Clutch Delay Valve? - BMW Forum - BimmerWerkz.com
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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#1 (permalink) Old 06-05-2006, 07:45 AM
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Clutch Delay Valve?

Has anyone heard of this this or done it? Did it actually feel much different?

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

Greg

97 328iS, Manual, Stock
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#2 (permalink) Old 06-05-2006, 10:54 AM
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What a concept...

Seems silly to put something like that in the line. Why don't you pull it out and see if there's any difference. Let us know.




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#3 (permalink) Old 06-05-2006, 12:50 PM
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I don't have any complaints with my car. Parking has never been an issue. I chirped the tires nicely yesterday going into second, just to lose to a Toyota Avalon with four people in it up to 90MPH. Who new they were 270HP 3.5L? I haven't been keeping up with toyotas.

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#4 (permalink) Old 06-05-2006, 01:35 PM
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You'll probably notice a difference.
many people report a huge difference in driving and clutch control.


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#5 (permalink) Old 06-05-2006, 05:13 PM
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notice at the top the E36 isn't metioned but near the middle/end the E36 starts to be mentioned and they give parts numbers for the an E36 323 and 328 but no others... interesting...
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#6 (permalink) Old 06-06-2006, 12:20 AM
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wait a minute. do all stock e36's have the cdv? if they do mine is shot because i can dump the clutch all day and have the same tire burning launches every time and i can chirp the tires going into second too. is this normal or is this page explaining how to get rid of these operations.
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#7 (permalink) Old 06-06-2006, 02:37 AM
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Quote:
Originally Posted by polaris448
wait a minute. do all stock e36's have the cdv? if they do mine is shot because i can dump the clutch all day and have the same tire burning launches every time and i can chirp the tires going into second too. is this normal or is this page explaining how to get rid of these operations.
You have a CDV and should be able to spin tires. That's not the best indicator of performance, however. The tires could have low grip or the suspension could be worn or broken.
Anyway, the CDV just delays the clutch engagement subtly. It doesn't make the clutch slip all the time. The different diameters allow different dampning (and thus delay). i.e. 5 series for example is smother and less quick to respond. It saves your drivetrain if just a little bit of rash from a hard start or downshift. I'll keep mine.
Now if I owned a 5 series or E46 it would be bypassed. I have driven both and the clutch performance in those cars is about on par with a cavalier.

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#8 (permalink) Old 06-06-2006, 08:01 AM
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OK, threads at bimmerforums seemed to be related mostly to E39 series.

edit
Well, I found another thread saying that every E36 owner should do it. Maybe this summer.

step by step DIY
http://home.comcast.net/~e21graymark...DV_Removal.pdf

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Last edited by Gkamysz; 06-06-2006 at 08:18 AM.
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#9 (permalink) Old 06-06-2006, 12:06 PM
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its a decent mod for guys in the obd2 cars, the obd1 cars never had it. i know a few people who loved it. so i would look into it, its pretty cheap to do as well.

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#10 (permalink) Old 06-07-2006, 12:38 AM
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the CDV was invented so that retards could learn to drive stick without blowing up.


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#11 (permalink) Old 06-07-2006, 03:53 AM
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Quote:
Originally Posted by triggrhaapi
the CDV was invented so that retards could learn to drive stick without blowing up.
haha yep.


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#12 (permalink) Old 06-17-2006, 02:47 PM
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I did the CDV delete today. I'm very happy with the results. I've never been happy with the clutch action since I got the car. To say the least, it was inconsistent. I removed the pedal assist spring last year to improve feel and it helped. Removing the delay valve fixed the system, as that is a built in defect to me. I didn't have a 7mm socket or box and wrench wrench for the bleed screw, which was a pain, but it the end it's done and it was worth it. I highly recommend this free mod.

I also got a set of #68 M Sport wheels on the car today. Looks good, pics later.

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#13 (permalink) Old 06-18-2006, 01:35 PM
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i took my CDV out when my clutch/flywheel was put in along with ss clutch lines and my clutch feels AMAZING now

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#14 (permalink) Old 11-04-2006, 06:53 PM
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in an 01 540i, where is the CDV? is it accesible under the car or is it under the drivers side cabin filter?

also, can i just throw it away? or do i have to replace it with a modified one?

i have no warranty on the vehicle. although how could it be detected if i did have one?
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#15 (permalink) Old 11-04-2006, 09:38 PM
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nvm, i figured it out.
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