Identification
"a": legislation type
"b": identification marking
"c": production serial number
Data
| engine code | DW8B |
|---|---|
| legislation type | WJZ |
| number of cylinders | 4 |
| capacity (cc) | 1868 |
| bore x stroke (mm) | 82,2 x 88 |
| compression ratio | 23/1 |
| max. power (E.E.C.) | 51 kW |
| max. power (DIN) | 70 hp |
| corresponding engine speed | 4600 rpm |
| max. torque (E.E.C.) | 10,5 daNm |
| corresponding engine speed | 2500 rpm |
| emission control standards | L4 |
| fuel | diesel |
| catalytic converter | yes |
| injection system | mechanical injection pump |
| constructor's badge | DELPHI DIESEL SYSTEM |
| type of injection | DCN2 |
| EGR valve | yes |
Cylinder head
The cylinder head can be identified by the presence of holes in the bosses located below the diesel injectors
Cylinder head gasket
Laminated metallic cylinder head gaskets to seal the cylinder block (6 classes of thickness)
A - engine code: 2 holes = DW8B
B - thickness identification mark
| piston protrusion | thickness | number of notches at B |
|---|---|---|
| 0,51 to 0,55 mm | 1,26 mm | 1 (1) |
| 0,56 to 0,59 mm | 1,30 mm | 2 (1 and 2) |
| 0,60 to 0,63 mm | 1,34 mm | 3 (1, 2 and 3) |
| 0,64 to 0,67 mm | 1,38 mm | 4 (1, 2, 3 and 4) |
| 0,68 to 0,71 mm | 1,42 mm | 5 (1, 2, 3, 4 and 5) |
| 0,72 to 0,75 mm | 1,46 mm | 2 (1 and 5) |
Timing gear
Camshaft
"d": short camshaft with or without paint mark
Valve timing chart
Measurement with a theoretical valve play of 0,8 mm (timing check)
| before top dead centre (BTDC) | 4° |
|---|---|
| after bottom dead centre (ABDC) | 35° |
| before bottom dead centre (BBDC) | 43° |
| after top dead centre (ATDC) | 0° |
The valve clearance cold is obtained by shims of different thicknesses placed between the tappet and the valve stem
- Inlet valve 0,15 mm
- Exhaust valve 0,30 mm
Cylinder head tightening
WarningProceed bolt by bolt in the order shown
Tightening procedure
- Pre-tighten to 2 ± 0,2 daNm (order from 1 to 10)
- Tightening torque to 6 ± 0,6 da.Nm (order from 1 to 10)
- Angular tightening to 180° ± 5° (order from 1 to 10)
Engine flywheel identification
"e": engine speed and TDC sensor (2 recessed targets)
Place a ruler to mark the line passing through the centres of the flywheel and the centring hole "f"
Target "e" should be to the right of the line
Ø A = 203 mm (clutch disc contact face)
Engine tightening torques
Reciprocating gear
| designation | tightening torque |
|---|---|
| bearing cap fixing screws | 7 ± 0,7 daNm |
| big end nuts | pre-tighten to 2 m.daN, then carry out an angular tightening of 70 ± 5 ° |
| auxiliary equipment drive pulley hub | pre-tighten to 4 m.daN, then carry out an angular tightening of 55 ± 5 ° |
| accessories drive pulley | 1 ± 0,1 daNm |
Cylinder block
| designation | tightening torque |
|---|---|
| underside of piston jet | 1 ± 0,1 daNm |
| lower cover | 1,6 ± 0,2 daNm |
| timing belt roller bearing | 4,3 ± 0,4 daNm |
| timing belt tensioner roller | 2,1 ± 0,2 daNm |
Cylinder head
| designation | tightening torque |
|---|---|
| camshaft bearings covers | 2 ± 0,2 daNm |
| exhaust manifold | 3 ± 0,3 daNm |
| cylinder head cover | 0,5 ± 0,1 daNm |
| hub camshaft | 4,3 ± 0,4 daNm |
| camshaft pinion hub | 2,3 ± 0,2 daNm |
Engine flywheel - clutch
| designation | tightening torque |
|---|---|
| engine flywheel | 4,8 ± 0,5 daNm |
| clutch mechanism | 2 ± 0,2 daNm |
Lubrication system
| designation | tightening torque |
|---|---|
| oil pump | 2,3 ± 0,2 daNm |
| coolant/oil heat exchanger | 7 ± 0,7 daNm |
Injection system
| designation | tightening torque |
|---|---|
| injector on the cylinder head | 9 ± 0,9 daNm |
| diesel fuel heater | 1,5 ± 0,1 daNm |
| injection pump | 2 ± 0,2 daNm |
| injector union | 2,5 ± 0,2 daNm |
| the injection pump pulley | 2,3 ± 0,2 daNm |
Cooling system
| designation | tightening torque |
|---|---|
| coolant pump | 1,5 ± 0,2 daNm |
| water inlet housing | 1,8 ± 0,2 daNm |