For owners of a 2006 Cummins 5.9 diesel engine, every component in the engine bay plays a critical role in overall performance and longevity. Valve covers and their securing bolts are essential for ...

The Chevrolet small-block engine was a brilliant piece of engineering, attested by the fact that well over 100,000,000 have been built. However the first generation was not as oil-tight as later ...

A certain amount of leeway is built into almost every factory part. Take Project Rust Bucket's turbocharger for example, which is now producing 37 pounds of boost instead of less than 20. Or the ...