Water-cooled? What in the world do these ... especially amongst the passionate fanbase of Harley riders. We judged these engines based on a holistic approach, examining power, reliability ...

With 16 cars and 12 motorcycles, all air-cooled, this simple means of internal combustion finds the spotlight.

Harley-Davidson has been around for 120 years ... One such example was its first water-cooled engine developed in conjunction with Porsche for the V-Rod in the 2000s. Another deviation from ...

For over a century, Harley-Davidson has been ... All the while, every Porsche engine remained cooled by the atmosphere until ...