Last month's "How It Works" story gave you the basics of the four-stroke cycle, describing the motion of the intake and exhaust valves in relation to the piston moving up and down in the cylinder.

When it comes to upgrading small-block engines, camshafts are a popular choice for enhancing performance. Different camshaft types can significantly alter how an engine breathes and performs, offering ...

Even the most seasoned engine builders usually feel uncomfortable when conversation drifts to the intricacies of camshaft design. Surprisingly, the common termsduration,lobe separation angle, and ...

When it comes to modern internal combustion engines, there are two types that dominate the industry: pushrod and overhead camshaft (OHC). While pushrod engines were the stars of the show for many ...

With diesel fuel prices at an all-time high, we've been testing various products in an effort to find ways to increase the efficiency of the diesel engine. Our hope is to find results that will offer ...

It's appropriate, we think, that a camshaft has lobes, since this relatively simple device is so often called the brains of an engine. And indeed, a camshaft does direct several engine functions in a ...

Your car's camshaft — or camshafts if your vehicle has a DOHC engine — is a vital component that plays a critical role in the internal combustion process. Its job is to synchronize the opening and ...

A small gap with big importance in the performance and health of an engine - here's everything you need to know.