Done that before its easier to get the one man bleed kit lol
You still need a short length of clear hose so you can see if all the air has gone
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Re: How to modify your CDV (Clutch Delay Valve)
Posted: Mon Feb 04, 2013 5:51 pm
by Bad_Pritt
is there no other way to test if all the air is out (without breaking the car)?
Re: How to modify your CDV (Clutch Delay Valve)
Posted: Wed Feb 06, 2013 2:05 pm
by jttaylor
Great thread, cant believe ive come across it. I too have been practicing smooth changing the gears in my Z4 and still after 2 weeks are struggling to get it nice and smooth. Im going to contact that Pete in Telford (Autotech) I think and get me booked in for this CDV removal and get him to code the remote roof at the same time
Re: How to modify your CDV (Clutch Delay Valve)
Posted: Fri Jun 28, 2013 1:50 pm
by Sloth
Holy crap! How much have people been quotes for a CDV from their dealer? I noted in post 1 that there was a quote for £8 plus vat for srhutch. I just got quoted by a really reputable dealer for £50 odd quid! Hutch could you shed any light? Cheers all!
Re: How to modify your CDV (Clutch Delay Valve)
Posted: Fri Jun 28, 2013 10:01 pm
by srhutch
Was the price from my local main dealer for a standard Z4 CDV
Re: How to modify your CDV (Clutch Delay Valve)
Posted: Fri Nov 01, 2013 2:08 pm
by LukeMace
So... This is now on the list of to do's in a lunch break next week!!! Or if i get the chance today even
Re: How to modify your CDV (Clutch Delay Valve)
Posted: Fri Nov 01, 2013 9:13 pm
by Adamski
Well worth doing. Nosa (former forum member) did mine. One of the best mods you can do with a non M.
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Re: How to modify your CDV (Clutch Delay Valve)
Posted: Fri Nov 08, 2013 12:37 am
by Luke the spark
Anyone got a picture of the bleed nipple? So if I step on the clutch a few times until I get a dribble of oil out of the nipple prsumably that's the system bleed?
This is the only bit I'm not sure on
Re: How to modify your CDV (Clutch Delay Valve)
Posted: Thu Nov 14, 2013 4:27 pm
by LukeMace
I just found this on youtube which gave a little more info on where it is actually located and how to remove it...
Re: How to modify your CDV (Clutch Delay Valve)
Posted: Thu Nov 14, 2013 5:06 pm
by sk93
just as a FYI, I believe the part number is 21526755892
and currently the online price is £62... ouch indeedy!
definitely looks like they've been steadily increasing the price
Re: How to modify your CDV (Clutch Delay Valve)
Posted: Fri Nov 15, 2013 8:12 am
by Adamski
Just take the whole valve off. Simples
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Re: How to modify your CDV (Clutch Delay Valve)
Posted: Sat Apr 12, 2014 2:41 pm
by mariojoshi
I'm another convert - being new to the Z4, I had no idea why 1st to 2nd was quite so notchy... and why the car wasn't too co-operative changing down the box... but this has fixed it completely!
I went for the straight removal option - no issues with hose reach on a 3.0L engine - but bleeding was an absolute pain in the rear due to the location of the bleed nipple. Make sure you've got a small enough spanner before you start - I think it must be a 6mm? (I had to use a tiny adjustable!)
Josh
Re: How to modify your CDV (Clutch Delay Valve)
Posted: Tue Aug 26, 2014 6:50 pm
by Beedub
I added a braided hose while I was in their removing the Valve. I notice a small difference but nothing massive imo .
How to modify your CDV (Clutch Delay Valve)
Posted: Wed Jun 29, 2016 5:11 pm
by brainstorm
Im maby planing to remove mine CDV but im a bit questioning...
BMW have put it there for a reason, what reason is that?
Dont think they put it there to make the drive experiance worse!
Will removing the CDV have Any negative effekt to the Clutch or the gearbox in the long run?
How to modify your CDV (Clutch Delay Valve)
Posted: Wed Jun 29, 2016 6:44 pm
by markplant
brainstorm wrote:Im maby planing to remove mine CDV but im a bit questioning...
BMW have put it there for a reason, what reason is that?
Dont think they put it there to make the drive experiance worse!
Will removing the CDV have Any negative effekt to the Clutch or the gearbox in the long run?
Iirc it's to save the gearbox/clutch if you keep dumping the clutch
