Cylinder head
The maximum allowable distortion of the surface under the gasket is 0.05 mm
New cylinder head height:
- 4-cylinder engine M43TU - 141.00 mm
- 4-cylinder engine N42 - 143.30 mm
- 6-cylinder engine - 140.00 mm
Minimum allowable head height (after processing)
- 4-cylinder engine M43TU - 140.55 mm
- 4-cylinder engine N42 - 143.00 mm
- 6-cylinder engine - 139.70 mm
Valves
Plate diameter:
4-cylinder M43TU engine:
- Inlet - 41.40 mm
- Graduation - 35.60 mm
4-cylinder N42 engine:
- Inlet - 31.50 mm
- Graduation - 28.40 mm
6-cylinder engine:
Engine M54 2.2 l
- Inlet - 30.00 mm
- Graduation - 27.00 mm
Other engines:
- Inlet - 33.00 mm
- Graduation - 30.50 mm
Maximum play of valve stems in guides (when measured on the valve disc, the end of the stem is flush with the guide) — 0.50 mm
Cylinder block
Cylinder diameter (denomination):
- M54TU engine - 85.00 mm
- N42 engine - 84.00 mm
- M52 TU engine - 84.00 mm
M54 engines:
- Volume 2.2 l - 80.00 mm
- Other models - 84.00 mm
The maximum allowable ovality of the cylinder is 0.010 mm
The maximum allowable taper of the cylinder is 0.010 mm
Pistons
Piston diameters:
4-cylinder engine M43TU:
- Nominal size - 84.985 mm
- Repair dimensions - nominal + 0.25 mm and + 0.50 mm
4-cylinder N42 engine:
- Nominal size - 83.996 mm
- Repair size - nominal + 0.25 mm
6-cylinder engine M52 TU:
- Nominal size - 83.980 mm
- Repair size - nominal + 0.25 mm
6-cylinder engine M54:
Volume 2.2 l:
- Nominal size - 79.980 mm
- Repair size - nominal + 0.25 mm
Other engines:
- Nominal size - 83.995 mm
- Repair size - nominal + 0.25 mm
Working clearance between piston and cylinder - 0.010-0.047 mm
The maximum allowable clearance between the piston and the cylinder is 0.150 mm
Connecting rods
The maximum difference in the masses of the connecting rods is 4000 g
Crankshaft
Axial play - 0.080-0.163 mm
Diameter of main journals:
4-cylinder engine M43TU:
- Nominal size - 59 971-59.990 mm
- Repair dimensions - nominal - 0.25 mm and - 0.50 mm
4-cylinder N42 engine:
- Nominal size - 64.986-65.000 mm
- Repair dimensions - nominal - 0.25 mm and - 0.50 mm
6-cylinder engines:
- Nominal size - 59.971-59.990 mm
- Repair dimensions - nominal - 0.25 mm and - 0.50 mm
Crankpin diameter:
4-cylinder M43TU engine and 6-cylinder engine with variable valve timing:
- Nominal size - 44.50-45.00 mm
- Repair dimensions - nominal - 0.25 mm and - 0.50 mm
4-cylinder N42 engine:
- Nominal size - 49.50-50.00 mm
- Repair dimensions - nominal - 0.25 mm and - 0.50 mm
6-cylinder engines:
- Nominal size - 44.50-45.00 mm
- Repair dimensions - nominal - 0.25 mm and - 0.50 mm
Maximum radial runout in the middle main bearing - 0.15 mm
Operating clearance in main bearings:
- 4-cylinder engines - 0.020-0.046 mm
- 6-cylinder engines - 0.020-0.058 mm
Operating clearance in connecting rod bearings:
- 4-cylinder engine M43TU - 0.010-0.052 mm
- 4-cylinder engine N42 - 0.028-0.070 mm
- 6-cylinder engines - 0.020-0.055 mm
Piston rings
Lock gaps:
4-cylinder M43TU engine:
- Top compression ring - 0.20-1.0 mm
- Second compression ring - 0.20-1.0 mm
- Oil scraper ring - no information
4-cylinder N42 engine:
- Top compression ring - 0.10-0.30 mm
- Second compression ring - 0.20-0.40 mm
- Oil scraper ring - 0.40-1.40 mm
6-cylinder M52TU engine:
- Top compression ring - 0.10-0.30 mm
- Second compression ring - 0.20-0.40 mm
- Oil scraper ring - 0.25-0.50 mm
6-cylinder engine M54:
Volume 2.2 l:
- Top compression ring - 0.10-0.30 mm
- Second compression ring - 0.20-0.40 mm
- Oil scraper ring - 0.25-0.50 mm
Other engines:
- Top compression ring - 0.20-0.40 mm
- Second compression ring - 0.20-0.40 mm
- Oil scraper ring - 0.20-0.45 mm
Connection tightening torques
- 4-spindle motors - See Technical data for chapter 2A
- 6-cylinder engines - See Technical data for chapter 2B