Two-stroke engines used to be ubiquitous in dirt bike racing, thanks to their lightweight construction and horsepower. Packed in a dirt bike frame, they make a motorcycle playful in the corners and ...

Top Fuel drag races feature a top of its class dragster that is unbelievably fast. However, exactly how much horsepower can ...

Gasoline direct injection, or GDI, is one of the most crucial bits of technology in the modern internal combustion engine. In engines equipped with GDI, highly pressurized gasoline is sprayed directly ...

The carburetor didn't fade away — it was federally regulated out of existence.

High-pressure common rail fuel (HPCR) systems are standard on nearly every diesel engine today, from heavy equipment to over-the-road trucks, light-duty trucks, large generators and more. HPCR fuel ...

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 ...

The days of electronic fuel injection referred to as Black Magic are over. It has taken hot rodders long enough to figure out carburetion, and with the advent of EFI, the fear of "something new" ...

It's a trend we are seeing a lot more of: Even the most dyed-in-the-wool carburetor guys are ditching their mechanical mixers for electronic fuel injection. One recent convert explained his motivation ...

Land Cruisers have been prowling the earth for more than 40 years, with power provided by carbureted gasoline engines, or, outside the U.S., diesel engines. Until 1993 the F series engines were used ...

Westport and Volvo are demonstrating a 500-hp truck with diesel-like efficiency — one that also offers what Westport says is ...