Valve Guides Acura SLX I

1. Check valve stem-to-guide oil clearance. Ensure valve stem diameter is within specification. Replace valve guide if clearance exceeds specification. Manufacturer recommends replacing valve and valve guide as a set. See «CYLINDER HEAD»(ref-49505-S23511692642001011500000) under ENGINE SPECIFICATIONS.
2. To replace valve guide, use hammer and Valve Guide Remover/Installer (J-37985) for SOHC and (J-42899) for DOHC. Working from combustion side of cylinder head, drive valve guide out of top of head. Apply engine oil to outside of NEW valve guide.
3. Using hammer and valve guide remover/installer, drive valve guide into cylinder head from camshaft side. Measure valve guide installed height from top of valve guide to cylinder head surface. Ensure valve guide installed height is within specification. See «CYLINDER HEAD»(ref-49505-S23511692642001011500000) under ENGINE SPECIFICATIONS. Using reamer, ream valve guide to obtain specified valve stem-to-guide oil clearance. See «CYLINDER HEAD»(ref-49505-S23511692642001011500000) under ENGINE SPECIFICATIONS.

Scheme 15

1. To measure valve seat margin, install a NEW valve in cylinder head. Measure valve installed height from spring seat to tip of valve stem. Replace valve seats if not within specification. See «VALVES & VALVE SPRINGS»(ref-49505-S32348079412001011500000) under ENGINE SPECIFICATIONS.
2. Measure valve seat width. (Scheme 15) Cut or replace valve seats to reach required width specification. See «CYLINDER HEAD»(ref-49505-S23511692642001011500000) under ENGINE SPECIFICATIONS.
3. Replace valve seat if damaged. To remove valve seat, arc weld a welding rod to valve seat in several areas to shrink valve seat. Allow valve seat to cool. Gently tap on welding rod to remove valve seat. Ensure valve seat area in cylinder head is clean.
4. To install valve seat, heat valve seat area of cylinder head with steam. Cool valve seat with dry ice or refrigerate. Install valve seat in cylinder head. Valve seat-to-cylinder head interference fit should be.004-.006" (.11-.15 mm). Grind valve seat to specified seat width. See «CYLINDER HEAD»(ref-49505-S23511692642001011500000) under ENGINE SPECIFICATIONS.