Master Technical Bulletin (February 2012)
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Master Technical Bulletin (February 2012) The following is a compilation of Technical Bulletin items authorized by the Club Racing Board. (Rules changes approved by the Board of Directors are found in the Recommended Rule Changes document). The Fastrack month or web posting date is indicated in the header for each class or category. The effective date is the first day of the Fastrack month unless otherwise indicated. GCR None. Formula – January FA 1. In 9.1.1.A, Table 2, Swift 016, Notes, change the wing requirements as follows: “Wings: The wings and end plates may not be changed. The wings must have a Swift label visible on each wing showing the following part numbers: front wing (part no. 01612-0010), front flaps (part no. 01612-1021LorR), lower element, rear wing (part no. 01613-0010), and upper element, rear wing (part no. 01613-0013). All wings must conform to the wing angles and dimensions specified in the Appendix A illustrations provided by Swift Engineering. Wings and endplates may be exact copies of the original Swift components. Contact the SCCA Technical Services department for copies of the wing profiles and end plate templates." Formula – February FB 1. #6258 (Club Racing Board) Bodywork rule omission Add a new section, 9.1.1.H.3.i, as follows: “There shall be no forward facing gaps or openings in the bodywork with the exception of those necessary for engine cooling, engine air inlet, shock, or brake cooling. All bodywork shall be firmly attached to the chassis.” F5 1. #6625 (Jack Walbran) F500 593 Rotax Engine Errors and Omissions In section 9.1.1.E.14.A, make the following changes: “Carburetors: The induction system is restricted to two (2) 38mm Mikuni VM 38 round slide carburetors (except AMW). No modifications are permitted to the carburetor bodies. The use of any jets or jet needles is permitted. Carburetor mounting shall be of individual runners, no balance pipes, no plenums unless fitted as standard as on the 493 and 593 engine. 38mm intake boots, BPP 48067860 or Kimpex 07-100-33, shall be used for the 493 and 593 engines. Supercharging, turbocharging, and direct fuel injection are prohibited.” In section 9.1.1.E.14.G, make the following changes: “Rotax 494, 493, and 593 engines: Any Rotax 494, 493, or 593, respectively, model thermostat housing or water outlet elbow may be used. The water bypass may be blocked. Either upper or lower cylinder head water outlet may be blocked in any safe manner to facilitate use of a single water outlet.” Add a new section, 9.1.1.E.14.K, as follows: “K. Rotax 593 engine only: Rotax OEM 0.010” overbore piston P/N 420889171 is permitted. Engines may be overbored as specified by Rotax so that this piston may be fitted. FF 1. #6836 (John Grooms) Request for clarification on intake. Add a new section, 9.1.1.D.3.k.2.a, as follows: “a. Air filters are unrestricted. All air entering the engine must pass through the air filter prior to entering the throttle body. No devices such as, but not limited to, air horn(s), trumpet(s), bell mouth(s), velocity stack(s), vortex generators and or turning vanes are permitted inside the air filter or between the air filter and the throttle body.” Formula – March None. SPORTS CAR CLUB OF AMERICA, INC 1 of 21 PO Box 19400, Topeka, KS 66619-0400 (800) 770-2055 Fax (785) 232-7214 www.scca.com Master Technical Bulletin (February 2012) Grand Touring – January GT2 1. In 9.1.2, GT2, Nissan engines, add: Engine Family Engine Bore x Stroke Disp. Head Valves / Fuel Weight Notes Type (mm) (cc) Type Cyl. Induction (lbs) Alum, 40mm chokes VG33 SOHC 81.5 x 83.0 3275 2 2230 Crossflow or 37mm SIR Grand Touring – February 1. #6931 (GT Committee) GT Floor pans In section 9.1.2.F.4.b.2, clarify as follows: “Chassis, frame, or subframe may be lightened, reinforced, or replaced, provided components and attachments are not relocated, except where specifically permitted. Reinforcing does not authorize the use of belly Floor pans are only permitted behind forward of the firewall or the trailing edge of the front wheel opening, whichever one is furthest forward, or aft of and forward of the front edge of the rear wheel opening. The floor behind the rear wheel opening shall be flat and follow, but not exceed, the line of the rear fender bottom. Only the fuel cell container may protrude or extend below this plane. There shall be no pans, whether factory supplied or otherwise, between the spoiler pan and the floor pan nor between the floor pan and the floor behind the rear wheel opening.” In section 9.1.2.F.4.b.12, clarify the last sentence, as follows: “The sSpoiler ”pans” are only permitted area forward of the leading edge of the front wheel openings and shall be flat and follow, but not exceed, the line of the front fender/spoiler bottom.” GT3 1. #6648 (John Bauer) Correct the Acura B18B inlet specification. Honda Engines, B18B, Change Fuel Induction as follows: “31mm SIR unrestricted” GTL 1. #6582 (Peter Zekert) Add Kia Rio & Kia Forte to GTL In GTL, add Kia Rio as follows: Model Years Body Drive- Wheel- Notes Style line base (in) Kia Rio& Forte 2000-Present 2DR RWD 97.0 2. #6583 (Peter Zekert) Allow 2010–present Hyundai Accent in GTL In GTL, add the Hyundai Accent as follows: Model Years Body Drive- Wheel- Notes Style line base (in) Hyundai Accent 2010-Present 2DR RWD 97.0 3. #6610 (Peter Zekert) Classify 1.6L Gamma DOHC engine In GTL, add the following engine: Engine Engine Bore x Disp. Head Valves / Fuel Weight Notes Family Type Stroke (cc) Type Cyl. Induction (lbs) (mm) Alum, Kia Gamma DOHC 77.0 x 85.44 1591 4 23mm SIR 1950 Crossflow . 4. #6611 (Peter Zekert) Classify 1.8L DOHC 16V engine form Kia Sephia In GTL, add the following engine: SPORTS CAR CLUB OF AMERICA, INC 2 of 21 PO Box 19400, Topeka, KS 66619-0400 (800) 770-2055 Fax (785) 232-7214 www.scca.com Master Technical Bulletin (February 2012) Engine Engine Bore x Disp. Head Valves / Fuel Weight Notes Family Type Stroke (cc) Type Cyl. Induction (lbs) (mm) Alum, 22.5 mm BP DOHC 83mm x 85mm 1839 4 2270 . Crossflow SIR Grand Touring- March GT 1. #6931 (GT Committee) GT Belly pans Clarify section 9.1.2.F.4.b.2, as follows: “Chassis, frame, or subframe may be lightened, reinforced, or replaced, provided components and attachments are not relocated, except where specifically permitted. Reinforcing does not authorize the use of belly pans forward of the firewall, or aft of the front edge of the rear wheel opening. There shall be no pans, whether factory supplied or otherwise, between the spoiler pan and the floor pan nor between the floor pan and the floor behind the rear wheel opening. The floor behind the rear wheel opening shall be flat and follow, but not exceed, the line of the rear fender bottom. Only the fuel cell container may protrude or extend below this plane.” In section 9.1.2.F.4.b.12, clarify the last sentence, as follows: "The sSpoiler "pans" are only permitted area forward of the leading edge of the front wheel openings and shall be flat and follow, but not exceed, the line of the front fender/spoiler bottom." GT2 1. #6699 (William Davis) Bore/Stroke request Sunfire/Ecotech In GT2, Engines - Chevrolet: Add the GM EcoTec engine: Engine Family Engine Bore x Stroke Disp. Head Valves / Fuel Weight Notes Type (mm) (cc) Type Cyl. Induction (lbs) Alum, EcoTec DOHC 88.9 x 94.6 2349 4 2080 . Crossflow 2. #6880 (Club Racing Board) Specify where the 997 restrictor comes from. In GT2, Engine - Porsche, 3598cc, change the notes as follows: "996 and 997 Porsche Cup cars only. 997 Porsche Cup car must use 62mm (max) ID X 90mm OD X .060" +-.005", mounted flush against throttle body intake flange and retained by stock bellows. flat plate restrictor; See Appendix F. Flat Plate Intake Restrictor, except last bullet. Mount as supplied from Porsche." GT3 1. #7066 (Roger Welling) GTCS Correction/Clarification In GT3, Nissan engines, change the spec line for the VG30 as follows: valves/cyl. : 4 2 Fuel induction: Automotive type sidedraft w/40mm choke(s) or 37mm SIR 33mmSIR Weight: 2280 2230 w/37mm SIR 2270 Notes: An SCCA approved F.I. kit of OEM origin is allowed. Contact the National Office for part numbers and specs. GTL 1. #6982 (David Ligon) Add Toyota MR2 85-89 to GTL. In GTL, Toyota cars, add a new classification as follows: Model Years Body Drive- Wheel- Notes Style line base (in) MR2-MKI 85-89 2DR RWD 91.3 Hood bulge allowed SPORTS CAR CLUB OF AMERICA, INC 3 of 21 PO Box 19400, Topeka, KS 66619-0400 (800) 770-2055 Fax (785) 232-7214 www.scca.com Master Technical Bulletin (February 2012) Improved Touring – January None. Improved Touring - February 1. #4330 (Charles O'Toole) reexamine heater core plumbing allowances. Clarify section 9.1.3.D.3.g as follows: “Engine coolant fluid, coolant/heater hoses and clamps maybe substituted. Heater hoses may be plugged or bypassed (looped) or removed. Heater water control valve(s) may be added or substituted. Heater core and hoses shall not be removed.” Improved Touring - March ITS 1. #6647 (Brad Barnhouse) classify 323 IS coupe E36 In ITS, classify the BMW 323is (E36) (1999) as follows: ITS Engine Bore x Valves Comp.