The 1991 Acura NSX engine features Variable Valve Timing and Lift Electronic Control (VTEC) System. The following schematic shows Acura NSX Variable Valve Timing Lift Electronic Control VTEC Parts Diagram and Components. LEGEND: 1 – Cam lobes for low rpm 2 – Cam lobes for high rpm 3 – Primary rocker arm 4 – Mid rocker arm
