Your engine’s valves are like the doors to a house. They open to let air and fuel in and close tight to keep the power inside. But sometimes, these "doors" get damaged. Understanding why is the first step to fixing them.
If you were building a door for a house, you would want the edge of the door to be perfectly flat, and the door frame to be perfectly flat. If they match exactly, they close tight.
In engine repair, you might think the same rule applies. If the valve seat is cut at...
You set up your machine, turn on the motor, and grind the valve. You are expecting a mirror-like finish. But when you pull the valve out, it looks like the surface of a vinyl record. It has tiny waves, ripples, or rough lines across the face.
In the machining world, we call t...
Imagine spinning a top on a table. If it is perfect, it spins smoothly in one spot—it almost looks like it is standing still. Now, imagine that top is slightly bent. It wobbles. It wanders around the table. It vibrates.
Your engine valves are just like that spinning top. Th...