Source: Catalogue Porsche Museum. Text Peter Schneider.
Apart from on a single-cylinder test rig, the present system was also implemented in the type 753.
To our knowledge, Porsche never participated in a race with a desmo engine, although the test results of the desmodromic valve control were very good.
Source: Mezger, ATZ 67/3 p. 71). Hans Hoenick is cited as the inventor of the system.
[Classification = Group 5]