Intake Valve Opens (IVO): 15° before top dead center (BTDC)
Intake Valve Closes (IVC): 50° after bottom dead center (ABDC)
Exhaust Valve Opens (EVO): 50° BBDC
Exhaust Valve Closes (EVC): 15° ATDC
It's important to note that these timing values are approximate and may vary slightly depending on the specific model and year of your vehicle. It's always best to refer to the manufacturer's specifications or a reputable repair manual for the exact timing specifications for your vehicle.