A flagrant case of misaligned ports indicated by the carbon formations. During the course of building, modifying or merely "sharpening up" an overhead valve V8 engine, the question of intake port ...

SAE Transactions, Vol. 103, Section 4: JOURNAL OF FUELS & LUBRICANTS (1994), pp. 853-868 (16 pages) The paper presents a computer simulation of flow and heat transfer phenomena in the intake port of a ...

Most modern vehicles have multi-port fuel injection (MFI) with a separate fuel injector for each cylinder. This system mixes the fuel and air together right in the intake port for eachengine cylinder ...

Good cylinder heads are necessary to the production of serious horsepower, but what exactly constitutes a "good" cylinder head? Typically, we identify them with big, impressive flow numbers.

If you flip through the list of features on just about any new car or truck, you’re likely to see the words “direct fuel injection,” or DI. The concept is straightforward enough -- engineers have ...

The question of the day seems to involve the difference between the original cathedral-port and modern rectangular-port LS heads. More specifically, which one is better? Were we to compare two sets of ...

Half of the U.S. new-car and truck fleet now is equipped with gasoline direct injection (also known as GDI)—which means the fuel is sprayed straight into the combustion chamber. This begs the question ...