Nissan’s variable-compression turbo (VC-Turbo) is a unique engine capable of variable compression adjustment. Unlike traditional engines, which have a fixed compression ratio, the VC-Turbo engine ...

The biggest controversy of the winter break, at least for now, has been settled. A solution developed by Mercedes to increase ...

With every passing day the Mule provides opportunities beyond our original expectations. Since the 467ci engine belongs to HPP editor Tom DeMauro, it is at our beck and call. This affords HPP the ...

Even before the first collective on-track Formula 1 action of 2026, there has been talk about the new engine regulations in ...

Tucker Ryals;Gainesville, FL: I'd like to pose a question regarding an article Jeff Smith wrote on the Chevy 5.3L motor "Bolt On a Cam and Heads and Add 120+ HP" (April '08). I read the article with ...

We may receive a commission on purchases made from links. While browsing auto repair and maintenance tools at your local parts store, you've likely come across compression testers like the Orion Motor ...

The Porsche-Hilite technology is comparatively simple, and could be offered to every automaker if and when VCR comes to market. Share on Facebook (opens in a new window) Share on X (opens in a new ...

Want to know how healthy or unhealthy your engine really is? Get yourself a compression tester and find out. Despite how complex many modern vehicles are, you can do many common repair and maintenance ...