Mercedes OM447 Manuals, Engine Specifications & Bolt Torques

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OM447 Mercedes
Main Bearing Bolts

12pt bolts
Step 1 = 300-330 Nm Step 2 = +90-100 degrees

Hex bolts
80-90 Nm + 90-100 degrees

OM447 Mercedes
Connecting Rod Bolts

Step 1 = 100 Nm
Step 2 + 90-100 degrees

OM447 Mercedes
Cylinder Head Bolts

Step 1 = 10 Nm
Step 2 = 50 Nm
Step 3 = 100 Nm
Step 4 = 140 Nm
Step 5 = 180-190 Nm
Final Step + 90-100 degrees

Mercedes Designations
German - English

A = Turbocharger = T
L = Intercooler = I
OM = Diesel engine = ADE

Example
OM366 = ADE366N
OM366A = ADE366T
OM366LA = ADE366TI
OM442LA = ADE442TI

Mercedes OM447
Displacement, Compression Ratio,
Weight

Displacement
11.97 liter, 730 CID

Compression ratio
447N 16.5:1
447C 16.5:1
447T 16.5:1
447TI 16.5:1

Weight
approx
447N 815 kg, 1793 lb

OM447 Mercedes
Arrangement

447N - OM447
6 Cylinder In-Line
4-stroke cycle
Naturally aspirated

447C
6 Cylinder In-Line
4-stroke cycle
Compensated

447T - OM447A
6 Cylinder In-Line
4-stroke cycle
Turbocharged

447TI - OM447LA
6 Cylinder In-Line
4-stroke cycle
turbocharged
intercooled

OM447 Mercedes
Power and Torque

Power
447N
235 hp, 168 kW @ 2200 rpm

447C
241 hp, 180 kW @ 2200 rpm

447T
298 hp, 213 kW @ 2100 rpm

447TI
355 hp, 265 kW @ 2100 rpm

Torque
447N
629 lb.ft, 842 Nm @ 1300 rpm

447C
664 lb.ft, 900 Nm @ 1300 rpm

447T
937 lb.ft, 1270 Nm @ 1000-1600 rpm

447TI
1123 lb.ft, 1523 Nm @ 1000-1600 rpm