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Cdv removal clutch delay valve OMG!

2003 - 2009, roadster, coupe, facelift
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ben g
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Cdv removal clutch delay valve OMG!

Post by ben g » Sat Oct 21, 2017 5:58 pm

Been meaning to do this to mine ever since buying it, nearly 6 years ago :lol:

I'm always a bit worried it'll cause a failure somewhere in the drivetrain though.
Red Soft-top Sterling grey 3.0i - Z4M Front, Eibachs, Polybushed, Clear headlights, Triple clear spot rear lights, Shadow Chrome 107's, Sport MFSW, ZHP.

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Cdv removal clutch delay valve OMG!

Post by jamie_z4 » Sat Oct 21, 2017 6:13 pm

ben g wrote: Sat Oct 21, 2017 5:58 pm Been meaning to do this to mine ever since buying it, nearly 6 years ago :lol:

I'm always a bit worried it'll cause a failure somewhere in the drivetrain though.
Nah mate it's there for nobs who don't know how to drive bmws n end up doing the clutch and engine mounts in. You'll be fine!
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Cdv removal clutch delay valve OMG!

Post by Rusky » Sat Oct 21, 2017 6:36 pm

Is the cdv on the SMG as it is a manual gearbox?
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Cdv removal clutch delay valve OMG!

Post by rally-chris » Sat Oct 21, 2017 6:48 pm

Rusky wrote: Sat Oct 21, 2017 6:36 pm Is the cdv on the SMG as it is a manual gearbox?
No, because there is no manually operated clutch pedal in an SMG car. CDV is only there to provide some protection if a driver dumps the clutch (pedal) quickly.
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thanatu55
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Cdv removal clutch delay valve OMG!

Post by thanatu55 » Sat Oct 21, 2017 7:09 pm

I keep meaning to do this, it sounds like such a cheap and cheerful little mod for a big pay off.

MrPT wrote: Sat Oct 21, 2017 5:02 pmNice. Massive difference on the non-M. Bit like runflats really - crazy the car came from the factory with them! I can understand the need to protect the drivetrain, but it just feels lazily over-done.
I agree with this too. Since moving from runflats to decent tyres, despite lowering the back end a little the ride is so much more comfortable now! It feels like I've actually got some suspension.
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Cdv removal clutch delay valve OMG!

Post by jamie_z4 » Sat Oct 21, 2017 7:18 pm

thanatu55 wrote: Sat Oct 21, 2017 7:09 pm I keep meaning to do this, it sounds like such a cheap and cheerful little mod for a big pay off.

MrPT wrote: Sat Oct 21, 2017 5:02 pmNice. Massive difference on the non-M. Bit like runflats really - crazy the car came from the factory with them! I can understand the need to protect the drivetrain, but it just feels lazily over-done.
I agree with this too. Since moving from runflats to decent tyres, despite lowering the back end a little the ride is so much more comfortable now! It feels like I've actually got some suspension.
Go see Mike he's only in St Helens 20 quid well worth it!
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Cdv removal clutch delay valve OMG!

Post by Marlon » Sat Oct 21, 2017 7:21 pm

Z4 Gaz wrote: Sat Oct 21, 2017 5:41 pm
Ducklakeview wrote: Sat Oct 21, 2017 5:30 pm
Z4 Gaz wrote: Sat Oct 21, 2017 5:24 pm Sounds about right, was no where near as pronounced on my old M3.

P.S. You need to water proof your roof, it is saturated. :wink:
The outer layer of the roof ISN'T meant to be waterproof. Treating it and making it so causes it to stiffen and not fold properly.

Mike
Never heard that before. I use Autoglym on mine and the water beads off nicely and gives no problems folding, as I am sure is the case with many others. Much rather have mine protected than it being soaking wet all winter.
Mike is right, the outer layer should be porous - water should actually permeate (and soak it) and rely on the inner layer of Butyl to be the waterproof layer.
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Cdv removal clutch delay valve OMG!

Post by thanatu55 » Sat Oct 21, 2017 7:29 pm

jamie_z4 wrote: Sat Oct 21, 2017 7:18 pm
thanatu55 wrote: Sat Oct 21, 2017 7:09 pm I keep meaning to do this, it sounds like such a cheap and cheerful little mod for a big pay off.

MrPT wrote: Sat Oct 21, 2017 5:02 pmNice. Massive difference on the non-M. Bit like runflats really - crazy the car came from the factory with them! I can understand the need to protect the drivetrain, but it just feels lazily over-done.
I agree with this too. Since moving from runflats to decent tyres, despite lowering the back end a little the ride is so much more comfortable now! It feels like I've actually got some suspension.
Go see Mike he's only in St Helens 20 quid well worth it!
Is it legal to drive without wing mirrors? Even so, from a safety aspect probably not worth it. When I get them back it's next on my to do list. Nearly a month now without wing mirrors!
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Cdv removal clutch delay valve OMG!

Post by Steve84N » Sat Oct 21, 2017 9:17 pm

Of course it's illegal, although strictly speaking you only have to have the offside if you have a rear view mirror but you're a muppet for driving around so long without them.
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Cdv removal clutch delay valve OMG!

Post by thanatu55 » Sat Oct 21, 2017 9:44 pm

...... I haven't driven :? :?

It's on the drive where it's been for almost a month... hence why I made the point about it being unsafe... and hence why I said when I get my mirrors back it's the next job... because then I will be able to drive it.

Is there something in the water today ??
Last edited by thanatu55 on Sat Oct 21, 2017 10:21 pm, edited 3 times in total.
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Cdv removal clutch delay valve OMG!

Post by Digidick » Sat Oct 21, 2017 9:47 pm

Did my CDV today, great mod and a piece of piss to do.

If anyone needs help doing it in the Derby area give me a shout.
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Cdv removal clutch delay valve OMG!

Post by MACK » Sat Oct 21, 2017 11:28 pm

jamie_z4 wrote: Sat Oct 21, 2017 3:47 pm So today had the cdv removed from both my z4 and e46 320cd. All I can say is wow! Ive been driving bmws for ten years and always struggle with setting off and 1st to second as the car kangaroos without perfect clutch operation.

With the valve removed - engagement is instant! It's like driving a differnt car! So smooth and refined especially on the e46 as it used to take loads of revs to set off now it just sets off by letting the clutch out.

Anyway just thought I'd share and get in touch with Mike (Ducklakeview) who can take care of this for you in around 10 minutes and for a few beer tokens!

IMG_20171021_152434_027.jpg
Holy s**t how did you get through 10 years of driving BMW manuals, especially all the cars you have owned and not get around to doing this!🤣
You must be kicking yourself!
Unfortunately now BMW has incorporated the clutch delay device into the clutch master cylinder on most F series manuals making it virtually impossible to do this now. SPOIL SPORTS!
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Cdv removal clutch delay valve OMG!

Post by Ducklakeview » Sat Oct 21, 2017 11:50 pm

thanatu55 wrote: Sat Oct 21, 2017 9:44 pm ...... I haven't driven :? :?

It's on the drive where it's been for almost a month... hence why I made the point about it being unsafe... and hence why I said when I get my mirrors back it's the next job... because then I will be able to drive it.

Is there something in the water today ??
Ignore him, we all do!

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Cdv removal clutch delay valve OMG!

Post by MrPT » Sun Oct 22, 2017 11:06 pm

jamie_z4 wrote: Sat Oct 21, 2017 5:04 pm
MrPT wrote: Sat Oct 21, 2017 5:02 pm Nice. Massive difference on the non-M. Bit like runflats really - annoying the car came from the factory with them!
Interesting... Is it not that noticeable on the m then MrPT?
Haven't done it. Doesn't feel like it needs it - in fact, punching the clutch in and out fast is probably the best way of getting a smooth 1st to 2nd shift.

Didn't feel like that was an option in my last zed. You had to learn to drive around the fact that there was a bit of a delay in clutch engagement.
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Cdv removal clutch delay valve OMG!

Post by BoWzER » Sun Oct 22, 2017 11:09 pm

Yep, top lad that DLV.

Clutch delay valve was the first thing i removed after reading so many posts about it, would 100% recommend this to anyone who hasn't already removed theirs.
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