[Gaitan420]

For most people, simply checking to see if the valve is within spec is sufficient. Here at TOV, where maximum performance is desired, we want to adjust the valve to the minimum clearance so the intake and exhaust valves open as much as possible. The RSX-S's K20A2 valve specs are shown below. Please note the differences between intake and exhaust specs!
Intake: 0.21 - 0.25mm (0.008 – 0.010 in.)
Exhaust: 0.25 – 0.29mm (0.010 – 0.011 in.)