The LITO EXCAM SYSTEM (1966) is a patented semi-desmodromic adjustable valve gear mechanism. Two adjustable excenters are driven at half crankshaft RPM and their movements are transformed to a more or less fore- and aft motion by two fully rollerized “connecting rods”. The valves are opened by two adjustable cam-ground rocker arms pressing on valve plungers. The valves are closed by two hairneedle type springs with varying tension. The system enables you to alter both timing and lift and tune the engine for fast or slow conditions. Source: http://www.dirttrack.clara.net/lito.htm
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