JGM performed all of the required machine work on the head, including machining the valve seats to a 15/30/60-degree, three-angle valve job. A normal 45-degree, three-angle valve job employs 30/45 ...

Achieving perfect 30, 45, and 60-degree angles doesn’t have to be difficult – it's all about understanding the geometry behind them. In this video, viewers will uncover four simple yet ...