E90Post
 


VIBE Motorsports
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > DIY Guides > E92 Brake Piston Material?



Comment
 
Tutorial Tools Search this Tutorial
E92 Brake Piston Material?
Published by 2002
03-29-2013
E92 Brake Piston Material?

Please reply with the material used for the brake pistons in E92 calipers.

Is the piston metal or fibrous like some newer designs?

Is there a source for new pistons - most parts suppliers I have searched show only gaskets and dust covers for rebuilds!

Steve
Tutorial Tools
  #1  
By Efthreeoh on 03-30-2013, 07:47 AM
Member reviews
Difficulty [ 1 = Difficult ]
20%20%20%
1
Cost [ 1 = Expensive ]
20%20%20%
1
DIY Clarity [ 1 = Not clear ]
20%20%20%
1
Average 20%
I'd bet the piston is metal.

The P/N shows the seal, piston, and dust cover:

10 REPAIR SET BRAKE CALIPER 2 34116769090 $25.42

This P/N fits the E92 328 and 335. This info is from RealOEM.com
Attached Images
 
Reply With Quote
  #2  
By BillionPa on 03-30-2013, 06:19 PM
10 does not include the pistons

when i pulled my pads off, the piston seemed to be metal, probably steel
Reply With Quote
  #3  
By 2002 on 04-12-2013, 05:28 PM
Member reviews
Difficulty [ 1 = Difficult ]
20%20%20%
1
Cost [ 1 = Expensive ]
20%20%20%
1
DIY Clarity [ 1 = Not clear ]
20%20%20%
1
Average 20%
Thanks for the info. I was hoping BMW would have changed to newer material that doesn't rust. Anyway, I now know - thanks for your wisdom!
Reply With Quote
  #4  
By BillionPa on 04-14-2013, 12:38 AM
They made stainless steel replacement pistons for E36 race cars back in the day, but generally you can do better with special coatings now.

Xylar coating on a forged steel piston will not rust ( I do not know if they are factory coated, but that is what you should do if you want no rust )
Reply With Quote
Comment

Bookmarks

Tutorial Tools Search this Tutorial
Search this Tutorial:

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 11:50 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