[m3 hal]

Post E46 M3 torque spec's and I'll add them here.

Engine
Oil drain plug: 18 ft-lbs
Oil filter housing cap bolt: 24 ft-lbs
Banjo bolt (side of valve cover): 18 ft-lbs (25 Nm)
Spark Plugs: 16 ft-lbs (22 Nm)
Cam Bolts: 10.3 ft-lbs (14 Nm )
Chain Tensioner bolt: 32mm 51.6 ft-lb (70nm)
Cylinder head bolts: E14 22.1 ft-lb (30nm)/90 degrees/90 degrees (see explanation in thread)
Engine mounts: 37 ft-lbs (49 Nm)
VANOS filter bolt: 20 ft-lbs
Oil pan bolts - 8.8 grade - 89 in-lbs (10 Nm)
10.9 grade - 106 in-lbs (12 Nm)
Tensioner: 18 ft. lbs. (24 Nm)
Idler Pulley: 33 ft. lbs (45 Nm)
Harmonic balancer M12x110 bolts: 44 ft-lbs (60 Nm) then 50 degrees and 50 degrees
Plastic ///M cover over valve cover: 89 in-lbs (10 Nm)

Front Suspension/Brakes
brake caliper mounting bracket to spindle: 81 ft-lbs (110 Nm)
brake caliper guide pins: 22 ft-lbs (30 Nm)
strut tower nuts: 25-26 ft-lbs (35 Nm)
strut bar nuts: 18 ft-lbs (24Nm)
lower strut slip-fit to kingpin/clamshell bolt: 60 ft-lbs (81 Nm)
control arm ball joint: 66 ft-lbs (90 Nm)
control arm at steering knuckle: (65 Nm)
control arm bushing bracket: 44 ft-lbs (60 Nm)
tierods:
aluminum subframe brace/underplate: 43.5 ft-lbs plus 45-90 degree turn

Rear Suspension/Differential
rear trailing arm bracket to car body: 57 ft-lbs (77 Nm)
rear trailing arm/rtab bushing thru bolt: 81 ft-lbs (if using stock rtab, tighten bushing bolt with trailing arm at proper angle to avoid bushing preload)
rear shock mount upper bolts: 21 ft-lbs
rear shock lower bolt: 74 ft-lbs (100 Nm) in loaded position
rear lower control arm to trailing arm bolt: 81 ft-lbs (110 Nm)
rear v-brace: 44 ft-lbs (59 Nm) + 90 degrees
front subframe bolts: 81 ft-lbs (110 Nm)
rear subframe bolts: 57 ft-lbs (77 Nm)
1 front diff mount bolt: 148 ft-lbs (200 Nm)
2 rear diff mount bolts: 15 ft-lbs (20 Nm) + 90 degrees
Differential drain and fill plugs:
- with o-ring - 44 ft-lbs (60 Nm)
- with sealing washer - 48 ft-lbs (65 Nm)
- type not specified - 52 ft-lbs (70 Nm)

Transmission and Driveshaft
guibo to transmission/driveshaft: M12 - 85 ft-lbs (115 Nm)
center support bearing to body: 15 ft-lbs (20 Nm)
driveshaft to differential flange: 52 ft-lbs (70 Nm)


Transmission mounting
Class 8.8:
2ea. M12x50 (12 & 1 o'clock positions looking fwd) - 65 ft-lbs
2ea. M12x90 (4 & 9 o'clock positions looking fwd) - 65 ft-lbs
3ea. M8x50 (5, 6 & 8 o'clock positions looking fwd) - 22 ft-lbs
2ea. M10x65 (starter bolts) - 40 ft-lbs
1ea. M6 Hex for shield (3 o'clock position looking fwd) - 'Goodntight' 7ft-lbs


Exhaust
Flange bolts from Section 2 to your muffler: 11ft-lbs (15Nm)
Muffler hanger to muffler: 15ft-lbs (20Nm)
Muffler hanger to chassis: 16ft-lbs (22Nm)


Miscellaneous
wheel bolts: 88 ft-lbs (120 Nm)
steering coupler ET10 bolts: 16 ft-lbs (22 Nm)
steering wheel locking nut: 46 ft-lbs (63 Nm)

Cylinder head torque procedure:
1. Torque cylinder head bolts to 30 N-m in the following order:


2. Torque each bolt 90 degrees in the same order.

3. Torque each bolt 90 degrees one final time in the same order.

=======================================
multiply ft-lbs by 1.356 to get N-m

multiply N-m by 0.738 to get ft-lbs

[Flow]

*** removed ***

[Flow]

Hey everyone !

In addition to the torque spec thread that is stickied in this section, I thought I would do a little PDF files with the actual drawings and torque values.
Easy to read, print, and have in the garage.
Describing torques with this is a lot easier than writing the name of the actual part and torque value.

Here you go for the download : DOWNLOAD (updated 2017/3/3)

Please do not hesitate to comment for anything that could correct / make the file better !

Stay up to date !
Simple give me your email address using this link : http://goo.gl/forms/P19InSMaob
and I will send you update warnings about the file

-----------------------------------------------------

Change log

2016 April 8
- Corrected drive shaft center bolt (connecting both parts) torque : 97 Nm with loctite
- Corrected differential subframe front bolt tightening torque (90 Nm for the stud / 77 Nm for the nut)
- Better display of transmission / guibo / propshaft connecting bolts torques
- Corrected front reinforcement plate angle torque (90° +/- 30° and not 90°+30°)
- Corrected front strut brace nuts torque (24 Nm instead of 40 Nm)
- Corrected front top strut housing torque

2016 April 10
- Added information for main bearing screws
- Added information for cylinder head screws
- Added torque for sealer plug for rocker arm shaft
- Added torque for 11111736005 bolt
- Corrected header -> cylinder head bolt (15 Nm M7 as per TIS)
- Corrected spark plug torque (23 ±3 Nm as per TIS instead of 25 Nm)
- Corrected value for knock sensor to engine block torque
- Corrected torque value for cranshaft pulse generator (9 Nm instead of 5 Nm)
- Corrected value on holder on oil cooler line
- Corrected value on headers to section 2 bolts (differentiation US version / Euro version)
- Corrected clutch master cylinder to pedal assembly bolt torque
- Corrected values for clutch hydraulic pipes coupling bolts
- Added complete gearbox tightening torques information (including SMG specific torques)
- Corrected reverse light switch (16 Nm instead of 20 Nm)
- Corrected guibo to transmission output flange torque
- Corrected stabilize link torque
- Added steering column adjusment screw torque
- Added steering colum sliding piece nut torque
- Corrected torques on rear upper / lower control arms
- Added door hinge and closing bar nuts torques
- Added front impact absorber tightening torque
- Corrected seat belt slider to body bolt torque

2016 August 23
- Added information about differential (Axle cap bolts + preload...)

2017 January 31
- Added lots of information for engine rebuild
- Made a permanent link to latest version : http://sawashie.free.fr/M3/TorqueSpec/E46%20M3%20TORQUE%20SPECS%20LR.pdf

Errata

N/A

To be checked

- Alternator pulley torque ?

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Original post :

Sorry, no turbro thread here.
But, it's not because the E46 M3 has no torque that it cannot be torqued right, right ?

So I made this : updated

I will add it to the torque thread. Tried to verify as many as possible, but of course I may have made mistakes, so please tell me if you see any !

I made this because we took a friend's car apart in order to repair the RACP, and we wanted to torque everything back to factory specs, which got me started.
I will print this and always leave it in the garage. Very easy to check tightening torques.

Any feedback on how to make it better appreciated !

[MightyY]

Wow, awesome work. Thanks for sharing it.

[dafoe]

Your awesome!! Thank you!!

[Flow]

You're welcome ! So many ressources here, that was something I can contribute to
Just realized I did everything in Nm. Should I convert everything to Ft Lbs ? Would that be easier for american users ?

[poms302]

Awesome I love torques

[cyberlando]

Originally Posted by Flow

You're welcome ! So many ressources here, that was something I can contribute to
Just realized I did everything in Nm. Should I convert everything to Ft Lbs ? Would that be easier for american users ?

I was just gonna ask if you had it in foot lbs !

This is amazing for lack of better terms man..!!!

I'm literally in the middle of a full engine rebuild and you have no idea how much you just helped me out !!

Sent from my SM-N910F using Tapatalk

[Flow]

Originally Posted by cyberlando

I was just gonna ask if you had it in foot lbs !

This is amazing for lack of better terms man..!!!

I'm literally in the middle of a full engine rebuild and you have no idea how much you just helped me out !!

Sent from my SM-N910F using Tapatalk

No problem. I hope I did not make any mistakes. I tried to verify all of the torques as much as possible. Always check if they make sense

To convert to Ft Lbs, I can do that of course, but will need some time. It's late here now, and I need to get some sleep before a big day of work tomorrow.

In the mean time :
Nm x 0,737562149277 = Ft Lbs
Nm x 8,85074610683 = Inch Lbs

[cyberlando]

Sure thing man!!! I can convert manually for now lol

Just let us know when you update it....Im sure you literally and single handedly saved many people lots of time doing research!

Thanks again man!

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