Year 2004

Bomber Stock Rules

 

1.               ELIGIBILITY

1.            Open to all American made hardtop passenger cars and stationwagons. No convertibles, pick-up trucks, jeeps, or sports cars.

2.            A minimum wheelbase of one-hundred eleven (111) inches will be allowed and must be within 1/2 inch from side to side.

3.            All cars must remain stock for year, make, and model per the manufacturers original specifications. The only exceptions are those contained in these rules.

4.            All casting numbers and part numbers will remain intact and unaltered to be legal. YOU are responsible for what you run.

 

2.            BODY

1.            Body must be complete. No alterations or customizing of any kind will be permitted.

2.            Stock front and rear bumpers will be used. No reinforcing of bumpers. Rear bumpers must have straps attaching the ends of the bumper to the quarter panel of the body, also the bumper cannot be hooked, (1/4 inch plate is recommended).

3.            No crash or nerfing bars allowed. No exceptions.

4.            Stock windshield or minimum 1/8 inch thick Lexan windshield must cover all of windshield opening. Lexan rear window permitted. No other glass or window coverings will be permitted. windshield must be secured by four (4) tabs on the outside mid a minimum 1/8 inch by 1 inch steel strap mounted vertically on the inside center. All installations subject to Tech. approval.

5.            All interior upholster must be removed.

6.            No gutting of interior sheetmetal will be allowed. Front fender wells may be removed. Sheetmetal in doors may be removed to accommodate door bars only.

7.               Adequate firewall must be constructed between fuel cell and driver, mounted in stock location with no less than 20 gage steel.

8.            Interior sheetmetal in trunk area may be removed.

9.            All doors must be welded or bolted shut.

10.          Removal of dash optional. All sharp metal under and around dash must be removed.

11.          Hood and deck lid pins required. 2 deck lid pins may be used if hinges are used, 4 pins required for lift off deck lid. Hoods are required to have 4 pins across the front edge and 2 on the trailing edge if no hinges are used. Full lift off hood and fender combinations are required to have 1 pin on each side at the lower rear of fenders.

12.          Removal of antenna, door handles, exterior mirrors, headlights, taillights, chrome strips, and any other exterior glass mandatory.

13.               Headlight and taillight holes must be covered and show good workmanship.

14.          Stock appearing grill must be in place or 1 inch mesh screen may be used, subject Tech. approval.

15.          Outer fender well may be trimmed to a maximum of 3 inches tire clearance. All edges must be rolled and show good workmanship.

16.               Fiberglass will be allowed for rear fender, and doors ONLY. Fiberglass repair panels must be put over original steel quarter panels and doors.

 

3.                CHASSIS

1.            No alterations, customizing, or reinforcing of the chassis will be permitted. Box tubing may be used to replace rear frame rails in coil spring cars only, no more than 24" from rear of frame. On leaf spring cars box tubing may be used between rear of frame rails only. Max tubing is 2" x 3" with .090" wall thickness.

2.            Sway bar mounting must be stock.

3.            No special shocks will he used. Gas shocks are allowed if they came as stock replacement for your car. One shock per wheel in stock location. Shocks must use stock type mounts.

4.            Caster and camber may he changed by normal methods only No cutting , welding or bending.

5.            All cars will be 6" off the ground at the crossmember or lowest point (pan, frame, rails, etc.). Other parts below crossmembers (sway bars, shock mounts, unaltered steering components, scattershield, driveshaft hoop, exhaust and muffler, etc. must maintain 4" minimum ground clearance.

6.            No spacer plates will be added to leaf springs. You may run uneven amounts of leaf springs from side to side. All leaf springs will be bolted together and U-bolted to the rear end housing.

7.            No on board adjustable suspensions allowed.

8.            All front end parts must be for year, make & model of the car.

 

4.               TRANSMISSION & REAR END

1.            Rear ends must remain stock as per manufacturers specifications. Axle savers permitted. No alterations or customizing.

2.            No locking of rear ends will be permitted. No Detroit Lockers, limited slip, or Positraction will be permitted.

3.            Axle bearings must be welded to axles.

4.            All driveshafts must hp painted white.

5.            Stock clutch and flywheel only. Scattershield, blanket, or 1/4 inch steel plate mandatory for all transmissions.

6.               Transmission must be stock for make and model of motor and chassis being used.

7.               Driveshaft hoop required 12 inches from front U-joint, under floorboard, around diiveshaft.

 

5.               WHEELS & TIRES

1.            You will be notified by Cajon Speedway bulletin as to which tire will be legal for your division. Any unapproved racing tires found on the premises shall result in the car possessing that tire to be disqualified or not allowed to compete in that nights race meet.

2.               Maximum tread Width of any tire shall not exceed seven and one half (7 1/2) inches.

3.            Only heavy duty or spoke steel wheels may be used. No aluminum or magnesium wheels will be permitted. Maximum wheel width will be seven (7) inches.

4             9/16 inch or larger wheel studs mandatory on all four wheels

5             All wheels must be of the same diameter and back spacing. No wheel spacers allowed. Valve stem location is optional. No bleeder valves allowed

6.            All wheel weights will be on the inside of wheels.

7.            No electronic traction control devices allowed.

 

6.            FUEL & FUEL CELL

1.            The word "fuel" as used shall be understood to mean automotive gasoline as defined by ASTMD-4.

2.            The gasoline shall not be blended with alcohol's, ethers, or other oxygenates. It shall not be blended with Aniline or its derivatives, nitro compounds, or other nitrogen containing compounds.

3.            No icing or cooling of fuel permitted in the pits or racing area.

4.            Fuel cell must be of a top feed type and must be securely installed in trunk compartment with 4 straps minimum 1/8 inch by1inch, 2 crosswise and 2 lengthwise. Cell must be mounted behind rear end and no lower than the bottom of frame rail. Fuel cell must be enclosed in minimum 16 gauge steel box.

5.            Filler spout must be completely inside trunk compartment.

6.               Maximum fuel capacity of 22 gallons.

7.            Fuel line may run inside drivers compartment if it is securely enclosed inside steel tubing sealed at both ends.

 

7.               STEERING & BRAKES

1.            No cutting or welding of any steering components.

2.            Stock four wheel brakes are required and must be in good working order.

3.            No aftermarket proportioning valves of any kind will be permitted.

4.            No rear disk brakes are permitted.

5.            Power steering pumps optional.

6.            Stock firewalls must remain in place.

 

8.            ROLL BARS

1.            Steel roll over bars are compulsory and must be passed by the Cajon Speedway Tech. inspection.

2.            Roll cage must be a four point cage that extends the width of the frame with a minimum of three horizontal bars on the drivers side and three horizontal bars on the passenger side. No Butt welds on door bars unless bars are bent. No more than 20 inch spread on door upright bars. Spreader bars front and back mandatory. Two bars maybe installed from roll cage to rear frame rails in trunk area. These tubes may not cross in trunk area. Entire cage must be constructed with a minimum of one and one-half (I 1/2) inch O.D. steel tubing with no less than .090 wall thickness.

3.            Rear hoop must be installed in trunk, behind fuel cell, with 45 degree kickers for cell protection. No steel plate of any kind will be permitted in trunk area.

4.               Speedway bars will be permitted on the right front only.

5.            A 1 3/4 inch tube or 1/2 inch by 1 inch square tubing may be mounted behind the fuel cell between the ends of the frame rails. No flat or angle stock will be permitted.

6.            A front radiator hoop may be used mounted no more than 4 inches forward and 12 inches rear of the radiator with a maximum of two kickers and be no wider than the frame rails.

7.            Other than radiator hoop and fuel cell protectors all other bars must be in passenger compartment.

8.            Roll bars must be padded at any point where the driver may make contact.

 

9.               WEIGHT

1.            All cars must weigh with a driver a minimum of 3450 pounds after the race.

2.            No more than 51.00% of the total weight of the car with the driver shall rest on the left wheels. Any parts lost during the race cannot be put back on before the car is weighted.

3.            All bolt on weight must be located inside the trunk area, painted white, stamped with car number and bolted securely no lower than the bottom of the frame member, subject to Tech. approval.

4.            Weight boxes in trunk will be no more than half of the distance between the frame and the rear quarter panels .

5.            Track scales to be official weight .

 

10.               ENGINES

1.            Engine must remain stock for make and model of chassis being used. All motors must be approved by technician.

2.            Engine blocks must be a V-8 type and be of stock factory production, cast iron only. No Bow-Tie blocks of any type will be allowed.

3.            All engine sizes are limited to au absolute maximum of 360 cubic inches including wear.

4.               Overbore size for all motors shall not exceed .060 inch from O.E.M. specifications. No forged pistons allowed .

5.            Cylinder compression is limited to an absolute maximum of 180 pounds, measured with track gauge.

6.            Any hydraulic cam will be permitted with a maximum lift of .460 inch measured on the lifter (measured with the tracks solid lifter). No solid or roller cams allowed.

7.            Stock single point ignition or stock type electronic ignition will be used. No magnetos, dual point distributors, or after market production distributors will be permitted.

8.            Except as described all other internal engine parts must retain O.E.M. specifications, as to size, shape, weight, and finish. No aftermarket crankshafts or connecting rods will be allowed.

9.            Any motor may be claimed for $800.00. Engine to be disconnected from exhaust pipe, bell housing, and motor mounts. including removal of clutch, flywheel, and carburetor. (See claiming instructions in general rules).

10.          Cylinder heads must be stock factory production, unmolested. No Bow-Tic or Dart heads will be allowed.

 

DEFINITION and official INTERPRETATION of the words "STOCK FACTORY PRODUCTION"; A stock head shall be characterized as a cylinder head which was offered as standard equipment with no performance advantage. Any cylinder head not being standard replacement O.E.M, equipment will be considered illegal No special performance options will be allowed. No porting or polishing will be allowed. All heads must have stock heat riser. No match porting. Heads may be cleaned, hot tanked, or cleaned by other processes which do not remove metal. No grinding, shot-peening, acid etching, sanding, or heavy wire brushing which would remove, smooth, or polish the metal

 

11.          Valve sizes for GM small block motors will be a maximum of 1.94 inches intake, 1.50 inches exhaust. All other motors must be Tech. approved. NO tulip valves will be permitted. No down sizing of larger heads will be allowed. No cutting of larger valves will be permitted. Stock replacement valves only, no performance valves. Stainless steel replacement valves are permitted. Valves must have seal "O" ring grooves as O.E.M. Maximum undercut at valve head to stem for stress relief is .005" inch.

12.          Valve seat angle must be stock 3 angle O.E.M. 75 or 60 degree, 45 degree, and 30 or l5 degree only. All angles must be centered off the valve guide. No back-cutting or under-cutting is permitted.

13.          Valve springs must he of stock factory production width. Stock type equivalent are allowed.

14.          Rocker arm size for all small block motors will be 1.50 maximum, stamped steel only. All other motors must use stock O.E.M. rocker arms. No roller rockers or Stud or girdles will be permitted. Poly locks may be used in place of stock rocker arm adjusting nuts.

15.          Except as described all other internal engine parts must retain O.E.M. specifications, as to size, shape, weight, and finish.

16.          Solid replacement of stock rubber motor mounts OK. Be careful not to mix/match part numbers as some are different height and remember if oil pan is below cross member, still keep 6" of mid ground clearance measured at the cross member or the lowest point, including oil pan.

 

11.               CARBURETOR & MANIFOLD

1.            All cars will run it Holley carburetor model #7448, 350 CFM 2 barrel.

2.            Use of this carburetor is mandatory. This Is a NO touch carburetor. The only changes permitted are jets, power valve, and removal of choke assembly (re: Butterfly plate and linkage assembly only). No cutting of any kind will be permitted. No drilling of the butterflies allowed.

3.               Maximum one (1) inch adapter plate allowed.

4.            Two (2) throttle return springs must be used, one on the carburetor, and one on the linkage.

5.            No fuel injection, super chargers, or ram air of any kind will be permitted. Stock type air cleaners only may he used.

6.            Intake manifold must be of an O.E.M. stock factory production cast iron two barrel only. Un-molested. No porting or polishing, Engines with no two barrel manifold offered as O.E.M. equipment must use a two barrel manifold from a smaller engine of the same block design. All special installations must be Tech. approved.

 

12.               EXHAUST SYSTEM

I.             Factory production cast iron exhaust manifolds only will be permitted. Un-molested. No porting or polishing. No headers.

2.            Exhaust system will be dual exhaust that pass thru mufflers and exit behind the driver. No 2 to I or crossover pipes will be permitted. 2 1/2 inch max.

3.            Street type mufflers, turbo mufflers, or glass packs may be used.

4.               Maximum dB level for all cars will be 90 at 100 feet and may, be measured at any time.

 

13.               COOLING SYSTEM

1.            One radiator only and must be mounted in original position.

2.            A one gallon overflow catch can is required, mounted inside engine compartment.

3.            Water only permitted in cooling system. No antifreeze or oil of any kind will be permitted.

4.            All cars will have a working engine fan and shroud in stock location.

 

14.               ELECTRICAL SYSTEM

1.            One passenger car battery only. battery must be located forward of the rear firewall.

2.            If battery is located inside passenger compartment, it must be fully enclosed in a steel box. All battery installations are subject to Tech. approval.

3.            Master battery cutoff switch required in the negative cable. Cutoff switch must be mounted within easy reach of the driver and the safety crew and clearly marked ON/OFF

4.            All cars must have self starter in good working order and able to start car at the beginning of each race meet.

5.            No radios are permitted in this class.

6.            No on-board computers allowed.

 

15.          SAFETY EQUIPMENT

1.            Drivers side window net is mandatory.

2.            Nomex type fire retardant suit is mandatory. No nylon shoes allowed. No jackets or polyester clothing of any kind will be permitted.

3.            Fire extinguisher with charge indicator, 2 lb. minimum, mounted within drivers reach mandatory.

4.               Aluminum seat mandatory. Racing seat must be securely attached to roll cage, subject to Tech. approval.

5.            An approved five point seat belt with date stamped no more than three (3) years old is MANDITORY. All belts must be fastened in an approved manner with a minimum of 3/8 inch aircraft bolts. All belts must have a secondary chain or cable hold downs in case of breakage. All seat belt attachments subject to Tech. Approval.

6.            Helmets must meet Snell 2000 Testing standard.

7.            Eye protection, helmet, belts, & drivers suit must he worn at any time you are on the racing surface,

8.            Battery cut-off behind seat.

 

16.          SEE RULE BOOK FOR OFFICIAL COMPRESSION CHECK RULES.

 

ALL CARS MUST HAVE THE CAR NUMBER PAINTED IN WHITE, MINIMUM OF 3 INCHES, ON THE TOP PASSENGER SIDE OF WINDSHIELD.

 

Interpretation of Rules

 

On misinterpretation of a rule, the official's interpretation shall be the official interpretation and will supersede any and all other possible interpretations. If you are in doubt on any rule, ask an official. The decision is to be in writing and given to the party requesting the decision of the interpretation. Where there is no specific rule to govern the occasion the official's decision will be final. . . IGNORANCE IS NO EXCUSE.

 

Any modification not covered in these rules will not be allowed unless approved by the Cajon Speedway Chief Steward.

 

We intend for all cars to be competing with each other. if you do something to your car that these rules have overlooked that we feel gives you an advantage or edge over other competitors, YOU will be required to change YOUR CAR.

 

THESE RULES WILL BE IN EFFECT THROUGH THE 2004 RACING SEASON. FOR MORE INFORMATION ON RULES OR RACE DATES YOU MAY CALL (619) 448-8900

 

"The rules and/or regulations set forth herein are designed to provide for the orderly conduct of racing events and to establish minimum acceptable requirements for such events, these rules shall govern the condition of all Cajon Speedway events, and. by participating in these events, all participants are deemed to have complied with these rules.

No express or implied warranty of safety shall result from publication of, or compliance with these rules and/or regulations, they are intended as a guide for the conduct of the sport and are in no way a guarantee against injury, or death to participants, spectators, or others."

 

Any part or equipment found during an inspection or any other time at anytime at a NASCAR sanctioned event that does not meet applicable NASCAR standards, must be surrendered to the NASCAR official at that time, and will not be returned. Failing to do so will result in; a fine, and/or loss of championship points, and/or definite or indefinite suspension from NASCAR.

 

 

 

 

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