Small internal combustion engines usually keep things simple, relying on carburetors to handle metering the correct amount of fuel and air. Recently, [Carlos Takeshita] decided his small engine could ...

Small internal combustion engines usually keep things simple, relying on carburetors to handle metering the correct amount of fuel and air. Recently, [Carlos Takeshita] decided his small engine could ...

Harley-Davidson is a brand deeply tied to tradition, from its distinctive rumble to hands-on garage tuning. Carbureted engines were a part of that rugged image for decades. Owners loved tinkering with ...

Turns out the old technology did a few things no computer has matched.

Fuel injection dynamics underpin the performance, efficiency and emissions profile of modern diesel engines. Central to this process is the controlled delivery of liquid fuel under high pressure into ...

Port fuel injection has some big advantages, but automakers increasingly are using gasoline direct injection instead. The ...

Automobile engines have undergone tons of changes over the years, primarily to make them more efficient. For the most part though, engine changes result from a string of iterative improvements on ...

When dealing with boost, a stronger block is always a good plan, so this build started with a Donovan aluminum HC 400 block. Best of all this priority-main block tips the scales at a scant 100 pounds!

Motorcycle manufacturers have been trying to kill the carburetor for decades. Münch was the first to introduce fuel injection in the terrifyingly huge 1973 Mammoth TTS-E 1200, but that was a ...