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Cylinder head assembly CNC
Cylinder head assembly CNC
Cylinder head assembly CNC
Cylinder head assembly CNC
Cylinder head assembly CNC
Cylinder head assembly CNC
Cylinder head assembly CNC
  1. Cylinder head assembly CNC
  2. Cylinder head assembly CNC
  3. Cylinder head assembly CNC
  4. Cylinder head assembly CNC
  5. Cylinder head assembly CNC
  6. Cylinder head assembly CNC
  7. Cylinder head assembly CNC

The EA888 Gen3 cylinder head assembly is used in the Volkswagen Tiguan MK2 CHH and Audi A4 Quattro CNC CYM.

The CNC machining of the EA888 cylinder head (third/fourth generation) typically focuses on the fifth stage of intake port polishing to optimize airflow, increasing intake volume to approximately 164 CFM and exhaust volume to approximately 186 CFM. Key parameters include five-axis CNC machining of the intake/exhaust ports, combustion chamber reshaping, and upgrades to +1.0mm intake valve seats and +2.0mm exhaust valve seats.

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Description

Intake Manifold Optimization: Stage 5 CNC machining significantly increases intake volume, from approximately 142 CFM to approximately 164 CFM, and exhaust volume from 149-158 CFM to 181-186 CFM.

Valve Seat Upgrade: CNC machining for high-performance applications typically involves replacing original valve seats with AMPCO 45 material to accommodate a 1.0 mm increase in intake valve size and a 2.0 mm increase in exhaust valve size.

Combustion Chamber: The combustion chamber is reshaped to optimize airflow and compression ratio, particularly suitable for the fourth-generation EA888 engine.

Materials: The cylinder head is made of high-quality aluminum alloy, offering excellent heat dissipation.

Modification: CNC machining often requires or includes the removal of the intake manifold baffle and optimization of the four-port cylinder head design.

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