2007 Vehicle Technical Specifications - SCCA Pro Racing

2007 Vehicle Technical SpecificationsVehicle DevelopmentDRAFTApproved for RacingVehicle _325 E90__ Class_Touring_This draft of the listed vehicle’s VTS is posted with the specifications that we currently have for thevehicle. If a specification is highlighted in green, we are waiting to acquire that information from themanufacturer, or from certified documentation provided by the team(s). If a specification is highlightedin yellow, that specification is under review and may not be set until all blanks in the VTS sheet arecompleted. The specifications that are listed, and not highlighted, are considered to be a work inprogress and may be changed without being posted by technical bulletin. Therefore, competitors mayuse the specifications listed to begin preparing their vehicles. The missing specifications will be addedas they are received.When a vehicle is in this draft form, it will be permitted to compete in any World Challenge competitions.Once the World Challenge Technical Staff has determined that this specific vehicle has demonstratedreasonable performance in relationship to other cars competing in the series and all specifications havebeen obtained, then this VTS sheet will be removed from DRAFT status and transformed into a final VTS.From that time forward, all changes to the VTS will be subject to Type II approvals.Competitors needing a specification that is not listed should contact the World Challenge TechnicalManagers to find out when that specification will be available and should not make assumptions as towhat these specs might be unless otherwise directed to do so by the World Challenge TechnicalManagers.Touring Car Teams should contact:Shawn Passen(614) 419-2851 Office(785) 608-9261 Mobilespassen@sccapro.comGrand Touring Teams should contact:Aaron Coalwell(678) 388-9876 Office(785) 608-9139 Mobileacoalwell@sccapro.comDate Issued: 11.02.2006 Revision #: Draft Revision Date:1 11/01/04

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

2007 Vehicle Technical SpecificationsVehicle _325 E90__ Class_Touring_H. CAMSHAFT: Part Number: OR SCCA Profile#: BMWE901A2.H.1. Rocker Arm Ratio: 1:1 2.H.2. Valve Actuation (direct action, etc.): Rocker Arm2.H.3. Type of Cam Follower (roller, solid, etc.): Roller / Solid 2.H.4.Max Lift @ Cam Lobe: 10.5 mm Int10.5 mm ExhI. CRANKSHAFT: Part Number: 11 21 0 402 5302.I.1. Mass (Stock): 20.75 kg 2.I.2. Mass (Min): 20.75 kgJ. FLYWHEEL: 2.J.1. Stock Ring Gear Diameter: 290 mmL. INTAKE MANIFOLD: Part Number: 11 61 7 559 5232.L.1. Port at Cylinder Head Face (Stock): 2. L.1.a. Height: 30.2 mm 2.L.1.b. Width: 50.2 mm2.L.2.a Allow Port Match to Head (Yes/No): No 2.L.2.b Depth: n.a.2.L.3.a Throttle Body Bore Diameter: 76 mm 2.L.3.b Part Number: 13 54 7 516 9462.L.4. # of Throttle Bodies: 1 2.L.5. # of Butterflies per Throttle Body: 12.L.6. Intake Manifold Material: MPEM 2.L.7. Manifold Pieces: 12.L.8.a Intermediate Port Matching Allowed (Yes / No): n.a. 2.L.8.b Depth from Face: n.a.M. REQUIRE ENGINE SEALS LOCATION:2.M.1. Valve Cover Seal #1:2.M.2. Oil Pan Seal #2:Passenger side front.Passenger side front.N. ENGINE MISCELLANEOUS:Port work allow from combustion side 48 mm in Intake port.3. DRIVETRAIN:A. TRANSMISSION:3.A.1. Number of Forward Speeds: 5 3.A.2. Manufacturer: BMW - 23 00 8 278 505BMW - 23 00 7 769 8043.A.3. Gear Ratios: 3.A.3.a. 1st: 2.70 3.A.3.b. 2nd: 1.86 3.A.3.c. 3rd: 1.443.A.3.d. 4th: 1.17 3.A.3.e. 5th: 1.00 3.A.3.f. 6th: n.a.3.A.4. Gear Shift Pattern / Engagement (synchromesh, dog-ring, etc.):H-pattern/Dog-RingC. FINAL DRIVE: 3.C.1. Axle Ratio: 4.10 / 4.27D. DRIVETRAIN MISCELLANEOUS:Axle (BimmerWorld p/n E90WCTC.33.01) allowed.Axle (BimmerWorld p/n E90WCTC.33.02) allowed.Date Issued: 11.02.2006 Revision #: Draft Revision Date:4 11/01/04

2007 Vehicle Technical SpecificationsVehicle _325 E90__ Class_Touring_4. SUSPENSION:4.A. Suspension Type (Double A-arm, etc.): 4.A.1. Front: Mac PhersonStrut4.B. SUSPENSION MISCELLANEOUS:Allow rear carrier subframe (BMW p/n: 33 30 8 282 373)4.A.2. Rear:Multi-Link5. CHASSIS:5.A. See Technical Department for information:5.B. CHASSIS MISCELLANEOUS:6. BODY:6.A.1 Stock Coefficient of Drag (Cd): .30 6.A.2. Total Frontal Area: 2.109 m^26.B. Body Overhang (Measured from Axle Centerline): 6.B.1. Front: 754 mm 6.B.2. Rear: 1011 mm6.C. Stock Body Materials:6.D. Maximum Body Width:Steel body with plastic front and rear fascias.1784 mm6.F. BODY MISCELLANEOUS:Allow front bumper cover (BMW p/n: 51 11 8 041 132 and related trim)Allow rear bumper cover (BMW p/n: 51 12 7 906 501 and related trim)CAMSHAFT DATA FOR CAMSHAFT MANUFACTURERSVEHICLE: BMW N52.B25 Engine for E90 325 (2.5-liter)LIFT DUR. OPEN CLOSE AREALobe(s) – Intake 0.010 349.26 67.32 BTDC 101.94 ABDC 24.620.020 333.48 59.97 BTDC 93.51 ABDC 24.500.030 320.42 53.87 BTDC 86.55 ABDC 24.340.040 308.52 48.30 BTDC 80.22 ABDC 24.130.050 297.22 43.02 BTDC 74.20 ABDC 23.880.060 286.24 37.89 BTDC 68.34 ABDC 23.580.070 275.42 32.87 BTDC 62.55 ABDC 23.220.080 264.66 27.88 BTDC 56.78 ABDC 22.820.090 253.84 22.88 BTDC 50.96 ABDC 22.360.100 242.89 17.82 BTDC 45.07 ABDC 21.840.150 183.17 10.04 ATDC 13.21 ABDC 18.090.200 99.55 50.48 ATDC 29.97 BBDC 10.68Date Issued: 11.02.2006 Revision #: Draft Revision Date:5 11/01/04

2007 Vehicle Technical SpecificationsVehicle _325 E90__ Class_Touring_0.22177 --- PEAK CAM LIFT ---LIFT DUR. OPEN CLOSE AREALobe(s) – Exhaust 0.010 285.48 61.19 BBDC 44.29 ATDC 20.370.020 271.37 54.08 BBDC 37.29 ATDC 20.270.030 260.49 48.63 BBDC 31.86 ATDC 20.130.040 250.99 43.87 BBDC 27.13 ATDC 19.970.050 242.22 39.48 BBDC 22.74 ATDC 19.770.060 233.83 35.30 BBDC 18.53 ATDC 19.540.070 225.62 31.22 BBDC 14.40 ATDC 19.270.080 217.47 27.19 BBDC 10.29 ATDC 18.970.090 209.27 23.13 BBDC 6.14 ATDC 18.620.100 200.93 19.01 BBDC 1.91 ATDC 18.220.150 154.21 3.91 ABDC 21.88 BTDC 15.280.200 85.61 37.55 ABDC 56.84 BTDC 9.190.22223 --- PEAK CAM LIFT ---World Challenge Permitted Cam TolerancesThe camshafts used for this car must meet the specifications listed above within the following permitted tolerances;Duration at the seat (0.0” - 0.02”): +/- 6.5 degreesDuration on flank (0.1” lift – 0.1” before max. lift): +/- 4.0 degreesDuration over nose: +/- 6.0 degreesLift: +/- .005” (0.127mm)Date Issued: 11.02.2006 Revision #: Draft Revision Date:6 11/01/04