Resurfacing or Machining, is basically the process of making something flat again. Warpage or poor finish are common causes. Usually, caused by excessive heat or damage. Most often done on engine blocks, cylinder heads and manifolds.

Valve Job – Why Would You Need One – Causes – What To Expect
You may have heard the term, valve job, because older engines frequently needed their valves reconditioned. You rarely hear about, valve problems or valve jobs in today’s engines. Because, modern (OHC) engines, have fewer parts […]