E65 brake master cylinder on E39 - Page 3 - BMW M5 Forum and M6 Forums
E39 M5 and E52 Z8 Discussion 1998-2003 Advertiser's Forum

 5Likes
Reply
 
LinkBack Thread Tools Rate Thread Display Modes
post #21 of 45 Old 3rd April 2019, 04:56 PM Thread Starter
sreten
Member, Sport: On DSC: On (>100 posts)
 
sreten's Avatar
 
Join Date: Apr 2016
Location: Frankfurt, Germany
Posts: 189
Thanks: 57
Thanked 41 Times in 38 Posts
Here are pics from another forum.







Glad that you are happy with it. I'm still waiting on new brake pads before I decide if I'm going to try this.
sreten is online now  
Sponsored Links
Advertisement
 
post #22 of 45 Old 3rd April 2019, 05:20 PM
jmarch
Member, Sport: On DSC: On (>100 posts)
 
jmarch's Avatar
 
Join Date: Jul 2009
Location: SF Bay Area
Posts: 142
Thanks: 24
Thanked 2 Times in 2 Posts
This is fantastic. Thank you! One question - for the m10/m12 adaptor, do you know what the thread pitch is? I found this on Amazon:

https://www.amazon.com/Fitting-Reduc...sr=1-1-catcorr

Do you think this will work?
jmarch is offline  
post #23 of 45 Old 3rd April 2019, 06:12 PM
austrianvespaguy
Member, Sport: On DSC: On (>100 posts)
 
austrianvespaguy's Avatar
 
Join Date: May 2018
Location: Dacula, GA
Posts: 104
Thanks: 47
Thanked 3 Times in 2 Posts
Mmm, I don't think that one will work; I think they're both 1.0mm pitches, so M12x1 to M10x1.
austrianvespaguy is offline  
 
post #24 of 45 Old 3rd April 2019, 06:19 PM
jmarch
Member, Sport: On DSC: On (>100 posts)
 
jmarch's Avatar
 
Join Date: Jul 2009
Location: SF Bay Area
Posts: 142
Thanks: 24
Thanked 2 Times in 2 Posts
Quote:
Originally Posted by austrianvespaguy View Post
Mmm, I don't think that one will work; I think they're both 1.0mm pitches, so M12x1 to M10x1.
This looks like this might work


https://agscompany.com/product/brass...12x1-0-bubble/

Thanks!

Last edited by jmarch; 3rd April 2019 at 07:15 PM.
jmarch is offline  
post #25 of 45 Old 3rd April 2019, 09:34 PM
KrautHammer
Member, Sport: Off DSC: On (>50 posts)
 
KrautHammer's Avatar
 
Join Date: Sep 2017
Location: Colorado
Posts: 72
Thanks: 14
Thanked 7 Times in 7 Posts
Garage
@sreten

So your impression is that the brakes are easier to modulate.

Is the engagement point higher, meaning more co-planer with the throttle to facilitate better heel-toe? Also with the car running, when you stand on the brake pedal hard, is the engagement firmer? Also does the pedal continue to "sink" when you stand on it hard at a full stop?

Thanks

2002 Beast Schwarz-Metallic/Blk Sport
KrautHammer is offline  
post #26 of 45 Old 3rd April 2019, 09:45 PM Thread Starter
sreten
Member, Sport: On DSC: On (>100 posts)
 
sreten's Avatar
 
Join Date: Apr 2016
Location: Frankfurt, Germany
Posts: 189
Thanks: 57
Thanked 41 Times in 38 Posts
I posted the initial findings but didn't to this mode myself yet.

Pictures are from BdiefAZ who's done this mode and hopefully he'll answer your questions as I'm interested to hear about it as well.

Sent from my SM-G965F using Tapatalk
sreten is online now  
post #27 of 45 Old 4th April 2019, 12:18 AM
bdiefAZ
Member, Sport: Off DSC: On (>50 posts)
 
bdiefAZ's Avatar
 
Join Date: Mar 2006
Location: Cave Creek, AZ
Posts: 59
Thanks: 0
Thanked 13 Times in 11 Posts
The pedal feels great, is simple to modulate, meaning there is no sudden bite, it is linear in application. Pedal is firm, no sink!

Hope this helps. We will be upgrading another car this weekend.
bdiefAZ is offline  
post #28 of 45 Old 4th April 2019, 12:28 AM
jmarch
Member, Sport: On DSC: On (>100 posts)
 
jmarch's Avatar
 
Join Date: Jul 2009
Location: SF Bay Area
Posts: 142
Thanks: 24
Thanked 2 Times in 2 Posts
Quote:
Originally Posted by bdiefAZ View Post
The pedal feels great, is simple to modulate, meaning there is no sudden bite, it is linear in application. Pedal is firm, no sink!

Hope this helps. We will be upgrading another car this weekend.
That's a big difference from what i have now.

Could you please take a look at the link I included above and let us know if you think that adapter will work.

Also, 34-33-6-797-650 is half the price of 34-33-6-785-926. Any idea what the difference is?

Thanks again for this write-up!

Last edited by jmarch; 4th April 2019 at 01:06 AM.
jmarch is offline  
post #29 of 45 Old 4th April 2019, 06:48 AM
bdiefAZ
Member, Sport: Off DSC: On (>50 posts)
 
bdiefAZ's Avatar
 
Join Date: Mar 2006
Location: Cave Creek, AZ
Posts: 59
Thanks: 0
Thanked 13 Times in 11 Posts
That adapter seems to be correct, the master cylinder part that I used was labeled:34-33-6-797-650 with BMW packaging and TRW on the part itself, you will have to modify the mounting flange as shown.

Let us know your results.
bdiefAZ is offline  
The Following 2 Users Say Thank You to bdiefAZ For This Useful Post:
jmarch (4th April 2019)
post #30 of 45 Old 9th April 2019, 04:32 PM
mr_g_bock
Member, Sport: On DSC: On (>100 posts)
 
Join Date: Jan 2012
Location: FL
Age: 70
Posts: 122
Thanks: 36
Thanked 8 Times in 7 Posts
Quote:
Originally Posted by KrautHammer View Post
@sreten

So your impression is that the brakes are easier to modulate.

Is the engagement point higher, meaning more co-planer with the throttle to facilitate better heel-toe? Also with the car running, when you stand on the brake pedal hard, is the engagement firmer? Also does the pedal continue to "sink" when you stand on it hard at a full stop?

Thanks

This modification is very interesting to me. I would like very much to also get answers to the questions asked in the above quote. Especially 'does the pedal continue to "sink" when you stand on it hard at a full stop?'. My 2002 M5 has had the sinking pedal issue for quite a while even after changing almost every brake parts, many power and software assisted bleeding. I just ordered DIS v57 software before I saw this thread.



Also, I checked various web sites for price and availability of the two MC part numbers for Genuine BMW parts. I see for the *****650 part number, a price of $76.72 from ECS Tuning and Turner Motorsport. For *****926 part number a price range of $182.00 from OEM Bimmer Parts and $386.25 from Pelican Parts. Any idea why so low to so high???


I really want to get the brakes back to normal at least if not improved.


Thanks!!!!
mr_g_bock is offline  
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the BMW M5 Forum and M6 Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes Rate This Thread
Linear Mode Linear Mode
Rate This Thread:



Similar Threads
Thread Thread Starter Forum Replies Last Post
Aux electrical fan and A/A don't work. culebreitor E39 M5 and E52 Z8 Discussion 16 18th May 2015 10:42 PM
M5 E39 Body Style S62 engine FACTS...Long V-10 4 Me E39 M5 and E52 Z8 Discussion 64 30th December 2013 08:35 PM
Brecus Motorsport [ Carbotech Brake Pads ] Brecus.com M5 E39 Group Buy Forum and Sponsor Discussion and Offerings 3 9th November 2010 07:24 PM
Trouble codes and descriptions LeMansBlau E39 M5 and E52 Z8 Discussion 1 19th April 2007 03:43 PM
Stereo, Sub, Woofer, DSP, Pin, Bass, Speakers V-10 4 Me E39 M5 and E52 Z8 Discussion 0 26th September 2003 07:54 PM

Posting Rules  
You may post new threads
You may 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome