The valve gear consists of the camshafts, rocker arms as well as the valves and springs.
The following features apply both to the M57 and M67:
Camshaft
• Chilled cast iron
• New inlet and exhaust camshafts
• Negative cam radius ≥ 67 mm
Rocker arm
• Roller-type rocker arm with one hydraulic valve lash per valve (common part with M47)
• Mounted on valve lash adjuster with oil supply
Valves and springs
• Common part with M47
• Inlet and exhaust valves identical
• Bottom valve plate with integrated valve stem seal
M57-specific features
• Vacuum pump driven by front of exhaust camshaft
M67-specific features
• Vacuum pump driven by front of inlet camshafts 1 – 4
Technical data:
