Valve Guide Servicing
- Check clearance between valve stems and valve guides. If clearance exceeds 0.004" (0.10 mm) for intake or 0.005" (0.12 mm) for exhaust, replace valve and/or valve guide.
- To replace valve guide, drive toward combustion chamber with installer/remover tool (09201-60011).
- After removing guide, measure valve guide bore in cylinder. If guide bore is more than 0.5519" (14.018 mm), machine the bore to 0.5531 - 0.5539" (14.050 - 14.068 mm).
- Install oversize valve guide. Oversize guide will measure 0.5519" (14.018 mm). Drive new guide in from top of cylinder head.
- When properly installed guide should extend 0.689" (17.5 mm) from top of cylinder head.
- Intake valve guide length is 2.13" (54 mm) and exhaust guide is 2.32" (59 mm) long. After installing, ream guide for proper clearance.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Protrusion is the same for intake and exhaust guides.