For an engine to work, a fresh mixture of air and gas has to be able to enter and exit the cylinders. These induction and exhaust processes also need to occur at the correct moments, otherwise the ...

Ferrari was so proud of its five-valve cylinder heads, it changed a naming convention that ran back over 25 years. For its previous mid-engine two-seaters, the three-digit name was derived from ...

Virtually all current production-based cylinder heads incorporate a cross-flow design with intake ports (Photo B) located on one side of the head and exhaust ports (Photo C) on the opposite side. Some ...

Now that we've explored the majority of simple, bolt-on parts for the S197 Mustang, the next logical place to turn our collective attention is to the inner working of the engine. And, no matter how ...

Ask any engine builder where he would concentrate his efforts if he could only modify one component in an engine, and most would say the cylinder heads. Even the sleepiest street engine can see power ...

While looking around on modified.com recently, I noticed a post on the site's forum asking what cylinder head porting and polishing is. The person who posted it apologized for asking what he felt was ...