Clutch Delay Valve on a 330ci???

pwraudio1 · #1 (**permalink**) 06-28-2005, 10:52 AM

I was told they did not come with a CDV, only the 330i... Then way does my clutch slip so bad when it is dropped??? with less than 2,000 miles on it...

pwraudio1 · #2 (**permalink**) 06-28-2005, 11:07 AM

My production date is 9/00...

kneb · #3 (**permalink**) 06-28-2005, 04:38 PM

I was under the impression that all 5- and 6-speed E46ers came with a CDV from the factory. I bought mine used and, during a visual under-body inspection, saw that the previous owner had already removed the CDV for me. Such a nice bloke!

The only way to find out is to get under there and take a look: http://www.bmw325i.net/cdv_removal.shtml

myUserID · #4 (**permalink**) 07-22-2005, 12:49 PM

I just removed my CDV on my 02 M3 last weekend. I have to remove some plastic underbody panels to get to it but it was an easy job. I did have to get my wife to help bleed the clutch line. About 2-3 pedal pumps/bleeds and no more air. I can really tell a difference but not overly dramatic, just a more natual feeling clutch. My build date was 10/01 BTW.

jason 77 · #5 (**permalink**) 07-25-2005, 08:54 AM

I have heard about this clutch delay valve..... and I was just wondering what exactly it's purpose is? I mean BMW must have put it in there for a reason right?

Does anyone know?

ruffneck119 · #6 (**permalink**) 07-25-2005, 09:16 AM

Yeah and when you remove it you get a better response or what? ANy DIY on this?

e30Schwarzes · #7 (**permalink**) 07-25-2005, 10:04 AM

ive been told its to soften the "impact" of the clutch engaging the tranny. i know with my e30, when i drop the clutch there is a jerk in the acceleration. so im assuming thats theyre way of solving that problem with the newer bmw's.

kneb · #8 (**permalink**) 07-25-2005, 12:11 PM

Quote:

Originally Posted by jason 77

I have heard about this clutch delay valve..... and I was just wondering what exactly it's purpose is? I mean BMW must have put it in there for a reason right?

Does anyone know?

The CDV allowed a constant and smooth flow of hydraulic fluid to pass through it at any given time. This made it impossible to "drop" the clutch. Even though you may have released the clutch pedal from the ground in a half second, the clutch would take longer than that to engage.

Basically, it's like a tollbooth between you and your clutch; It's a useless invention just put there to slow things down and piss you off.

kneb · #9 (**permalink**) 07-25-2005, 12:13 PM

Quote:

Originally Posted by ruffneck119

Yeah and when you remove it you get a better response or what? ANy DIY on this?

DIY link is in post #3 on this page.

e30Schwarzes · #10 (**permalink**) 07-25-2005, 09:15 PM

thats what i said.... duh.

ruffneck119 · #11 (**permalink**) 07-25-2005, 09:18 PM

I am going to be doing this little od later this week anyone ever have any side effects by doing it?

NCBimma · #12 (**permalink**) 07-26-2005, 01:01 PM

let me just say..i hope you have your dual stage traction control turned off from both stages before "dropping" the clutch...i assume you are tryin to peel out, eh?

ruffneck119 · #13 (**permalink**) 07-26-2005, 02:53 PM

What do you mean by both stages? (I am new to the whole DSC thing) Oh, and I am only doing it to get a bit more feel form the clutch.

mihalis · #14 (**permalink**) 08-24-2005, 09:26 PM

I just want to say, awesome job on the car! It looks amazing!

myUserID · #15 (**permalink**) 08-25-2005, 06:38 AM

The only way to tell is to look for it. My build date is 10/01 on a 2002 M3. It was there and I was excited so I could take the F-n thing off!
Make sure you have all the tools including the flair wrench.
I used a small pair of needle-nose vice grips with elec tape wrapped around the ends to pich the rubber clutch line, only lost a few drops of fluid but had to open and close the bleeder a few time to get the air out with my wife's help. You will need to bleed the clutch line.