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 > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing
 
EXXEL Distributions
Post Reply
 
Thread Tools Search this Thread
      06-30-2008, 11:07 PM   #1
rmashman
Private
16
Rep
59
Posts

Drives: 2008 M3
Join Date: Nov 2007
Location: San Diego

iTrader: (0)

E92 M3 does not have Clutch Delay Valve (CDV)

I ordered two Clutch Delay Valves from my dealer so I could try knocking out the valve as described in the 335 Forum.

I got them today and they have no delay valve in them. They are a clear pipe with diameter of about 4.5mm

Check this link below. This shows two photos 1) a view of the plastic pipe with the small opening, indicating the CDV. 2) has the valve knocked out.

The parts I got from BMW look exactly like photo #2. They are basically a connecting pipe with no mechanism

http://www.billswebspace.com/BMWCDVMod.htm

My parts guy always orders parts by my car serial number.

Although the parts for the M3 and 335 look identical they have a different part number. M3 part # 21 52 2 283 914.

Zeckhausen hadn't yet looked at an M3 CDV so they didn't know if it was the same or different than a 335.

I suppose its possible that the one in my car has a CDV in it but I have not noticed any shifting problems. So for the present I am going to assume the my car has the part number above.

Another indicator is that unlike the 335 which has the number 25 painted on it with two stripes. The M3 piece is all black with no painted or other numbers or bands on it.

The next time my car is up on my lift, I will take off the transmission cover and confirm that the CDV housing is free of any markings.

One less thing I have to do.

Rob
Appreciate 0
      07-02-2008, 07:13 AM   #2
BRDHNTR
Ground Pilot
BRDHNTR's Avatar
United_States
41
Rep
548
Posts

Drives: e92 BMW M3
Join Date: May 2008
Location: Waverly, PA

iTrader: (0)

Garage List
2002 M3  [0.00]
2008 e92 M3  [0.00]
That's interesting, but not surprising. The e39 M5 didn't have a clutch delay valve, but the e46 M3 did and they were made at the same time (well 2001-2003 were the overlapping years).
__________________
"The laws of physics cannot be repealed, even with DSC." - BMW Owner's Manual

Appreciate 0
      07-02-2008, 07:19 AM   #3
Big Windy
Major General
Big Windy's Avatar
United_States
150
Rep
5,124
Posts

Drives: None
Join Date: Mar 2007
Location: Bay Area

iTrader: (0)

hmmmmmm....good to know
Appreciate 0
      07-02-2008, 08:41 AM   #4
J08M3
Major General
J08M3's Avatar
United_States
285
Rep
6,007
Posts

Drives: 2011 M3 COUPE
Join Date: May 2008
Location: NEW YORK

iTrader: (8)

This is the second post I've seen about this. One other company on here doing a M3 build took out the piece and noticed there is no valve in it too.
__________________
Appreciate 0
      07-02-2008, 01:53 PM   #5
LittleRocket
Private First Class
LittleRocket's Avatar
United_States
9
Rep
146
Posts

Drives: AW E92 M3
Join Date: Feb 2008
Location: SO CAL

iTrader: (0)

Thats great to hear I was told otherwise. I am glad you found this out
__________________
Appreciate 0
      07-02-2008, 02:29 PM   #6
rvacha
Captain
rvacha's Avatar
United_States
62
Rep
800
Posts

Drives: '08 E92 M3
Join Date: Mar 2007
Location: Cleveland, OH

iTrader: (0)

Garage List
2008 E92 M3  [0.00]
All this CDV interest is a tad bit odd to me. Who cares if there is a CDV if you like how the clutch operates? It's easy to tell if you have CDV - just pop the clutch. If you have to pick up your head off the back seat you don't have CDV. If the clutch slips a while, you've got it. Generally the only time BMW adds a CDV is if the powertrain can't handle the impulse/torque of the engine without long term damage. Not a problem on the M3
__________________

'16 F30 340i xDrive 6MT Melbourne/Black
'08 E92 M3 6MT Jerez/Speed Cloth
'18 F80 M3 6MT SO/CSAT
Appreciate 0
      07-02-2008, 02:32 PM   #7
!Xoible
Banned
United_States
823
Rep
46,029
Posts

Drives: ....
Join Date: Nov 2006
Location: .

iTrader: (4)

Garage List
2008 M3  [4.00]
2007 335i  [9.00]
2008 528i  [8.00]
2006 Infiniti - G35 ...  [8.00]
^^ the problem is we're mostly unhappy with clutch/shifter feel. we're just looking for enhancements like ssk, etc..
Appreciate 0
      07-03-2008, 07:55 AM   #8
lucid
Major General
lucid's Avatar
United_States
374
Rep
8,033
Posts

Drives: E30 M3; Expedition
Join Date: Apr 2007
Location: USA

iTrader: (0)

No offense, but I don't understand why people are not happy with the clutch and the shifter length. I think everything works really well. I've never had a mishift, and the clutch engages quickly and always does what I want it to do. As I put more miles into it, the slight 1-2 resistance has improved significantly. I can only imagine things will be much better at 10000 miles. My only issue was with pedal spacing for heel and toe, and I solved that with a slight extensive plate I cut out and screwed down.

Thanks to the OP for verifying that the car does not have CDV though.
__________________
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 08:39 AM.




m3post
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