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 > Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications
 
BPM Sport
Post Reply
 
Thread Tools Search this Thread
      06-18-2013, 03:17 PM   #89
Tim B.
Lieutenant
 
Drives: 2010 Jet Black E92 M3
Join Date: Dec 2009
Location: Baton Rouge, LA

Posts: 544
iTrader: (0)

Quote:
Originally Posted by Malek@MRF View Post
Your car might be one of the cars that needs the special differential fluid from BMW. Some differentials are very noisy, and there is a different fluid that has a friction modifier to reduce the noise. If you used that Redline oil for your differential, that is probably another cause of noise, and now with the more solid bushings you are hearing it more.

Switch your differential fluid to the friction modified fluid and give that a go. The car should not be as noisy as you are describing it.
Glad to hear it shouldn't be as loud as Shady is describing, as I just got mine in from Turner today......subframe & differential bushings. Hopefully my dealer will install them tomorrow. Malek, should the dealer have the tools for this? My tech there acted like he didn't know if they had the tools(to remove/install bushings for an M3) for this right off hand.....I thought that was a bit odd And how long should he take to do both sets of bushings do you think? Thanks.
Tim B. is offline  
0
Reply With Quote
      06-18-2013, 04:06 PM   #90
vinniechin
Vinnie
 
Drives: E93 Space Gray DCT
Join Date: Jun 2012
Location: Northern NJ

Posts: 174
iTrader: (1)

Quote:
Originally Posted by Tim B. View Post
Glad to hear it shouldn't be as loud as Shady is describing, as I just got mine in from Turner today......subframe & differential bushings. Hopefully my dealer will install them tomorrow. Malek, should the dealer have the tools for this? My tech there acted like he didn't know if they had the tools(to remove/install bushings for an M3) for this right off hand.....I thought that was a bit odd And how long should he take to do both sets of bushings do you think? Thanks.
It took my shop 3 hours to do the diff bushings and he didn't have the tool. He used a "disposable" tool clamped on the end of the bushing and tapped/hammered the old one out.

If you are doing the subframe bushings at the same time he can drop the subframe and do the diff bushings out of the car I believe and the total job in and out would take probably 7-8 hours.

My shop did not use/make a jig to replace subframe or have the tool to remove the stock subframe bushing (used a drill/air hammer).

Malek has said that you must use a jig or frame machine to ensure that the subframe goes back in straight. He said there is enough play to put it together "off" center. I didn't do it this way and wonder if I have any issues.

My shop did say that it probably wasn't necessary since when putting the subframe back in place if you don't put it in straight the pins would push the bushings back out.

However, with that said, I tend to trust Malek more since he has more experience working on the car. I don't know if I have any ill effects from the install but the car seems to track and drive straight. I wonder if Malek could comment if I have anything to worry about due to the way it was installed. Thanks.

Vin
vinniechin is offline   United_States
0
Reply With Quote
      06-18-2013, 06:29 PM   #91
alarroyo
Private
 
alarroyo's Avatar
 
Drives: 1988 E30 M3
Join Date: Jan 2011
Location: San Antonio

Posts: 57
iTrader: (0)

The jig I made was a 2 1/2" Black 3 pipe about 4 inches long, 1/2 all thread, 4 2" washers, 2 1 1/2" washers, 4 19mm nuts, and an old oil filter socket that goes over the pipe. The removal was very easy may be 15 minutes all three, putting them back was easy except one that gave me a little problem.
alarroyo is offline  
0
Reply With Quote
      06-18-2013, 06:30 PM   #92
alarroyo
Private
 
alarroyo's Avatar
 
Drives: 1988 E30 M3
Join Date: Jan 2011
Location: San Antonio

Posts: 57
iTrader: (0)

Most of the time was spent taking it apart and putting it back together.
alarroyo is offline  
0
Reply With Quote
      06-18-2013, 07:01 PM   #93
Z K
Colonel
 
Z K's Avatar
 
Drives: E90 M3
Join Date: Jul 2011
Location: San Francisco

Posts: 2,113
iTrader: (3)

The BMW Motorsport subframe mounts that Turner sells may be a good alternative for people who want stiff and strong subframe bushings but not so much the noises. They are harder than the stock M bushings but made of rubber. Also no need to lube like polyurethane bushings.
__________________
Auto Detailing Enthusiast!
Z K is offline   United_States
0
Reply With Quote
      06-19-2013, 06:25 AM   #94
pbonsalb
Lieutenant Colonel
 
Drives: 08 E90 M3, 99 E36 M3 Turbo
Join Date: Feb 2011
Location: Concord, NH

Posts: 1,676
iTrader: (3)

No need to lube poly MOUNTS like the subframe and diff, at least based on my experience of running them for years in my E36M3. You may need to lube poly BUSHINGS. The poly rear trailing arm bushings in my E36M3 squeaked a little in cold and/or cool/damp weather despite regreasing with marine grease, though I have never had any squeaks from my poly front control arm bushings.
pbonsalb is offline  
0
Reply With Quote
      06-19-2013, 08:18 AM   #95
sterile stork
coupe la goon
 
sterile stork's Avatar
 
Drives: 2008 M3 Coupe
Join Date: Jan 2006
Location: PDX

Posts: 925
iTrader: (16)

Garage List
2008 BMW M3  [0.00]
Quote:
Originally Posted by alarroyo View Post
The jig I made was a 2 1/2" Black 3 pipe about 4 inches long, 1/2 all thread, 4 2" washers, 2 1 1/2" washers, 4 19mm nuts, and an old oil filter socket that goes over the pipe. The removal was very easy may be 15 minutes all three, putting them back was easy except one that gave me a little problem.
Quote:
Originally Posted by alarroyo View Post
Most of the time was spent taking it apart and putting it back together.
Awesome! Thank you very much for sharing. Did you use the same jig on the front bushing as well?

Curiously, how might you tackle the subframe bushings if you were to do that?
sterile stork is offline   United_States
0
Reply With Quote
      06-19-2013, 09:28 AM   #96
alarroyo
Private
 
alarroyo's Avatar
 
Drives: 1988 E30 M3
Join Date: Jan 2011
Location: San Antonio

Posts: 57
iTrader: (0)

That jig worked for the front differential and the upper differential bushing, no issues it looked a little big but it work unless you can find a 2 1/4 pipe. If I ever do the subframe bushings I'll try this easy to make jig, http://www.e90post.com/forums/showth...=643435&page=2
alarroyo is offline  
0
Reply With Quote
      06-19-2013, 09:29 AM   #97
alarroyo
Private
 
alarroyo's Avatar
 
Drives: 1988 E30 M3
Join Date: Jan 2011
Location: San Antonio

Posts: 57
iTrader: (0)

It can be done all you need is patience and eventually you'll save a lot of money.
alarroyo is offline  
0
Reply With Quote
      06-19-2013, 01:53 PM   #98
Malek@MRF
BimmerPost Supporting Vendor

 
Malek@MRF's Avatar
 
Drives: E92 M3, E30, F30
Join Date: Jan 2008
Location: Irvine, California

Posts: 3,374
iTrader: (5)

Send a message via AIM to Malek@MRF
Quote:
Originally Posted by vinniechin View Post
It took my shop 3 hours to do the diff bushings and he didn't have the tool. He used a "disposable" tool clamped on the end of the bushing and tapped/hammered the old one out.

If you are doing the subframe bushings at the same time he can drop the subframe and do the diff bushings out of the car I believe and the total job in and out would take probably 7-8 hours.

My shop did not use/make a jig to replace subframe or have the tool to remove the stock subframe bushing (used a drill/air hammer).

Malek has said that you must use a jig or frame machine to ensure that the subframe goes back in straight. He said there is enough play to put it together "off" center. I didn't do it this way and wonder if I have any issues.

My shop did say that it probably wasn't necessary since when putting the subframe back in place if you don't put it in straight the pins would push the bushings back out.

However, with that said, I tend to trust Malek more since he has more experience working on the car. I don't know if I have any ill effects from the install but the car seems to track and drive straight. I wonder if Malek could comment if I have anything to worry about due to the way it was installed. Thanks.

Vin
Vin,

To drop the sub-frame out and do the job that way, it will take approximately 12 hours total as the car has to be aligned again as well.

It's definitely recommended that the frame go in indexed properly with respect to the front axle and laterally. However, if match marks are used before the frame is removed from the car (BMW does ensure the frame is perfectly positioned at the factory) then you can use this technique to get it back into the same position as before.

When my sub-frame, differential and mounts broke at 3,xxx miles, the dealer replaced the sub-frame, diff and miscellaneous components, however they attempted to align the car 3 times and failed each and every time. Not to my surprise, the frame was not indexed correctly and I had to end up doing it and all was well from then on out.
__________________

BMW PERFORMANCE SPECIALISTS. Suspension. Forced Induction. Brakes. Race Preparation. Service. Alignments.
OFFICIAL PARTNERS: Íhlins. KW Suspension. Brembo. AP Racing. ESS Tuning. iND Distribution. Turner Motorsport.
Facebook | Instagram | Yelp! | Flikr | Contact | YouTube
Malek@MRF is offline   United_States
0
Reply With Quote
      06-19-2013, 03:20 PM   #99
vinniechin
Vinnie
 
Drives: E93 Space Gray DCT
Join Date: Jun 2012
Location: Northern NJ

Posts: 174
iTrader: (1)

Thanks so much Malek. You are a wealth of knowledge.

I didn't realign my car because none of the arms were moved and the subframe came out as one single unit so I thought the alignment wouldn't be out of whack (assuming the subframe was put back properly - which I think now could have been done incorrectly (without markings or jig)).

I will align the car to see if everything is OK and if not I guess you would have to have a frame straightening machine to get everything back into place? Any other suggestions to check this?

Thanks again for all the help and information.

Vin
vinniechin is offline   United_States
0
Reply With Quote
      08-05-2013, 08:36 AM   #100
Wendall
***Major MammelToe
 
Wendall's Avatar
 
Drives: E92 M3 SG coupe
Join Date: Feb 2012
Location: Orange County, CA

Posts: 1,146
iTrader: (3)

Quote:
Originally Posted by Malek@MRF View Post
Vin,

To drop the sub-frame out and do the job that way, it will take approximately 12 hours total as the car has to be aligned again as well.

It's definitely recommended that the frame go in indexed properly with respect to the front axle and laterally. However, if match marks are used before the frame is removed from the car (BMW does ensure the frame is perfectly positioned at the factory) then you can use this technique to get it back into the same position as before.

When my sub-frame, differential and mounts broke at 3,xxx miles, the dealer replaced the sub-frame, diff and miscellaneous components, however they attempted to align the car 3 times and failed each and every time. Not to my surprise, the frame was not indexed correctly and I had to end up doing it and all was well from then on out.

Malek,

I just ordered the TMS solid delrin diff mounts. How many hours will it take to install?
__________________
E92 M3 SG DCT - AA Filter, Verstraβe Paddles, ECS SS, MH race stud, Stoptech BBK, MR Exhaust,RE Pulley, BPM Tune,Euro bumper and GTS lip, Euro MDM & DCT, KW CS, Recaro PP, TMS Soild Diff Mounts, MRF solid subframe mounts, GTS aero, RPM track built motor.

Wendall is offline   United_States
0
Reply With Quote
      08-06-2013, 07:48 PM   #101
fuzzybam
Private First Class
 
Drives: One with wheels
Join Date: Jul 2011
Location: USA

Posts: 197
iTrader: (0)

I guess BMW can never get subframes right...
fuzzybam is offline   United_States
0
Reply With Quote
      10-09-2013, 06:02 PM   #102
Malek@MRF
BimmerPost Supporting Vendor

 
Malek@MRF's Avatar
 
Drives: E92 M3, E30, F30
Join Date: Jan 2008
Location: Irvine, California

Posts: 3,374
iTrader: (5)

Send a message via AIM to Malek@MRF
An update for the community on the progress. This "package" will be ready to go for all E9x platforms in the following 2-3 weeks with various options on Sub-Frame upgrades and reinforcement.

For now, here are a few pictures of the MRF Engineering Motorsport E9x axle carrier bushings.





__________________

BMW PERFORMANCE SPECIALISTS. Suspension. Forced Induction. Brakes. Race Preparation. Service. Alignments.
OFFICIAL PARTNERS: Íhlins. KW Suspension. Brembo. AP Racing. ESS Tuning. iND Distribution. Turner Motorsport.
Facebook | Instagram | Yelp! | Flikr | Contact | YouTube
Malek@MRF is offline   United_States
0
Reply With Quote
      10-10-2013, 10:48 PM   #103
brado
Private First Class
 
Drives: 2009 e92 M3
Join Date: Mar 2012
Location: Bay Area CA

Posts: 108
iTrader: (0)

Quote:
Originally Posted by Malek@MRF View Post
An update for the community on the progress. This "package" will be ready to go for all E9x platforms in the following 2-3 weeks with various options on Sub-Frame upgrades and reinforcement.

For now, here are a few pictures of the MRF Engineering Motorsport E9x axle carrier bushings.





Sweet thanks for keeping us updated
brado is offline  
0
Reply With Quote
      10-11-2013, 09:53 AM   #104
Villanofun
Second Lieutenant
 
Drives: 2008 E92 ///M3
Join Date: May 2013
Location: United States

Posts: 217
iTrader: (0)

*Subscribed*
Villanofun is offline  
0
Reply With Quote
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
Forum Jump


All times are GMT -5. The time now is 09:01 PM.




m3post
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