Time was when a valve job was done with some valve-grinding compound and a vacuum cup on a stick. But no more. Today's high performance engines require the same machining precision in the valves that ...

The position of the valve seat in the head is also important. Each time the valve seat is machined, >> material is removed and the seat “sinks” into the head, moving deeper into the port. This tends ...

Fishing reels with actions that are rough around the edges can be fixed with a bit of toothpaste and a lot of elbow grease. The rough action may be from lack of machining of the reel’s drive gears.