Performance Tool W80570 Small Valve Lapper 5/8" and 13/16" Cup Diameter

The Performance Tool W80570 Valve Lapper is a precision hand tool designed for resurfacing engine valves and valve seats during engine rebuilding and maintenance. This small valve lapper features dual rubber cup sizes to accommodate different valve head diameters, making it ideal for small engine work on motorcycles, ATVs, lawn equipment, and compact automotive engines.

Key Features:

• Dual cup sizes: 5/8 inch and 13/16 inch diameter for versatile valve sizing
• Durable rubber suction cups for secure attachment to valve heads
• Hardwood handle provides comfortable grip and smooth rotation control
• Used with valve lapping compound to create precise valve-to-seat contact
• Essential tool for achieving proper valve sealing during engine rebuilds

To use, apply valve lapping compound to the valve seat, attach the appropriate rubber cup to the valve head, and rotate the lapper back and forth to grind a perfect seal between the valve and seat. This process restores compression and prevents valve leakage, ensuring optimal engine performance. The ergonomic hardwood handle allows for extended use without hand fatigue while maintaining the delicate control needed for precision lapping work.