Engine: 196cc OHV Clone Recommended Class: Cheater Stock Target (MAX) RPM: 7000 Spring Pressure (In / Ex): 18 lbs Valve Lash (IN/EX): .003" Ignition Timining: 30 Deg BTDC INTAKE LIFT: .265 Dur @ .050": 225.5 Deg. C/L: 108 ATDC EXHAUST LIFT: .265 Dur @ .050": 236.8 Deg. C/L: 108 BTDC