"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." With its circular grinding wheels that chew through materials like metal, tile, and stone, an angle ...

For a high-performance street car, at a minimum you want a precision, three-angle valve job with relatively wide seats able to stand up to years of hot rodding. Quickie parts-store valve jobs won't ...

We may earn revenue from the products available on this page and participate in affiliate programs. Learn More › There are a wide range of tools that can be used for DIY projects and in professional ...

An angle grinder is one of the most widely-used power tools, in part because it’s fun to use and in part because it’s so effective at removing material. Unfortunately, among power tools, it’s also ...

During one of our never-ending technical discussions, Jim Grubbs at Jim Grubbs Motorsports (JGM) suggested that we take a look at the flow difference between 30- and 45-degree valve seats. While ...