1. INTRODUCTION

A. NO EXPRESS OR IMPLIED WARRANTY OR SAFETY SHALL RESULT FROM PUBLICATIONS OF OR COMPLIANCE WITH THESE RULES AND/OR REGULATIONS.

B. It is the responsibility of the driver of the car to see that his/her car completely satisfies the rules, including but not limited to all safety rules. The driver of each car represents to the promoter and all others that his/her car has satisfied all applicable rules, including but not limited to safety rules, whenever such driver participates in warm-up, practice or competitive laps.

2. COMPETING MODELS

A. Type: 1970-1990 rear wheel drive, foreign or domestic car or pickup, originally 4 cylinder equipped – See Engine Rules!

3. GENERAL BODY REQUIREMENTS

A. General:

1) MUST HAVE ALL BODY PARTS TO RACE, SPECIFICALLY: hood, roof, trunk lid, grill, fenders, quarter panels, windshield, front or rear bumpers. Exceptions: a car may start the main event without parts if ok'd by tech men to be safe.

2) Panels may be drilled out to allow normal construction methods and passage of roll cage sections, frame connections, linkages and plumbing. All holes or voids must be filled or blocked with a like thickness of original material.

B. Interiors:

1) Inner panels may be removed in door, fenders, quarter panels, roof and trunk lid. Hood must be gutted. Dash and related brackets must be removed.

C. Overall Car Weight:

1) The car shall weigh a minimum of .95 pounds per cubic centimeter and shall be weighted at the end of the main without adding fluids.

4. DETAILED BODY REQUIREMENTS

A. Windshields:

1) Windshields that fully closed the opening are required.

2) OEM safety glass or tempered plexi-glass acceptable.

3) Windshields are subject to the windshield strap requirement and shall be securely fastened.

B. Rear Window:

1) Rear window may be closed with acrylic or plexi-glass.

C. Side Windows, Quarter Windows, Air Deflectors and Net:

1) Quarter window may be closed with acrylic or plexi-glass.

2) The right door window shall remain open.

D. Rear View Mirror:

1) NO MIRRORS.

E. Firewalls:

1) Firewall and floor pan must be stock and in the original position and extend from windshield base to original rear wheel wells.

2) Firewall may be massaged, but not removed, to allow engine placement.

F. Doors:

1) Doors must be welded, bolted or steel pop riveted shut.

G. Fenders:

1) Wheel openings may be enlarged for tire clearance; should be rolled to reduce cut tires. Driver's area must be completely shielded from rest of wheels.

H. Bumpers and Rear Filler Panel:

1) Aerodynamics ok. Front and rear bumpers and covers 1970 to present, make to make as long as it blends into body sides.

5. GENERAL ENGINE REQUIREMENTS

1) Must be stock (factory stock) 4cyl., and mounted in the stock position. Manufacture to manufacture.

2) All engine parts shall be OEM parts manufactured through 1985 only.

3) No high performance or Motor-Sports parts.

4) No fuel injections or turbo parts allowed.

5) No rotary, air cooled, rear or mid engines.

6. DETAILED ENGINE REQUIREMENTS

A. Engine Displacement:

1) Maximum 2600 cubic centimeters.

B. Internal Changes:

1) Bore not to exceed .040”.

2) Balancing OK.

3) Indexed and adjustable timing gears ok. Billet idlers ok.

C. Oil Pans and Coolers:

1) Windage trays OK.

D. Cylinder Heads:

1) Heads must match block as produced (2300 Ford head to 2300 Ford block, 22R Toyota head to 22R Toyota block etc...)

2) Head machining not to exceed .020.

3) No porting, polishing, or matching of ports, in regards to head only.

E. Camshaft, Valve Lifters, and Rocker Arms:

1) Camshaft .425 max. Lift at valve.

F. Intake Manifold:

1) Carbureted intakes only.

2) GM 153 may use marine 2bbl. intake.

G. Carburetor:

1) Limited to one 2bbl. only.

2) 390 cfm max., 1.7 in. throttle bore.

3) No internal polishing or machining of air horn.

4) Factory throttle cables OK, safety spring required.

5) Toe hook required on throttle pedal if solid linkage.

6) Spacer total thickness 2 in. including gaskets. Measured from intake manifold to base.

7. ENGINE/CAR ELECTRICAL SYSTEM

A. Ignition System:

1) Factory ignition only, no magnetos. No performance or aftermarket.

B. Battery:

1) Any 12 volt passenger car battery is allowed and shall be mounted in the passenger compartment.

2) Must be six inches from any exterior sheet metal and mounted above the floor pan.

3) Must be enclosed in a nonconductive covered box and fastened through the box to the car itself.

C. Electrical Switches and Locations:

1) A labeled ON-OFF switch shall be located on the roll bar behind the driver’s seat. The switch must be wired to the battery in a manner that will cut off all electrical power to the car.

8. ENGINE COOLING SYSTEM

A. Fan:

1) Electric fans OK. 

B. Radiator:

1) Any stock or aluminum radiator mounted in front of the engine shall be permitted.

C. Overflow:

1) Must have catch tank and no auxiliary radiators.

9. ENGINE EXHAUST SYSTEM

A. Exhaust Manifold:

1) Ranger manifolds OK. Headers OK, collector not past bell housing.

B. Exhaust Pipes:

1) Exhaust must be completely sealed from driver, inside or outside of car. Exhaust must exit behind driver.

C. Mufflers:

1) Muffler is optional, not mandatory.

10. DRIVE TRAIN

A. Clutch:

1) Clutch shall be stock.

2) Clutch, flywheel, fasteners and release bag must weigh a minimum of 28 pounds.

B. Flywheel:

1) Flywheel shall be stock.

2) No aluminum or nodular.

C. Transmission:

1) Only manual transmissions with all gears working are permitted.

2) Automatic transmission shall not be permitted.

D. Drive Shaft:

1) Any steel driveline may be used.

2) Must have safety hoop around front of driveline.

3) Driveline must be painted white.

E. Rear Axle:

1) Stock not over 8.8" ring gear, may be locked.

2) Any gear ratio allowed.

3) May mount other stock types, but must use original mounting brackets of vehicle.

F. Wheels and Lug Bolts:

1) Maximum 8" wide, steel only. No exceptions.

2) Right side wheels must be racing approved or tech approved.

3) Bead may be reinforced.

G. Tires:

1) Maximum width 9" across the face.

2) MVS Track approved tire.

3) No pressure relief valves.

11. FRAME REQUIREMENTS

A. Connecting of sub-frame allowed.

1) Sub frame connectors not to extend more than 6 inches past end of frame stub. Can be lower than frame stubs, but must have at least 3 inches of ground clearance from bottom of connector with driver in car.

12. SUSPENSION

A. General Suspension:

1) No weight jacks or coil over. Struts OK, if originally equipped.

B. Front Suspensions:

1) Any bushing material can be used.

2) Upper and lower A-arms can be modified, but no tubular.

3) Adjustable caster/camber plates on front left and right OK on strut cars, Camaros and fox body Mustangs. As well as on any other strut front end car.

C. Front Springs:

1) Any steel spring, mounted in stock position with stock mounting brackets shall be permitted.

D. Rear Springs:

1) Any steel spring, mounted in stock position with stock mounting brackets shall be permitted.

E. Sway Bars (Anti-Roll Bar):

1) Stock diameter sway bar mounted in stock position and non adjustable.

F. Shock Absorbers:

1) Any gas or hydraulic shock, mounted in stock position, can be used.

G. Body Height Requirements:

1) Frame and cross-members must have a minimum of three inches of ground clearance at lowest point with driver in car.

H. Car Height Adjusting Devices:

1) Adjustable spacers are permitted on all four corners on rear coil spring cars as long as stock remains in stock position.

2) Spring spacers are acceptable on coil springs if mounted in a permanent fashion so as not to be dislodged in a crash.

a) No "screw-in" twist-in type blocks.

b) Horseshoe type permissible.

3) Leaf cars may run adjustable shackles.  Mopar:  Front or Rear not both.

4) Lowering blocks are acceptable on rear leaf spring cars.

5) Springs may be heated or cut.

13. BRAKES AND COOLING COMPONENTS

A. Brake Components:

1) Brakes shall be working on all four wheels.

2) Disc front, disc or drum rear.

3) Master cylinder and brake components shall be stock.

4) No adjustable proportioning valves.

14. FUEL

A. Pump gas, race gas (Cam 2, etc..).

B. No nitro or alcohol.

15. FUEL SYSTEM

A. Fuel Cell:

1) Fuel cells required with tip over valve and can.

B. Fuel Cell Container:

1) Must be mounted in trunk, must not be more than 8 gallons maximum.

C. Fuel Lines:

1) Fuel lines must run underneath the car. No more than 12 inches total length of rubber hose.

D. Fuel Pump:

1) Fuel pump must be mechanical or OEM electric if it is factory equipment.

a) If electric it must have an oil pressure shut off.

16. PERSONAL SAFETY EQUIPMENT AND ROLL BARS

A. Fire Control:

1) Fire Extinguisher:

a) Shall be securely fastened.

b) Shall be within drivers reach.

c) Shall be minimum of 2 1/2 lb., ABC type.

2) Fire systems OK, no halon.

3) Must have fire shield that completely separates driver from fuel cell and can.

B. Seats:

1) Bucket only, high back and headrest required.

2) Racing seats are mandatory.

3) No fiberglass

C. Roll Bars:

1) Must be of 4 point minimum construction and of 1-1/2" or 1-3/4” O.D. pipe or larger, .095 thickness.

a) Must have cross braces and gussets.

b) Must have side bars: 3 on drivers side and 2 on passenger side.

c) Top of helmet should be at least two inches below bottom of any roll cage tubing running above or past head.

d) A bar running from center of halo bar to across the center of windshield opening between two upright legs on each side of the window.  Optional.

2) Front and rear hoops are mandatory.

3) It is recommended that the driver side door bars have plating, 14 gauge, to cover post to post and top to bottom, either between tubes or on the outer side of tubes, between door skin.

4) Nerf or Bump Bar may be welded to frame but shall not exceed one (1) inch past the outside edge of tires with ends rolled in to body and no blunt ends.

D. Transmission/Clutch Shielding

1) Scatter shield recommended, must be either 1/4" steel plate or tech approved belting. Belting inside over hump must have at least 6 3/8" bolts holding it down.

E. Steering wheel

1) A steel quick release steering wheel is mandatory.

DRIVERS, CAR OWNERS AND PITMEN IN THIS CLASS SHALL OBSERVE ALL THE MISSION VALLEY AUTO RACERS GENERAL RULES.

If it doesn’t say YOU CAN…..YOU CAN”T! 

RULES TO BE CHANGED MUST HAVE A 70% MAJORITY VOTE OF THE CLASS DRIVERS OR OWNERS THAT PARTICIPATED  IN TWO OR MORE RACES AND 70% MAJORITY VOTE OF BOARD MEMBERS. If car owner or driver can’t be contacted or is contacted and doesn’t reply back to the class representative, the vote for the car would be a NO vote. Any rule changes not voted on by driver or owner will be a NO vote.

ONLY in the interest of SAFETY, COST and/or FAIR COMPETITION can 70% of the board of directors make a rule change if the class representative can’t get 70% of the votes from the class drivers or owners.