M30 Combustion Chamber Upgrade Service

5150 AutoSport Combustion Chamber Upgrade Service for BMW M30 Engines

Please note that price is based on customer providing core. If you need help sourcing a core, please contact our sales team.

Our CNC Cylinder Head Combustion Chamber Service is a precision machining process where the combustion chambers of an engine's cylinder head are reshaped and refined using Computer Numerical Control (CNC) technology, optimizing engine performance for street or track applications. Completed on our brand new, state-of-the-art Rottler 5-Axis CNC machines, this 5150 service is performed to optimize the flow characteristics of the combustion chambers, leading to improved engine performance.

CNC Combustion Chamber Re-Shaping Process:

1. 3D Scanning and Modeling: The existing combustion chamber is scanned to create a detailed 3D model. This allows 5150 engineers to analyze the current shape and identify areas for improvement.

2. Design Optimization: Our engineers then design an optimized combustion chamber profile, reshaping the chamber with a focus on improving airflow, fuel atomization, and combustion efficiency. 

3. CNC Machining: Using the 3D model and optimized design, our Rottler CNC machine precisely cuts and reshapes the combustion chambers to the desired specifications, then smooths all surfaces for optimal air flow. This process ensures consistent and repeatable results across all cylinders.

4. Final Inspection and Testing: After machining, the cylinder head is inspected to ensure that the modifications meet our exact tolerances. The modified head may also be flow-bench tested to quantify the improvements in airflow and combustion efficiency.

Performance Benefits of Combustion Chamber Re-Shaping:

1. Enhanced Airflow: By optimizing the shape of the combustion chamber, CNC machining improves the flow of air and fuel into and out of the chamber. This allows for efficient cylinder filling for increased power output.

2. Improved Combustion Efficiency: Smoother surfaces and optimized shaping reduce turbulence and promote better air and fuel mixing, leading to more complete and efficient combustion. This can result in more power, better fuel efficiency, and reduced emissions.

3. Consistency: CNC machining ensures that all combustion chambers are identical for balanced performance across all cylinders. This consistency is crucial for high-performance engines where even minor variations affect overall performance.

Benefits for BMW M30 Engines:

1. Power and Torque Gains: For these specialized BMW engines, particularly those used for high-performance applications, CNC combustion chamber reshaping offers increases in power and torque by improving the efficiency of the engine’s combustion process.

2. Enhanced Throttle Response: Optimized combustion chambers offer more immediate and sharper throttle response, improving the driving experience.

3. Compatibility with Other Modifications: CNC combustion chamber reshaping complements other performance upgrades, including high-performance camshafts, valvetrain upgrades, single-turbo conversions, or performance exhaust systems, by ensuring that the engine can fully utilize the benefits of these modifications.

BMW M30 Applications:

BMW New Six

1968-1977     E3     2500 / 2800
1974-1977     E3     2.8 Bavaria / 3.0 Bavaria
1971-1977     E3     3.0S / 3.0Si

BMW 3 Series

1980-1982     E21     323i

BMW 5 Series

1972-1981     E12     525 / 528 / 530i
1981-1988     E28     528i / 533i / 535i
1988-1993     E34     535i

BMW 6 Series

1976-1989     E24     630CS / 633CSi / 635CSi

BMW 7 Series

1977-1986     E23     728 / 728i / 730 / 730i / 733i / 735i
1986-1992     E32     730i / 735i / 735iL