E90Post
 


TNT Racewerks
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > Friendly torque spec reminder - top hats 13mm bolt



Reply
 
Thread Tools Search this Thread
      05-12-2013, 01:44 PM   #1
Cripple
Captain
Cripple's Avatar
14
Rep
669
Posts

 
Drives: 14' M235I
Join Date: Dec 2012
Location: Canada

iTrader: (3)

Friendly torque spec reminder - top hats 13mm bolt

Don't forget to torque your top struts 13mm bolts to 26lbs instead of 42lbs. You will notice a huge difference in noise (clicking when turning wheel) and drivability (sloppy in the front end vs stiffer and responsive...

Don't ask how I would know....

FML.

(wasted a few hours checking everything besides this until the end...)
__________________
14' M235I | BMW Performance Exhaust | BMW Performance Diffuser | BMW Performance Carbon Interior | ER DP |
JB4 S2 | BC Forged HB29's | N54Tuning.com | getBMWparts.com
Appreciate 0
      05-13-2013, 08:53 AM   #2
Chefcg1
Major
Chefcg1's Avatar
United_States
18
Rep
1,091
Posts

 
Drives: 2008 BMW 335i
Join Date: Apr 2009
Location: Mount Airy, NC

iTrader: (6)

I thought it was 47lbs? What made you come up with 26lbs?
__________________
2008 335i coupe AW 6AT, RB Turbos, PROcede 2.5 V5, Alpina Flash, Injen Intake, VK MW DP . Helix IC, Vishnu PnP Meth(M10 nozzel), M3 sides, OEM Aero Lip, VMR V710 Midnight Blue, LUX H8, HID Fogs, M3 front bits, D2 Copilovers, Whiteline Rear Bushing inserts, Custom M3 Steering Wheel, Cyba scoops, M2 Performance Exhaust
Appreciate 0
      05-13-2013, 09:02 AM   #3
Cripple
Captain
Cripple's Avatar
14
Rep
669
Posts

 
Drives: 14' M235I
Join Date: Dec 2012
Location: Canada

iTrader: (3)

__________________
14' M235I | BMW Performance Exhaust | BMW Performance Diffuser | BMW Performance Carbon Interior | ER DP |
JB4 S2 | BC Forged HB29's | N54Tuning.com | getBMWparts.com
Appreciate 0
      05-13-2013, 09:24 AM   #4
Chefcg1
Major
Chefcg1's Avatar
United_States
18
Rep
1,091
Posts

 
Drives: 2008 BMW 335i
Join Date: Apr 2009
Location: Mount Airy, NC

iTrader: (6)

Front strut mount clearly says 47lbs in video? Which bolt are you referring too?
__________________
2008 335i coupe AW 6AT, RB Turbos, PROcede 2.5 V5, Alpina Flash, Injen Intake, VK MW DP . Helix IC, Vishnu PnP Meth(M10 nozzel), M3 sides, OEM Aero Lip, VMR V710 Midnight Blue, LUX H8, HID Fogs, M3 front bits, D2 Copilovers, Whiteline Rear Bushing inserts, Custom M3 Steering Wheel, Cyba scoops, M2 Performance Exhaust
Appreciate 0
      05-13-2013, 09:34 AM   #5
Cripple
Captain
Cripple's Avatar
14
Rep
669
Posts

 
Drives: 14' M235I
Join Date: Dec 2012
Location: Canada

iTrader: (3)

__________________
14' M235I | BMW Performance Exhaust | BMW Performance Diffuser | BMW Performance Carbon Interior | ER DP |
JB4 S2 | BC Forged HB29's | N54Tuning.com | getBMWparts.com
Appreciate 0
      05-13-2013, 11:43 AM   #6
gtaccord
Major
United_States
13
Rep
1,099
Posts

 
Drives: 2009 BMW 335xi
Join Date: Feb 2012
Location: Maryland

iTrader: (7)

Garage List
That looks like one of outside bolts that attach the perch to the body. 25 ft lb is correct for those. The middle bolt that attaches the strut to the perch is 47 ft-lb.
Appreciate 0
      05-13-2013, 11:45 AM   #7
Cripple
Captain
Cripple's Avatar
14
Rep
669
Posts

 
Drives: 14' M235I
Join Date: Dec 2012
Location: Canada

iTrader: (3)

Quote:
Originally Posted by gtaccord View Post
That looks like one of outside bolts that attach the perch to the body. 25 ft lb is correct for those. The middle bolt that attaches the strut to the perch is 47 ft-lb.
Correct, those are the ones I was referring too. I have had a noise in my front end for awhile from those being over torqued. It was like a binding noise almost when I would turn the wheel at slow speed. I have googled this concern and a lot of people were replacing end links. I doubled checked my connections (since I just installed coilovers) and I had over torqued these. After adjusting the noise has gone away completely!
__________________
14' M235I | BMW Performance Exhaust | BMW Performance Diffuser | BMW Performance Carbon Interior | ER DP |
JB4 S2 | BC Forged HB29's | N54Tuning.com | getBMWparts.com
Appreciate 0
      05-13-2013, 11:53 AM   #8
gtaccord
Major
United_States
13
Rep
1,099
Posts

 
Drives: 2009 BMW 335xi
Join Date: Feb 2012
Location: Maryland

iTrader: (7)

Garage List
You are really lucky that you didn't snap one if you overtorqued those to 47. That is a rather common occurance on all cars with this suspension design.
Appreciate 0
      05-13-2013, 12:07 PM   #9
Cripple
Captain
Cripple's Avatar
14
Rep
669
Posts

 
Drives: 14' M235I
Join Date: Dec 2012
Location: Canada

iTrader: (3)

Phew. Good thing I checked!
__________________
14' M235I | BMW Performance Exhaust | BMW Performance Diffuser | BMW Performance Carbon Interior | ER DP |
JB4 S2 | BC Forged HB29's | N54Tuning.com | getBMWparts.com
Appreciate 0
      05-13-2013, 03:08 PM   #10
jetbill
Lieutenant
7
Rep
435
Posts

 
Drives: E90 335 M-Sport
Join Date: Feb 2012
Location: tampa

iTrader: (3)

So the strut bolts , the 3 that attach to the frame were over torqued causing binding and bad steering response?
__________________
For Sale:2013 BMW 335 EBII, M-Sport, M-LSD, MPPK, Dinan many options

http://f30.bimmerpost.com/forums/sho...5#post16830125
Appreciate 0
      05-13-2013, 03:54 PM   #11
Cripple
Captain
Cripple's Avatar
14
Rep
669
Posts

 
Drives: 14' M235I
Join Date: Dec 2012
Location: Canada

iTrader: (3)

Quote:
Originally Posted by jetbill View Post
So the strut bolts , the 3 that attach to the frame were over torqued causing binding and bad steering response?
Yup!
__________________
14' M235I | BMW Performance Exhaust | BMW Performance Diffuser | BMW Performance Carbon Interior | ER DP |
JB4 S2 | BC Forged HB29's | N54Tuning.com | getBMWparts.com
Appreciate 0
      05-15-2013, 03:46 PM   #12
Chefcg1
Major
Chefcg1's Avatar
United_States
18
Rep
1,091
Posts

 
Drives: 2008 BMW 335i
Join Date: Apr 2009
Location: Mount Airy, NC

iTrader: (6)

well that makes sense now I thought you were referring to the main bolt.
__________________
2008 335i coupe AW 6AT, RB Turbos, PROcede 2.5 V5, Alpina Flash, Injen Intake, VK MW DP . Helix IC, Vishnu PnP Meth(M10 nozzel), M3 sides, OEM Aero Lip, VMR V710 Midnight Blue, LUX H8, HID Fogs, M3 front bits, D2 Copilovers, Whiteline Rear Bushing inserts, Custom M3 Steering Wheel, Cyba scoops, M2 Performance Exhaust
Appreciate 0
      09-27-2013, 09:26 AM   #13
Dippydo
Captain
13
Rep
929
Posts

 
Drives: 2012 BMW F30
Join Date: May 2013
Location: Eden Prairie

iTrader: (0)

Garage List
2012 BMW  [0.50]
Interesting because I have been searching for the problem. I have a 2012 328i that I had new coil overs put on back in June and they are making the same noises you are talking about that started about 2 months ago perhaps?? My question is why would over torquing the top bolts cause this? I took it back to the shop and they contacted H&R and H&R thought it could be a bad top hat or I am running the fronts too low than what the coil overs are designed for which really stunned me. If you make a product that is adjustable then why would you allow it to be adjusted below what it is capable of was my thought. Forwarded this on to my shop and going to bring it in, but curious to know why this would happen by over tightening the bolts?? Hope this is it because I was kind of bummed hearing the noise and thinking WTF spent all this money to have a clinging noise...

Yes i know I dont have a E9x series..LOL...Still would appreciate some help :-)
Appreciate 0
      10-19-2014, 08:57 PM   #14
stelvio
New Member
0
Rep
10
Posts

 
Drives: '06 325xi
Join Date: Apr 2014
Location: Kitchener, ON

iTrader: (0)

I def overtorqued one or two of these lol one nut is tight on the bolt but together they're loose so the whole thing needs to come apart I guess.
I'm getting really sketchy steering when the front wheels unload then load again, its like each wheel wants to go in a different direction. This is the cause isn't it?
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 09:25 PM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST