9. INSPECT VALVE STEM GUIDE WEAR (a) Using a dial indicator or telescoping gauge, measure the inside diameter of the valve guide. Standard inside diameter: 8.01 — 8.03 mm (0.3154 — 0.3161 in.) (b) Using a micrometer, measure the diameter of the valve stem. Standard valve stem diameter: Intake 7.970 — 7.985 mm (0.3138 — 0.3144 in.) Exhaust 7.965 — 7.980 mm (0.3136 — 0.3142 in.) (c) Subtract the valve stem measurement from the valve guide measurement. Standard oil clearance: Intake 0.025 — 0.060 mm (0.0010 — 0.0024 in.) Exhaust 0.030 — 0.065 mm (0.0012 — 0.0026 in.) Maximum oil clearance: Intake 0.08 mm (0.0031 in.) Exhaust 0.10 mm (0.0039 in.) If the clearance is greater than following values, replace the valve and guide. 10. IF NECESSARY, REPLACE VALVE GUIDE (a) Brake the valve guide using a brass bar and hammer. (b) Heat the cylinder head to approx. 90°C (194°F). (c) Using SST and a hammer, drive out the valve guide. SST 09201-60011