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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Mon, Apr-11-2011, 05:36:31 PM   #31
roarf
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Default Re: Differential Bolts replacement DIY: updated bolts

Thanks for the DIY, I have the bolts and plan on doing this soon. I just have one question...

How would I go about getting the right torque value on these bolts if I have to hold the torque wrench at an angle? Don't you have to calculate a different torque value based on the angle of the wrench or something like that?
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Old Mon, Apr-11-2011, 09:07:59 PM   #32
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Default Re: Differential Bolts replacement DIY: updated bolts

funny I just did this yesterday. I didnt jack up the diff since I did one side at a time. It wasn't a problem. I did some blue loctite to be safe (solid bushings, I dont want them vibrating out)
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Old Mon, Apr-11-2011, 11:51:25 PM   #33
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Default Re: Differential Bolts replacement DIY: updated bolts

Thanks for the DIY, and specially pics of the tools you used. I tried tightening those bolts before but wasn't sure how to go about it due to the ackwards angles.
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Old Tue, Apr-19-2011, 08:15:04 PM   #34
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Default Re: Differential Bolts replacement DIY: updated bolts

If I have to hold the torque wrench at an angle in order to access the bolts, do I have to account for that in the torque value somehow? Or do I just set it to 61 ft*lbs and go?
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Old Tue, Apr-19-2011, 08:20:41 PM   #35
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Default Re: Differential Bolts replacement DIY: updated bolts

Quote:
Originally Posted by roarf View Post
If I have to hold the torque wrench at an angle in order to access the bolts, do I have to account for that in the torque value somehow? Or do I just set it to 61 ft*lbs and go?
If you are using the torque wrench on an angle some of the force will not directly translate to rotating the bolt, so I would just put the torque wrench a few ft-lb higher and call it a day. A couple ft-lb one way or another isn't going to make a significant difference, especially when torque values are around 60 ft-lb.
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Old Fri, Apr-22-2011, 05:54:10 PM   #36
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Default Re: Differential Bolts replacement DIY: updated bolts

Edit: Nvm. I re-used the washers.

As I pulled the first bolt out, I saw that it was already the updated bolt. Oh well, I already had started loosening it so I just changed them anyways and put a little blue loctite on the new bolts. For the record, neither of them were loose. And the front mounting bolt you can't even see because of things in the way, but you can just barely feel it. I could not feel any looseness in the front bolt.
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Old Sat, May-07-2011, 06:19:20 PM   #37
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Default Re: Differential Bolts replacement DIY: updated bolts

Pretty sure the torque settings are wrong. TIS has them at 200nm front and 20nm joint torque and 90 degree torque angle for rear as it is an e46/s54.

Also have you ispected the bushings? They are rubber and there is a removal install procedure in the TIS...

1AZ Final drive to rear axle carrier

E46 / S54, E85 / S54, E86 / S54 Front Observe repair instruction. 200 Nm

rear:

E46 / S54, E85 / S54, E86 / S54 Rear Observe repair instruction.

Jointing torque 20 Nm

Torque angle 90
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Old Sat, May-07-2011, 06:33:16 PM   #38
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Default Re: Differential Bolts replacement DIY: updated bolts

Can someone post the part# for the new bolts, thanks!
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Old Sat, May-07-2011, 09:22:39 PM   #39
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Default Re: Differential Bolts replacement DIY: updated bolts

Sorry misread TIS. See updated correct values above... Doh! Unless the new bolts come with different torque specs... Did they tell you the torque is different when you bought the bolts?
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Old Sun, May-08-2011, 02:22:19 PM   #40
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Default Re: Differential Bolts replacement DIY: updated bolts

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Originally Posted by I M Legend View Post
Can someone post the part# for the new bolts, thanks!
From the original post...

- revised bolts (2) part number 23 00 1 222 891
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Discussing Differential Bolts replacement DIY: updated bolts in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)