What's the difference between single and dual overhead cam engines?

Ever wondered what people are talking about when they say "dual overhead cam"? Don't worry, because we're here to explain it ...
Digital Trends

Valve just released the source code for Team Fortress 2 — on purpose

Valve just released the entirety of the Team Fortress 2 client and server source code, and it wasn’t even an accident. In a post on the Team Fortress website titled “The TF2 SDK has arrived!” Valve ...

Valve Proves Community Mods & Hardware Can Matter More Than Constant Releases

Valve reshaped PC gaming through Steam since 2003 and a flat team model, helping you understand what makes its platform and ...
DualShockers

Valve has released the Team Fortress 2 SDK, which means we can expect a load of new content from the modding community.

Alex Co has been writing about games for 15 years and running, and is a huge fan of online shooters and anything horror related. Valve releases TF2 SDK to the public for modders, allowing changes ...
Jalopnik

Why Do Some Engines Use Hydraulic Lifters?

The engines of yesteryear were pretty simple, with tappets clackity-clacking away on cam lobes, opening valves, and making a ruckus while doing it. Mechanical lifters were adequate for valve operation ...
GameSpot

Team Fortress 2's Source Code Is Out, Fan-Made Games May Be Next

GameSpot may get a commission from retail offers. Team Fortress 2 has been a very durable performer for Valve, having remained active for the better part of two decades. And while there have been ...
GosuGamers

Valve releases full Team Fortress 2 source code, allows modders to run wild

Valve has officially released the full client and server code for its seminal first-person shooter Team Fortress 2 online. Fans of the game are encouraged to “change, extend or rewrite” Team Fortress ...