A simple shortcut to lapping valve seats. I've never had luck with those silly suction cup sticks. This method is much more efficient! Demonstrating on a Subaru EJ25 head. Show less

Oct 25, 2023 · I still have a hand crank valve lapping tool that I bought almost 60 years ago. It rotates and reciprocates, advancing every so often. This results in an even contact area for the valve. In …

Place the lapper in between both hands, and using light pressure, rotate the tool back and forth at a moderate pace. The motion is similar to starting a fire with two sticks. Lift the valve up periodically …

Apr 25, 2025 · To lap valves, gather necessary materials, conduct a preliminary inspection, and then clean and oil the valve stems. Apply a grinding compound, attach the rubber cup, and use the valve …

Learn clear valve lapping techniques with this simple visual guide. Improve your engine’s performance today. Follow our step-by-step tips now.

Get a basic understanding of valve lapping tools and compounds in this blog post by the Goodson Techxperts.

How-To: Lap Valves (by hand and drill method explained) How-To Motorcycle Repair 140K subscribers Subscribed

Choose the appropriate lap to suit the valve. Ensure that the lap, component and hands are clean. Initially apply a small quantity of 14 Micron Kemet Diamond Compound to the grey side of the lap …

Apr 9, 2024 · Learn how to use a hand valve grinder and lapping tool to achieve the perfect seal on your vehicle's valves. Step-by-step guide with tips and tricks.

Nov 20, 2025 · Lapping valves can be a beginner-friendly process if approached with the right tools, patience, and an understanding of the steps involved. This guide will break down the process, …