Engine - Tightening Torques - e92/93 — BMW M3 E90 (2007-2013)

11 11 Engine block

		Type	Thread	Tightening specification	Measure
1AZ	New main bearing bolts (steel bolts 10.9)	S65	M11x115	Threads cleaned and oiled IMPORTANT: Observe tightening specification .
				1. Jointing torque	30 Nm
				2. Angle of rotation	130 °
				3. Release all main bearing bolts.
				4. Jointing torque	30 Nm
				5. Angle of rotation	130 °
				6. Release all main bearing bolts.
				7. Jointing torque	30 Nm
				8. Angle of rotation	130 °
1AZ	Old main bearing bolts (steel bolts 10.9)	S65	M11x115	Threads cleaned and oiled IMPORTANT: Observe tightening specification .
				1. Jointing torque	30 Nm
				2. Angle of rotation	130 °
2AZ	Fitting bolts (steel bolts 12.9)	S65	M9x97	Threads cleaned and oiled IMPORTANT: Observe tightening specification .
				Jointing torque	8 Nm
				Torque angle	130 °
3AZ	Main bearing bolts (steel bolts 10.9)	S65	M8x65	Threads cleaned and oiled
				Jointing torque	5 Nm
				Torque angle	90 °
4AZ	Main bearing bolts (steel bolts 10.9)	S65	M8x40	Threads cleaned and oiled
				Jointing torque	5 Nm
				Torque angle	60 °
5AZ	Main bearing bolts (steel bolts 10.9)	S65	M6x30	Threads cleaned and oiled
				Jointing torque	15 Nm
6AZ	Screw plug to crankcase, front	S65	M22x1.5	Replace seal	30 Nm
7AZ	Screw plug to crankcase, main oil gallery	S65	M16x1.5	Replace seal	30 Nm
8AZ	Coolant drain plug to crankcase	S65	M14x1.5	Replace seal	25 Nm
9AZ	Screw plug to crankcase, front	S65	M14x1.5	Replace seal	20 Nm

IMPORTANT
Observe tightening specification .

IMPORTANT
Observe tightening specification .

IMPORTANT
Observe tightening specification .

ENGINE BLOCK-TIGHTENING TORQUE SPECIFICATIONS

11 12 Cylinder Head with Cover

		Type	Thread	Measure
11AZ	Cylinder head cover	All	M6	10 Nm
		All	M7	15 Nm
		M21	M8	15 Nm
12AZ	Oil trap to cylinder head cover	M21	M8	17 Nm
13AZ	Timing case to cylinder head	All	M7	15 Nm
		All	M8	20 Nm
14AZ	Plug for oil channel (microencapsulated)	M47/M57	M12 x 1.5	20 Nm
15AZ	Vent plugs to cylinder head (coolant)	M67		2 Nm

CYLINDER HEAD WITH COVER-TIGHTENING TORQUE SPECIFICATIONS

		Type	Thread	Tightening specification	Measure
1AZ	Cylinder head bolts (steel bolt)	S65	M10x1.5x110	Replace screws Threads cleaned and oiled
				Jointing torque	40 Nm
				1st angle of rotation	90 °
				2. Angle of rotation	90 °
2AZ	Bearing cap to cylinder head	S65	M7x1	Replace screws Threads cleaned and oiled	15 Nm
3AZ	Screw plug for water jacket to cylinder head.	S65	M26x1.5	Replace seal Threads cleaned and oiled	50 Nm
4AZ	Screw plug, chain rail to cylinder head.	S65	M22x1.5	Threads cleaned and oiled	30 Nm
5AZ	Oil separator to cylinder head	S65	M6x16	Replace aluminium screws/bolts
				1. Jointing torque	4 Nm
				2. Angle of rotation	45 °
6AZ	Camshaft sensor to cylinder head cover	S65	M6x16	Replace aluminium screws/bolts
				1. Jointing torque	4 Nm
				2. Angle of rotation	45 °
7AZ	Lifting lug to cylinder head	S65	M8	Threads cleaned and oiled	15 Nm
8AZ	Decoupling adapter screw to cylinder head cover.	S65	M6		6 Nm
9AZ	Cover plate, preliminary filter, to cylinder head cover	S65		Self-tapping screw	7 Nm

CYLINDER HEAD WITH COVER-TIGHTENING TORQUE SPECIFICATIONS

13 71 Fixtures (S65)

		Type	Thread	Tightening specification	Measure
1AZ	Cover, air intake muffler	S65			3 Nm

FIXTURES (S65)-TIGHTENING TORQUE SPECIFICATIONS

13 41 Pressure sensors (S65)

		Type	Thread	Tightening specification	Measure
1AZ	Pressure sensor to idle air strip	S65	D5x12		3 Nm

PRESSURE SENSORS (S65)-TIGHTENING TORQUE SPECIFICATIONS

13 62 Sensors (S65)

		Type	Thread	Tightening specification	Measure
1AZ	Coolant temperature sensor	S65	M12x1.5		14 Nm
2AZ	Oil pressure switch	S65	M12x1.5		27 Nm
3AZ	Oil condition sensor	S65	M6	1. Initial tightening	2 Nm
				2. Final tightening	9 Nm
4AZ	Spacer, el. throttle valve actuator to crankcase	S65	M6	Microencapsulation	8 Nm
5AZ	Camshaft sensor to cylinder head cover	S65	M6x16 AL	1. Jointing torque	4 Nm
				2. Angle of rotation	45°

SENSORS (S65)-TIGHTENING TORQUE SPECIFICATIONS

13 54 Throttle valve actuation (S65)

		Type	Thread	Tightening specification	Measure
1AZ	Actuating lever to actuating shaft	S65	M5 10.9	Use screws and nuts only once	7 Nm

THROTTLE VALVE ACTUATION (S65)-TIGHTENING TORQUE SPECIFICATIONS

11 13 Oil Pan

		Type	Thread	Tightening specification	Measure
1AZ	Oil drain plug	S65	M12 x 1.5	Replace sealing ring	25 Nm
2AZ	Oil sump screws	S65	M6x 30 M6x50 M6x75		10 Nm

OIL PAN-TIGHTENING TORQUE SPECIFICATIONS

11 13 Oil sump

		Type	Thread	Tightening specification	Measure
1AZ	Oil drain plug	N57	M12 x 1.5	Replace sealing ring	25 Nm
2AZ	Oil sump to crankcase	N57	M8x 30 M8x110	Replace seal	25 Nm

OIL SUMP-TIGHTENING TORQUE SPECIFICATIONS

11 24 Connecting Rods and Bearings

		Type	Thread	Tightening specification	Measure
1AZ	Connecting rod bolts	S65	M9x1	Replace screws Screws washed and oiled
				1. Jointing torque	6 Nm
				2. Setting torque	20 Nm
				3. Angle of rotation	130 °
				Important 4. Release connecting rod bolts.
				5. Jointing torque	6 Nm
				6. Setting torque	20 Nm
				7. Angle of rotation	130 °
				Important 8. Release connecting rod bolts.
				9. Jointing torque	6 Nm
				10. Setting torque	20 Nm
				11. Angle of rotation	130 °

CONNECTING RODS AND BEARINGS-TIGHTENING TORQUE SPECIFICATIONS

11 21 Crankshaft and Bearings

		Type	Thread	Tightening specification	Measure
1AZ	Increment wheel on crankshaft	S54	M5 10.9	Replace screws
				Jointing torque	5.0 Nm
				Torque angle	45 °
	Increment wheel on crankshaft		M5 10.9	Replace screws	13 Nm
	Increment wheel on crankshaft		M5 8.8	Replace screws	5.5 Nm

CRANKSHAFT AND BEARINGS-TIGHTENING TORQUE SPECIFICATIONS

11 28 Drive belt

		Type	Thread	Tightening specification	Measure
1AZ	Idler pulley to oil filter housing, clockwise-rotating power steering pump	S65	M10x60		40 Nm
2AZ	Idler pulley to oil filter housing, counterclockwise-rotating power steering pump	S65	M10x100	Jointing torque	15 Nm
				Torque angle	70 °

DRIVE BELT-TIGHTENING TORQUE SPECIFICATIONS

11 22 Flywheel

		Type	Thread	Tightening specification	Measure
1AZ	DM flywheel to crankshaft (manual transmission)	S65	M12x1.5		105 Nm

FLYWHEEL-TIGHTENING TORQUE SPECIFICATIONS

11 23 Vibration Damper

		Type	Thread	Tightening specification	Measure
3AZ	Belt pulley/vibration damper to hub	S38/B36	M8 10.9		34 Nm
		N40/N42/N45/N46/S38/B38	M8 10.9		34 Nm
		All/others	M8		22 Nm
4AZ	Belt pulley to vibration damper	S38/B35	M8 8.8		22 Nm
		S50	M8 8.8		22 Nm
5AZ	Sprocket with hub or hub to crankshaft	M40	M16 x 1.5	Replace screw	310 Nm
		M42/M43/M43TU/M44	M16 x 1.5	Replace screw	330 Nm
6AZ	Hub to crankshaft	N40/N42/N45/N46	M16 x 1.5	Replace screw	300 Nm

VIBRATION DAMPER-TIGHTENING TORQUE SPECIFICATIONS

		Type	Thread	Tightening specification	Measure
1AZ	Torsion damper to crankshaft hub	S65	M12x1.25 12.9
				Jointing torque	60 Nm
				1st angle of rotation	40 °
				2. Angle of rotation	40 °

VIBRATION DAMPER-TIGHTENING TORQUE SPECIFICATIONS

		Type	Thread	Tightening specification	Measure
1AZ	New main bearing bolts (steel bolts 10.9)	S65	M11x115	Threads cleaned and oiled IMPORTANT: Observe tightening specification .
				1. Jointing torque	30 Nm
				2. Angle of rotation	130 °
				3. Release all main bearing bolts.
				4. Jointing torque	30 Nm
				5. Angle of rotation	130 °
				6. Release all main bearing bolts.
				7. Jointing torque	30 Nm
				8. Angle of rotation	130 °
1AZ	Old main bearing bolts (steel bolts 10.9)	S65	M11x115	Threads cleaned and oiled IMPORTANT: Observe tightening specification .
				1. Jointing torque	30 Nm
				2. Angle of rotation	130 °
2AZ	Fitting bolts (steel bolts 12.9)	S65	M9x97	Threads cleaned and oiled IMPORTANT: Observe tightening specification .
				Jointing torque	8 Nm
				Torque angle	130 °
3AZ	Main bearing bolts (steel bolts 10.9)	S65	M8x65	Threads cleaned and oiled
				Jointing torque	5 Nm
				Torque angle	90 °
4AZ	Main bearing bolts (steel bolts 10.9)	S65	M8x40	Threads cleaned and oiled
				Jointing torque	5 Nm
				Torque angle	60 °
5AZ	Main bearing bolts (steel bolts 10.9)	S65	M6x30	Threads cleaned and oiled
				Jointing torque	15 Nm
6AZ	Screw plug to crankcase, front	S65	M22x1.5	Replace seal	30 Nm
7AZ	Screw plug to crankcase, main oil gallery	S65	M16x1.5	Replace seal	30 Nm
8AZ	Coolant drain plug to crankcase	S65	M14x1.5	Replace seal	25 Nm
9AZ	Screw plug to crankcase, front	S65	M14x1.5	Replace seal	20 Nm

IMPORTANT
Observe tightening specification .

IMPORTANT
Observe tightening specification .

IMPORTANT
Observe tightening specification .

ENGINE BLOCK-TIGHTENING TORQUE SPECIFICATIONS

		Type	Thread	Tightening specification	Measure
1AZ	Connecting rod bolts	S65	M9x1	Replace screws Screws washed and oiled
				1. Jointing torque	6 Nm
				2. Setting torque	20 Nm
				3. Angle of rotation	130 °
				Important 4. Release connecting rod bolts.
				5. Jointing torque	6 Nm
				6. Setting torque	20 Nm
				7. Angle of rotation	130 °
				Important 8. Release connecting rod bolts.
				9. Jointing torque	6 Nm
				10. Setting torque	20 Nm
				11. Angle of rotation	130 °

CONNECTING RODS AND BEARINGS-TIGHTENING TORQUE SPECIFICATIONS

		Type	Thread	Tightening specification	Measure
1AZ	Idler pulley to oil filter housing, clockwise-rotating power steering pump	S65	M10x60		40 Nm
2AZ	Idler pulley to oil filter housing, counterclockwise-rotating power steering pump	S65	M10x100	Jointing torque	15 Nm
				Torque angle	70 °

DRIVE BELT-TIGHTENING TORQUE SPECIFICATIONS

11 31 Camshaft

		Type	Thread	Tightening specification	Measure
1AZ	Chain tensioner	S65	M26x1.5	Insert screws dry	65 Nm
2AZ	Bearing pin to crankcase and both cylinder heads (sliding rail)	S65	M8		20 Nm

CAMSHAFT-TIGHTENING TORQUE SPECIFICATIONS

11 36 Variable Camshaft Control

		Type	Thread	Tightening specification	Measure
1AZ	VANOS to inlet and exhaust camshafts Observe repair instruction .	S65	M12x1	Attention! Left-hand thread. Replace screws Screws oiled at threads and heads
				1. Jointing torque	20 Nm
				2. Setting torque	80 Nm
				3. Angle of rotation	200 °
				Important 4. Release screws.
				5. Jointing torque 10° before TDC.	10 Nm
				6. Jointing torque TDC.	20 Nm
				7. Setting torque	80 Nm
				8. Angle of rotation	200 °
2AZ	Non-return valve	S65	M14 x 1.5		15 Nm

VARIABLE CAMSHAFT CONTROL-TIGHTENING TORQUE SPECIFICATIONS

11 41 Oil Pump with Strainer and Drive

		Type	Thread	Tightening specification	Measure
1AZ	Sprocket to oil pump	S65	M10x1	Replace nut	25 Nm
2AZ	Oil pump to crankcase	S65	M8		22 Nm
3AZ	Oil return pump to crankcase	S65	M6		10 Nm

OIL PUMP WITH STRAINER AND DRIVE-TIGHTENING TORQUE SPECIFICATIONS

11 42 Oil Filter and Pipes

		Type	Thread	Measure
1AZ	Oil filter cap to oil filter housing	S65	Wrench size 24 mm	25 Nm
2AZ	Oil filter housing to engine block	S65	M6	10 Nm
3AZ	Oil filter housing to engine block	S65	M8	18 Nm

OIL FILTER AND PIPES-TIGHTENING TORQUE SPECIFICATIONS

11 65 Turbocharger and Control

		Type	Thread	Measure
1AZ	Exhaust turbocharger H.P. to exhaust manifold	N57S	M8x22	25 Nm
2AZ	Exhaust turbocharger L.P. to exhaust manifold	N57S	M10x25	40 Nm
3AZ	Compressor bypass to low-pressure stage	N57S	M8	8 Nm

TURBOCHARGER AND CONTROL-TIGHTENING TORQUE SPECIFICATIONS

11 52 Fan

		Type	Measure
1AZ	Fan clutch on water pump Coupling nut (left-hand threads)	All	40 Nm
		M54	45 Nm
2AZ	Fan to fan clutch	All	10 Nm

FAN-TIGHTENING TORQUE SPECIFICATIONS

11 53 Thermostat and Connections

		Type	Thread	Tightening specification	Measure
1AZ	Thermostat housing	All	M6		10 Nm
2AZ	Bleeder screw	All	M8		8 Nm

THERMOSTAT AND CONNECTIONS-TIGHTENING TORQUE SPECIFICATIONS

11 61 Air intake manifold

		Type	Thread	Tightening specification	Measure
1AZ	Manifold to throttle valves	S65	Hose clamp	Follow installation instructions	1 Nm
2AZ	Gaiter to manifold	S65	Hose clamp		3.0 Nm

AIR INTAKE MANIFOLD-TIGHTENING TORQUE SPECIFICATIONS

11 61 Intake manifold

		Type	Thread	Measure
1AZ	Intake manifold on cylinder head	All	M8	22 Nm
		All	M7	15 Nm
		All	M6	10 Nm
2AZ	Soundproofing hood to holder	M60/1/M60/2/M62	M6	8 Nm

INTAKE MANIFOLD-TIGHTENING TORQUE SPECIFICATIONS

11 62 Exhaust manifold

		Type	Thread	Tightening specification	Measure
1AZ	Exhaust manifold to cylinder head Coat screw connections with CRC copper paste	All	M6	Replace nuts	10 Nm
		M50/M52/M52TU/M54/M56/S52/S50 US	M7	Replace nuts	20 Nm
		All/others	M7	Replace nuts	15 Nm
		M10	M8	Upper row of staybolts installed with bolt cement
					23 Nm
		M21	M8		12 Nm
				Replace nuts Retighten after 2000 km Slacken nuts by a 1/4 turn
					12 Nm
		M41/M47/M47TU/M51/M57/M57TU	M8	Replace nuts	20 Nm
		All/others	M8	Replace nuts	23 Nm

EXHAUST MANIFOLD-TIGHTENING TORQUE SPECIFICATIONS

		Type	Thread	Measure
1AZ	Exhaust turbocharger H.P. to exhaust manifold	N57S	M8x22	25 Nm
2AZ	Exhaust turbocharger L.P. to exhaust manifold	N57S	M10x25	40 Nm
3AZ	Compressor bypass to low-pressure stage	N57S	M8	8 Nm

TURBOCHARGER AND CONTROL-TIGHTENING TORQUE SPECIFICATIONS

12 31 Alternator

		Type	Thread	Tightening specification	Measure
1AZ	B+ lead to alternator	S65	M8 cover nut		19 Nm

ALTERNATOR-TIGHTENING TORQUE SPECIFICATIONS

12 42 Electrical leads

		Type	Thread	Tightening specification	Measure
1AZ	Jump-start connection point B+	S65	M8		19 Nm
2AZ	Ground cable to engine carrier	S65	M8		19 Nm

ELECTRICAL LEADS-TIGHTENING TORQUE SPECIFICATIONS

12 12 Ignition

		Type	Thread	Tightening specification	Measure
1AZ	Spark plug in cylinder head	S65	M12x1.25	Dry thread, cold engine	23 Nm

IGNITION-TIGHTENING TORQUE SPECIFICATIONS

12 41 Starter

		Type	Thread	Tightening specification	Measure
1AZ	B+ lead to starter term. 30	S65	M8 nut		14 Nm
2AZ	Starter to transmission housing	S65	M10		42 Nm

STARTER-TIGHTENING TORQUE SPECIFICATIONS

11 78 Emissions control, control sensor/monitor sensor

		Type	Thread	Tightening specification	Measure
1AZ	Control sensor/monitor sensor	S65	M18 x 1.5		50 Nm
2AZ	Exhaust temperature sensor	S65	M14x1.5		25 Nm

EMISSIONS CONTROL, CONTROL SENSOR/MONITOR SENSOR-TIGHTENING TORQUE SPECIFICATIONS

11 78 Emissions-control, Lambda oxygen sensor

		Type	Thread	Tightening specification	Measure
1AZ	Oxygen control sensor; oxygen monitor sensor	All	M18 x 1.5		50 Nm

EMISSIONS-CONTROL, LAMBDA OXYGEN SENSOR-TIGHTENING TORQUE SPECIFICATIONS

Engine - Tightening Torques - e92/93 BMW M3 E90