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Remove CDV

How-To articles are in here.
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Nictrix
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Re: Remove CDV

Post by Nictrix » Mon Aug 18, 2014 10:23 pm

Excellent bit of info, had this removed yesterday.
E89 2014 35i M Sport Black with Black leather :)

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RickRob
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Re: Remove CDV

Post by RickRob » Mon Aug 18, 2014 10:44 pm

I echo Steve G's comments. I thought it was just me making a mess of going from 1st to 2nd. :)
///M Roadster. 2007 Black/Black. Rear spoiler, whippy aerial, mud flaps and gimp-style wind deflector! :)

csquire4
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Remove CDV

Post by csquire4 » Fri Oct 21, 2016 10:40 pm

I've had CDV removed and changed gearbox oil to Redline MTL and Redlline ATF4 in a 50/50 mix as recommended by Opie Oils.

Vast improvement, do it, you won't regret it. Smoother, easier and nicer gear change, my mechanic who is into motorsport (Fords) was sceptical but agreed afterwards.
2004 3.0i, manual, toledo blue

Zziipp
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Remove CDV

Post by Zziipp » Thu Feb 16, 2017 1:55 am

I'm glad I ran across this topic. Interested in doing anything to improve driving performance. New to the group and I'm really enjoying having this form to learn from. My 03 Z4 2.5 has become the new love of my life. You know you got it bad when you find excuses just to get in the car and drive anywhere. :thumbsup:
03 2.5 E85, Reiger Front bumper,side skirts,rear defuser, Angel Eye Headlights, drilled & slotted rotors, new 18" tires & wheels, rear spoiler

Simon Blythe

Remove CDV

Post by Simon Blythe » Wed Mar 22, 2017 9:16 am

Does anyone have a picture of the e85 CDV please.

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Silverzedtom
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Remove CDV

Post by Silverzedtom » Mon Mar 27, 2017 7:55 pm

Simon Blythe wrote:Does anyone have a picture of the e85 CDV please.
I'm sure someone will have one knocking around they can post up for you... if not I'm planning to take mine out on the weekend of the 8th/9th April so can post one up for you. :thumbsup:
E85 2.5si
F55 Cooper S

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sw4nny
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Remove CDV

Post by sw4nny » Mon Mar 27, 2017 9:02 pm

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CDV (Clutch Delay Valve) _ zroadster_com - BMW Z1 Z2 Z3 Z4 Z8 M MINI ___.jpg
CDV (Clutch Delay Valve) _ zroadster_com - BMW Z1 Z2 Z3 Z4 Z8 M MINI ___.jpg (39.32 KiB) Viewed 5942 times
:thumbsup:
E85 3.oi titan silver,Maldives blue E85 3.0i gone but not forgotten

Simon Blythe

Remove CDV

Post by Simon Blythe » Tue Mar 28, 2017 10:56 am

Removed last night and at first wasn't too impressed as the car jumped forward when I raised the clutch. After a few minutes though I realised why people do it - you can essentially "feel" the clutch more now so you can launch it better.
I literally clamp the flexi hose, removed the CDV, reconnected it and drove away :D

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Boris
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Remove CDV

Post by Boris » Sun Oct 22, 2017 4:36 pm

Someone has cottoned onto this I've just seen this for sale https://www.zeckhausen.com/catalog/prod ... cts_id=273

$120 :o

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Ducklakeview
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Remove CDV

Post by Ducklakeview » Sun Oct 22, 2017 4:58 pm

Machine monkey wrote: Fri Apr 04, 2014 1:56 pm Ok i dont have a full grasp so this might not be 100% correct.

But my understanding the CDV is to prevent harsh and sudden shocks causing damage to the DMF. From surges of power from say the clutch being drooped or poor gear changes. Its sole purpose is to protect the DMF from shock.
Trouble is Mat, is slows down engagement of the clutch, masking the bite point and causing slippage that wears the clutch prematurely. Also when you are going for it, it hinders smooth changes.

Mike

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srhutch
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Remove CDV

Post by srhutch » Sun Oct 22, 2017 5:46 pm

Ducklakeview wrote: Sun Oct 22, 2017 4:58 pm
Machine monkey wrote: Fri Apr 04, 2014 1:56 pm Ok i dont have a full grasp so this might not be 100% correct.

But my understanding the CDV is to prevent harsh and sudden shocks causing damage to the DMF. From surges of power from say the clutch being drooped or poor gear changes. Its sole purpose is to protect the DMF from shock.
Trouble is Mat, is slows down engagement of the clutch, masking the bite point and causing slippage that wears the clutch prematurely. Also when you are going for it, it hinders smooth changes.

Mike
Your quoting Matt from over three years ago :-?
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Smartbear
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Remove CDV

Post by Smartbear » Sun Oct 22, 2017 6:26 pm

Boris wrote: Sun Oct 22, 2017 4:36 pm Someone has cottoned onto this I've just seen this for sale https://www.zeckhausen.com/catalog/prod ... cts_id=273

$120 :o
I think that part is unnecessary as you can just discard the cdv & reconnect the hydraulic pipe without it?
Rob
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e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold

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Ducklakeview
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Remove CDV

Post by Ducklakeview » Sun Oct 22, 2017 6:57 pm

Smartbear wrote: Sun Oct 22, 2017 6:26 pm
Boris wrote: Sun Oct 22, 2017 4:36 pm Someone has cottoned onto this I've just seen this for sale https://www.zeckhausen.com/catalog/prod ... cts_id=273

$120 :o
I think that part is unnecessary as you can just discard the cdv & reconnect the hydraulic pipe without it?
Rob
Yup, undo it and bin it!

Mike

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Ducklakeview
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Remove CDV

Post by Ducklakeview » Sun Oct 22, 2017 6:58 pm

srhutch wrote: Sun Oct 22, 2017 5:46 pm
Ducklakeview wrote: Sun Oct 22, 2017 4:58 pm
Machine monkey wrote: Fri Apr 04, 2014 1:56 pm Ok i dont have a full grasp so this might not be 100% correct.

But my understanding the CDV is to prevent harsh and sudden shocks causing damage to the DMF. From surges of power from say the clutch being drooped or poor gear changes. Its sole purpose is to protect the DMF from shock.
Trouble is Mat, is slows down engagement of the clutch, masking the bite point and causing slippage that wears the clutch prematurely. Also when you are going for it, it hinders smooth changes.

Mike
Your quoting Matt from over three years ago :-?
Lol didn't realise the big gap before someone pushed again today.

Mike

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Machine monkey
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Remove CDV

Post by Machine monkey » Sun Oct 22, 2017 8:53 pm

Yep ditch the CDV and the sh***y dual mass go single mass if you want clutch feel.
My little blue zed is in lots of bits. With lots of things started and not many finished! I may have found the limits of my time and ability!!

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