11 00 Engine in general B40
| Cylinder | 8 | |
|---|---|---|
| Bore | Mm | 87 |
| Stroke | Mm | 84.1 |
| Effective displacement | Cm 3 | 4000 |
| Compression ratio | 1 | 10.5 |
| Max. permissible engine speed | Rpm | 6500 |
| Permissible constant speed | Rpm | 6500 |
ENGINE IN GENERAL SPECIFICATION B40
11 00 Engine in general B48
| Cylinder | 8 | |
|---|---|---|
| Bore | Mm | 93 |
| Stroke | Mm | 88.3 |
| Effective displacement | Cm 3 | 4799 |
| Compression ratio | 1 | 10.5 |
| Max. permissible engine speed | Rpm | 6500 +/-50 |
| Permissible constant speed | Rpm | 6500 |
ENGINE IN GENERAL SPECIFICATION B48
11 11 Engine Block, Cylinder Crankcase
| Bore diameter stage 0 a) | Mm | 87.000 +0.014 |
|---|---|---|
| Bore diameter stage 1 a) | Mm | 87.250 +0.014 |
| Bore diameter stage 2 a) | Mm | 87.500 +0.014 |
| Permitted out-of-round of cylinder bore a) | Mm | 0.007 |
| Permitted conicity of cylinder bore a) | Mm | 0.01 |
| Permissible total wear tolerance between piston and cylinder (engine operated) | Mm | 0.10 |
ENGINE BLOCK, CYLINDER CRANKCASE B40 SPECIFICATION
- new status or recondition
| Bore diameter stage 0 a) | Mm | 93.000 +0.014 |
|---|---|---|
| Bore diameter stage 1 a) | Mm | 93.250 +0.014 |
| Bore diameter stage 2 a) | Mm | 93.500 +0.014 |
| Permitted out-of-round of cylinder bore a) | Mm | 0.007 |
| Permitted conicity of cylinder bore a) | Mm | 0.01 |
| Permissible total wear tolerance between piston and cylinder (engine operated) | Mm | 0.10 |
ENGINE BLOCK, CYLINDER CRANKCASE B48 SPECIFICATION
- new status or recondition
11 12 Cylinder Head with Cover
| Cylinder head height: Original dimension | Mm | 133.0 +/- 0.07 |
|---|---|---|
| Machining limit | Mm | 132.7 +/- 0.07 |
| Valve guides are not available as replacement parts. | ||
| Inside diameter of installed valve guide | ||
| Standard | Mm | 6.0 H7 |
| Tilt clearance, maximum (wear between valve and valve guide) | Mm | 0.5 |
| Bearing of camshaft | ||
| Guide bearing (width) | Mm | 14.035-13.993 |
CYLINDER HEAD WITH COVER N62TU SPECIFICATION
11 12 Cylinder Head with Valve Seat Cover B40
| Valve seat angle | ° | 45 |
|---|---|---|
| Correction angle: outer | ° | 15 |
| Correction angle: inner | ° | 60 |
| Valve seat width: Inlet | Mm | 1.25+/-0.25 |
| Valve seat width: Exhaust | Mm | 1.65+/-0.25 |
CYLINDER HEAD WITH VALVE SEAT COVER N62TU B40 SPECIFICATION
11 12 Cylinder Head with Valve Seat Cover B48
| Valve seat angle | ° | 45 |
|---|---|---|
| Correction angle: outer | ° | 15 |
| Correction angle: inner | ° | 60 |
| Valve seat width: Inlet | Mm | 1.25+/-0.25 |
| Valve seat width: Exhaust | Mm | 1.65+/-0.25 |
CYLINDER HEAD WITH VALVE SEAT COVER B48 SPECIFICATION
11 21 Crankshaft and Bearings N62TU
| Ground sizes of main bearing journals | Bearing point 1 | |
|---|---|---|
| Standard yellow | Mm | 69.974 +0.006 |
| Standard green | Mm | 69.967 +0.006 |
| Original violet | Mm | 69.961 +0.005 |
| Undersize 1 (U 0.25) yellow | Mm | 69.724 +0.006 |
| Undersize 1 (U 0.25) green | Mm | 69.717 +0.006 |
| Stage 1 (U 0.25) violet | Mm | 69.711 +0.005 |
| Undersize 2 (U 0.50) yellow | Mm | 69.474 +0.006 |
| Undersize 2 (U 0.50) green | Mm | 69.467 +0.006 |
| Stage 2 (U 0.50) violet | Mm | 69.461 +0.005 |
| Crankshaft bearing clearance, radial | Mm | 0.024-0.052 |
| Maximum permitted runout on central crankshaft journal (crankshaft supported at bearing journals 1 and 5). | Mm | 0.15 |
CRANKSHAFT AND BEARINGS N62TU SPECIFICATION
| Ground sizes of main bearing journals | Bearing points 2 to 7 | |
|---|---|---|
| Standard yellow | Mm | 69.984 +0.006 |
| Standard green | Mm | 69.977 +0.006 |
| Original violet | Mm | 69.971 +0.005 |
| Undersize 1 (U 0.25) yellow | Mm | 69.734 +0.006 |
| Undersize 1 (U 0.25) green | Mm | 69.727 +0.006 |
| Stage 1 (U 0.25) violet | Mm | 69.721 +0.005 |
| Undersize 2 (U 0.50) yellow | Mm | 69.484 +0.006 |
| Undersize 2 (U 0.50) green | Mm | 69.477 +0.006 |
| Stage 2 (U 0.50) violet | Mm | 69.471 +0.005 |
| Crankshaft bearing clearance, radial | Mm | 0.024-0.052 |
| Maximum permitted runout on central crankshaft journal (crankshaft supported at bearing journals 1 and 5). | Mm | 0.15 |
CRANKSHAFT AND BEARINGS N62TU SPECIFICATION
11 21 Inspecting
| Grinding stages, crankshaft guide bearing | ||
|---|---|---|
| Standard | Mm | 28.0 F8 |
| Size 1 | Mm | 28.2 F8 |
| Size 2 | Mm | 28.4 F8 |
| Crankshaft axial play | Mm | 0.080-0.246 |
CRANKSHAFT AND BEARINGS N62TU SPECIFICATION
| Ground sizes of conrod bearing journals | ||
|---|---|---|
| Standard | Mm | 54.00 -0.009 -0.025 |
| Size 1 | Mm | 53.75 -0.009 -0.025 |
| Size 2 | Mm | 53.50 -0.009 -0.025 |
| Radial conrod bearing play | Mm | 0.028-0.070 |
CRANKSHAFT AND BEARINGS N62TU SPECIFICATION
11 23 Vibration Damper N62TU
| Max. permitted radial runout (drive levels) | Mm | 0.25 |
|---|---|---|
| Max. permitted axial runout (drive levels) | Mm | 0.25 |
VIBRATION DAMPER N62TU SPECIFICATION
11 24 Connecting Rods and Bearings N62TU
| Large connecting rod eye bore diameter (without bearing shells) | Mm | 57.600 +0.016 |
|---|---|---|
| Conrod bushing: Inside diameter | Mm | 21 +0.014 +0.006 |
| Permissible total deviation of connecting rods in one engine (without bearing shells) | G | +/-4 |
CONNECTING RODS AND BEARINGS N62TU SPECIFICATION
11 25 Pistons with Rings and Pins N62TU
| 1st groove | ||
|---|---|---|
| Height | Mm | 1.2 -0.010 -0.030 |
| End clearance | Mm | 0.1-0.3 |
| Axial play | Mm | 0.020-0.070 |
| 2nd groove | ||
| Height | Mm | 1.5 -0.010 -0.030 |
| End clearance | Mm | 0.20-0.40 |
| Axial play | Mm | 0.020-0.060 |
| 3rd groove | ||
| Height | Mm | Cannot be measured |
| End clearance | Mm | 0.2-0.9 |
| Axial play | Mm | Cannot be measured |
PISTONS WITH RINGS AND PINS N62TU SPECIFICATION
11 25 Pistons with Rings and Pins N62TU B40
| Piston and pin are paired to each other - replace together only. | ||
|---|---|---|
| Measuring point "A" (position) | Mm | 11 |
| Piston diameter at measuring point "A" | ||
| Original, stage 0 (new dimension) | Mm | 86.985 +/- 0.014 |
| Oversize, stage 1 (new dimension) | Mm | 86.235 +/- 0.014 |
| Oversize, stage 2 (new dimension) | Mm | 86.485 +/- 0.014 |
| Piston installation clearance (piston new) | Mm | 0.001-0.044 |
| Piston installation clearance (piston worn) | Mm | 0.026-0.073 |
| Permissible total wear tolerance between piston and cylinder (engine operated) | Mm | 0.10 |
PISTONS WITH RINGS AND PINS B40 SPECIFICATION
| Piston and pin are paired to each other - replace together only. | ||
|---|---|---|
| Measuring point "A" (position) | Mm | 18 |
| Piston diameter at measuring point "A" | ||
| Original, stage 0 (new dimension) | Mm | 93.986 +/- 0.016 |
| Oversize, stage 1 (new dimension) | Mm | 93.236 +/- 0.016 |
| Oversize, stage 2 (new dimension) | Mm | 933.486 +/- 0.016 |
| Piston installation clearance (piston new) | Mm | 0.001-0.044 |
| Piston installation clearance (piston worn) | Mm | 0.026-0.073 |
| Permissible total wear tolerance between piston and cylinder (engine operated) | Mm | 0.10 |
PISTONS WITH RINGS AND PINS N62TU B48 SPECIFICATION
11 31 Camshaft N62TU
| Guide bearing (width) | Mm | 14.100 +0.043 |
|---|---|---|
| Radial runout | Mm | 0.040-0.082 |
| Axial play | Mm | 0.065-0.150 |
CAMSHAFT N62TU SPECIFICATION
11 34 Valves with Springs N62TU
| Plate dia. | ||
|---|---|---|
| Inlet | Mm | 35.0 |
| Exhaust | Mm | 29.0 |
| Stem bore diameter | ||
| Inlet | Mm | 6.0 -0.025 -0.040 |
| Exhaust | Mm | 6.0 -0.033 -0.047 |
VALVES WITH SPRINGS N62TU B40 SPECIFICATION
11 34 Valves with Springs N62TU B44
| Plate dia. | ||
|---|---|---|
| Inlet | Mm | 35.0 |
| Exhaust | Mm | 29.0 |
| Stem bore diameter | ||
| Inlet | Mm | 6.0 -0.025 -0.040 |
| Exhaust | Mm | 6.0 -0.033 -0.047 |
VALVES WITH SPRINGS N62TU B48 SPECIFICATION
11 37 Variable valve gear N62TU
| Axial clearance of eccentric shaft | Mm | 0.100-0.200 |
VARIABLE VALVE GEAR N62TU SPECIFICATION
11 40 Oil Supply N62TU
| Oil grades and consumption: refer to BMW SERVICE OPERATING FLUIDS . | ||
|---|---|---|
| Oil change volume with oil filter | Ltr. | 8.0 |
OIL SUPPLY SPECIFICATION
11 41 Oil Pump with Strainer and Drive N62TU
| Oil pressure at idle speed with engine at operating temperature | Min bar | 1.0 |
|---|---|---|
| Control pressure with engine at operating temperature | Bar | 4.0-6.0 |
OIL PUMP WITH STRAINER AND DRIVE N62TU SPECIFICATION