Researchers aim to meld the best attributes of both the power-dense two-stroke and the vastly cleaner four-stroke engines. I can never resist a good oddball engine, and this one’s pedigree is ...

When I went to school for engine repair in the 1980s, we studied the differences between two- and four-stroke engine cycles extensively. If you're not familiar with engine strokes, understanding the ...

Intake, compression, power, then exhaust. Every 4-stroke engine ever made – about 80% of all engines currently in existence – function on this principle – even rotary engines. But now, Porsche has ...

Six-stroke engines are having a moment. Porsche made waves last year for patenting a six-stroke powerplant that promised more efficiency and power by using a funky planetary gearset attached to the ...

It's been a long time since the automotive world has bothered with the mixing of oil and gas of the two-stroke combustion cycle — but soon, it may come time to rid ourselves of four-stroke engines, if ...

Of the three United States automakers that offer diesel-powered heavy-duty pickup trucks, only two of those diesel engines are V8s. Those V8 diesel engines are the 6.6 Duramax found in offerings from ...

If you regularly tow a large trailer or fifth-wheel RV, it's difficult to ignore the allure of the Ford 6.7 Power Stroke V8. It is the most powerful of America's big three diesel engines, a list that ...