FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Resonance/Turbulence Intake System




Resonance/Turbulence Intake System







The intake manifold of the M52 TU engine has been completely redesigned. Manufactured from molded plastic, it contains several new innovations and features.

Resonance Charging

The principle of resonance charging is carried over from the MS42.0 engine. The design of the manifold and the use of the resonance charging flap allow the manifold to operate with the dynamic effect of long intake runners at low to mid range RPM. Then when the resonance flap opens, during higher RPM, the dynamic effect is to have six short intake runners for greater air volume.

The overall effect is to achieve an optimum torque progression throughout the entire RPM range.

The resonance system consists of:
- The intake manifold
- Resonance manifold and tubes
- Main manifold with six ram tubes
- The resonance flap and controls
- Vacuum actuator and vacuum reservoir
- Turbulence manifold and idle control valve