BMW N73B60 - Technical Data

4
N73B60 Engine - Diagnosis
Technical Data
Technical Data Comparison N73B60 M73B54
V-angle configuration 12 cyl. V / 60º 12 cyl. V / 60º
Displacement (cm 3) 5972 5379
Bore / Stroke (mm) 89 / 80 79 / 85
Cylinder spacing (mm) 98 91
Crankshaft main bearing diam. (mm) 70 75
Conrod big end diam. (mm) 54 48
Power output (kW/HP)
at engine speed (rpm)
320 / 438
6000
240 / 326
5000
Torque (Nm)
at engine speed (rpm)
600
3950
490
3900
Idle speed (rpm)
Maximum engine speed (rpm)
550
6500
600
6500
Compression ratio 11.3 : 1 10 : 1
Valves per cylinder 4 2
Intake valve diam. (mm) 35 42
Exhaust valve diam. (mm) 29 36
Intake valve lift (mm) 0.3 - 9.85 10.3
Exhaust valve lift (mm) 9.7 10.3
Engine weight (kg) 280 -
Fuel requirement Premium unleaded Premium unleaded
Knock control Yes Yes
Injection pressure (bar) 50 - 120 3.5
Digital Motor Electronics (ECM) 2x MED 9.2.1 & Valvetronic ECU
with 2x HDEV ECU
2x ME 5.2 & EML IIIs
Emission compliance level LEV LEV
Firing order 1-7-5-11-3-9-6-12-2-8-4-10 1-7-5-11-3-9-6-12-2-8-4-10
Fuel consumption savings compared
with M73
12 % -
Maxmimum regulated vehicle speed
(km/h / mph)
250 / 155 250 / 155