Q. What is a Hemi? A. The design of the combustion chamber influences how well an engine breathes–how efficiently the air/fuel mixture enters and the exhaust gases depart. The combustion chamber also ...

While a lot of automotive engines have one spark plug per cylinder, the HEMI V8 might have two per cylinder. What is the ...

The Chrysler Hemi motor is a 90-degree pushrod V8, ranging in capacity from 3.9L to 6.4L, and with either natural aspiration or supercharging. The name “Hemi” has been applied to this family of ...

For most enthusiasts, the word “Hemi” belongs to Chrysler, yet Chevrolet quietly touched hemispherical combustion chamber design long before and after the muscle car wars. From an early luxury V8 to ...

Turbulent jet ignition from racing helps Jeep's new 2.0L engine deliver 324 HP with improved efficiency in the Grand Cherokee ...

It's only natural for minds to run to Chrysler when the word "hemi" comes up in conversation. While Chrysler didn't invent the hemispherical combustion chamber engine, with that honor going to Allie ...

In its purest form, an engine is nothing more than an air pump; it takes in air and then returns it, although in a slightly modified form. Maximizing an engine's ability to process air will also ...

The intricacies of airflow dynamics through a cylinder head are some of the most difficult concepts to grasp in all of hot rodding. That made it the perfect topic to discuss in the inaugural ...

If internal combustion is a war, then pistons are quite literally on the frontlines. Converting reciprocating energy into rotating force means that the four-stroke process tries to both eject the ...