Crank Drive, Cylinder Block (X 20 Dtl, X 20 Dth)
Illustration
- Main bearing
- Con-rod bearing
- Guide bearing
- Crankshaft colour code
- Bearing shell colour code
- Bearing shell identification number
Crank Drive, Cylinder Block
| Engine | | X 20 DTL, X 20 DTH |
|---|
| Crankshaft dimensions | | � Main Bearing Journals | Colour code |
| | 1 � 5 | |
| Standard size | mm | 67.966 � 67.974 | green |
| mm | 67.974 � 67.982 | brown |
| Undersize (0.25) | mm | 67.716 � 67.724 | green / blue |
| mm | 67.724 � 67.732 | brown / blue |
| Undersize (0.50) | mm | 67.466 � 67.474 | green / violet |
| mm | 67.474 � 67.482 | brown / violet |
| | � Con-rod bearing journal | Colour code |
| | 1 � 4 | |
| Standard size | mm | 48.971 � 48.990 | � |
| Undersize (0.25) | mm | 48.721 � 48.740 | blue |
| Undersize (0.50) | mm | 48.471 � 48.490 | purple |
Crank Drive, Cylinder Block
| Engine | | X 20 DTL, X 20 DTH |
|---|
| Crankshaft dimensions | | Wide main bearing journals (guide bearing) | Colour code |
| Standard size | mm | 25.950 � 26.002 | � |
| Undersize (0.20) | mm | 26.150 � 26.202 | � |
| Undersize (0.40) | mm | 26.350 � 26.402 | � |
| Permissible crankshaft bearing clearance | mm | 0.016 � 0.069 | |
| Permissible crankshaft longitudinal play | mm | 0.01 � 0.02 | |
| Permissible lateral runout deviation | mm | 0.03 | |
Crank Drive, Cylinder Block
| Engine | | X 20 DTL, X 20 DTH |
|---|
| Crankshaft bearing | | Lower crankshaft bearing shell |
| 1, 2, 4, 5 | | Colour code | Thickness | Code |
| | | | GM 174 |
| Standard size | mm | brown | 1.989 � 1.995 | 919 N |
| mm | green | 1.995 � 2.001 | 920 N |
| Undersize (0.25) | mm | brown / blue | 2.114 � 2.120 | 921 A |
| mm | green / blue | 2.120 � 2.126 | 922 A |
| Undersize (0.50) | mm | brown / violet | 2.239 � 2.245 | 923 B |
| mm | green / violet | 2.245 � 2.251 | 924 B |
| | Upper crankshaft bearing shell |
| Standard size | mm | brown | 1.989 � 1.995 | 926 N |
| mm | green | 1.995 � 2.001 | 927 N |
| Undersize (0.25) | mm | brown / blue | 2.114 � 2.120 | 928 A |
| mm | green / blue | 2.120 � 2.126 | 929 A |
| Undersize (0.50) | mm | brown / violet | 2.239 � 2.245 | 930 B |
| mm | green / violet | 2.245 � 2.251 | 931 B |
See corresponding illustration.
Crank Drive, Cylinder Block
| Engine | | X 20 DTL, X 20 DTH |
|---|
| Crankshaft bearing | | Lower crankshaft bearing shell |
| 3 - guide bearing | | Colour code | Thickness | Code |
| | | | GM 174 |
| Standard size | mm | brown | 1.989 � 1.995 | 933 N |
| mm | green | 1.995 � 2.001 | 934 N |
| Undersize (0.25) | mm | brown / blue | 2.114 � 2.120 | 935 A |
| mm | green / blue | 2.120 � 2.126 | 936 A |
| Undersize (0.50) | mm | brown / violet | 2.239 � 2.245 | 937 B |
| mm | green / violet | 2.245 � 2.251 | 938 B |
| | Upper crankshaft bearing shell |
| Standard size | mm | brown | 1.989 � 1.995 | 947 N |
| mm | green | 1.995 � 2.001 | 948 N |
| Undersize (0.25) | mm | brown / blue | 2.114 � 2.120 | 949 A |
| mm | green / blue | 2.120 � 2.126 | 950 A |
| Undersize (0.50) | mm | brown / violet | 2.239 � 2.245 | 951 B |
| mm | green / violet | 2.245 � 2.251 | 952 B |
See corresponding illustration.
Crank Drive, Cylinder Block
| Engine | | X 20 DTL, X 20 DTH |
|---|
| 3 wide main bearing journals (guide bearing) | | Colour code | Thickness | Code |
| Standard size | mm | brown - green | 25.850 � 25.900 | � |
| Undersize (0.25) | mm | brown / blue green / blue | 26.050 � 26.100 | � |
| Undersize (0.50) | mm | brown / violet green / violet | 26.250 � 26.300 | � |
See corresponding illustration.
Crank Drive, Cylinder Block
| Engine | | X 20 DTL, X 20 DTH |
|---|
| Con-rod bearing | | Lower con-rod bearing shell |
| | Colour code | Thickness | Code |
| | | | GM 272 |
| Standard size | mm | � | 1.490 � 1.500 | 954 N |
| Undersize (0.25) | mm | blue | 1.615 � 1.625 | 955 A |
| Undersize (0.50) | mm | purple | 1.740 � 1.750 | 115 B |
See corresponding illustration.
Crank Drive, Cylinder Block
| Engine | | X 20 DTL |
|---|
| Con-rod bearing | | Upper con-rod bearing shell |
| | Colour code | Thickness | Code |
| | | | GM 42 |
| Standard size | mm | � | 1.490 � 1.500 | 957 N |
| Undersize (0.25) | mm | blue | 1.615 � 1.625 | 958 A |
| Undersize (0.50) | mm | purple | 1.740 � 1.750 | 116 B |
| Permissible con-rod bearing play | mm | 0.010 � 0.061 |
See corresponding illustration.
Crank Drive, Cylinder Block
| Engine | | X 20 DTH |
|---|
| Con-rod bearing | | Upper con-rod bearing shell |
| | Colour code | Thickness | Code |
| | | | GM 199 |
| Standard size | mm | green | 1.490 � 1.500 | 118 N |
| Undersize (0.25) | mm | blue / green | 1.615 � 1.625 | 119 A |
| Undersize (0.50) | mm | violet / green | 1.740 � 1.750 | 120 B |
| Permissible con-rod bearing play | mm | 0.010 � 0.061 |
See corresponding illustration.
Crank Drive, Cylinder Block
Illustration
- Index - identification of cylinder bore
- Cylinder bore
- Double bevelled ring with spiral-type expander
- Tapered compression ring
- Rectangular ring (or double trapezoidal ring)
- Piston diameter
Crank Drive, Cylinder Block
| Engine | | X 20 DTL | X 20 DTH |
|---|
| � Cylinder bore | | | |
| Standard size | | | |
| Coefficient 8 | mm | 83.975 � 83.985 | 83.975 � 83.985 |
| Coefficient 99 | mm | 83.985 � 83.995 | 83.985 � 83.995 |
| Coefficient 00 | mm | 83.995 � 84.005 | 83.995 � 84.005 |
| Coefficient 01 | mm | 84.005 � 84.015 | 84.005 � 84.015 |
| Coefficient 02 | mm | 84.015 � 84.025 | 84.015 � 84.025 |
| Oversize | | | |
| Index 8 + 0.5 | mm | 84.475 � 84.485 | 84.475 � 84.485 |
| � Piston | | | |
| Standard size | | | |
| Coefficient 8 | mm | 83.905 � 83.915 | 83.885 � 83.895 |
| Coefficient 99 | mm | 83.915 � 83.925 | 83.895 � 83.905 |
| Coefficient 00 | mm | 83.925 � 83.935 | 83.905 � 83.915 |
| Coefficient 01 | mm | 83.935 � 83.945 | 83.915 � 83.925 |
| Coefficient 02 | mm | 83.945 � 83.955 | 83.925 � 83.935 |
| Oversize | | | |
| Index 8 + 0.5 | mm | 84.405 � 84.415 | 84.385 � 84.395 |
| Piston installation play | mm | 0.06 � 0.08 | 0.08 � 0.10 |
See corresponding illustration.
Crank Drive, Cylinder Block
| Engine | | X 20 DTL, X 20 DTH |
|---|
| Piston projection | | Thickness of cylinder head gasket | Cylinder head gasket code |
| Dimension | | | |
| 0.40 - 0.50 mm | mm | 1.20 | � |
| 0.51 - 0.60 mm | mm | 1.30 | 1 notch |
| 0.61 - 0.70 mm | mm | 1.40 | 2 notches |
See corresponding illustration.
Crank Drive, Cylinder Block
| Engine | | X 20 DTL | X 20 DTH |
|---|
| Piston rings | | | |
| Rectangular compression ring | | | |
| Height | mm | 2.00 | � |
| Gap | mm | 0.30 � 0.50 | � |
| Vertical play | mm | 0.11 � 0.15 | � |
| Double trapezoidal ring | | | |
| Height | mm | � | 2.50 |
| Gap | mm | � | 0.30 � 0.50 |
| Vertical play | mm | � | 0.02 � 0.04 |
| Tapered compression ring | | | |
| Height | mm | 1.75 | 1.75 |
| Gap | mm | 0.30 � 0.50 | 0.30 � 0.50 |
| Vertical play | mm | 0.05 � 0.09 | 0.05 � 0.09 |
| Double bevelled ring with spiral-type expander | | | |
| Height | mm | 3.00 | 3.00 |
| Gap | mm | 0.40 � 1.40 | 0.40 � 1.40 |
| Vertical play | mm | 0.03 � 0.07 | 0.03 � 0.07 |
| Ring gap distribution | � | 120 | 120 |
See corresponding illustration.
Crank Drive, Cylinder Block
| Engine | | X 20 DTL, X 20 DTH |
|---|
| Piston pin | | |
| Length | mm | 68 |
| Diameter | mm | 29 |
| Bearing | | floating |
| Clearance | | |
| in piston | mm | � |
| in con-rod | mm | � |
See corresponding illustration.
