11 00 Engine in General M42 B18
| Cylinder | 4 | |
|---|---|---|
| Bore | Mm | 84 |
| Stroke | Mm | 81 |
| Effective displacement | Cm 3 | 1796 |
| Compression ratio | 1 | 10.0 |
| Power (without catalytic converter) | KW at RPM | |
| Power (with catalytic converter) | KW at RPM | 100/6000 |
| Max. top speed | RPM | 6500 |
| Max. constant speed | RPM | |
| Max. torque (without catalytic converter) | Nm RPM | |
| Max. torque (with catalytic converter) | Nm RPM | 172/4600 |
| Compression pressure (approx. equal value for all cylinders) | Min. bar | 10...11 |
TECHNICAL DATA SPECIFICATION (ENGINE GENERAL)
11 11 Crankcase M42 B 18
| Bore dia. a) | Mm | 84.00 + 0.014 |
|---|---|---|
| Intermediate bore dimension a) | Mm | 84.080 + 0.014 |
| 1) Grinding dimension a) | Mm | 84.250 + 0.014 |
| 2) Grinding dimension a) | Mm | 84.500 + 0.014 |
| Permitted roundness deviation of cylinder bore a) | Mm | 0.01 |
| Permitted conicity of cylinder bore a) | Mm | 0.01 |
| Permitted total wear clearance between piston and cylinder (engine run in) | Mm | 0.15 |
| A) New condition or rework | ||
TECHNICAL DATA SPECIFICATION (ENGINE BLOCK)
11 12 Cylinder head with cover M42 B 18
| Cylinder head height Standard | Mm | 140.0 |
|---|---|---|
| Machining limit | Mm | 139.55 |
| Valve guides are not available as replacement parts. | ||
| Valve guide inner Ø (installed) | ||
| Standard | Mm | 6.0 H7 |
| Size 1 | Mm | 6.1 H7 |
| Size 2 | Mm | 6.2 H7 |
| Tilt clearance (between valve and valve guide) | Mm | 0.5 |
TECHNICAL DATA SPECIFICATION (CYLINDER HEAD WITH COVER)
| Valve seat angle | ° | 45 |
|---|---|---|
| Correction angle outside | ° | 15 |
| Correction angle inside | ° | 60 |
| Valve seat width (dimension "B") | ||
| Intake | Mm | 1.65 ± 0.25 |
| Exhaust | Mm | 2.0 ± 0.25 |
| Ø valve seat | ||
| Intake, outer Ø | Mm | 32.4 |
| Exhaust, outer Ø | Mm | 30.1 |
TECHNICAL DATA SPECIFICATION (CYLINDER HEAD WITH COVER)
11 21 Crankshaft and Bearings M42 B 18
| Ground sizes of main bearing journals | ||
|---|---|---|
| Standard yellow | Mm | 59.984 ... 59.990 |
| Standard green | Mm | 59.977 ... 59.983 |
| Standard white | Mm | 59.971 ... 59.976 |
| Undersize 1 (U 0.25) yellow | Mm | 59.734 ... 59.740 |
| Undersize 1 (U 0.25) green | Mm | 59.727 ... 59.733 |
| Undersize 1 (U 0.25) white | Mm | 59.721 ... 59.726 |
| Undersize 2 (U 0.50) yellow | Mm | 59.484 ... 59.490 |
| Undersize 2 (U 0.50) green | Mm | 59.477 ... 59.483 |
| Undersize 2 (U 0.50) white | Mm | 59.471 ... 59.476 |
| Radial crankshaft bearing play | Mm | 0.020 ... 0.058 |
TECHNICAL DATA SPECIFICATION (CRANKSHAFT AND BEARINGS)
| Ground sizes of crankshaft thrust bearing | ||
|---|---|---|
| Standard | Mm | 25.0 F8 |
| Size 1 | Mm | 25.2 F8 |
| Size 2 | Mm | 25.4 F8 |
| Axial crankshaft play | Mm | 0.080 ... 0.163 |
| Ground sizes of conrod bearing journals | ||
| Standard | Mm | 45.00 +0.009 +0.025 |
| Size 1 | Mm | 44.75 +0.009 +0.025 |
| Size 2 | Mm | 44.50 +0.009 +0.025 |
| Radial conrod bearing play | Mm | 0.010 ... 0.052 |
| Max. allowed runout at center main journal Crankshaft supported on outer bearing pins | Mm | 0.15 |
TECHNICAL DATA SPECIFICATION (CRANKSHAFT AND BEARINGS)
11 22 Flywheel M42 B 18
| Max. axial run-out measured on outside diameter | Mm | 0.1 |
TECHNICAL DATA SPECIFICATION (FLYWHEEL)
11 24 Connecting Rods and Bearings M42 B 18
| Ø Large connecting rod eye (without bearing) | Mm | 48.000 ... 48.016 |
|---|---|---|
| Conrod bush bore diameter Ø | Mm | 22.005 +0.007 |
| Max. deviation in weight of connecting rods in one engine (without bearing shells) | G | ± 4 |
TECHNICAL DATA SPECIFICATION (CONNECTING RODS AND BEARINGS)
11 25 Pistons with Rings and Pins M42 B18
| Pistons and pins are matched - only replace together in pairs | ||
|---|---|---|
| Measuring point "A" (Large) | Mm | 9 |
| Piston diameter (measuring point "A") | ||
| Standard Size 0 | Mm | 83.985 |
| Size 00 | Mm | 84.065 |
| Oversize +1. | Mm | 84.235 |
| Oversize +2. | Mm | 84.485 |
| Piston running clearance | Mm | 0.01 ... 0.04 |
| Max. total wear clearance between piston and cylinder (engine operated) | Mm | 0.15 |
TECHNICAL DATA SPECIFICATION (PISTONS WITH RINGS AND PINS)
11 25 Pistons with rings and pins M42 B 18
| 1st groove | ||
|---|---|---|
| End clearance a) | Mm | 0.2 ... 1.0 |
| End float a) | Mm | 0.02 ... 0.20 |
| 2nd groove | ||
| End clearance a) | Mm | 0.2 ... 1.0 |
| End float a) | Mm | 0.02 ... 0.10 |
| 3rd groove (oil scraper ring with spring loaded oil ring) | X | |
| End clearance a) | Mm | 0.2 ... 1.0 |
| End float a) | Mm | 0.02 ... 0.10 |
| 3rd groove (three piece steel band ring) | ||
| End clearance of fins | Mm | |
| End float | Mm | |
| A) Upper value is wear limit | ||
TECHNICAL DATA SPECIFICATION (PISTONS WITH RINGS AND PINS)
11 31 Camshaft M42 B 18
| Pilot bearing (camshaft) width | Mm | 20 H9 |
|---|---|---|
| Pilot bearing (cylinder head) width | Mm | 20 d8 |
| Runout radial | Mm | 0.020 ... 0.061 |
| Axial running clearance | Mm | 0.065 ... 0.150 |
TECHNICAL DATA SPECIFICATION (CAMSHAFT)
11 34 Valves with Springs M42 B 18
| Plate Ø intake | Mm | 33.0 |
|---|---|---|
| Plate Ø exhaust | Mm | 30.5 |
| Shaft Ø intake | Mm | 6.0 -0.025 -0.040 |
| Shaft Ø exhaust | Mm | 6.0 -0.040 -0.055 |
| Repair valves: In addition to the standard valves, the following oversizes are also available | ||
| Shaft Ø intake stage 1 | Mm | 6.1 -0.025 -0.040 |
| Shaft Ø exhaust, stage 1 | Mm | 6.1 -0.040 -0.055 |
| Head dia. | Mm | 0.2 |
| Identification on stem | R1 | |
| Shaft Ø intake, stage 2 | Mm | 6.2 -0.025 -0.040 |
| Shaft Ø exhaust, stage 2 | Mm | 6.2 -0.040 -0.055 |
| Head dia. | Mm | 0.4 |
| Identification on stem | R2 |
TECHNICAL DATA SPECIFICATION (VALVES WITH SPRINGS)
11 40 Oil Supply M42 B 18
| Oil change volume with oil filter | Ltr. | 5.0 |
TECHNICAL DATA SPECIFICATION (OIL SUPPLY)
11 41 Oil Pump with Strainer and Drive M42 B 18
| Oil pressure at idle speed with engine at operating temperature. | Min bar | 0.5 |
|---|---|---|
| Regulated pressure | Bar | 4.3 ± 0.2 |
TECHNICAL DATA SPECIFICATION (OIL PUMP WITH STRAINER AND DRIVE)
11 52 Fan Clutch M42 B 18
| Fan clutch | ||
|---|---|---|
| Switch-on temperature | °C | 92 ± 4 |
| Switch-off temperature | °C | 60 |
| Tilt play of bearing (at Ø 156 mm) | Mm | ± 0.65 |
TECHNICAL DATA SPECIFICATION (FAN CLUTCH)
11 53 Thermostat and connections M42 B 18
| Opening temperature (stamped on housing) | °C | 92 |
TECHNICAL DATA SPECIFICATION (THERMOSTAT AND CONNECTIONS)