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BMW 2002 Torque Specifications


steve k.

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It is imperative to use proper torque on all of the bolts on your car. For your convenience all the specs have been compiled technical manual and sorted as it would be in the BMW 2002 Service Repair Manual.  Data is provided in Newton meters (Nm), meter kilopond (mkp), and pound foot (lb.ft). 1 Nm = 0.102 mkp = 0.738 lb.ft

 

Please, use a high quality torque wrench to achieve good results.

It is imperative to use proper torque on all of the bolts on your car. For your convenience all the specs have been compiled technical manual and sorted as it would be in the BMW 2002 Service Repair Manual.  Data is provided in Newton meters (Nm), meter kilopond (mkp), and pound foot (lb.ft). 1 Nm = 0.102 mkp = 0.738 lb.ft

 

Please, use a high quality torque wrench to achieve good results.

 

Part 1 | Part 2 | Part 3

 

11 - Engine     Tightening Torques
      Nm mkp lb.ft
           
Engine (block) to gearbox (transmission) M8   25 - 27 2.5 - 2.7 18 - 19.5
  M10   47 - 51 4.7 - 5.1 34 - 37
Cylinder head bolts          
The following procedure should be followed on all repair work where torquing of the cylinder head bolts is required. Values presented are for M10 motors only. Torque   60 6.0 43
  Waiting time   15 minutes 15 minutes 15 minutes
  Torque angle   33° 33° 33°
  Valve clearance adjustment - - -
  Warm-up running: time to run engine to coolant temperature of 185°F to 205°F (85°C to 95°C) 25 minutes 25 minutes 25 minutes
  Torque angle   25° 25° 25°
Main bearing caps     58 - 63 5.8 - 6.3 42 - 46
Big end bolts 12.9 DIN 267     52 - 57 5.2 - 5.7 38 - 41
Flywheel to crankshaft     100 - 115 10.0 - 11.5 72 - 83
*Fit in with Loctite Type 270 and Activator N          
Timing chain tensioner end plug     30 - 40 3.0 - 4.0 22 - 29
Rocker clamp bolt     9 - 11 0.9 - 1.1 6.5 - 8
Presure relief valve plug on oil pump housing     25 - 30 2.5. - 3.0 18 - 22
Oil drain plug     60 - 65 6.0 - 6.5 43 - 47
Full-flow oil filter (throwaway element) with engine cold     24 - 26 2.4 - 2.6 17 - 19
Clutch to flywheel     22 - 24 2.2 - 2.4 16 - 17.4
Oil sump to engine block and timing case cover     9 - 11 0.9 - 1.1 6.5 - 8
Hollow screw for oil line to camshaft     11 - 13 1.1 - 1.3 8 - 9.4
V-belt pulley on cranshaft     140 - 150 14.0 - 15.0 101 - 108
Spark plugs     25 - 30 2.5 - 3.0 18 - 22
Fuel pump     10 - 14 1.0 - 1.4 7.2 - 10
Carburetor on intake manifold     10 - 14 1.0 - 1.4 7.2 - 10
Upper and lower timing cover bolts M6   9 - 11 0.9 - 1.1 6.5 - 8
  M8   23 - 27 2.3 - 2.7 16.6 - 19.5
Water pump to timing cover bolts M6   9 - 11 0.9 - 1.1 6.5 - 8
  M8   23 - 27 2.3 - 2.7 16.6 - 19.5
Upper to lower timing case cover     9 - 11 0.9 - 1.1 6.5 - 8
Distributor flange at cylinder head M6   9 - 11 0.9 - 1.1 6.5 - 8
  M8   23 - 27 2.3 - 2.7 16.6 - 19.5
Hex nut for exhaust manifold to cylinder head     30 - 33 3.0 - 3.3 22 - 24
Heat-sensitive valve     15 1.5 11
Eccentric at rocker     9 - 11 0.9 - 1.1 6.5 - 8
Heat-sensitive time switch     20 - 25 2.0 - 2.5 14.4 - 18
Oil pressure contact switch     30 - 35 3.0 - 3.5 22 - 25
Reversing light switch     6 - 10 0.6 - 1.0 4.3 - 7.2
 
13 - Fuel Supply     Tightening Torques
      Nm mkp lb.ft
Cap nut on fuel injection pump     25 2.5 18.1
Fastening nut for toothed belt sprocket on injection pump     30 - 40 3.0 - 4.0 21.7 - 28.9
Injectors     30 - 35 3.0 - 3.5 21.7 - 25. 3
Fuel injection pump oil filler plug     15 - 18 1.5 - 1.8 10.8 - 13.0
Head screw on injector     25 - 30 2.5 - 3.0 18.1 - 21.7
Carburettor to intake manifold     10 - 14 1.0 - 1.4 7.2 - 10.1
Fuel pump to cylinder head     10 - 14 1.0 - 1.4 7.2 - 10.1
Idle shutoff valve     2.5 - 3.0 0.25 - 0.30 1.8 - 2.2
 
17 - Radiator     Tightening Torques
      Nm mkp lb.ft
Radiator cap and drain plug     9 - 11 0.9 - 1.1 6.5 - 8.0
Hollow bolt for supply and return pipes at converter housing     40 - 45 4.0 - 4.5 28.9 - 32.5
Supply and return pipes at oil cooler     12 - 15 1.2 - 1.5 8.7 - 10.8
           
21 - Clutch     Tightening Torques
      Nm mkp lb.ft
Clutch to flywheel     22 + 2 2.2 + 0.2 15.9 + 1.4
Pipe and hose at master and slave cylinders     13 + 3 1.3 + 0.3 9.4 + 2.2
Master cylinder retaining bolts     22 + 2 2.2 + 0.2 15.9 + 1.4
Clutch pedal through-bolt     32 + 4 3.2 + 0.4 23 + 2.8
BMW 1600-2 mechanical clutch only)"}' style="padding:2px 3px 2px 3px; vertical-align:bottom"> Locknut for thrust rod / throwout arm (BMW 1600-2 mechanical clutch only)     17 + 3 1.7 + 0.3 12.3 + 2.2
Nut on ring bolt for tension spring/pedal     7 + 1.2 0.7 + 0.12 5.1 + 0.9

 

23 - Manual Gearbox (Transmission)
  Tightening Torques
      Nm mkp lb.ft
Gearbox to engine M8   25 - 27 2.5 - 2.7 18.1 - 19.5
  M10   47 - 51 4.7 - 5.1 34 - 37
Output flange     100 10 72.3
Sealing flange     10 1 7.2
Cap bearing on crossmember (rubber bushing) M8   22 - 24 2.2 - 2.4 16 - 17.4
  M10   43 - 48 4.3 - 4.8 31 - 34.7
Crossmember at body     22 - 24 2.2 - 2.4 16 - 17.4
Strut mounting at gearbox     22 - 24 2.2 - 2.4 16 - 17.4
Mounting on gearbox     20 - 25 2.0 - 2.5 14.5 - 18.1
Strut at selector arm     22 - 24 2.2 - 2.4 16 - 17.4
Housing cover     25 2.5 18.1
Rubber mount / crossmember     25 2.5 18.1
Bracket     25 2.5 18.1
Oil drain plug     60 6 43

 

Part 1 | Part 2 | Part 3


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Thank you for this. Very comprehensive.

Just one question: when torque values are given as x + y does this mean an absolute minimum of x and maximum of x+y?

Stating a normal +/- tolerance, I understand.

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rtheriaque wrote:

Carbs: They're necessary and barely controlled fuel leaks that sometimes match the air passing through them.

My build blog:http://www.bmw2002faq.com/blog/163-simeons-blog/

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Thank you for this. Very comprehensive. Just one question: when torque values are given as x + y does this mean an absolute minimum of x and maximum of x+y? Stating a normal +/- tolerance, I understand.

That is correct. X value is minimum and X+Y is Max value.

Usually, it is mean value with +/- tolerances. I cannot tell you why BMW didn’t choose +/- tolerance scheme

76 2002 Sienabraun

2015 BMW F10

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I'm looking for the alternator bolt torque (v-belt replacement / tensioning), but couldn't find any torque specification anywhere. May be worth adding if that's relevant ...

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I agree, those bolts would be good to add.  That said, another way to determine torque specs is by bolt size/hardness.

 

RealOEM shows that they're M8 8.8 bolts.

https://www.realoem.com/bmw/enUS/showparts?id=2215-USA-10-1975-114-BMW-2002&diagId=12_0930

 

Maximum torque for M8 8.8 bolts is 28.8 Nm, or 22.24 ft. lbs..

 

Looking through the bolt specs above, the suggested range for M8 bolts varies a bit at the low end, but the maximum torque used appears to be 27 Nm, or 19.5 ft. lbs. 

 

Based on that information, I'd torque them to ~19 ft. lbs.. 

 

Tom

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