bike racing engine system K 2 A one-cylinder engine which transmits its power onto two crankshafts via two connecting rods. Good pipils can work out the advantages of such an engine-transmission unit with instruction from the tacher. description ordernumber 482 see also: variable valve timing System Porsche (VARIO CAM) Four-stroke engine with one overhead camshaft (OHC) two stroke engine with diaphragm timing and control cylinder cylinder shutoff