Engine design · Piston Pressed light alloy

Engine design Piston Pressed light alloy Cylinder Lokasil oil running surface Cylinder head 3-part light alloy head Valve arrangement 2 inlet valves suspended in parallel V arrangement 2 exhaust valves suspended in parallel V arrangement Valve diameter Inlet 40.2 Oulet 34.5 Valve travel Inlet 11.0 mm (large valve lift) 3.6 mm (smaller valve lift) Outlet 11.0 mm Valve control Inlet: via switchable flat-base tappets Outlet: via flat-base tappets Camshaft From the crankshaft via a tooth-type chain to the intermediate shaft, and from there to the inlet and exhaust camshafts via one roller-type chain each. Camshaft adjustment Porsche VarioCam Plus with 42° adjustment (vane adjuster and valve travel adjustment) Valve clearance Hydraulic valve clearance compensation Valve timing in late position Inlet opens at 9° after TDC with 1 mm valve travel and zero Inlet closes at 61 ° after BOC clearance Outlet opens at 50° before BOC large valve travel Outlet closes at 4° before TOC Valve timing in late position Inlet opens at 39° after TOC with 1 mm valve travel and zero Inlet closes at 19° after BOC clearance Outlet opens at 50° before BOC small valve travel Outlet closes at 4° before TOC Intake system 2-stage tuned-intake system (plastic) Shifting rpm 2700/5100 Engine cooling Engine cooling Water cooling; 2 radiators ahead of the front wheels. (Additional radiator for Tiptronic vehicles) Two electric fans, controlled in two stages