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Home >> BMW >> 2000 >> 323Ci 2D Convertible, Automatic >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Mechanical >> Engine Mechanical - Overview >> Engines >> M52TU B25 And B28 Engines >> Idle Control Valve and Turbulence Bores

Idle Control Valve and Turbulence Bores

The intake manifold incorporates six separate (internal) turbulence bores that channel the idle and low engine speed air directly into the cylinder head. The turbulence bores mate up to matching 5.5mm bores in the cylinder head.

Fig 1: Identifying Air Flow Through Cylinder Head
G03395945Courtesy of BMW OF NORTH AMERICA, INC.
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