It might seem that the intake manifold is one of the simplest components on an engine. After all, the purpose of the intake is to provide a series of passages to join the carburetor with the intake ...

Car geeks are always looking for a good DIY project for the weekend, and most of us will do just about anything to free up additional ponies. Case inpoint: Gasket-match-porting your manifold is one of ...

Much has been written about port-matching stock cylinder head intake ports to the intake manifold, but for those on a budget, a simple port-match delivers little, if any, improvement. Particularly ...

Without question, cylinder-head porting is a science. The act of removing metal from the intake and exhaust ports to increase airflow has been used for decades, and in most cases, a skilled head ...

Cylinder head porting is one of those garage mods that lives somewhere between speed-shop legend and flow-bench science. Also referred to as port and polish, the idea is simple: Open up the intake and ...

Wall-wetting due to liquid fuel film motion and fuel droplet impingement on combustion chamber walls is a major source of unbumed hydrocarbons (UBHC), and is a concern for oil dilution in PFI engines.