The bore of a cylinder (along with the stroke and the number of cylinders in the engine) is what determines displacement. Increasing the bore can help boost the horsepower of your engine, which is ...

While a motorcycle might have massive tires, a laid-back touring stance, or dual chrome exhaust tips, one thing often stands out – the exposed engine. Highlighted with finned cylinders, the exposed ...

There's an old saying in engine tuning that when adjusting the mixture of your engine you can be too rich a bunch of times, but only too lean once. With that in mind, determining the air-fuel ratio ...

The first of Union Pacific's third-generation GTEL locomotives. Wikimedia Commons/Union Pacific. The combination of advances in engine management technology, in the design of heat exchange technology ...

Port fuel injection (PFI) was a major milestone in the early '80s. The integration of PFI rapidly changed the way fuel was delivered by increasing fuel economy and improving engine performance. Even ...