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      11-20-2011, 10:38 PM   #1
RaptorKTM
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Clutch - Delayed Engagement

I have been noticing that there is a delay from my foot full engagement to the clutch actually engaging, starting to annoy me because its making me feel like a retard driving it, which im not denying is possible but id like to think there is something that is doing this. I have seen a few threads about different clutch issues just not sure which out of them is this exact problem and how to fix it.
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      11-20-2011, 10:49 PM   #2
ZCP M3
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You need to remove the Clutch Delay Valve (CDV) and bleed the clutch. It's between the clutch line and the slave cylinder.
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      11-20-2011, 10:49 PM   #3
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Quote:
Originally Posted by RaptorKTM View Post
I have been noticing that there is a delay from my foot full engagement to the clutch actually engaging, starting to annoy me because its making me feel like a retard driving it, which im not denying is possible but id like to think there is something that is doing this. I have seen a few threads about different clutch issues just not sure which out of them is this exact problem and how to fix it.
Cvd is causing this. Have it removed.
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Last edited by m3kerry; 11-21-2011 at 06:54 AM.
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      11-20-2011, 11:28 PM   #4
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Ok, could you by chance post a link to this, or is this something that the dealer can do?
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      11-20-2011, 11:42 PM   #5
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Quote:
Originally Posted by RaptorKTM View Post
Ok, could you by chance post a link to this, or is this something that the dealer can do?
take it to a local shop who actually knows what they're doing.
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      11-21-2011, 12:05 AM   #6
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ouch
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      11-21-2011, 06:59 AM   #7
m3kerry
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The clutch delay valve is there for people that can't drive stick. It cause really rough shifts. I have had it removed on my last two and it is night and day difference in shifting. You can have it removed and drilled out a little so it is still on the car if warranty issues are a worry.
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      11-21-2011, 08:09 AM   #8
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You can keep the standard appearance by using the original valve. No need to drill anything, just pop out the restrictor in the valve using a suitable sized punch and put the valve back in line. You must pressure bleed the system afterwards. Dealer won't do this if the car is still under warranty. Should you be concerned that you will have a warranty issue at some time you can put the restrictor back in.
This is one the cheapest and simplest mods you can do.
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      11-21-2011, 10:20 AM   #9
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CDV DELETE
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      11-21-2011, 10:31 AM   #10
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does everyone have a CDV on the stock 1M's?? I haven't felt any such delay in the clutch...as in, when i want to shift, I can do it almost simultaneously with the depression of the clutch...
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      11-21-2011, 10:38 AM   #11
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Quote:
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does everyone have a CDV on the stock 1M's?? I haven't felt any such delay in the clutch...as in, when i want to shift, I can do it almost simultaneously with the depression of the clutch...
Yes.

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      11-21-2011, 02:28 PM   #12
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Have it pulled and just put it back in if you need to.
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      11-21-2011, 03:07 PM   #13
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+1000 on the CDV delete mod
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      11-21-2011, 03:53 PM   #14
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Does anyone know the actual technical reason BMW put a CDV? I know it reduces drivetrain shock, perhaps helping maintain traction?
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      11-21-2011, 04:00 PM   #15
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Quote:
Originally Posted by Fundahl View Post
Does anyone know the actual technical reason BMW put a CDV? I know it reduces drivetrain shock, perhaps helping maintain traction?
Protects the drive-train components and puts more load on the clutch. Drive-shaft & diff are covered by warranty, clutch isn't.
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      11-21-2011, 05:21 PM   #16
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Have it pulled and just put it back in if you need to.
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      11-27-2011, 11:01 PM   #17
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I am still learning the car, but I have not yet noticed anything wrong with the clutch pedal feel. Maybe my driving is just that good!
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      11-27-2011, 11:20 PM   #18
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If there is nothing wrong then don't fix it.
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      11-27-2011, 11:56 PM   #19
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The clutch delay valve is part number 13 in this diagram:



Here are a couple great threads on the topic:

http://www.1addicts.com/forums/showt...cdv+delete+diy

http://www.1addicts.com/forums/showthread.php?t=558362

Hope this helps!
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