There's more to piston shapes than you might think. Whether it's domed, flat, or dished, all pistons have their fair share of pros and cons when it comes to performance and efficiency. Understand that ...

HOT ROD’s archives are chock-full of brilliant tech reports that truly are timeless. This one, drafted by Jim McFarland for our February 1972 issue, provides an extensive look at how important airflow ...

The candle that burns twice as bright burns half as long; we all know that. However, some of the newest engine designs are proving to be more like firecrackers than candles, judging from the number of ...

Free-piston engine generators and linear machines represent an innovative departure from conventional rotary systems, offering high thermal efficiency and operational flexibility by eliminating the ...

The first recognizable internal combustion engine was developed by Nikolaus Otto in 1861. Since then, the gasoline-powered engine has evolved immensely. However, the principles that underlie how ...