A group of modders has rebuilt Halo inside of the Half-Life engine, uniting the two FPS games into a new experience you can play now.

Valve stem seals are important to control consumption of lubricating oil for engines and to prevent an air pollution problem by unclean exhaust. It is required for valve stem seals to have stable ...

At the HOT ROD How-To section, you’ll learn how to make improvements to your own special hot rod, drawing from the DIY knowledge of the HOT ROD team to learn more about how-to make more power ...

These ten Harley-Davidson engines are just as legendary as the models they powered - and they will run forever with the right maintenance.

These are the engines that built Toyota's legacy of reliability.