How to modify your CDV (Clutch Delay Valve)
- Thread starter srhutch
- Start date
The CDV (Clutch Delay Valve) mod removed the delay valve so that when you take your foot of the clutch the clutch is released at the rate you determine and not the rate of the valve.
No delay is applied when you put your foot on the clutch but it is when you take your foor off, it is there for people who cannot drive properly and to reduce drivetrain shock, but it will increase clutch wear and make changing gear smoothly very difficult.
It really is one of the best and cheapest mods you can do.
No delay is applied when you put your foot on the clutch but it is when you take your foor off, it is there for people who cannot drive properly and to reduce drivetrain shock, but it will increase clutch wear and make changing gear smoothly very difficult.
It really is one of the best and cheapest mods you can do.
Does this mod apply to SMG models? I realise I don't have a clutch, but I have no idea if there's something doing a similar job in its stead within the SMG system.
And yes, I am mechanically retarded, so please excuse the stupidity of this question. I really do wish I knew the slightest about car mechanics, but I've no idea how to start.
And yes, I am mechanically retarded, so please excuse the stupidity of this question. I really do wish I knew the slightest about car mechanics, but I've no idea how to start.
Liverpool
You can either take that valve off completely and reconnect the pipe directly - although some say it might make the pipe too tight - or you can remove the insert (as shown in the picture you posted) and refit it.
I can't find the instructions for the Z4, but they're similar on most models (although you've got to remove the panels under the engine/gearbox to get to the valve)
These instructions might help - http://www.bmw325i.net/cdv_removal.shtml - although it might take longer to read them than to do the job
I can't find the instructions for the Z4, but they're similar on most models (although you've got to remove the panels under the engine/gearbox to get to the valve)
These instructions might help - http://www.bmw325i.net/cdv_removal.shtml - although it might take longer to read them than to do the job
flimper said:
I got it fitted at a garage near Brand Hatch. They're BMW specialists and come highly recommended from a friend with a CSL. ETA Motorsport, West Kingsdown (Right opposite the Texaco garage near the main entrance to Brands.) 01474 850505. They're an excellent bunch of guys, highly recommended.
mmm-five said:You can either take that valve off completely and reconnect the pipe directly - although some say it might make the pipe too tight - or you can remove the insert (as shown in the picture you posted) and refit it.
I can't find the instructions for the Z4, but they're similar on most models (although you've got to remove the panels under the engine/gearbox to get to the valve)
These instructions might help - http://www.bmw325i.net/cdv_removal.shtml - although it might take longer to read them than to do the job
Thanks, good guide.
I'm gunna have to give this a go, since I've read this post the clutch action has been annoying me! A job for the weekend me thinks.
mmm-five said:You can either take that valve off completely and reconnect the pipe directly - although some say it might make the pipe too tight - or you can remove the insert (as shown in the picture you posted) and refit it.
I can't find the instructions for the Z4, but they're similar on most models (although you've got to remove the panels under the engine/gearbox to get to the valve)
These instructions might help - http://www.bmw325i.net/cdv_removal.shtml - although it might take longer to read them than to do the job
As per step 15 in the guide, it referres to a minor bleed. Whats the difference? I don't fancy doing a full bleed of the fluid as it was changed not that long ago.
they must have changed the design to more securely house the insert (A) - Ive just tried on a new valve I received yesterday - as you laziomonster drill bit just pushed right the way through leaving it probably impossible to remove the insert...
oh and I was holding the valve in my fingers, so now have a cut thumb
Ive lived with it for 3 years... might just have to live with it for a few more!
oh and I was holding the valve in my fingers, so now have a cut thumb
Ive lived with it for 3 years... might just have to live with it for a few more!