The cylinder head represents the upper limit of the combustion chamber. It accommodates the necessary valve timing elements (valves, injectors, camshafts).
The following features apply both to the M57 and M67:
• Cast aluminium, cast timing case
• Coolant flow from exhaust to inlet side
• Central, vertical upright arrangement of common rail fuel injector
• 4-valve arrangement (as on M47)
• Exhaust ports combined in cylinder head (as on M47)
• Cylinder head bolts not accessible with camshafts mounted in position
• Glow plugs (heater plugs) arranged on inlet side
• Leak-proof arrangement of oil galleries/holes (e.g. for hydraulic valve lash adjusters)
M57-specific features
• Coolant outlet arranged in centre between cylinders 3 and 4
• Inlet port configuration (1 swirl/1 tangential port) adapted to common rail injection system
M67-specific features
• Inlet port configuration (1 swirl/1 tangential port), twin-port arrangement
Technical data:
