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


Go Back   ZPOST > BMW Z4 Roadster and Coupe > General BMW Z4 Forum
  TireRack

SUPPORT ZPOST BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER, THANKS!
Post Reply
 
Thread Tools Search this Thread
      03-25-2010, 07:25 PM   #45
VitaminT
First Lieutenant
United_States
4
Rep
301
Posts

Drives: 2006 M Roadster
Join Date: Sep 2007
Location: Alabama

iTrader: (0)

After I got used to the car I haven't had it happen but that may be because I tend to wait a split second after letting off at 8k to pull the shifter to second. In my case it almost sounded like the selector made it past the syncro but didn't engage with the actual gear. It was a high pitch grind.
Appreciate 0
      03-25-2010, 07:53 PM   #46
330indy
CCA member
330indy's Avatar
United_States
15
Rep
1,019
Posts

Drives: e46 + e92
Join Date: May 2005
Location: Indy

iTrader: (0)

have to admit, the synchros have a job... and smooth shifting has rewards.
__________________
V8 M3 deserves Redline Oil
Group 5

DD: E46 330i 2002; Z4M 2006- sold; E39 530i 2001- sold; E36 325iC 1994- sold
Appreciate 0
      03-28-2010, 08:49 PM   #47
just2talented
Private First Class
just2talented's Avatar
2
Rep
179
Posts

Drives: Alpine ///M roadster
Join Date: May 2009
Location: Queens NY

iTrader: (0)

I've also noticed that. Once your at redline in first, clutch to the floor, if wait the extra half a second and then slam 2nd. It won't do it. However it needs to be said that our 50-60k$ sports cars shouldn't have this problem whatsoever. I feel this is a synchro issue. I've had syncrho issues in other cars and this problem is very similar. Going to do an amsoil tranny fluid swap. Amsoil syncrho mesh fluid.
Appreciate 0
      04-05-2010, 06:05 AM   #48
ANILE8
Lieutenant
ANILE8's Avatar
Australia
19
Rep
511
Posts

Drives: Z4 M Coupé - Carbon Black
Join Date: Mar 2008
Location: Melbourne, Australia

iTrader: (0)

Quote:
Originally Posted by MVF4Rrider View Post
Before I departed Germany in early June of this year, I inquired about the grind and was told it's all shifting technique. They told me to hold the gear shift with firm pressure to the left as you pull the lever into 2nd (keep the left pressure all the way through the shift). I haven't had a grind since and I can shift at high rpms at will. CDV has nothing to do with it.
I can confirm that MVF4Rrider's technique WORKS (Firm pressure to the left all the way through the shift).

By making this minor change to your driving style, when you want to you can now shift at the redline with confidence.

Thank you for sharing this secret.

__________________


StopTech Trophy Sport STR-60 380x32mm / StopTech Trophy Sport STR-40 355x32mm | Bridgestone RE-11 | ADV.1 | CDV Delete | TMS Front Camber Kit | TMS Rear Camber Arms | RE Diablo's
Appreciate 0
      04-05-2010, 01:31 PM   #49
RichardTS
Second Lieutenant
RichardTS's Avatar
2
Rep
238
Posts

Drives: 335i E92 & Z4 M
Join Date: Oct 2007
Location: New Orleans

iTrader: (0)

Quote:
Originally Posted by MVF4Rrider View Post
I might buy that (in hope--which is far from fact) had I just not spent the last 5 years in Germany. Over there, when techs need answers to questions or concerns they don't shoot from the hip, they call Munich and get the right answers direct from the source. My car is at 7,000 miles and it was broken in following the BMW guidelines to the letter. It would grind now if I don't use the method conveyed to me. But I guess at 10,000 miles it will magically correct itself? Doubt it. Ultimately I don't abuse it and the few times I experienced the grind I wasn't revving it into oblivion.
Mine now has about 19K and it is better than it was at 10K. What they told you in Germany is exactly correct and I hope everybody is doing this when they shift. If you were going to tell someone else where 2nd is, wouldn't you say "back and toward the driver?" If you think this while driving you will be doing it correctly. Mine would probably go to 4th if I didn't keep the pressure to the left on it.

I think you may have the definitive answer and this is probably why some people don't have a problem and others do.
Appreciate 0
      04-10-2010, 02:25 AM   #50
Thisisdudewhoru
Lieutenant
Thisisdudewhoru's Avatar
United_States
8
Rep
452
Posts

Drives: Z4Mc
Join Date: Mar 2010
Location: Bristol, TN

iTrader: (1)

In my old car(07 civic si, yea I know, no comparison) everyone was getting 1-2 shift problems at high rpms(we have same 8k rev limit). Ours was due to the mounts being too soft and it moving the motor and tranny enough to cause slack in linkages and mess up the shifts. Also on our cars if it mounts were not replaced or a engine torque dampner wasn't installed, after grind after grind happened, irreversible damage was done to the trannies and they had to be replaced for the problem to go away.

But I'm currently waiting on my M to arrive with 14k miles on the clock and I'll give some feedback soon.
__________________
Appreciate 0
      04-10-2010, 08:28 AM   #51
The__J__Factor
Major
The__J__Factor's Avatar
Australia
19
Rep
1,028
Posts

Drives: ///M Coupe
Join Date: Sep 2008
Location: Gold Coast, Australia

iTrader: (0)

Maybe we should do a group buy for new tranny mounts.
Rouge Engineering has them for like $55

http://www.rogueengineering.com/Merc...tegory_Code=TM
__________________
EVO X MR - Phantom Black - Ti Exhaust - Ti UICP - AQM Intake - 206kws 12.8sec
Z4 M Coupe - H&R - RE Diablo - RPi - Tekarbon - Sold
Appreciate 0
      04-10-2010, 08:40 AM   #52
ga41
Lieutenant
ga41's Avatar
Cyprus
4
Rep
452
Posts

Drives: Z4 M Coupe
Join Date: Jun 2009
Location: Paphos

iTrader: (0)

Garage List
2006 Z4 M Coupe  [0.00]
Quote:
Originally Posted by The__J__Factor View Post
Maybe we should do a group buy for new tranny mounts.
Rouge Engineering has them for like $55

http://www.rogueengineering.com/Merc...tegory_Code=TM
If it would help with the occasional grind then i'd be interested in a group buy (if shipping them out here isnt horrendously expensive of course).
__________________
Appreciate 0
      04-10-2010, 08:55 AM   #53
The__J__Factor
Major
The__J__Factor's Avatar
Australia
19
Rep
1,028
Posts

Drives: ///M Coupe
Join Date: Sep 2008
Location: Gold Coast, Australia

iTrader: (0)

Depends if its a problem with tranny movement causing the grind then the stiffer mounts could help a lot.

If its a syncro issue it might not help as much.
Dont think shipping would be too much since its a relatively small package.
__________________
EVO X MR - Phantom Black - Ti Exhaust - Ti UICP - AQM Intake - 206kws 12.8sec
Z4 M Coupe - H&R - RE Diablo - RPi - Tekarbon - Sold
Appreciate 0
      04-10-2010, 11:23 AM   #54
thekurgan
Bad Lieutenant
thekurgan's Avatar
United_States
55
Rep
3,101
Posts

Drives: E90M3
Join Date: Aug 2007
Location: Sacramento

iTrader: (0)

Garage List
2008 BMW M3  [0.00]
Quote:
Originally Posted by The__J__Factor View Post
Maybe we should do a group buy for new tranny mounts.
Rouge Engineering has them for like $55

http://www.rogueengineering.com/Merc...tegory_Code=TM
I have some on order from LeatherZ and will have them installed week after next; my local Indie shop did mention the black mounts over the urethane, I guess the noise and vibration in the Z is more pronounced than other BMWs.
__________________

08 E90M3 6MT Alpinweiss/Carbon/BPMSport 91/BMW Pedals/Dinan Exhaust/Ultimate Clutch Pedal/Alcantara Wheel/Rear Fog Switch/Rattle fixes
Appreciate 0
      04-10-2010, 11:26 AM   #55
thekurgan
Bad Lieutenant
thekurgan's Avatar
United_States
55
Rep
3,101
Posts

Drives: E90M3
Join Date: Aug 2007
Location: Sacramento

iTrader: (0)

Garage List
2008 BMW M3  [0.00]
Quote:
Originally Posted by The__J__Factor View Post
Depends if its a problem with tranny movement causing the grind then the stiffer mounts could help a lot.

If its a syncro issue it might not help as much.
Dont think shipping would be too much since its a relatively small package.
I agree, but the transmission is so inconsistent and I would think a syncro issue would cause the issue each and every time. For instance, on my daily commute, I have to make a hard left onto a rotary and uphill, so I hit the left hard and apply power, the 1->2 is butter smooth. It seems when I'm tossing the car left hard, the shift is sweet, so I suspected the tranny or engine movement. This issue is also worse as the warm weather approaches ... rubber gets softer and more pliable in the heat???

Figured I'd start with the tranny as it's inexpensive to try regardless and BMW tranny mounts aren't known to be the best.
__________________

08 E90M3 6MT Alpinweiss/Carbon/BPMSport 91/BMW Pedals/Dinan Exhaust/Ultimate Clutch Pedal/Alcantara Wheel/Rear Fog Switch/Rattle fixes
Appreciate 0
      04-18-2010, 09:12 PM   #56
330indy
CCA member
330indy's Avatar
United_States
15
Rep
1,019
Posts

Drives: e46 + e92
Join Date: May 2005
Location: Indy

iTrader: (0)

Have you guys with the grinding 2nd gear issue had the motor mount bolts addressed?
I wonder if there's a connection?
__________________
V8 M3 deserves Redline Oil
Group 5

DD: E46 330i 2002; Z4M 2006- sold; E39 530i 2001- sold; E36 325iC 1994- sold
Appreciate 0
      04-18-2010, 11:49 PM   #57
Thisisdudewhoru
Lieutenant
Thisisdudewhoru's Avatar
United_States
8
Rep
452
Posts

Drives: Z4Mc
Join Date: Mar 2010
Location: Bristol, TN

iTrader: (1)

Well, I got my car friday. So far, no grinds.
__________________
Appreciate 0
      04-19-2010, 10:32 AM   #58
thekurgan
Bad Lieutenant
thekurgan's Avatar
United_States
55
Rep
3,101
Posts

Drives: E90M3
Join Date: Aug 2007
Location: Sacramento

iTrader: (0)

Garage List
2008 BMW M3  [0.00]
Quote:
Originally Posted by 330indy View Post
Have you guys with the grinding 2nd gear issue had the motor mount bolts addressed?
I wonder if there's a connection?
I've had mine checked repeatedly at Indie and dealership visits, I guess I have the ones made after the SIB was produced (Aug/2008), and hence the reason I'm changing the transmission mount bushings this week or early next week, probably nothing to do with the lack of smoothness (I have no grinding/crunching), but rather to do with the inconsistency with which it shifts.
__________________

08 E90M3 6MT Alpinweiss/Carbon/BPMSport 91/BMW Pedals/Dinan Exhaust/Ultimate Clutch Pedal/Alcantara Wheel/Rear Fog Switch/Rattle fixes
Appreciate 0
      04-19-2010, 01:12 PM   #59
330indy
CCA member
330indy's Avatar
United_States
15
Rep
1,019
Posts

Drives: e46 + e92
Join Date: May 2005
Location: Indy

iTrader: (0)

I took my M-R out yesterday to heat it up with revs and engine braking. The shifts were silky. as 1-2-3 were equally slick with downshifts included.
I was really looking for the symptom, but it just wasn't an issue for me.
__________________
V8 M3 deserves Redline Oil
Group 5

DD: E46 330i 2002; Z4M 2006- sold; E39 530i 2001- sold; E36 325iC 1994- sold
Appreciate 0
      04-22-2010, 01:21 PM   #60
thekurgan
Bad Lieutenant
thekurgan's Avatar
United_States
55
Rep
3,101
Posts

Drives: E90M3
Join Date: Aug 2007
Location: Sacramento

iTrader: (0)

Garage List
2008 BMW M3  [0.00]
Had the Rogue transmissions mounts installed today; techs took one look and compared the ones removed and the new ones were: "nice, beefy". I find the shifting is improved and especially when braking and moving the lever, especially the 3->2 where I've been denied a couple of times. That is now gone. This isn't a cure for the notchiness, but it is shifting consistent now. The original bushings were the typical BMW hourglass rubber, you could compress the rubber with your fingers whereas the Rogue mounts are still neoprene rubber, they are far stiffer and should last much longer.
__________________

08 E90M3 6MT Alpinweiss/Carbon/BPMSport 91/BMW Pedals/Dinan Exhaust/Ultimate Clutch Pedal/Alcantara Wheel/Rear Fog Switch/Rattle fixes
Appreciate 0
      04-22-2010, 02:35 PM   #61
inTgr8r
Major General
inTgr8r's Avatar
Canada
128
Rep
8,352
Posts

Drives: 07 M Coupe
Join Date: Mar 2006
Location: Toronto

iTrader: (7)

^ good to know.
Do you have an SSK installed as well?
__________________
Alpinweiss '07 M Coupe •DKF Section1•RPi GT exhaust•Fabspeed Headers•Autosolutions SSK•APR splitter•Tekarbon headlights•StrongStrut STB•H&R fr ARB•Poly FCAB/RTAB•Volk Racing G2•Direzza ZII•Stoptech BBK•Vibra-Tech mtr mounts•
Appreciate 0
      04-22-2010, 02:53 PM   #62
thekurgan
Bad Lieutenant
thekurgan's Avatar
United_States
55
Rep
3,101
Posts

Drives: E90M3
Join Date: Aug 2007
Location: Sacramento

iTrader: (0)

Garage List
2008 BMW M3  [0.00]
Quote:
Originally Posted by inTgr8r View Post
^ good to know.
Do you have an SSK installed as well?

No, the car doesn't need any type of ssk as far as I'm concerned; at least for me, the throws are nice and firm. The Whalen helps a lot with the nice firm shifts.
__________________

08 E90M3 6MT Alpinweiss/Carbon/BPMSport 91/BMW Pedals/Dinan Exhaust/Ultimate Clutch Pedal/Alcantara Wheel/Rear Fog Switch/Rattle fixes
Appreciate 0
      04-22-2010, 03:02 PM   #63
vasaline
Private First Class
2
Rep
167
Posts

Drives: 06 M Roadster
Join Date: May 2009
Location: So. Cal

iTrader: (0)

This grind that everyone is talking about, is it actual noise that u hear from tranny or a grinding feel on the shifter when u shift?
Appreciate 0
      04-22-2010, 03:06 PM   #64
inTgr8r
Major General
inTgr8r's Avatar
Canada
128
Rep
8,352
Posts

Drives: 07 M Coupe
Join Date: Mar 2006
Location: Toronto

iTrader: (7)

I agree that it doesn't need to be shorter.
I just wondered if the improved pivot bushings & mechanicals would gain similar improvements as the changing tranny bushings.
__________________
Alpinweiss '07 M Coupe •DKF Section1•RPi GT exhaust•Fabspeed Headers•Autosolutions SSK•APR splitter•Tekarbon headlights•StrongStrut STB•H&R fr ARB•Poly FCAB/RTAB•Volk Racing G2•Direzza ZII•Stoptech BBK•Vibra-Tech mtr mounts•
Appreciate 0
      04-22-2010, 03:08 PM   #65
inTgr8r
Major General
inTgr8r's Avatar
Canada
128
Rep
8,352
Posts

Drives: 07 M Coupe
Join Date: Mar 2006
Location: Toronto

iTrader: (7)

Quote:
Originally Posted by vasaline View Post
This grind that everyone is talking about, is it actual noise that u hear from tranny or a grinding feel on the shifter when u shift?
Both.
Plus rejection of 3-2 downshifts.
You will know when/if it happens.

I've been lucky so far myself.
__________________
Alpinweiss '07 M Coupe •DKF Section1•RPi GT exhaust•Fabspeed Headers•Autosolutions SSK•APR splitter•Tekarbon headlights•StrongStrut STB•H&R fr ARB•Poly FCAB/RTAB•Volk Racing G2•Direzza ZII•Stoptech BBK•Vibra-Tech mtr mounts•
Appreciate 0
      04-22-2010, 03:14 PM   #66
vasaline
Private First Class
2
Rep
167
Posts

Drives: 06 M Roadster
Join Date: May 2009
Location: So. Cal

iTrader: (0)

What I am experiencing is the grinding feel on the shifter. Only way for me to not have that is to shift slower. Is there any other tehnique that I can use to prevent this grind besides shifting slower as it is kind of defeats the purpose of driving a high performance sports car.
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
Forum Jump


All times are GMT -4. The time now is 04:18 AM.




zpost
zpost
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, 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