5150 AutoSport 5-Axis CNC Cylinder Head Porting for BMW M30 Engines Please note that price is based on customer providing disassembled, clean core. If you need help sourcing a core, please contact our sales team. Also note that this service includes a 1-2 week turnaround time for service completion, beginning when the 5150 Team receives your head. Investing in cylinder head porting for your high-performance BMW engine enhances airflow efficiency for improved engine power, throttle response, and overall performance. By optimizing the intake and exhaust passages, porting reduces restrictions, allowing the engine to breathe better and generate more horsepower and torque. We only use CNC equipment, ensuring that each port is machined to the exact same specifications, providing uniformity across all cylinders. This precision is crucial for maintaining consistent performance and efficiency. Service Overview: Multi-Angle CNC Porting Porting involves modifying the intake and exhaust ports of the cylinder head to improve the flow of air and fuel into the combustion chamber and the expulsion of exhaust gases out of the chamber. The first step of this process involves assessing the cylinder head's current flow characteristics to identify any restrictions or turbulence. Then, material is carefully removed from the walls of the intake and exhaust ports to simultaneously enlarge them and improve their shape for optimal flow. The result is a smoother, more direct path for air and fuel into the combustion chamber, as well as a smooth, more efficient path for exhaust to flow out of the combustion chamber. Because we use CNC machining, we can ensure each port is exact and even across the cylinder head. This means airflow is balanced across all cylinders. Benefits of porting include increased airflow for more power and improved throttle response. BMW M30 Applications: BMW New Six 1968-1977 E3 2500 / 28001974-1977 E3 2.8 Bavaria / 3.0 Bavaria1971-1977 E3 3.0S / 3.0Si BMW 3 Series 1980-1982 E21 323i BMW 5 Series 1972-1981 E12 525 / 528 / 530i1981-1988 E28 528i / 533i / 535i1988-1993 E34 535i BMW 6 Series 1976-1989 E24 630CS / 633CSi / 635CSi BMW 7 Series 1977-1986 E23 728 / 728i / 730 / 730i / 733i / 735i1986-1992 E32 730i / 735i / 735iL
