THERE have been many engine designs over the years, from K-Cycle to Rotary, but two designs have endured; pushrod engines and overhead camshaft engines. There are advantages and disadvantages of both ...

Ford fans do not argue about much more fiercely than they do about pushrod versus modular V8s, because that split defines not just different engines but different eras of Mustang and truck performance ...

Motorcycle.com spotted the patent that was filed in February but only recently published shows definitively that Harley had a new pushrod engine in the works. According to the patent, the company is ...

In an overhead valve (OHV) engine, the valves are mounted in the cylinder head, above the combustion chamber. Usually this type of engine has the camshaft mounted in the cylinder block, and the valves ...

Rocker arms are an essential part of overhead valve engines. But how essential is it to keep track of whether they're made out of steel or aluminum?