CYLINDER HEAD PORTING BEFORE AND AFTER ON HD HOOLIGAN EXHAUST PORT
Every application requires a specific port design to match the goals of the end user. Twin Cam and Milwaukee 8 cylinder head ports are totally different and require specific cylinder head porting to achieve the maximum efficiency. Below are several cylinder head ports from Harley Twin Cam 107 upgrades and CVO 110 to 113 upgrades. As you can see, exceptional detail and design is implemented to each area of the port.
TWIN CAM 107 INTAKE PORTING FROM START TO FINISH
AMAZING LOOKING CVO 110 CYLINDER HEAD PORTING WITH STOCK GUIDES
MILWAUKEE 8 CYLINDER HEAD PORTING AND NEW OVERSIZED VALVES INSTALLED
SERDI TOUCH UP VALVE JOB ON 107 TWIN CAM PORTED CYLINDER HEAD
Cylinder head porting refers to the process of modifying the intake and exhaust ports to improve the air flow. Cylinder heads, as cast by the manufacturer, are usually suboptimal due to design and manufacturing constraints. Porting of the heads provides the finely detailed attention required to bring the engine to the highest level of efficiency. More than any single factor, the cylinder head porting process is responsible for the high power output of modern engines.
The cylinder head porting process can be applied to a standard factory production engine in the same manner it is applied to a racing engine. While the level of porting will vary for each application, the results will be the same. Porting of the cylinder heads will enhance the power output of each engine for daily use or a particular racing application.
Understanding of these air flow characteristics is critical to cylinder head porting. Daily human experience with air gives the impression that air is light and nearly non-existent as we move slowly through it. This is not the same exposure an engine running at high speed experiences with air flow. It senses a totally different substance. In the context of an internal combustion engine, air can be thought of as thick, sticky, elastic and even heavy. Pumping air becomes a major problem for engines running at speed. This is why cylinder head porting is so critical to enhancing the performance of any engine.
In addition to porting cylinder heads for Harley Davidson engines, DC V-Twin can help you with that special project. Just look below for other applications we can help you with.