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N55 Engine
Valve Timing
N55 valve timing diagram
Note: The N55 has a larger intake and exhaust VANOS adjustment range
as well as larger intake valve lift, and cam duration than the N54 engine.
N54B30O0
N55B30M0
Intake valve Ø
[mm]
31.4
32
Exhaust valve Ø
[mm]
28
28
Maximum valve lift, intake
valve/exhaust valve
[mm]
9.7/9.7
9.9/9.7
Intake camshaft spread (VANOS
adjustment range)
[°crankshaft]
55
70
Exhaust camshaft spread (VANOS
adjustment range)
[°crankshaft]
45
55
Intake camshaft opening angle
(max.-min. spread)
[°crankshaft]
125 - 70
120 - 50
Exhaust camshaft opening angle
(max.-min. spread)
[°crankshaft]
130 - 85
115 - 60
Opening period intake camshaft
[°crankshaft]
245
255
Opening period exhaust camshaft
[°crankshaft]
261
261
Summary of Contents for N55
Page 29: ...29 N55 Engine N55 oil passages front view...
Page 35: ...35 N55 Engine N55 crankcase ventilation naturally aspirated mode...
Page 37: ...N55 crankcase ventilation turbocharged boost mode 37 N55 Engine...
Page 57: ...N55 Air Intake and Exhaust System 57 N55 Engine...
Page 83: ...83 N55 Engine Circuit Diagram N55 circuit diagram connection to vehicle electrical system...
Page 85: ...85 N55 Engine Engine Cooling Circuit Diagram N55 circuit diagram engine cooling...
Page 88: ...88 N55 Engine Digital Motor Electronics Circuit Diagram N55 MEVD17 2 Circuit Diagram...