What’s the voodoo behind the horizontally opposed cylinder setup only found in Subarus and Porsches? And what sets them apart from inline engines?

Experience the process of resurfacing a six-cylinder diesel engine head, where precision techniques restore efficiency and ...

A quick soap-water test helps you observe any leaks when you have connected your regulator to the cylinder. If a leak is observed check the valve rubber for cracks. If intact, check to ensure the ...

Otherwise no changes in the specifications sheet for the R15M, powered by a liquid-cooled, single-cylinder, SOHC, four-valve engine with variable valve actuation (VVA). This small displacement ...

At the MotorTrend How-To section, you’ll learn how to perform the car improvements you want to do, thanks to DIY knowledge on how-to make an engine more powerful, improve a suspension, have ...

but it does have a new cylinder head to help reduce emissions and improve fuel economy. All four valves are still operated by a single overhead cam, while the NMAX’s elegant and simple variable ...