Valve seat grinder and changer machine for SIOUX & B&D

The Valve Seat Grinder & Changer Machine is a complete engine reconditioning solution designed for precision grinding, resurfacing, and angle correction of valve seats in automotive and industrial engines. Compatible with both SIOUX and Black & Decker (B&D) systems, this machine ensures high accuracy, durability, and professional performance for workshops and engine rebuilders. This system combines a high-speed electric grinder, interchangeable seat stones, pilots, and a stone dressing unit, allowing efficient valve seat reconditioning and angle adjustment without the need for multiple machines.

• Designed to work with SIOUX & B&D tooling (11/16" standard thread) for easy interchangeability.
• Powerful motor (~11000 RPM) ensures smooth and accurate grinding performance.
• Includes grinding stones, pilots, holders, and dresser—enabling full seat correction and angle changing.
• Supports common valve seat angles like 30°, 45°, and 60° for precise engine tuning.
• Equipped with diamond dresser for reshaping stones and maintaining cutting accuracy.
• Ensures perfect centering inside valve guides for accurate seat grinding.
• Built for continuous workshop use with long service life.