You've heard that pistons have rings, but have you ever wondered why there are three? Here's how piston rings work together ...

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 ...

In a conventional application, there are three rings per piston. The top ring is called the compression ring. Its purpose is to seal the combustion gas pressure, transfer heat from the piston to the ...

For a time, the Wankel rotary engine seemed like the future. In 1963, German automaker NSU—later absorbed into Audi—debuted the Wankel Spider, the first internal-combustion production car not powered ...

You might think that four cylinders are inherently better than three, but is that really the case? The answer is more nuanced ...

Fresh off his inaugural piece in January's Oval Track Tech and Parts Guide, we caught up with Gary Geving from Chick-O-Motorsports to give us some tips and tricks on post-season teardown maintenance ...

Kia is recalling over 100,000 vehicles due to issues involving the piston oil ring. The affected vehicles are Kia MY SOUL and Seltos from 2021, 2022 and 2023 that are equipped with a 2.0L Nu MPI ...

Most modern cars are equipped with engine management systems that utilise knock sensors to detect excessive cylinder knock ...