Audi cylinder head with 5 valves and camshaft adjustment recognition of the arrangement of the five-valve technique operation of the valves by use of weaker springs recognition of the channels by varying colours Porsche camshaft adjustment can be operated description ordernumber 1288 see also: high-pressure pump for engines with direct petrol injection (GDI) valve timing model case pump-lines-nozzle in-line injection pump with RSV flyweight governor