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4-Cylinder Rules

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4 CYLINDERS

Please remember this division is intended to be an extremely affordable division of racing if you intend to spend a lot of money you should be racing in a different division

COMPETING MODELS:

·          Any American or foreign made hard-top sedan.

·          No Camaros or Firebirds. No mid- or rear-engine cars. NO TRUCKS, Vans, SUV’s, or all wheel drive

BODIES:

·          Cars must be neat  in appearance. Bodies may be cut and trimmed for clearances only.

·          No gutting allowed, other than removal of interior, windows, window mechanism, driver and passenger door panels, inner front fenders, hood and trunk panels.

·          Full stock front and rear fire walls in stock locations. Complete firewall between fuel cell and driver's compartment also required.

·          Brake and gas pedals must remain in stock location.

·          Front and rear tow chains are required.

·          Pin fasteners required in any corner of the hood and trunk not attached by a hinge.

·          Stock front and rear bumpers in stock location; may be home-made, but not excessive

·          No trailer hitches.

·          Battery must be securely mounted in a plastic case with a cover.

·          Rub rails 2" max tight to body between front and rear tires. No sharp edges.

SUSPENSIONS:

·          All suspension components must remain stock and in stock location.

WHEELS AND TIRES:

·          Stock steel or after market steel allowed. Bead locks allowed.  1" lug nuts mandatory- on all wheels.

·          Street legal D.O.T. steel belted radial tires only; no racing retreads, casing or compounds. No D.O.T. Compounds NO Hoosier / American Racer Etc.  Max tread width 8" No studded tires. Summer or snow tires - no overly aggressive tread. Check with tech to confirm legality of tires.

ENGINES:

·          Factory show stock for make and model of car.

·          In 2008 no compression rule In 2009 season COMPRESSION LIMITED TO Max 10.0 TO 1 Legion Speedway Whistler gauge will be final on compression 9.5 TO 1 or less recommended

·          No turbo's, superchargers, or rotary powered cars.

·          All cars with electric fuel pump must have a shut off switch clearly marked.

·          Stock carburetor, fuel injection or 350 CFM  Holley 2 barrel MUST PASS GUAGE INSPECTION.

·          1" adapter plate allowed.

·          Stock ignition only.

·          Starter must be working. STOCK CLUTCH AND FLY WHEEL REQUIRED

·          MAX OVER BORE .060.

·          CRANKSHAFT MUST MAINTAIN STOCK STROKE.

·          Max VALVE lift .450 measured at valve. AFTERMARKET TIMING GEARS ALLOWED

·          Any 4 into 1 collector header allowed NO TRI Y HEADERS OR MERGE COLECTORS ALLOWED

ROLL CAGE:

·          Round steel 1.500" X .095  tubing minimum for rear upright-driver's door bars-halo bar-front uprights.

·          One bar at dash height tying two (2) uprights together. One bar behind driver tying two (2) uprights together.

FUEL CELL:

·          Fuel cell OR  boat tank is mandatory  equipped with a rollover safety check valve in vent line,  MUST BE SECURELY MOUNTED IN TRUNK AND BOAT TANK must have a FULL STEEL FIREWALL ( MINIMUM 22 GAUGE)  BETWEEN TANK AND DRIVER

·          Cells must be SECURELY mounted in the center of the trunk

·          Any fuel lines running through the driver's compartment must be in steel conduit, BX or Sealtite.

·          Cars with electric fuel pump (STOCK ONLY) must be tied into ignition switch.