BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > DIY Guides/ Discussions
 
European Auto Source
Post Reply
 
Thread Tools Search this Thread
      03-09-2017, 10:04 PM   #1
starkfu
Josef
starkfu's Avatar
United_States
9
Rep
97
Posts

Drives: '10 E90 M3 JB DCT
Join Date: May 2016
Location: Lovettsville, VA

iTrader: (0)

Request for Torque value: Flex disc bolts

I have found all other torque values I need from various threads in the DIY section, but I have searched for all sorts of variants of flex disc, guibo, torque values, etc - and I can't find the values for the 6 nut and bolts for the Guibo to trans output and driveshaft.

I have new bolts, but just want to make sure I torque them to the correct values.

Any help greatly appreciated!

Thank you!
__________________
Appreciate 0
      03-10-2017, 12:10 AM   #2
KawBoy
First Lieutenant
United_States
46
Rep
376
Posts

Drives: M
Join Date: May 2012
Location: SE FL

iTrader: (2)

This?

Appreciate 0
      03-10-2017, 11:54 AM   #3
starkfu
Josef
starkfu's Avatar
United_States
9
Rep
97
Posts

Drives: '10 E90 M3 JB DCT
Join Date: May 2016
Location: Lovettsville, VA

iTrader: (0)

I think that should be it - assuming we are the more aggressive thread on the M - so 48 ftlbs (64 Nm) it looks like - I'll go with that!

Thanks man!
__________________
Appreciate 0
      03-10-2017, 12:40 PM   #4
KawBoy
First Lieutenant
United_States
46
Rep
376
Posts

Drives: M
Join Date: May 2012
Location: SE FL

iTrader: (2)

The information I gave you is from TIS for the 2012 M3. It should be the correct.

Glad to be of assistance.
Appreciate 0
      03-10-2017, 01:03 PM   #5
starkfu
Josef
starkfu's Avatar
United_States
9
Rep
97
Posts

Drives: '10 E90 M3 JB DCT
Join Date: May 2016
Location: Lovettsville, VA

iTrader: (0)

Odd though - the bolts and nuts I have are M12
__________________
Appreciate 0
      03-10-2017, 01:05 PM   #6
starkfu
Josef
starkfu's Avatar
United_States
9
Rep
97
Posts

Drives: '10 E90 M3 JB DCT
Join Date: May 2016
Location: Lovettsville, VA

iTrader: (0)

Damn, I used to have TIS, maybe I should look into having it again....
__________________
Appreciate 0
      03-10-2017, 02:31 PM   #7
KawBoy
First Lieutenant
United_States
46
Rep
376
Posts

Drives: M
Join Date: May 2012
Location: SE FL

iTrader: (2)

@ $30/24 hours is really not a bad deal. I login, look at what I want and download a ton of stuff. Do it again every time I need something and download more info exactly for your VIN. They called it AIR now.
Appreciate 0
      03-10-2017, 03:10 PM   #8
starkfu
Josef
starkfu's Avatar
United_States
9
Rep
97
Posts

Drives: '10 E90 M3 JB DCT
Join Date: May 2016
Location: Lovettsville, VA

iTrader: (0)

signing up for it now - damn its all different, I feel like I'm learning a new language!
__________________
Appreciate 0
      03-10-2017, 03:40 PM   #9
starkfu
Josef
starkfu's Avatar
United_States
9
Rep
97
Posts

Drives: '10 E90 M3 JB DCT
Join Date: May 2016
Location: Lovettsville, VA

iTrader: (0)

see I think BMW might be confused - I have these bolts for the Guibo:

https://www.ecstuning.com/b-genuine-...h/26117527475/

And the matching nuts - which interestingly enough ECS lists as an M12 for the car.... something doesn't add up.

They match up to exactly what I pulled out and are M12, but even ECS doesn't list them as applicable to the E90.... I wonder if TIS meant to loop E9X M3 in with the E39 M5 and E46 M3 in that section....

__________________
Appreciate 0
      03-10-2017, 04:42 PM   #10
KawBoy
First Lieutenant
United_States
46
Rep
376
Posts

Drives: M
Join Date: May 2012
Location: SE FL

iTrader: (2)

BMW lists this bolt as M12X1,5X71-ZNS3, P/N 26117527475 as the ones you got. I don't have one to look at, but maybe you could check yours and see what grade they are (if they have the grade stamped on the head). Still doesn't specifically solve the problem , but it will probably get you close enough. IF they are grade 8.8, torque varies about 10%; not enough to worry about.
Appreciate 1
      03-11-2017, 12:17 AM   #11
starkfu
Josef
starkfu's Avatar
United_States
9
Rep
97
Posts

Drives: '10 E90 M3 JB DCT
Join Date: May 2016
Location: Lovettsville, VA

iTrader: (0)

The stamp is 10.9

I chose to do a stepped approach -

48 Nm (35 ftlbs) wasn't anywhere close to what they were when I pulled them off
64 Nm (48 ftlbs) still felt not tight enough compared to when I had taken them off
115 NM (84 ftlbs) I set to 84 and started to tighten, stopped when it felt close to the force it took to get them off - adjusted and measured at exactly 68 ftlbs - so that is what I went with.
__________________
Appreciate 0
Post 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


All times are GMT -4. The time now is 08:03 PM.




m3post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2017, 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