Technical data (Mercedes-Benz C-Class W201)

Contents: Cylinder head ↡ Valves* ↡ Valve springs* ↡ Cylinder block ↡ Pistons ↡ Piston rings * ↡ Crankshaft ↡ Connecting rod bearing cap bolts ↡ Tightening torques for connections ↡

Cylinder head

Maximum gasket distortion:

4-cylinder engines:

Longitudinal - 0.15 mm
Transverse - 0.05 mm

All engines except 4-cylinder petrol:

Longitudinal - 0.08 mm
Cross - 0 mm

Minimum height after grinding:

4-cylinder petrol engines - 97.8 mm
6-cylinder petrol engines* - 89.5 mm
Diesel engines - 142.4 mm

Combustion chamber protrusion (diesel engines) — 7.6 to 8.1 mm

Maximum valve drop below cylinder head sealing surface (wear limit):

4-cylinder petrol engines:

1.8 and 2.0 liter engines:

Inlet - 2.3mm
Outlet - 0.9 mm

2.3 liter engines:

Inlet - 1.7 mm
Outlet - 0.9 mm

6-cylinder petrol engines:

Inlet - 1.7 mm
Outlet - 1.5 mm

Diesel engines (intake and exhaust valves) — 0.7 mm

*Note: The total thickness of metal removed from the cylinder head or from the mating surface of the cylinder block must not exceed 0.5 mm.

Valves*

Valve Plate Diameter:

4-cylinder petrol engines:

Intake:

2.0 liter engines - 42.90 to 43.10 mm
2.3 liter engines - 45.90 to 46.19 mm

Graduation - 38.90 to 39.10 mm

6-cylinder petrol engines:

Intake - 40.0 mm
Graduation - 35.0 mm

Diesel engines:

Intake - 37.90 to 38.10 mm
Graduation - 34.90 to 35.10 mm

Valve stem diameter:

Petrol engines:

Intake - 7.955 to 7.970 mm
Graduation - 8.938 to 8.960 mm

Diesel engines:

Intake - 7.955 to 7.970 mm
Graduation - 8.938 to 8.960 mm

*Note: At the time of writing, data for 1.8 liter engines was not available.

Valve springs*

Length in free state:

4-cylinder petrol engines - 49.0 mm
6-cylinder petrol engines - not published by manufacturer

Diesel engines:

Springs with yellow/green or purple/green markings - 50.8 mm
Springs with yellow/blue or purple/blue markings - 50.0 mm

*Note: At the time of writing, data for 1.8 liter engines was not available.

Cylinder block

Cylinder diameter:

4-cylinder petrol engine:

1.8 and 2.0 liter engines:

Standard 0 - 88.998 to 89.008 mm
Standard 1 - 89.009 to 89.018 mm
Standard 2 - 89.019 to 89.028 mm
Standard A - 89.000 to 89.006 mm
Standard X - 89.007 to 89.012 mm
Standard B - 89.013 to 89.018 mm
Repair size +0.5 - Values are higher by +0.500 mm
Repair size +1.0 - Values are higher by +1.000 mm

2.3 liter engines:

Standard 0 - 95.498 to 95.508 mm
Standard 1 - 95.509 to 95.518 mm
Standard 2 - 95.519 to 95.528 mm
Standard A - 95.500 to 95.506 mm
Standard X - 95.507 to 95.512 mm
Standard B-95.51 W to 95.518 mm
Repair size +0.5 - Values are higher by +0.500 mm
Repair size +1.0 - Values are higher by +1.000 mm

6-cylinder petrol engines:

Standard 0 - 82.898 to 82.900 mm
Standard 1 - 82.908 to 82.918 mm
Standard 2 - 82.918 to 82.928 mm
Standard A - 82.900 to 82.906 mm
Standard X - 82.906 to 82.912 mm
Standard B - 82.912 to 82.918 mm
Repair size +0.5 - Values are higher by +0.500 mm
Repair size +1.0 - Values are higher by +1.000 mm

Diesel engines:

Standard A - 87,000 to 87,006 mm
Standard X - 87.006 to 87.012 mm
Standard B - 87.012 to 87.018 mm
Repair size +0.7 mm - Values are higher by +0.700 mm

Maximum cylinder bore ovality:

Gasoline engines - 0.05 mm
Diesel engines - 0.07 mm

Maximum taper of cylinder bore:

Gasoline engines - 0.05 mm
Diesel engines - 0.07 mm

Maximum cylinder block height:

4-cylinder engines - 292.35 mm
6-cylinder engines - 281.95 mm
Diesel engines - 299.62 mm

Maximum curvature of the gasket surface:

4-cylinder petrol engines - At the time of writing the manual, information was not available

6-cylinder petrol engines:

Longitudinal - 0.100 mm
Transverse - 0.05 mm

Diesel engines - 0.03 mm

Pistons

Piston diameter:

4-cylinder petrol engines:

1.8 and 2.0 liter engines:

Standard 0 - 88.968 to 89.982 mm
Standard 1 - 88.978 to 88.992 mm
Standard 2 - 86.988 to 89.002 mm
Standard A - 88.973 to 88.979 mm
Standard X - 88.978 to 88.986 mm
Standard B - 88.985 to 88.991 mm
Repair size +0.5 - Values are higher by +0.500 mm
Repair size +1.0 - Values are higher by +1.000 mm

2.3 liter engines:

Standard 0 - 95.469 to 95.481 mm
Standard 1 - 95.479 to 95.491 mm
Standard 2 - 95.489 to 95.501 mm
Standard A - 95.473 to 95.479 mm
Standard X - 95.478 to 95.486 mm
Standard B - 95.485 to 95.491 mm
Repair size +0.5 - Values are higher by +0.500 mm
Repair size +1.0 - Values are higher by +1.000 mm

6-cylinder petrol engines:

Standard 0 - 82.868 to 82.882 mm
Standard 1 - 82.878 to 82.892 mm
Standard 2 - 82.888 to 82.902 mm
Standard A - 82.873 to 82.879 mm
Standard X - 82.878 to 82.886 mm
Standard B - 82.885 to 82.891 mm
Repair size +0.5 - Values are higher by +0.500 mm
Repair size +1.0 - Values are higher by +1.000 mm

Diesel engines:

Standard A - 86.970 to 86.976 mm
Standard X - 86.975 to 86.983 mm
Standard B - 86.982 to 86.988
Repair size +0.7 mm - Values are higher by +0.700 mm

Piston protrusion value (diesel engines):

Minimum - 0.735 mm
Maximum - 0.965 mm

Piston rings *

Clearance in locks:

4-cylinder petrol engines:

Upper compression ring - 0.30 to 1.00 mm
Second compression ring - 0.25 to 0.80 mm
Oil scraper ring - 0.25 to 0.80 mm

6-cylinder petrol engines:

Upper compression ring - 0.015 to 0.050 mm
Second compression ring - 0.020 to 0.040 mm
Oil scraper ring - 0.01 to 0.045 mm

Diesel engines:

Upper compression ring - 0.090 to 0.20 mm
Second compression ring - 0.050 to 0.15 mm
Oil scraper ring - 0.030 to 0.10 mm

*Note: At the time of writing, information was not available for 1.8 liter engines.

Crankshaft

Free axial travel:

4-cylinder petrol engines - 0.300 mm
6-cylinder petrol engines - 0.100 to 0.240 mm
Diesel engines - 0.300 mm

Thickness of thrust half rings (for all engines) - 2.15, 2.20, 2.25, 2.35 and 2.40 mm

Main journal diameters:

4-cylinder petrol engines:

Standard code blue - 57.960 to 57.965 mm
Standard code yellow - 57.955 to 57.960 mm
Standard code red - 57.950 to 57.955 mm
Standard 1 code blue - 57.945 to 57.950 mm
Standard 1 code yellow - 57.940 to 57.945 mm
Standard 1 code red - 57.935 to 57.940 mm
Repair 1 - 57.705 to 57.715 mm
Repair 2 - 57.455 to 57.465 mm
Repair 3 - 57.205 to 57.215 mm
Repair 4 - 56.955 to 56.965 mm

6-cylinder petrol engines: - At the time of writing, information was not available

Diesel engines:

Standard - 57.959 to 57.965 mm
Repair 1 - 57.700 to 57.715 mm
Repair 2 - 57.450 to 57.465 mm
Repair 3 - 57.200 to 57.215 mm
Repair 4 - 56.959 to 56.965 mm

Working clearance in main bearings - 0.025 to 0.070 mm

Connecting rod journal diameters:

4-cylinder engines:

Standard - 47.955 to 47.965 mm
Repair 1 - 47.705 to 47.715 mm
Repair 2 - 47.455 to 47.465 mm
Repair 3 - 47.205 to 47.215 mm
Repair 4 - 46.955 to 46.965 mm

6-cylinder engines - Information was not available at the time of writing

Diesel engines:

Standard - 47.950 to 47.965 mm
Repair 1 - 47.700 to 47.715 mm
Repair 2 - 47.450 to 47.465 mm
Repair 3 - 47.200 to 47.215 mm
Repair 4 - 46.950 to 46.965 mm

Working clearance in connecting rod bearings - 0.030 to 0.070 mm

Radial travel of the crankshaft in bearings

4-cylinder petrol engines - 0.070 mm
6-cylinder petrol engines - 0.030 to 0.050 mm
Diesel engines - 0.080 mm

Radial travel of connecting rod bearings on the crankshaft.

4-cylinder petrol engines - 0.070 mm
6-cylinder petrol engines - 0.030 to 0.060 mm
Diesel engines - 0.080 mm

Connecting rod bearing cap bolts

Minimum diameter 2.0- and 2.3-liter petrol engines (see paragraph 16) — 8 mm

Maximum length - all except 2.0- and 2.3-litre petrol engines (see paragraph 16) — 52.9 mm