Does Cylinder Head Porting Contribute to Better Performance on a Trubo Charged
Engine?
Which will fill a 5 gallon container the fastest with fuel?
A: One inch pipe at a pressure of 15 PSI,
with a 1/2" restrictor at the outlet.
or B: One inch pipe at a pressure of 15 PSI,
with a 3/4" restrictor at the outlet.
If your answer is “A “you should not be giving nor have an opinion on porting
cylinder heads on turbo charged engines.
If your answer is “B “then you will understand that all turbo charged engine will benefit
drastically if cylinder head porting is done correctly.
Cylinder Head Porting is the art form of modifying the intake and exhaust ports of an internal
combustion engine to improve the quality and quantity of the gas flow. Cylinder heads as
manufactured are not optimal due to design and manufacturing constraints. Porting the heads
provides the finely detailed attention required to bring the engine to the highest level of
efficiency by an increase in volumetric efficiency. More than any other single factor porting
technology is responsible for the high power output of modern engines.
This process can be applied to a racing engine to optimize its power output as well as to a
production engine to enhance its power output for daily use or to alter its power output
characteristics to suit a particular application or to turn it into a racing engine.
Daily human experience with air gives the impression that air is light and nearly non-existent as
we move slowly through it. An engine running at high speed experiences a totally different
substance. In that context, air can be thought of as thick, sticky, elastic, gooey and heavy.
Pumping it is a major problem for engines running at speed. Porting helps engines deal with this
problem.
More boost equates to more induction heat and induction heat can equate to a multitude of
problems.