to change car to pass inspection –
absolutely no refunds!!
1. All rules will be followed, or you will not run!!
2. Any American make sedan or station wagon can be run. No 1973 or Older imperials or
Imperial sub-frames/ frames, 4×4’s, ambulances, hearses, trucks, limousines, etc…
3. Drivers must be 18 years of age and have a valid driver’s license. Ages 14 –17 must have a
notarized permission slip and some form of driver’s license. The person that signs in as the
driver/passenger- must be the driver/passenger for that event!
4. Driver must wear seat belt and helmet, along with eye protection.
5. ALL drivers and crewmembers must attend the drivers meeting.
6. DO NOT hit the driver’s door! Sometimes this happens, but if it looks intentional or
carelessness, you will be disqualified. Don’t use your door as a shield; it may cause you to get
disqualified. No hot rodding in the pits, keep it at an idle.
7. Any open driver’s door or fire will cause disqualification. If in heat, you may fix it and come
back in the consolation.
8. NO sandbagging or holding!!! You will be disqualified! You are given 20 seconds for
aggressive hits, 1 minute for restarts and 1 minute if you are hung up.
9. No alcohol in the pits, if anyone is caught with alcohol, they will be disqualified, this includes
their pit crew.
10. Cars are subject to re-inspection before any prize money is handed out. There is a $150
pro-test fee and you must be a driver in order to protest. Only drivers in the feature event may
pro-test another car. Driver must have cash in hand directly after feature event in order to
pro-test. Any controversies will be taken up at the drivers meeting.
11. Any questions give us a call! If it doesn’t say you can do it, don’t do it. Call 1st!! Judges
decisions are FINAL!!!
1. All cars must be stock, unless modification is stated in the rules.
2. All glass, plastic, chrome, and interior must be removed from car before arriving to the derby.
3. All decking in station wagons MUST be removed!!!
4. Tires no bigger than 16 inch, No split rims, No studded tires. Foam filled or Doubled tires
OK!!! Valve stem protectors OK. Tires may be screwed to rims.
5. Driver must have a fire coat or non-flammable jacket to wear while driving in event.
6. Driver must have safety approved glasses or face shield. Driver needs to have FULL faced
7. You must use a radiator and it must be in stock location. All cars must have working brakes.
9. A-arms, ball joints remain stock.
10. All trailer hitches and braces must be removed.
11. Original gas tanks must be removed. You must use a boat tank or well made fuel cell and it
must be properly secured and covered.
No gas cans. Plastic gas tanks must be placed in a metal box!! Fuel line must be secured and
fastened properly. Keep away from exhaust. Place fuel cell behind driver’s seat or in the center
of the car where the back seat, use to be.
12. Transmission coolers will be allowed, but must be safe and properly secured.
13. Batteries must be moved to passenger floorboard close to transmission. It must be properly
secured and covered.
14. You must have a number In Bright colors on each front door and must have 15”x 15” roof
sign with car number on it for judging and recognition of car.
1. NO welding will be allowed on any part of the body or frame. The only welding allowed is in
the below rules. If your car is found with any weld, other than what’s allowed, you will not run!!
2. Doors may be chained, wired, bolted or welded shut and must be sheet metal to sheet metal.
Welding of Outside of doors only will be allowed. Use no bigger than 3 inch wide material for
welding doors shut. All door except for driver’s door, can only have a total of 12 inch strip/plate,
etc, welded on the vertical seams only, nothing more Drivers door may be weld shut inside and
outside solidly with no bigger then 3” strap material.
3. For driver’s protection, you may weld a bar behind the seat from doorpost to doorpost, you
may also have a bar across your dash, dash bar must be at least 8 inches from back of engine
and 4 inches up from transmission tunnel, you may connect the dash bar to bars behind seat
across the inside of doors only. Cage Materials can be NO bigger than 6X6 inch tubing. You
may also weld your steering column in, you can also weld a plate across the driver’s door not to
exceed 6 inches past each seam. You may have a roll loop behind the seat, which must be
welded to the top of the cage or Top of frame and welded or bolted to the roof , if you attach roll
loop to frame or floor, that will count as your down bars.– no kickers going to the back or front of
the car. Back of cage including roll bar, can only be in front of body mount behind back seat.
Mopars can only be in front of spring mount. You will be allowed 2 down bars on the inside on
driver’s and passenger’s door going down from the inside cross bar. Down bars must be behind
inside of front door interior seam or will be cut out. Roll Loop will count toward down bars. Only
2 down bars total on each side. Welded to the top of frame only, no added metal!
Gas tank protectors must be NO wider than 30 inches across the back- 6inch tall on back with 2
inch gap between all sheet metal around back side of gas tank protector. Tank Protector can
only be attached to back seat bar with nothing attaching up or down to body/frame/ cage. You
may gusset to back seat bar only. Must be 4 inches off floor and stay below where speaker deck attaches to floor! You are
allowed a loop up off your gas tanks protector, but must be straight up and not angled. Nothing
higher up then 4 inches above gas tank. Loop can’t attach to anything but the tank protector.
4. Bumpers are interchangeable. Any Automotive bumper and bumper brackets may be used on
any car. No homemade bumpers or brackets. You may trim bumper ends & fold them around.
Bumpers and brackets may be welded solid. Bracket are interchangeable from car to car. You’ll
be limited to a 12 inch bracket from end of frame. Brackets must stay factory length or can be
shortened but you CAN’T stretch out brackets to make longer. Bumpers may be stuffed inside of
Original bumper only. Bracket can be welded solid but can only be welded to 1 side of the
frame, don’t wrap bracket unless it came out factory that way. NO Brackets may be stuffed
inside of the frame rail. Front brackets on front only!!! Front Bumper can NOT be any higher
than 30 inches from top center. Rear bumpers can NOT be lower than 16 Inches from top
center of bumper. This helps cut down the issue of roll over and safety issues. Chrysler Pointy
bumper only allowed on the car they came on!
5. If you hard nose your bumper, you are only allowed a 4” wide ¼” thick flat plate for a bracket.
You may wrap the end of frame completely around but only 4” back on frame. Nothing else can
6. **Hood must have at least a 12-inch square hole cut out in cast of fire. ! You may have up to
3/4” all thread –2 may be used from the hood down to the frame, but must go through the front
body mounts. Hood plate not to be bigger tan 5X5-1/4”. Hoods must be open for inspection.
Hoods and trunks can only be held down/shut with #9 wire. .
7. You can fold hoods or trunk decks over but 60% of the hood or trunk lid must be in factory
location. You are allowed to tuck of wagon roof! Roof of wagon may be wired down with #9 wire
only. Unlimited use. Tailgate on a wagon can only be wired shut with #9 wire. Unlimited use of
8. Hoods and trunks will be allowed ¾ washers in 8 spots to be welded to sheet metal for #9
wire hold downs. The washers can only be welded on the hood/trunk lid and on the top flat area
of fender/quarter panel. Tailgate will be allowed the same. Washer must remain flat. Washer
must have a 2 inch gap between washer and locations. You can add additional spot of #9 wire
but without use of any washers! No other useage of washer for wire anywhere else on the
10. Body mounts must remain stock, but if bolt is rusted out or broken, you can only wire the
body mount with #9 wire. No added body mounts allowed! Do not remove any part of the factory
body mount including steel shim that inside rubber mount!
11. Front all thread in radiator support mount can be replaced with steel mount, no bigger than
2×2 and must stop at bottom of radiator support. No welding!
12. Suspension must be at stock. Leaf springs must be stock, NO adding springs. Stock springs
only! You can put spacers in sagging coil springs to get your height. You can loop chain or wire
from rear end or springs to frame in 2 spots on each side. No bigger then #9 wire or 3/8”chain or
cable may be used. You may double your coil springs. Leaf spring cars will be allowed 5 clamps
on each spring pack. The clamps may be home-made. Home-made clamps not to be larger
than 2 inch wide by 5 inches long.
Gm wagons will only be allowed 9 leafs. Mopar and fords may have 6 leaf springs. No add on or
bolt on springs. All Leaf springs must have a 2 inch stagger in the rear and 1 inch stagger in the
front of pack, minimum stagger. . Leaf spring packet must mounted in factory location.
13 .Rear end control arm must be stock and can’t be re-enforced. You may NOT shortened or
Lengthen control arms.
14. Use any rear end of choice. Rear ends may be re-enforced, full spools, aftermarket axles,
15. Front A-arms will be allow 2X5 -1/4” strap to weld down A-arms. Nothing else can be used!
16. 98-02 Ford may use bolt in brackets for conversion of rear end on upper control arms.
Factory Lower mounts can be used or you can remove factory mounting bracket and replace
with another factory 80’s & newer ford mounting bracket. This can be welded to side of frame
but must not re-enforce frame. Weld in factory location only.
17. Engine mounts may be welded to engine cradle. Engine must be mounted in stock location.
You may use a front lower engine cradle mount to mount your engine and pulley protector. You
may weld a ½” flat plate under mount to gain steering clearance. Plate can only be as wide as
the motor mount. NO full cradle will be allowed!!! Tranny may be mounted solid and or chained
into place to cross member
18. Use motor and tranny of choice, motor must be in stock location. You must use a factory
cross member for mounting transmission. This can be out of another car. Cross Member can be
weld to frame using angle iron 3X3-1/4’ no longer than 5 inches. Can Not re-enforce frame with
19. Tie-rods, A-arms, ball joints and all other steering/suspension must remain stock. Steering
column may be changed to aftermarket shafts. Steering knuckles, homemade steering shafts,
etc are ALLOWED.
20. You may cut wheel wells for tire clearance. The rear quarter panel is considered part of the
rear fender. May roll fender but no welding or bolting.
21. We reserve the right to drill any part of a car frame/body/etc) for inspections.
22. For safety, ** Hardtop cars may have a 4 inch wide strap welded at the door post to the roof.
23. You can run shifter through floor and you can have a switch panel. You may also have a
hand throttle. If you are running an electric fuel pump – must be hooked up to your ignition
switch – so when your car shuts off – it shuts off.
24 Body shaping is allowed. Just be prepared to have sheet metal drilled if we can’t see.
25. NO Distributor cap protectors! Tranny braces, steel tail housings, steel bell housings, etc.
Manual tranny may use a steel bell housing for protection of clutch breakage only.
26. Gas tank protector are allowed, no wider than 30 inches, must be at least 2” away from rear
sheet metal. It must run straight back from rear seat bar in center of car and must be 4” off the
floor. Gas tank can’t be connected to protector unless gas tank is mounted to top of protector
and not to floor. Protector must be free floating- not connected to anything but back seat bar!
Gas Tank must be mounted inside of protector or on top of protector. If Tank is mounted to floor
it can’t be mounted to protector.
27. Aftermarket gas pedal and brake pedals are allowed as long as not used to re-enforce car!!!!
Must be mounted to cage or body. Not to frame or used as a gusset to re-enforce the car in any
28. No frame shaping except to beating in the sides only of rear arches over tires. No Squaring
of Frames. Nothing else.
29. You must have 2 bars or wires from roof to dash in windshield for safety. Window bars can
only be 3 inches wide with 5 inches on roof and 5 inches on dash/firewall.
30. Slidng Drive shafts will be allowed along with a pinion brake.
31.You are allowed unlimited use for #9 wire. This is to be used to tie frame rails, wire body to
frame, bumpers to body,etc. Do NOT stuff frames with wire, no wedging of wire blocks to
re-enforce the body, etc. If you are found with this done, you will not run.
Wire may come off cage to body and or frame. No washers allowed when using the wire except
for what’s stated above.
RUST REPAIR & FRAME REPAIR:
32. You may repair rusted out sheet metal with sheet metal only. Leave the rust in place and
repair over it. Only the floors inside the driver’s compartment can be repaired. No other sheet
metal can be repaired.
- Weld midsize rules
850, 425, 225
111’’ max wheelbase for FWD cars, 108 max for rwd cars.
Tranny coolers are ok. must be mounted securely inside car.
No gas tanks under cars. Must be mounted securely inside car behind drivers seat or passengers floor board and covered.
Batteries must be mounted to cage or secured to passenger floor board.
must have a working seat belt.
Engine: any 4 or 6 cyl engine, engine cradles ok, carb protectors ok, may change out upper and lower motor mounts and weld solid (do not reinforce frame by doing this.)
Tires: No split rims or studded tires. Foam filled and stuffed tires are ok. Valve stem protectors are allowed. Multi lug centers ok, rim protectors ok.
Bumpers: factory automotive bumpers and homemade bumpers are allowed. Bumpers can be seam welded. Loaded bumpers are allowed because of high bumper prices. Homemade bumpers will NOT have a extreme point/wedge must have 2 in wide flat spot at end of point! Point can only protrude 10 in from rear of bumper and must tapper off 15 in to the left and right from center of point! This rule will be strictly enforced for drivers safety.
You may have 2 3in wide by ¼ in straps from bumper to radiator support.
You may have 2 3x3x5 ¼ in straps from bumper to frame, 1 top 1 bottom to mount front and back bumper.
Bumper Brackets: you will be allowed 12 in of 3×3 square to mount your bumper to your car. You will be allowed 4 3×6 patch plates per frame rail 1/4 in thick. May be 1 solid plate of 24 in. You will be allowed to weld all seams firewall forward. You will be allowed 1 3/8 chain or 1 1in allthread per side from frame rail to sub frame welded or bolted through.
Suspension: suspension may be welded solid, any 5 lug rearend may be used You may have a rearend brace welded onto the factory rearend housing, struts may be reinforced or homemade but must be same size as factory strut.
Radiator: You may have a radiator guard in front of radiator, made out of expanded metal. No wider than radiator, can be bolted or welded to core support.
Cage: Your halo may be welded to the body but still be attached to seat bar this counts as 2 of your 4. Halo must be vertical to car. Side bars no longer than 72 inches.
You may add 4 vertical down bars.2 per side, must be straight up and down. They must be welded to your door bars and straight up and down. May be welded to body but there can only be 4 bars attached to the body. Your roll over bar counts as two. 2”x3” max size allowed. These bars may attach to body but not conceal any body mounts. These bars are for driver’s safety, and not to strengthen car.
U may have a 30 in wide gas tank protector off your rear seat bar, may contact sheet metal but cannot be welded or bolted through sheet metal.
Must have 2 front window bars from roof to firewall/strut tower 3×2 max.
Trunks/Tailgates: may be welded 5 on 5 off 3 in wide ¼ in plate, but must have at least a 12-inch square cut in them. 4, 1 in all thread may be used in trunk welded to side of frame rail.
* Wedged cars are allowed.
One rear window bar no bigger than 3×2 halo to sheet metal no farther back than deck lid seam.
Hoods: Must have a 12” hole cut if not using headers thru hood, hood must be open for inspection. Hoods can be fastened by 8- chains or 8- pieces of 1″ max all thread. Only 2- pieces can go thru frame (core support).The other 6 must be sheet metal to sheet metal only.
6″ by 6″ max plates for hood washers. You may bolt hood cut out back together with 10- 3/8″ bolts max.
Doors: drivers door may be welded solid and skinned with sheet metal, all other doors will be welded 5 on 5 off 3 in wide ¼ in plate