2007 Rules

Only one internal-combustion reciprocating automotive-type, one motorcycle or one snowmobile engine permitted. Motorcycle or snowmobile powered vehicles without reverse may not burnout across starting line. Harmonic balancer meeting SFI spec 18.1 mandatory in any car running 10.99 (*6.99) or quicker. Maximum height of crankshaft centerline 36 inches (914 mm) on O.E.M. trucks; all others 24-inches (610 mm).

All cooling systems/radiators must be installed in the stock location for body style used. Front engine Dragsters must have system installed in front of engine. Rear engine dragsters with radiator mounted in front of engine must install a deflector from frame rail to frame rail and to the top of the roll cage. Portion above top rail may be width of rear roll cage bars. See 4.3 DEFLECTOR PLATE 

Classes limited to automotive engines only unless otherwise stated under Class Requirements. Contestants in weight-to-cubic-inch (weight to cubic centimeter) classes must claim cubic inch (cubic centimeter) displacement of engine used; under no circumstances may claimed displacement exceed actual displacement by more than five cubic inches (81.9 cm3). No allowance for overbore; any part of a cubic inch (cubic centimeter) is rounded off to the next highest inch (i.e.: 301.2 = 302). If engine size is changed during a race, competitor must report to FIA scrutineer before a run is attempted. Crankshaft centerlines must not exceed 24-inches (61.0 cm) from ground in any class; except OEM trucks, max height 36-inches (91.5 cm) (inside). Engine must be mounted to frame by a minimum of two 3/8-inch (9.53 mm) diameter grade 5 (or Class 8.8) bolts. 

Valve train must incorporate conventional automotive coil spring design; use of pneumatic-type valve trains are prohibited in all classes. 

All classes, except ET cars slower than 10.99 seconds, harmonic balancer meeting SFI spec 18.1 mandatory. All cars with pressed-on front harmonic balancers must have such installed to prevent accidental loss (i.e.: drilled and bolted). 

All cars must be equipped with exhaust collectors, headers or stacks installed to direct exhaust out of car body to rear of car, away from driver and fuel tank. Exhaust stacks must have a metal connecting strap to prevent loss of one or more stacks during competition. If mufflers are used, they must be securely attached to exhaust system and car body or frame. Flexible tubing or "flex pipe" prohibited in all categories.. 

Consistent with its endeavors to maintain drag racing’s acceptance as a recognized sport and recreation, FIA is experimenting with exhaust muffling devices and may in time require use of such equipment in certain environmental control areas. 

Carburetor inlet must not be openly exposed. In place of hood, carburetors must be equipped with a flash shield or velocity stacks which cover the top, back and sides, preventing fuel from being siphoned into the airstream or blown into driver’s face. Additionally, any car that is driven, not towed, through the pits, with open stack(s) not protected by hood or scoop, must have screening installed on open stack(s) to prevent items from entering stack. 

Location: All fuel tanks, lines, pumps, valves etc., must be outside of the driver’s compartment and within the confines of the frame and/or steel body. Cool cans, in full-bodied cars, must be mounted a minimum of 6-inches (15.2 cm) forward of firewall. Fuel blocks must be located at least 6-inches (15.2 cm) forward of the flywheel/bellhousing area. 

Tanks: When permitted by class regulations, fuel tanks located outside body and/or frame must be enclosed in a steel tube frame constructed of minimum 1 1/4-inch O.D. x .065-inch (31.8 x 1.65 mm) chrome moly or .118-inch (3.0 mm) mild steel tubing. All fuel tanks must be isolated from the driver’s compartment by a firewall completely sealed to prevent any fuel from entering the driver’s compartment. All fuel tanks must have a pressure cap and be vented outside of body. A positive-locking screw-on fuel tank cap is mandatory on all open-bodied cars. Insulated fuel tanks prohibited. When used, fuel cells must have a metal box protecting the part of the cell which is outside of body lines or trunk floor, excluding hose connection area in rear. All non-metallic fuel cells must be grounded to chassis. 

Lines: All non-OEM fuel lines (including gauge and/or data recorder lines) must be metallic, steel-braided or FIA accepted "woven pushlock". A maximum of 12-inches (30.5 cm) total (front to rear) of non-metallic or non-steel braided is permitted for connection purposes only; individual injector nozzle and motorcycle fuel lines are excluded. Fuel lines (except steel braided lines) in flywheel/bellhousing area must be enclosed in a 16-inch (40.6 cm) length of steel tubing, 1/8-inch (3.2 mm) minimum wall thickness, securely mounted as a protection against fuel line rupture. It is mandatory that fuel lines passing supercharger drive belts be steel braided or be enclosed in protective steel tubing. Fuel lines must not be routed in the driveshaft tunnel. 

Pumps/valves: Cars with non-OEM type mechanical fuel pumps must have a quick-action fuel shut off valve within easy reach of driver and located in main fuel line between the fuel tank and the carburetor and/or injectors. Fuel recirculation systems not part of normal fuel/pump system prohibited. 

Fuel/air: Any method of artificially cooling or heating fuel prohibited (i.e.: cool cans, ice, freon, wet rags, etc.), except as noted in Class Requirements. Cool cans, wet towels, etc. are permitted in ET Handicap classes. Wet towels, rags, ice, etc. must be removed before vehicle leaves staging area. Ambient temperature air only; cooling or otherwise changing the conditions of the intake air prohibited. 

Alternative Fuels: Containers for alternative fuels must be permanently labeled by the manufacturer as suitable for CNG or Propane. Tank must be vented outside of body. Alternative fuel systems must incorporate pressure relief valve meeting standards listed in NFPA 52. Alternative fuel systems must incorporate a manual shut off valve according to standards listed in NFPA52 for CNG vehicular systems. All hoses/lines used for alternative fuels must be permanently and distinctively marked by the manufacturer as to manufacturer name or trademark, service identifier and design pressure. Plastic, cast iron, galvanized, copper or aluminum pipe or hoses prohibited. 

Gasoline is defined for purposes of this Appendix as a mixture of hydrocarbons only. Non-hydrocarbons which do not increase the specific energy of the gasoline are permitted to the extent that they do not exceed 0.15 % by volume and are blended in the gasoline by the refiner or fuel manufacturer. 

Gasoline is a good electrical insulator, or dielectric, and its relative effectiveness as an insulator is represented by its Dielectric Constant. The average D.C. for the hydrocarbons which comprise gasoline is 2.025. This is defined as a reading of "0" with the FIA Fuel Check meter. 

Gasoline is tested and certified at FIA events through the application of various chemical analyses as considered appropriate by Fuel Check personnel. Gasoline in a vehicle may be checked before use in competition. 

All cars in competition with any type of water overflow capable of spilling water must have a catch-can to accumulate the excess liquids and not leak onto the track. Minimum catch-can capacity: 1 pint (.47 l). Catch-can must be securely fastened; i.e. bolted, clamped. Overflow may be routed into headers on cars that are supercharged or burn nitromethane or methanol. 

Methanol is a clear, colorless liquid with a mild odor at ambient temperatures. Methanol is sold in two U.S. Federal Grades: A and AA. Either grade is acceptable for use in FIA competition, and racers should ensure that the methanol they purchase meets Federal standards of purity. The purity standards for each grade are shown in the table below. 

Methanol is tested and certified at FIA events through the application of various chemical analyses as considered appropriate by Fuel Check personnel. To be considered legal, methanol used in FIA competition must meet the U.S. Federal standards of purity. Any deviation from these standards because of impurities (beyond the limits established in the U.S. Federal specification) in the fuel sample will result in disqualification. Since methanol is a hygroscopic substance, it readily absorbs moisture from the air which rapidly renders methanol illegal as a fuel for use in FIA competition. Racers are cautioned to keep methanol containers tightly capped at all times to minimize the absorption of water. Racers are encouraged to have Fuel Check personnel check samples of their methanol any time there may be doubt as to its purity. 

Nitrous oxide permitted in ET classes only. The use of any agents other than nitrous oxide as part of, or mixed with, this pressurized fuel system is strictly prohibited. All bottles must be securely mounted, stamped with minimum 1800 pound (124 bar) DOT rating, and identified as N20. Nitrous oxide bottle(s) located in driver compartment must be equipped with a relief valve and vented outside of compartment. System must be commercially available and installed per manufacturers recommendations. All vehicles using a bottle of nitrous oxide must bear a mark in accordance with drawing n° 23. The mark will be clearly visible and will be located in a place which is not likely to be damaged in the event of an accident and which is near to the competition number. External heating of bottle(s) prohibited. 

Accu-sump, dry-sump tanks, oil filters, oil supply lines, etc., prohibited in driver compartment and outside of frame and/or steel body / fenders. Oil pressure gauge and line permitted in driver compartment. Metal or steel braided line mandatory, maximum 3/16-inch (4.76 mm) inside diameter. Power enhancing additives prohibited. 

The use of propylene oxide is prohibited in all categories. 

ROOTS-TYPE: Maximum size permitted