N20 / N26 Combustion Chamber Upgrade Service

5150 AutoSport Combustion Chamber Upgrade Service for BMW N20 and N26 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 N20 and N26 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 N20 Applications:

1 Series

2011-2015     F20/F21     116i / 118i / 120i / 125i

2 Series

2014-2016     F22/F23     220i / 228i

3 Series

2012-2016     F30/F31     320i / 328i
2013-2016     F34     320i / 328i GT

4 Series

2013-2016     F32/F33     420i / 428i

5 Series

2011-2017     F10/F11     520i / 528i
2011-2017     F07     520i / 528i GT

X1 Series

2012-2017     E84     X1 sDrive20i / xDrive20i / xDrive28i

X3 Series

2012-2017     F25     X3 sDrive20i / xDrive20i / xDrive28i

X4 Series

2014-2016     F26     X4 xDrive20i / xDrive28i

X5 Series

2013-2014     F15     X5 xDrive25i / xDrive28i

Z Series

2011-2016     E89     Z4 sDrive20i / sDrive28i

BMW N26 Applications:

3 Series

2013-2016     F30/F31     320i / 328i / 328i xDrive
2014-2016     F34     328i / 328i xDrive GT

4 Series

2014-2016     F32/F33     428i / 428i xDrive
2014-2016     F36     428i / 428i xDrive Gran Coupe

5 Series

2012-2016     F10     528i / 528i xDrive

X1 Series

2013-2015     E84     X1 xDrive28i

X3 Series

2013-2017     F25     X3 xDrive28i