posted April 12, 2005 05:58 AM
For 2005, IMCA has allowed Whiskey Lake Raceway to drop their requirement of American Racer IMCA spec tires for the left-rear wheel. Any brand and any size is allowable. However, IMCA and Whiskey Lake Raceway still mandates the use of an American Racer IMCA spec tire right-rear tire no wider than 14 inches.
IMCA has also dropped the heads-only or engine claim for Sprint cars that run at Whiskey Lake Raceway. All other IMCA and WLR rules apply.
Whiskey Lake Raceway 2005 Sprint Car Rules
2005 IMCA Sprint Car Rules Apply Except As Follows...
1. Wings....Any size with a maximum of 25 square foot are allowed.
2. Engine Rules:...360 cubic inch maximum except for Chrysler (364 cid). Iron Block and Iron Head only. No down nozzles. No cubic inch limit for carbureted engines as per IMCA Rule 18 (A).
3. 14 inch maximum wide right-rear tire. American Racer for right rear.
4. No engine or heads-only claim! Waived by IMCA for Whiskey Lake Raceway. Cars may not be legal for other IMCA-sanctioned sprint events.
5. No minimum weight.
2005 IMCA Sprint Rules http://www.imca.com/rules/sprint.html
1. SAFETY EQUIPMENT: Snell SA95 or SA2000 helmet required and must be worn at all times car is on track. Roll bar padding (fire retardant recommended) required. SFI approved full fire suit required. Fire retardant gloves, shoes, stockings, underwear, hood and neck brace required. Head and neck restraints recommended. Competition shoulder harness and lap belt (minimum three inches wide), sub-strap, and arm restraints required. Metal to metal buckles required on shoulder and seat belts. Seat belts recommended not to be over one year old. Window openings must remain open, except roll cage net on right side mandatory, left side recommended.
2. FRAME: Steel frames only. Minimum wheelbase 84-inches.
3. ROLL CAGE: (See diagram for roll cage specifications and measurements) Driver’s head must not protrude outside cage.
4. BODY: Must be of “sprint car” design in front. Full-length hood is recommended. Metal or fiberglass filler panels only. Triangular roll bar filler not to exceed 12-inches and must remain behind seat. Must have number on both sides of top wing - 15-inch minimum height - and number on each side of tail section - minimum 13-inch height. Recommended no holographic or reflective numbers.
5. WINGS: TRACK OPTION TO ENFORCE ONE OF THE FOLLOWING:
(A) Top wing, maximum 16-square feet with maximum 18-inch sideboards. Top wing side panel maximum 18-inches wide with no angle bracing or material to exceed 1.25-inches from flat part of side panel. Sideboards maximum 5-feet in length; sideboards must cover main wing section and be at 90° angle to wing body. No “in-board” adjustment devices. No two-piece wings. Wing must be parallel, side to side, to frame. Wing can have maximum 3-inch banana, including wickerbill. Wing can be no wider than 5-feet and must be inside rear tires. Optional nose wing limited to 24-inches by 36-inches, with 25-inch by 12-inch maximum side board. No other aerodynamic effects allowed.
(B) Top wing maximum 25 square feet and is not to extend outside wheels. Side boards maximum 30 inches high and 72 inches wide, with maximum 1.25-inch lip on top and bottom edges. Maximum 2-inch lip on rear of side board. Maximum 2.5-inch banana in wing and maximum 1-inch wickerbill. Optional nose wing limited to 24-inches by 36-inches, with 25-inch by 12-inch maximum side board. No other aerodynamic effects allowed.
6. DRIVER COMPARTMENT: Rock screen required. Aluminum high back seats only. Metal fume guard required. No mirrors. No in-cockpit adjustable shocks, torsion bars or weight jacks.
7. SUSPENSION: All shocks must be constructed of aluminum or steel.
8. REAR END: Quick change center sections are legal.
9. BUMPERS: Steel rear bumpers and nerf bars (rub rails) mandatory.
10. TIRES AND WHEELS: Any 14-inch American Racer D3B, stamped I.M.C.A. on right rear. Any American Racer stamped I.M.C.A. on left rear. No softening or conditioning of tires, no re-caps. Aluminum wheels only, bead locks optional.
11. BRAKES: Minimum three-wheel workable brakes (in board brakes allowed).
12. EXHAUST: All headers must have collectors. Some tracks may require mufflers or some other form of noise reduction.
13. FUEL SYSTEM: Racing fuel cell with bladder required. Check valve or overflow tube required. Overflow tube must be lower than tank, located on right side.
14. FUEL: Alcohol or ethanol. No performance-enhancing additives. No gasoline.
15. WEIGHT: Weight jacks allowed. No titanium products, parts or components. No gun-drilled, tubular or hollow bolts or studs. TRACK OPTION: Minimum weight limit of 1,550 pounds, with driver, after feature.
16. GAUGES AND ELECTRONICS: No transmitting or listening devices. No electronic monitoring computer devices capable of storing or transmitting information except tach. No electronic traction control devices ($10,000 fine).
17. TRANSMISSION AND DRIVE SHAFT: In-out box or slider required. Drive shaft (torque tube) must be fully enclosed. Drive shaft strap required.
18. ENGINE RULES: TRACK OPTION TO ENFORCE ONE OF FOLLOWING, or a combination of both options. All engines must run injector sleeves with a minimum of 1.875-inch I.D. for at least 3 inches long, and top of sleeves must completely seal the outer injector stacks, no holes or gaps allowed.
(A) CLAIM ENGINE -Engines with injectors limited to 361 cubic inches, 364 Chrysler. Any engine, without injectors, no cubic inch limit. No down nozzle injectors. All engines used in competition must be able to be used in conventional passenger car without alterations. Motor mounts cannot be removed or altered. Valve covers must be steel or aluminum.
(B) SPEC ENGINE - If track is allowing Spec Engine Option, driver must designate he/she is running spec engine each race. Maximum 361 c.i. (GM), 362 c.i.(Ford), 364 c.i. (Chrysler). Steel heads only. No angle milling of heads. $800 claim on heads - following claim rules apply. (Head claim does not include injection system, valve covers and push rods, but does include stud girdle, rocker arms and head bolts.). Camshaft must be flat tappet. No roller cam bearings. No offset or mushroom lifters. No down-nozzle heads allowed. Any size length nozzles allowed. No titanium engine parts allowed except valve spring retainers. No aluminum blocks, crankshaft and connecting rods must be steel. Engine limited to two valves per cylinder. Spec engine subject to tear down by officials at any time. Drivers running spec engine are allowed to claim only cylinder heads of drivers running claim engines. Spec engine cars will be specifically marked.
SPEC ENGINE PROTEST PROCEDURES - Within 5 minutes after race, any driver starting feature can protest any spec engine for $100. Promoter may also protest any spec engine. A direct measurement of cubic inches may also be done at this time. Crankshaft and connecting rods may be checked. $100 will be returned to protestor if car is found illegal. If car protested is found legal, $100 protest fee will be paid to car being protested. If heads are found illegal, or if driver refuses to submit to protest, it will result in forfeiture of all cash and contingencies, trophies and points earned in feature for first infraction. Second violation will result in suspension from all I.M.C.A. sanctioned events for 30 days and until such time as a $1,000 fine is paid to I.M.C.A.
19. NON-SPEC ENGINE CLAIMING RULES: Refer to 2005 Official Rule Book for claim eligibility requirements.
(A) $825 cash claim on engine. $25 to wrecker for pulling engine.
(B) Claim does not include: 1. injection system (on normally aspirated engine, intake manifold does not go with claimed engine), 2. oiling system (Cannot alter timing. Driver doing claiming must furnish oil pan on claimed engine); 3. ignition system (magneto, wires), 8. headers, 9 carburetor, 10. starter, 11. motor mounts, 12. sending unit and switches for oil pressure and water temperature, 13. carburetor adapter, 14. fan and pulleys, 18. dip stick, 19. water pump, 20. fuel pump, 21. oil restrictors (must furnish plugs), 22. water outlet and restrictor, 23. valve cover, 24. valve cover breathers.
(C) See Official 2005 I.M.C.A. rule book for detailed claim eligibility requirements, procedures and penalties.
20. POINT STRUCTURE AND PROCEDURES - Refer to Official 2005 I.MC.A Rule Book or www.imca.com
21. EIRI (Except in rare instances) Decisions of I.M.C.A. Official(s) are final and binding without exception. In some cases, track safety rules may take precedence over I.M.C.A. rules - any discrepancy between I.M.C.A. and track rules should be brought to the attention of I.M.C.A. Any rule changes or clarifications during the course of the year will be published in Inside I.M.C.A., the official newsletter of I.M.C.A., and will be considered as an official part of these rules.