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


Go Back   ZPOST > BMW Z4 Technical Talk > Suspension and Braking Chat
  TireRack

SUPPORT ZPOST BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER, THANKS!
Post Reply
 
Thread Tools Search this Thread
      07-17-2012, 07:09 AM   #1
Shipkiller
Colonel
Shipkiller's Avatar
United_States
187
Rep
2,138
Posts

Drives: Me
Join Date: Oct 2007
Location: Virginia Beach

iTrader: (3)

Garage List
Actual Experience with Aftermarket Rear Shock Mounts.

I have done the searching and the research. I have formed my own opinion but want to solicit other opinions from users who actually have aftermarket rear shock mounts on the car.

Which ones have the appearance of the ‘best value’?
Which ones have the best control?

I am NOT looking for improvements in ride quality. I want something that works.
Appreciate 0
      07-17-2012, 04:18 PM   #2
3002 tii
Lieutenant General
3002 tii's Avatar
2272
Rep
12,559
Posts

Drives: Z4 M, X5, GX460
Join Date: Apr 2008
Location: CT

iTrader: (99)

Garage List
I don't see how one could tell the "difference" in RSM's aside from ride quality as defined by NVH. When I installed my coilovers I went with the Rogue ones simply b/c they are rebuildable but I wasn't able to discern any real improvements from the RSM alone.
__________________
Follow for latest mods
Appreciate 0
      07-17-2012, 05:37 PM   #3
exdos
Second Lieutenant
England
6
Rep
222
Posts

Drives: Z3 M Coupe(S54) and Z4 M Coupe
Join Date: Apr 2008
Location: UK

iTrader: (0)

I have Rogue top mounts on my Z3MC which have been on the car for about 7 years now with no problems.

When I recently fitted AC Schnitzer Racing suspension to my Z4MC I made some top mount brackets from Z3 Roadster strengthening plates with Meyle rear top mounts. I knocked the bolts out of the meyle mounts and then welded them into the Z3 plates so that the Meyle top mounts could be mounted from within the wheel arches, without having to remove the rear trim to remove the suspension or replace the top mount bushes. The cost was less than half the price of the Rogue mounts.



Appreciate 0
      07-17-2012, 05:43 PM   #4
inTgr8r
Lieutenant General
inTgr8r's Avatar
Canada
2422
Rep
11,665
Posts

Drives: M2 Comp
Join Date: Mar 2006
Location: Toronto

iTrader: (10)

Quote:
Originally Posted by Dubbedown View Post
I don't see how one could tell the "difference" in RSM's aside from ride quality as defined by NVH. When I installed my coilovers I went with the Rogue ones simply b/c they are rebuildable but I wasn't able to discern any real improvements from the RSM alone.
^+1
I have the rouge eng ones as well but I don't think you can go wrong with any of them.....
__________________
'21 M2C Hockenheim Silver
'18 718 Cayman S Lava Orange (sold)
'13 E92 M3 Santorini Blue (sold)
'07 Z4 M Coupe Alpine White (sold)
Appreciate 0
      07-17-2012, 05:49 PM   #5
Shipkiller
Colonel
Shipkiller's Avatar
United_States
187
Rep
2,138
Posts

Drives: Me
Join Date: Oct 2007
Location: Virginia Beach

iTrader: (3)

Garage List
Thanks for the comments.

I am slowly acquiring the parts to replace all the rubber in the suspension and I have new dampers to put on the car also. It will be the best time to replace the RSM's.

Now if the E36 offset FCAB inserts pan out....
Appreciate 0
      07-17-2012, 08:51 PM   #6
seank
enthusiast
seank's Avatar
48
Rep
1,695
Posts

Drives: e30 m3,e90 wagon,sprinter,z4m
Join Date: Dec 2011
Location: sacramento, ca

iTrader: (4)

I have some new RE's that I can sell if you want them?
Appreciate 0
      07-18-2012, 05:44 AM   #7
Shipkiller
Colonel
Shipkiller's Avatar
United_States
187
Rep
2,138
Posts

Drives: Me
Join Date: Oct 2007
Location: Virginia Beach

iTrader: (3)

Garage List
Quote:
Originally Posted by seank View Post
I have some new RE's that I can sell if you want them?
If you still have them in Oct, I will take them off your hands.

All this work will be performed in Nov. when I get back off of travel.
Appreciate 0
      07-18-2012, 10:56 AM   #8
3002 tii
Lieutenant General
3002 tii's Avatar
2272
Rep
12,559
Posts

Drives: Z4 M, X5, GX460
Join Date: Apr 2008
Location: CT

iTrader: (99)

Garage List
I've done both fcab's and rtab's recently. After doing my share of research, even for a car that sees track time, rubber seems like the way to go. They last a good 40k and going poly leads to more trouble than its worth (increased NVH & premature failure).

I bought the oe fcabs with the pre-pressed lollipop for a quick install. On the rear I went oe + vorshlag limiters but this is one area I might've gone Powerflex just because the install is so much easier and I've yet to read a bad reivew Powerflex rtab's.
__________________
Follow for latest mods
Appreciate 0
      07-18-2012, 05:21 PM   #9
modernbeat
Motorsports Engineer
modernbeat's Avatar
46
Rep
95
Posts

Drives: Caged
Join Date: Dec 2011
Location: Dallas, TX

iTrader: (0)

Quote:
Originally Posted by exdos View Post
You need to install a larger washer on that mount. The washer diameter should be larger than the metal neck of the mount. Also, something is going on with the stack and the locking portion of the locknut has not engaged the threads of the shock shaft.
__________________
Jason McDaniel at Vorshlag
Appreciate 0
      07-19-2012, 03:21 AM   #10
exdos
Second Lieutenant
England
6
Rep
222
Posts

Drives: Z3 M Coupe(S54) and Z4 M Coupe
Join Date: Apr 2008
Location: UK

iTrader: (0)

Quote:
Originally Posted by modernbeat View Post
You need to install a larger washer on that mount. The washer diameter should be larger than the metal neck of the mount. Also, something is going on with the stack and the locking portion of the locknut has not engaged the threads of the shock shaft.
I know what you mean but the shock is an AC Schnitzer Racing shock and that's the way it fits.
Appreciate 0
      07-19-2012, 06:05 AM   #11
Shipkiller
Colonel
Shipkiller's Avatar
United_States
187
Rep
2,138
Posts

Drives: Me
Join Date: Oct 2007
Location: Virginia Beach

iTrader: (3)

Garage List
Standard mechanical maintenance practices state that minimum thread engagement on a ni-lock nut is the shaft/bolt be flush with the end of the nut. Additionally no more than 10 threads (maximum) should protrude from the body of the nut.

On a regular nut the minimum thread engagement should be two threads protruding from the face of the nut. The maximum is still the same.

You do have an issue. The shaft/nut combination does not have its maximum holding power in its current configuration.
Appreciate 0
      07-19-2012, 06:14 AM   #12
exdos
Second Lieutenant
England
6
Rep
222
Posts

Drives: Z3 M Coupe(S54) and Z4 M Coupe
Join Date: Apr 2008
Location: UK

iTrader: (0)

Thanks for your input guys

I've just removed the rear shocks and revisited this issue. I'd replaced the OEM top mounts (done 25k miles) with new Meyle ones. So, I've now reverted to the original OEM shock mounts which are still in excellent condition (visually) and these are few mm shorter and so I've reinstalled them with the OEM larger domed washer and the nut fits so that it's flush with the top of the damper thread and that's the best that I'm going to get from these dampers. Thanks again for your helpful comments: it's appreciated.
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 -5. The time now is 07:14 AM.




zpost
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
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