Valve Seat Grinding Stones Set of 12 for Grinder Alignment & Cylinder Head Repair with 80 Grit Thread & 0.385” Top - Compatible with Sioux Grinding Machine - 11/16 Inches

Restore the seat. Recover the compression. Rebuild with confidence! Handle valve seat grinding across a wider range of seat sizes with these 12 pieces grinding stones set designed for cylinder head repair, valve seat refacing and engine rebuild operations in workshop environments. This set includes 12 valve seat grinding stones covering extended seat diameters, supporting grinding and finishing processes across multiple engine applications within a single setup. The stones are made from 80 grit medium aluminum oxide pink material with verified vitrified bond, built for controlled grinding performance during valve seat operations. These stones are used to engage valve seat surfaces during material removal and finishing stages depending on dressing condition, applied pressure and operational setup in workshop use. The size range from 1 inch to 2-1/2 inch allows coverage across commonly used and extended valve seat diameters, supporting flexibility in handling different cylinder head configurations. This wider size range reduces the need for multiple tool changes during grinding operations and supports consistent workflow in workshop environments. Each stone is designed with standard 11/16 thread for compatibility with related grinding systems used across automotive machine shop setups. This configuration supports stable mounting and proper engagement during grinding cycles across different compatible systems where applicable. The stones can be dressed to required angles while maintaining thread integrity, allowing adjustment based on valve seat profile and specific grinding requirements. This supports controlled seat formation and finishing across different engine repair tasks where accuracy and consistency are required. This set is used in valve seat grinding operations where extended size coverage, controlled grinding performance and compatibility with standard systems are required for cylinder head repair, valve seat refacing and engine rebuild applications

• Valve Grinding Stones for Cylinder Head Repair: Used for grinding and finishing valve seat surfaces during cylinder head repair and engine rebuild operations in workshop environments. Includes 12 grinding stones configured for valve seat grinding using Sioux style systems and compatible setups where applicable across automotive applications.
• 12 Stone Sets for Multiple Seat Sizes: Supports valve seat grinding across different seat sizes during refacing and resurfacing operations. Includes sizes from 1", 1-1/8", 1-1/4", 1-3/8", 1-1/2", 1-5/8", 1-3/4", 1-7/8", 2", 2-1/4", 2-3/8" to 2-1/2" used depending on valve seat diameter and application requirements.
• 80 Grit Aluminum Oxide Stones for Controlled Grinding: Engages valve seat surfaces during grinding and finishing stages with medium grit composition. Made from aluminum oxide with verified vitrified bond, used for material removal and finishing depending on dressing condition, pressure and setup in workshop operations.
• 11/16” Thread for Standard Sioux Style Mounting Setup: Designed for compatibility with standard 11/16” thread stone holders used in valve seat grinding systems. Supports stable mounting and proper engagement during grinding cycles across Sioux style and compatible setups used in automotive machine shop environments.
• Stones with Angle & Valve Seat Profile Control: Stones can be dressed to required angles while maintaining thread integrity during repeated use. Supports adjustment based on valve seat profile and grinding requirements, enabling controlled seat formation across different engine types and repair applications.