Most modern multi-valve engines have a peak volumetric efficiency of around 80 percent; which leaves plenty of room for improvement. All things equal, bringing the VE up by 10 percent should yield an ...

Hot-rodders share a common denominator, irrespective of brand loyalty: get from A to B as fast and as inexpensively as possible. Within the scope of the engine, that means focusing primarily on the ...

A cylinder head, especially an aluminum one, seldom fails on its own. Typically, there's another matter to contend with. Undoubtedly, the most frequent cause of cylinder-head cracking is an overheated ...

Cylinder head porting is an advanced area of car tuning, so to help you get around what it all means, we take a closer look at the sure-fire way to improve an engine’s performance potential. You may ...