2007 Vehicle Technical Specifications - SCCA Pro Racing

2007 Vehicle Technical SpecificationsVehicle _325 E90__ Class_Touring_1. GENERAL VEHICLE DESCRIPTION:A. Body Type (Sedan, Coupe, Hatchback): Sedan B. Engine Location (front, rear, mid): FrontC. Drive Type: Front: Rear: X AWD: D. Wheelbase: 2761 mmE. Induction Type (Turbo, Super, N.A.): N.A. F. Appendix A Competition Weight: See Appendix AG. Rear Weight Bias Percentage: See Appendix A2. ENGINE:2.A.1. OEM Engine Designation:N52B252.A.2.Displacement (Max): 2559 cc 2.A.3. Number of Cylinders: 62.A.4. Rev-Limit: Required: (Y / N) Y 2.A.5. @ RPM SeeAppendix A2.A.6. Method:ECU2.A.6. Compression Ratio (Max): 11:1 2.A.7. Piston Stroke (Max): 78.9 mm2.A.8. Restrictors – (teams are required to beprepared to install these restrictors):% ofReduction:20, 25, 30,35, 40Hole Diameter(mm):68.0, 65.8, 63.6,61.3, 58.92.A.9. Cylinder Firing Order: 1.5.3.6.2.4 2.A.10. Direction of Engine Rotation (incl. cams): ClockwiseB. CYLINDER BLOCK: Part Number: 11 11 0 401 1232.B.1. Cylinder Block Material:AJ62 Alloy Magnesium / Aluminum2.B.2. Cylinder Bore (Max): 83 mm *Note: Includes any allowed overbore, usually 1mm over stock.C. CYLINDER HEAD: Part Number: 11 12 7 553 9872.C.1. Cylinder Head Material:AluminumD. VALVE SYSTEM:2.D.1. Number of Valves per Cylinder: 2.D.1.a. Intake: 2 2.D.1.b. Exhaust: 22.D.2. Valve Head Diameter (Max): 2.D.2.a. Intake: 32.1 mm 2.D.2.b. Exhaust: 26.9 mmE. INTAKE PORT DIMENSIONS:2.E.1. At Inlet Manifold Face (Stock): 2.E.1.a. Height: 30.2 mm 2.E.1.b. Width: 50.2 mm2.E.2. Intake Port Work Allowed (Yes or No): Yes 2.E.2.a. Depth from Face: 25 mmF. EXHAUST PORT DIMENSIONS:2.F.1. At Exhaust Manifold Face (Stock): 2.F.1.a. Height: 36.0 mm 2.F.1.b. Width: 36.0 mm2.F.2. Exhaust Port Work Allowed (Yes or No): No 2.F.2.a. Depth from Face: n.a.G. PISTON & CONNECTING ROD:2.G.1. Connecting Rod Length (Axis Centerline to Axis Centerline) Stock: 154.6 mm Approved: 154.6 mm2.G.2. Reciprocating Assembly(rods,caps,bolts,piston,rings,pin,clips, bearings)Stock:904 g Min: 904 g2.G.3. Aftermarket Rods Allowed (Yes / No): Yes Aftermarket Pistons Allowed (Yes / No): YesDate Issued: 11.02.2006 Revision #: Draft Revision Date:3 11/01/04