In a recent episode of the Race Industry Now webinar series, Anthony Usher, President of MEC CNC, and Chuck Lynch, Vice President of Technical Service at the Automotive Engine Rebuilders Association (AERA), delivered an in-depth discussion on the latest machining innovations for cylinder heads. The session explored precision machining techniques, valve guide accuracy, valve seat preparation, and gasket surface finishing—all essential elements for maximizing performance, reliability, and longevity in racing engines.