We know that a better flowing cylinder head will improve an engine’s power potential, and we’re familiar with the terms porting, gas-flowing, and big-valve head but what do they actually mean. How do they work? And why do they give the power gains they do?

To answer these questions and get an insight into the world of head tuning we take a closer look at the world of cylinder heads…

 

Read the full feature in the May 2019 issue…