IHRA RULE BOOK 2013 PDF

Only one button, regardless of function, will be allowed on the steering wheel. Reserved for American factory-production automobiles and some foreign and domestic sports cars. Only those cars listed in the Guide are eligible. All cars must be factory-production assembled, show room available and in the hands of the general public. Tow vehicles prohibited. Convertibles must run with top up.

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Only one button, regardless of function, will be allowed on the steering wheel. Reserved for American factory-production automobiles and some foreign and domestic sports cars. Only those cars listed in the Guide are eligible. All cars must be factory-production assembled, show room available and in the hands of the general public. Tow vehicles prohibited. Convertibles must run with top up. Sedan delivery, Ranchero, El Camino, etc. Cars must retain level attitude at stand still except those which have a forward rake an acceptable modification.

Body-mount insulators may be replaced with solid mounts of same size. Aluminum or other light weight material may not be used to replace heavier items on car. Energy absorbing apparatus may be removed. Edges must be rolled and appear stock. Flaring or spreading external fender lines prohibited. Area from front mount of rear spring on leaf spring cars, or front mount for lower trailing arm on coil spring cars, to rear of trunk may be sectioned in width to allow narrowing rear frame.

Any protrusion in trunk may not be higher than top of stock frame rail. HOOD: Full stock hood and bracing required. Hood openings and or hood scoops other than original equipment prohibited. Tachometer, pressure gauges, acceptable. Sway bars, windshield wiper assembly and heaters optional. Heater controls must be retained, except pre cars. Rear seat may be removed for installation of roll bar or roll cage if area is carpeted.

Windows must be operative and closed during competition. All classes may use up to lbs. Only lbs. Will be allowed in weight box. Additional ballast must be permanently attached to frame, bolted and welded.

Maximum including hold-down device. Must be isolated from driver compartment. See General Regulations. Line locks permitted. Parking brake optional. Subframes on unibody cars may be joined under car. Round tubing may be used to join subframe in straight line extending through car floor with floor completely welded to frame. Rear subframes may be moderately altered for tire clearance. Cross members may be added for traction bar and shock absorber mounts. Cars using other than stock fuel lines may use any size metallic fuel lines.

Cool cans permitted. If fuel cell is used it must be mounted in trunk floor as outlined in General Regulations. Only one fuel cell permitted. Engine must be in stock location. Motor plates and mid-mounts permitted. Internal wheel well modifications allowed in rear, provided area is closed where cutting or spreading was done.

Material to replace sections of inner fender well must be steel, same thickness as removed. Edges must be re-rolled and appear stock. Flaring or spreading external fender line prohibited. Overall length not to exceed one-half wheelbase. Upper rear trailing arms and center torque arm may be removed. Non-metallic wheels only. Not to be attached to rear bumper or bumper braces. Maximum variation from left to right: 1 inch.

Aftermarket wire or motorcycle wheels prohibited. If weight is added, it is recommended that it be in the form of a roll bar or roll cage. If class is changed and removable weight is added, it must be installed in acceptable weight box.

Shipping weight is calculated by multiplying the factor as found in Official Stock Car Classification Guide by advertised horsepower except in those cases where IHRA has placed a performance rating on the engine, in which case use the factored horsepower. Entries may move up or down one class. Driver weight is added after class weight is determined. Any type permitted. Ram tubes or other than stock ducting prohibited.

Any internal modification allowed which does not affect the air flow. Replacement carburetors allowed provided they are same as original equipment with regard to make, model, type, throttle bore and venturi size.

Aluminum or titanium rods prohibited. Combustion chamber modifications prohibited. Combustion chamber grinding and polishing permitted. Spark plug hole must maintain the OEM angle, size and location. Valve and guide centerlines must maintain the OEM angles in all directions. All cylinder head volume numbers must be retained as per published specifications. Valve seat angle may be modified as needed. Replacement valves must be identical to stock valves in appearance and size. No external modification allowed.

Heat riser passages may be blocked off from intake manifold side of cylinder head or in exhaust port. Distributorless ignition is prohibited on vehicles unless it was present in OEM combinations.

Units must retain OEM number of coils. Equipment other than original factory installed is prohibited unless otherwise specified. Special equipment export installed is prohibited unless otherwise specified. Special equipment export kits, superchargers, dealer installed options, etc.

Cylinder bores must not exceed. Bores are measured at top of cylinder where ring wear is not evident. Normal balance job permitted. Engine cannot be raised or lowered.

Otherwise lightening of component parts prohibited. All carburetors, manifolds, heads, etc. Vacuum lines must be securely connected or blocked off. The following are allowed: Polylocks, jam nuts, screw-in or pinned studs.

Accessory fans acceptable, both may be driven electrically. Fan belt not required. Generator or alternator may be removed.

If thinner than stock head gaskets are used, thickness loss must be made up with additional deck clearance. MANIFOLD: Any intake manifold permitted, provided unit is of same configuration as original for carburetor used and will fit under original factory-produced, installed hood. After market oil pans permitted.

If cross member is altered for larger oil pan installation, all material and strength must be replaced by boxing or installing removable or permanent material. PISTONS: Replacement pistons permitted, provided they do not increase stock compression ratio and retain overall design pattern as specified by automobile manufacturer. Cylinder blocks may be sleeved. The use of a cast iron harmonic balancer is prohibited; units meeting SFI Spec.

Units meeting SFI Spec. Steel or aluminum unit meeting SFI Spec. May be narrowed for wide tires. Truck rear end not allowed unless originally factory installed. Locked rear ends accepted, including spools; aftermarket axles mandatory with locked rear end.

Welded spider gear rear ends not permitted.

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IHRA RULE BOOK 2013 PDF

If the switch is mounted in any other fashion, it must be labeled in a way that is clearly identifiable as to which way off is positioned. One nozzle located in drivers compartment in front of feet and one nozzle on engine. Safety pins must be red flagged. Competition in the facilities normal weekly ET bracket series under these parameters is prohibited. These vehicles may run provided all of the criteria listed within this section is verified prior to participation.

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Dukora Using a screen reader? Timed ignition interruption devices stutter boxes prohibited in all ET bracket categories. Full automotive-type front suspension required. Exact duplicates of stock fenders in fiberglass permitted. This includes all protective clothing as welll as pants and shoes where SFI specified equipment is not mandatory. It must be located on the rear of all entries and must break the positive side battery supply to the competition vehicle.

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Mulkree Rear fenders may be boo for tire clearance. Flywheel shield, mandatory and clutch, pressure plate and flywheel meeting SFI 1. All drivers must utilize helmet and protective clothing requirements as per the minimum specifications outlined in the IHRA rulebook under the ET bracket section starting on page All bottles must be securely mounted, stamped with minimum Dot pound rating. Exhaust gases must be directed out of the car body, rearward, away from driver and fuel system. Belts must be securely fastened to the frame, inspection or reinforced mounting point.

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