The two valves are then closed, and a water outlet valve in the upper part of the tank is opened. (newscientist.com)
In addition, you can expect the standard engine features such as hollow stem outlet valves, a one piece chain drive and a cam follower. (thesupercars.org)
Besides, the type with a manual transmission have the different cams, titanium valves, compression ratio was increased up to 11.5, enlarged 35 mm inlet valves, and 29.5 mm outlet valves. (mywikimotors.com)