Cylinder head and valves 21 Cylinder heads 22 Combustion chambers 24 Engine valves 26 Valve trains for OHV engines 30 Hydraulic valve lifters for OHV engines 31 Valve trains for OHC engines 32 Hydraulic lash adjusters for OHC engines 33 Camshafts 34 Camshaft drives and timing 35 Drives for DOHC 39 Tensioners and dampers 40 Variable valve timing 41 Valvetiming diagram 44 Engine illustrations 45 Technical terms 45 Review questions 46