Valve Guide

Clearance (stem-to-guide)
Intake 0.02 - 0.05 mm (0.0009 - 0.0020 inch) 0.1 mm (0.0039 inch)
Exhaust 0.05 - 0.085 mm (0.0020 - 0.0033 inch) 0.15 mm (0.0059 inch)