Valve Guide Reaming Procedure For Oversized Valve Stems
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Suburban, and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Ream valve guide as necessary to achieve proper valve stem-to-guide clearance with the new, oversized valve stems.
- Always recondition the valve seat after reaming valve guide bores or installing new valves.
- Replace cylinder head if valve guide cannot be repaired or reamed to accept an oversize valve stem.