“360 SPRINT CAR DIVISION”

 

 

2008

OHSWEKEN Speedway – Ohsweken, Ontario

TECHNICAL RULES

 

 

1. Engine:  1.1 - 360 cubic inches, plus 1% tolerance for a 363.6 maximum c.i. displacement.

 

2. Block:  2.1 - Steel blocks only. No aluminum blocks. No titanium in engines, excluding valves and valve retainers.  There must be an inspection plug in the oil pan, either a #12AN fitting or a one-inch pipe plug, or the pan may be removed at any time for inspection.

 

3. Fuel Injection:  3.1 - 2-3/16 inches (2.187”) maximum inside stack diameter; at least 3” in length for those used in conjunction with Ford #27-223, Mopar #27-222, or Chevy #27-211 Brodix spec heads.  Larger injectors may be used, but they must have 2-3/16” sleeves at least 3 inches in length installed above the butterflies.  (Note: Due to manufacturing processes, some injector restrictor sleeves may be slightly larger and a tolerance of .005” will be allowed on no more than 3 stacks).  No relief hole may be drilled above the butterfly on any injector.  No throttle body, computer-controlled or plenum-type injectors allowed. Injection unit shall have one shaft operated butterfly per cylinder. The immediate area of the butterfly MUST BE ROUND. No slide or barrel type injectors will be allowed. No down-nozzle injectors may be used.  Only one injector nozzle and one injector line per cylinder is allowed and it must be in the injector casting.  

 

4. Heads:  4.1 - Spec heads, part #27-211 (Chevy), #27-223 (Ford), and #27-222 (Mopar), with American Sprint Car Series (ASCS) stamp may not be altered in any way for performance enhancements.  Intake opening no larger than original opening, except: intake port floors and sides may be ground or polished 3/4 of an inch or no further into port than the closest edge of the closest letter of the ASCS logo. During this polishing, the left side of the letter "A" is sometimes inadvertently brushed with the polish wheel. This is permissible as long as the letter is still intact. During polishing of inlet port, polish marks may go slightly further than the 3/4-inch mark.

 

Intake port at no time may exceed 215 cubic centimeters.  Intake port polishing will be allowed no more than 1-1/2 inches below the bottom of the original seat ring on the back side of the bowl area and no more than one inch on the short side. Polishing will be allowed in the combustion chamber area to avoid hot spot chaffing. Polishing will be allowed in exhaust ports, as long as the original "ASCS" logo is not affected or port shape is not altered substantially.

 

Absolutely no intake or exhaust port relocation, raising, enlargement or reshaping of any type. Valve angle and placement may not be altered in any way on the ASCS spec head or on any other head. ASCS checking fixtures to check the above specifications and dimensions will be utilized. Any internally-repaired ASCS spec head must be re-certified by Brodix. 

 

Non-spec Chevrolet heads will be allowed, but must have an unaltered ASCS

 or Fel-Pro (#8E89208) intake restrictor gaskets installed. Unaltered means absolutely no modifications to bolt holes or port sizing. The ASCS restrictor gaskets must be installed right side up with the logo on top.  The 0.150 inch protrusion must extend fully across the roof line of both the intake port in both the manifold and cylinder head. There shall be no streamlining or re-contouring of intake ports or injectors to reduce the effect of the restrictor gasket.  Non-spec heads must have stock bolt size (3/8”), location (no step studs) and remain within one degree of OEM angle specifications (must accept a stock intake manifold).  Restrictor gasket bolt holes may not be enlarged or relocated.  No Brodix #12 heads. No 18-degree heads. No canted-valve heads. No heads other than the original 23-degree valve angle heads.  A maximum of one-degree tolerance of original manufacturing of valve angle is allowed.

No Air-Flow Research or ALL-Pro heads allowed.

Penalty for altered spec head or altering gasket will be suspension (possibly for one calendar year), forfeiture of all points and monies won for that race, and a fine of not less than $500, payable to Ohsweken Speedway before reinstatement.

 

Front intake manifold bolt and water outlet bolt must have 1/8” hole for tagging engines.

 

Any V-8 U.S.-production engine may be used after the heads have been approved. No V-6 engines will be allowed.

 

5.  Weight:  5.1 - Minimum 1475 lbs. weight (with driver; no fuel added) after the race.  Zero tolerance.  No bolt-on weights will be allowed.  Tubing and nerf bars must be hollow. Cars not meeting minimum weight will be disqualified for that race, scored last, and start scratch in any further race that evening after meeting minimum weight.

 

6. Brakes:  6.1 - Steel, aluminum, or titanium brake rotors allowed.

 

7. Chassis:  7.1 - Any sprint chassis is allowed. The roll cage must be of a four-post design. No dirt champ cars. No elliptical tubing used on or as part of the main frame structure.  No chassis/suspension cockpit-adjustable devices (excluding top wing slider) are allowed.

 

8. Fuel Tank:  8.1 - All fuel tanks must have a bladder (Mandatory). Fuel tanks must be securely fastened. Any means of mounting the tank must meet the approval of the officials. Tank size used for qualifying must remain for all events.

 

9. Wheels:  9.1 - No dual wheels are allowed. No carbon fiber wheels.  Maximum allowed width of 18 inches for right rear wheel.  Maximum allowed width of 15 inches for left rear wheel.

 

10. Carbon fiber:  10.1 - No carbon fiber parts allowed in the suspension or drive line.

 

11. Mufflers:  11.1 - Although MUFFLERS not Required, use of a Schoenfeld Muffler           PN: #112535 is recommended.

 

12. Driveline System:  12.1 - All driveline systems must be properly installed, reinforced and/or covered. A driveline hoop or restraint is required.

 

 

13. Wings:

o    13.1 - Maximum top wing size of 25 square feet with 30-inch side panels. Maximum center foil width 60 inches covered with aluminum. The deepest point allowed in the top surface of the wing will be 2-1/2 inches measured from top front of wing to the front edge of one-inch turn-up at the rear edge (or to the rear edge, if there is no turn-up). Top surface of the wing measuring crosswise must be flat. ONE inch turn-up on 90 degree angle allowed at rear of center foil (maximum). Center foil must be one piece. No split wings or bi-wings. No vent holes. Top wings must not extend beyond outside of rear tires. Top wing sideboards maximum size, 72 inches long and 30 inches tall. Panels must be of one-piece construction. Panels must be fabricated flat so as to have no turnouts or flaps.

o    13.2 - No car will be allowed to compete without top wing.

o    13.3 - Maximum front wing size to be 6 square feet total with a maximum width of 36 inches and 12-inch side panels.  The leading edge of the front wing cannot be further than 20 inches forward of the leading edge of the front axle. One-inch maximum turn-up/wicker bill allowed on front wing. Front wing side boards maximum size, 12 inches tall and 26 inches long with no more than one inch overhang from the center foil front edge to the side board front edge. Sideboards may have front, back, top, and bottom turnouts of no more than ˝ inch. 

o    13.4 - Wings must be fabricated of metal alloys only. NO fiberglass, carbon fiber, or other similar material may be used.

o    13.5 - Two stationary rudders will be allowed to run under the entire length of the underneath portion of the top wing. Maximum height proportions are 1 inch at the front and 3 inches at the rear. Nowhere shall the rudder exceed 3 inches in height.  No body pieces to extend beyond or underneath front torsion tube except hood. Sunshields cannot restrict vision. No wedges or foils underneath race car.  No pieces may be added to the frame so as to resemble, imitate or be specifically designed to deflect, trap or form a wind break of any nature, except those used to cool/protect the motor & braking system. 

o    13.6 - Front-to-rear adjustable (hydraulic) sliders are allowed.

 

14. Bumpers:  14.1 - All rear bumpers must be steel. Diameter must be a minimum of one inch. Minimum .065 thickness, and must be bolted in place (no pins, cotter keys, or pop rivets). Maximum distance from the leading edge of the front bumper to the leading edge of the front torsion tube is a maximum of 8”. The maximum distance from the leading edge of the front bumper to the leading edge of the front axle is 23-1/2”.

 

15. Front axle:  15.1 - Steel only. Minimum sizes: 2 inches by .156, 2-1/4 inches by .120, 2-3/8 inches by .095.

 

16. Nerf bars:  16.1 - Steel only. Nerf bars must be bolted in place (no pins, cotter keys, or pop rivets).

 

17. Protective rock screen:  17.1 - A protective rock screen must be installed in front of the driver with no larger than 2” x 2” square openings.

 

18. Floor pan:  18.1 - Steel or aluminum only.

 

19. Tires:  19.1 - Open tire rule except right rear tire.  Right rear tires are limited to only the approved right rear spec tire by each affiliate series sanctioning at least one event at Ohsweken Speedway during the 2008 racing season. Example: American Racer MC3 (SOS).  Official list of approved right rear tires will be released May 1st by Ohsweken Speedway. Sanctioning bodies spec tire rules will be in effect during special sanctioned events unless relaxed by the sanctioning group.

 

20. Fuel:  20.1 - Methanol or ethanol fuel only.  Top lube or fuel-coloring agents are the only additives allowed; performance-enhancing fuel additives are not allowed. Suspected fuel will be tested at the team’s expense and moneys will be withheld until results are returned to Ohsweken Speedway. If fuel found to contain performance-enhancing additives, disqualification will result in forfeiture of all monies won.

 

21. Numbers:  21.1 - Numbers must be visible and neat in appearance. Numbers must be on both the left and right side of the tail, as well as the side panels and center foil of the top wing. Numbers must be at least 18 inches high, and letters at least 12 inches high, on the top wing. In the event of duplicate numbers, teams may be asked to temporarily add a unique letter to their number in all locations on the car.

 

22. Car's equipment:  22.1 - Use a securely fastened steering wheel with a quick disconnect and removable steering wheel.  A tether is MANDATORY on the drag-link, attached to the frame. Steel drag links, tie rods, and Heim Ends on steering are highly recommended.

No aluminum roll cages, front axles, frames, rear bumpers or nerf bars. All roll cages must be higher than the driver's helmet. Opening on left-hand side of cockpit must be a minimum of 14 inches. Opening on right-hand side of cockpit must be a minimum of 12 inches. No side foils, rudders, or panels are to extend beyond the roll cage on any side. No body pieces are to extend beyond or underneath the race car. A minimum wheel base of 83 inches or a maximum wheel base of 90 inches is allowed. No pop rivets or cotter keys to be used to fasten wings, bumpers or nerf bars to race car. No drilled or hollowed bolts in the car’s steering components.  Only two valves and one spark plug per cylinder allowed. No titanium crankshafts or rods allowed. The sprint car cannot be raced without a hood. If a rear bumper is lost during a race, the car may continue until the car is stopped. If a red flag situation occurs, the rear bumper must be replaced in the allotted time before it can be restarted. Metal fasteners are strongly suggested. A right-hand side head restraint system is recommended; it is also recommended for the left-hand side.  In some cases, head nets may not be required if the seat restraint system is approved by track officials.  Knee pads or other devices to keep the knees from banging around on objects and causing injuries are encouraged. Shoulder/helmet restraints are also encouraged.

 

23. Roll Bar Padding:  23.1 - Roll cage MUST have protective padding. Roll bar padding MUST cover the upper part of the roll cage on both sides, and behind the drivers head. Roll bar padding must also be placed on any bars near the driver’s head. A type of Styrofoam or fiberglass insulation of one-inch thick with an upholstery-type covering is suggested. If arm-a-fax or foam rubber is used, it should be considerably thicker.

 

 

 

 

24. Driver seat:  24.1 - Driver's seat is required and must be securely fastened with a minimum of four bolts. A high back style seat is mandatory. A padded head rest is recommended. A fuel/fume deflector is recommended. Fuel/fume deflector should be wider than driver's seat and extend from floor pan underneath seat to turn-up behind seat. Safety harness and lap belts MUST be routed through the belt holes in the side and back of seat.

 

25. Seatbelts:  25.1 - Seatbelts should have the five- or six-point configuration of attachment to the frame or roll cage. The shoulder belts should be attached behind the seat to the frame or roll cage lower than the driver’s shoulders. Belts should be no more than two years old. 

 

26. Driver's equipment:  26.1 - Drivers are required to wear a proper fitting, SA2000; SA2005; or newer SNELL approved full face Helmet. NO Motorcycle Helmets are allowed. A Flame Retardant drivers suit, Gloves, socks, underwear (unless 3 layer suit is utilized), and shoes are required. A head sock is also suggested. Helmets; Driver Suits;  fastened seat belts, shoulder harness, anti-sub strap, and arm restraints  are to be used anytime the car is started. A head and neck support or restraint system is mandatory. (Use of HANS DEVICE is highly recommended). Safety belts and arm restraints must be no more than two years old and contain unaltered SFI safety labels.

 

27. Cockpit adjustments:  27.1 - Other than wing sliders, NO cockpit adjustable devices are allowed. This includes, but is not limited to brake bias, shocks, suspension, and fuel. No Wiring will be allowed inside the cockpit. All wiring to instruments must protrude from the engine compartment through the firewall and directly into the instrument.

 

28. In-Car Communication:  28.1 - No two way radios are allowed. RACECEIVER One way radios (ch; 454.000) are mandatory.

 

29. Technical Inspection:  29.1 - Cars will be subject to technical inspection at any time at the discretion of the technical inspection committee assembled by Ohsweken Speedway.  All illegal parts will be confiscated; the responsibility for proving the parts are legal rests with the team checked.  All decisions are final.

 

30. Technology:  30.1  No traction control devices of any kind allowed. This includes mechanical and electronic traction control devices. No wheel speed sensors permitted.  No microprocessor-operated or -controlled parts (such as fuel injections, fuel systems, etc.).

 Cars may be asked to disconnect tachometers at discretion of the technical committee.

 

 

 

 

 

 

 

 

 

NOTE:  All sprint car teams which abide by the administrative, technical and procedural rules as set forth by Ohsweken Speedway are welcome. Ohsweken Speedway reserves the right to reject any entry for any reason. Driver changes are allowed as per event rules. All decisions are final.