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2007 RS 4 Sedan Technical Specifications Technical Specifications 2007 Audi RS 4 Sedan ENGINE: Type V8 spark-ignition engine with FSI Direct Injection, 4-valve technology, two light-alloy cylinder heads both with double overhead camshafts (DOHC), two inlet valves, two sodium-cooled exhaust valves, intake manifold with integrated charge movement and naturally-aspirated high-revving setup to 8250 rpm Management/mixture preparation Fully electronic gasoline direct injection with air-mass measurement, mapped ignition with solid-state high-voltage distribution, continuous camshaft adjustment for the intake and exhaust valves, Bosch MED 9.1 coordinated torque control Arrangement Front mounted Bore 3.33 in. 84.5 mm Stroke 3.65 in. 92.8 mm Displacement 254 cu. in. 4163 cc Compression ratio 12.5 : 1 Fuel requirement Premium unleaded 91 octane Horsepower (DIN) 420 hp @ 7800 rpm Max. Torque 317 lbs.-ft. @ 6000 rpm ENGINE DESIGN: Cylinder block Aluminum alloy Cylinder head Aluminum alloy Valve train / intake Intake camshaft adjustment, DOHC chain driven, hydraulic lifters Cooling system Water-cooled, thermostatically controlled radiator fan Lubrication system Gear pump, pressurized, full flow with oil cooler Fuel injection FSI Direct Injection Emission system Two tubular manifolds, two primary catalytic converters, two underfloor main catalytic converters, cylinder-bank selective lambda control with permanent lambda control ELECTRICAL SYSTEM: Battery 12 volts 95 amp/hr Alternator 14 volts 190 amp DRIVETRAIN: Transmissions Type quattro Manual 6-speed Gear ratios: 1st 3.667:1 2nd 2.211:1 3rd 1.520:1 4th 1.133:1 5th 0.919:1 6th 0.778:1 Final Drive 4.111:1 Torque Split asymmetrical/dynamic "40/60 rear-biased" torque split; up to 100% power can be transferred to either front/rear axle Front Differential Hypoid gear, electronically locking (EDL) Center Differential TORSEN® differential providing automatic and variable front to rear power proportioning ...
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