Clutch Delay Valve - BMW 3-Series (E90 E92) Forum

segfault · 05-09-2005, 09:23 PM

Does anyone know if the E90 includes the notorious BMW Clutch Delay Valve (CDV)? I assume that, if it does, there will be a mod kit to remove it.

BMWAustin · 05-09-2005, 09:51 PM

I don't think so, atleast it is not mentioned any where in the manuals.

E90Fleet · 05-10-2005, 06:54 AM

Yes, it does have it

Terps · 05-10-2005, 11:08 PM

What does a clutch delay valve do and why is it notorious? Thanks.

MarkE90M3 · 05-10-2005, 11:37 PM

This page does a good job describing what the infamously hated CDV is, what it does, and will convince you to remove it

http://www.zeckhausen.com/CDV.htm

segfault · 05-11-2005, 12:53 AM

I e-mailed Zeckhausen to ask if they plan on offering a CDV modification service for the E90, and will post their response here when I receive word.

RedStripe · 05-11-2005, 01:45 AM

I'm assuming this CDV thing only applies to cars with manual transmissions, right?

timzerofive · 05-11-2005, 02:27 AM

No wonder when I was test driving it was hard to gauge the gas/clutch ratio. I thought it was just because I was use to a racing clutch that catches right away, but if this will happen even later on, I would definitely want this removed.

pete330 · 05-11-2005, 01:30 PM

I will definitly be removing/modifiying it. Does anyone know if a different valve will be required for the E90?

E90Fleet · 05-11-2005, 01:47 PM

The E90 valve looks very different from the E46 one, its much larger and also mounts to the body

E90Fleet · 05-11-2005, 01:53 PM

Had my dealer take a screenshot and email it to me

The CDV is No 13
And mounts to the body with no 12

pete330 · 05-11-2005, 01:55 PM

Thanks for the illustration - very clear.

DOes changing the CDV out void the warranty in any way? If I have transmission problems at 25k, are they going to try and blame it on this valve not being there?

RedStripe · 05-11-2005, 02:43 PM

Do cars with Steptronic transmissions be affected by this CDV?

E90Fleet · 05-11-2005, 03:03 PM

Quote:

Originally Posted by RedStripe

Do cars with Steptronic transmissions be affected by this CDV?

No it only on manuals

E90Fleet · 05-11-2005, 03:04 PM

Quote:

Originally Posted by pete330

Thanks for the illustration - very clear.

DOes changing the CDV out void the warranty in any way? If I have transmission problems at 25k, are they going to try and blame it on this valve not being there?

I do know BMW here has refused to fix problems on some peoples cars due to the valve being removed

MarkE90M3 · 05-11-2005, 03:49 PM

In the US I havent heard about anyone having service refused because of this. In fact, I'd be really impressed if any of the dealers even noticed it was missing. Its so tiny and hard to tell its there, unless you are specifically looking for it.

E90Fleet · 05-11-2005, 06:01 PM

Quote:

Originally Posted by MarkE90M3

In the US I havent heard about anyone having service refused because of this. In fact, I'd be really impressed if any of the dealers even noticed it was missing. Its so tiny and hard to tell its there, unless you are specifically looking for it.

I meant fix it free under warranty

They actually look for it because they know it is removed
The E90 one doesnt look like it can be removed as it attaches the 2 lines together

segfault · 05-12-2005, 12:31 AM

Zeckhausen says they don't have a part number for it yet, but once they do, they plan on developing a mod service, and plan to update their website in the next couple of months.

E90fleet,
Despite the screw-the-customer attitude of many of the dealers here in the US, it's surprising that they would notice such a small detail, unless they were instructed to look for it by BMWNA.

E90Fleet · 05-12-2005, 04:45 AM

Quote:

Originally Posted by segfault

Zeckhausen says they don't have a part number for it yet, but once they do, they plan on developing a mod service, and plan to update their website in the next couple of months.

E90fleet,
Despite the screw-the-customer attitude of many of the dealers here in the US, it's surprising that they would notice such a small detail, unless they were instructed to look for it by BMWNA.

The dealers here are instructed to look for it when looking at certain clutch related problems, but probably wont see it in normal servicing

Tierfreund · 05-12-2005, 05:31 AM

Part No of the CDV is 21526764872 and it´s less than 5 bucks.

May the drilling begin...

E90Fleet · 05-12-2005, 06:10 AM

Quote:

Originally Posted by Tierfreund

Part No of the CDV is 21526764872 and it´s less than 5 bucks.

May the drilling begin...

Please remember thats for LHD only, RHD ones have a diferent number

segfault · 05-12-2005, 11:51 PM

Quote:

Originally Posted by Tierfreund

Part No of the CDV is 21526764872 and it´s less than 5 bucks.

May the drilling begin...

I e-mailed Zeckhausen with the above part number and informed him of our discussion here. Thanks, Tierfreund!

05-09-2005, 09:23 PM	#1
segfault Second Lieutenant Drives: No longer own a BMW Join Date: Apr 2005 Location: . Posts: 137 iTrader: (0)	Clutch Delay Valve Does anyone know if the E90 includes the notorious BMW Clutch Delay Valve (CDV)? I assume that, if it does, there will be a mod kit to remove it.

05-09-2005, 09:51 PM	#2
BMWAustin Second Lieutenant Drives: e90 330i Join Date: Mar 2005 Location: Austin, TX Posts: 135 iTrader: (0)	I don't think so, atleast it is not mentioned any where in the manuals. __________________ E90 330i, SG, Beige, Walnut wood, PP, SP, Auto

05-10-2005, 11:37 PM	#5
MarkE90M3 Administrator Drives: E46 / E90 M3 Join Date: Mar 2005 Location: NYC Posts: 3,310 iTrader: (1) View MarkE90M3's Garage	This page does a good job describing what the infamously hated CDV is, what it does, and will convince you to remove it http://www.zeckhausen.com/CDV.htm __________________ BMWtheultimatedrivingmachine

05-11-2005, 01:53 PM	#11
E90Fleet Major General Drives: BMW Join Date: Apr 2005 Location: South Africa Posts: 6,515 iTrader: (0)	Had my dealer take a screenshot and email it to me The CDV is No 13 And mounts to the body with no 12 Attached Images

05-11-2005, 03:49 PM	#16
MarkE90M3 Administrator Drives: E46 / E90 M3 Join Date: Mar 2005 Location: NYC Posts: 3,310 iTrader: (1) View MarkE90M3's Garage	In the US I havent heard about anyone having service refused because of this. In fact, I'd be really impressed if any of the dealers even noticed it was missing. Its so tiny and hard to tell its there, unless you are specifically looking for it. __________________ BMWtheultimatedrivingmachine

05-10-2005, 06:54 AM	#3
E90Fleet Major General Drives: BMW Join Date: Apr 2005 Location: South Africa Posts: 6,515 iTrader: (0)	Yes, it does have it

05-10-2005, 11:08 PM	#4
Terps Captain Drives: E92 M3 fanatic Join Date: Mar 2005 Location: MD Posts: 654 iTrader: (0)	What does a clutch delay valve do and why is it notorious? Thanks.

05-11-2005, 12:53 AM	#6
segfault Second Lieutenant Drives: No longer own a BMW Join Date: Apr 2005 Location: . Posts: 137 iTrader: (0)	I e-mailed Zeckhausen to ask if they plan on offering a CDV modification service for the E90, and will post their response here when I receive word.

05-11-2005, 01:45 AM	#7
RedStripe Captain Drives: 2006 BMW 325i Join Date: May 2005 Location: Texas Posts: 657 iTrader: (1) View RedStripe's Garage	I'm assuming this CDV thing only applies to cars with manual transmissions, right?

05-11-2005, 02:27 AM	#8
timzerofive there is no spoon Drives: 330i manual Join Date: May 2005 Location: Irvine Posts: 798 iTrader: (0) View timzerofive's Garage	No wonder when I was test driving it was hard to gauge the gas/clutch ratio. I thought it was just because I was use to a racing clutch that catches right away, but if this will happen even later on, I would definitely want this removed.

05-11-2005, 01:30 PM	#9
pete330 Enlisted Member Drives: sold - 98 E36 M3 Join Date: May 2005 Location: Chicago - moving to Dallas Posts: 21 iTrader: (0)	I will definitly be removing/modifiying it. Does anyone know if a different valve will be required for the E90?

05-11-2005, 01:47 PM	#10
E90Fleet Major General Drives: BMW Join Date: Apr 2005 Location: South Africa Posts: 6,515 iTrader: (0)	The E90 valve looks very different from the E46 one, its much larger and also mounts to the body

05-11-2005, 01:55 PM	#12
pete330 Enlisted Member Drives: sold - 98 E36 M3 Join Date: May 2005 Location: Chicago - moving to Dallas Posts: 21 iTrader: (0)	Thanks for the illustration - very clear. DOes changing the CDV out void the warranty in any way? If I have transmission problems at 25k, are they going to try and blame it on this valve not being there?

05-11-2005, 02:43 PM	#13
RedStripe Captain Drives: 2006 BMW 325i Join Date: May 2005 Location: Texas Posts: 657 iTrader: (1) View RedStripe's Garage	Do cars with Steptronic transmissions be affected by this CDV?

05-12-2005, 12:31 AM	#18
segfault Second Lieutenant Drives: No longer own a BMW Join Date: Apr 2005 Location: . Posts: 137 iTrader: (0)	Zeckhausen says they don't have a part number for it yet, but once they do, they plan on developing a mod service, and plan to update their website in the next couple of months. E90fleet, Despite the screw-the-customer attitude of many of the dealers here in the US, it's surprising that they would notice such a small detail, unless they were instructed to look for it by BMWNA.

05-12-2005, 05:31 AM	#20
Tierfreund Major Drives: E90 330i Join Date: Apr 2005 Location: Germany Posts: 1,003 iTrader: (0)	Part No of the CDV is 21526764872 and it´s less than 5 bucks. May the drilling begin...