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4.2L V8 TDI 326 hp

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4.2L V8 TDI 326 hp

Post by LhYnxz on Sun Dec 02, 2007 8:02 am

Configuration
4,134 cc wet sumped 90V8
Cylinders
Bore stroke 83 mm 95.5 mm (0.87 ratio), 516.75 cc/cylinder, vermicular graphite cast iron block, UV laser exposed bore, 90 mm spacing
Crankshaft
chrome molybdenum steel, first and second order forces and moments avoided
Head
aluminum, 4 valves per cylinder, DOHC, 16.5:1 Compression ratio, chain driven camshafts, low-friction roller finger followers with hydraulic valve clearance compensation
Fuel system
Bosch EDC 16 CP, common rail direct diesel injection, one high-pressure pump and separate rail for each row of cylinders, maximum injection pressure of 1600 bar, piezo injectors, up to five injection cycles, eight-hole nozzles
Aspiration
twin electric variable turbine geometry 226,000 rpm max turbochargers (one per bank), maximum absolute pressure 2.5 bars, two intercoolers
exhaust
two maintenance-free oxidizing catalytic converters and a silicon carbide particulate filters
Dimensions
255 kg, 520 mm length
Output
240 kW (326 hp) @ 3750 rpm , 760 N-m @ 1800 - 2500 rpm (elec limited in A8 650 Nm@1600-3500 rpm)
aftermarket 272 kW (370 hp) @ 4000 rpm, 750 Nm @ 1600 rpm
application
Audi Q7 , Audi A8 D3
references
Audi AG (2005-06-09). Audi A8 New Engines In Detail. Press release.
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LhYnxz
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