320cdw Posted April 28, 2014 Report Share Posted April 28, 2014 Hi all, Just looking through the various threads about the C.D.V, the question I would like to ask is... The valve itself, is it just a plain through hole? or is there something else going on in there? All of the pictures lead me to think it is just a plain fitting with a small hole in it and all of the "modded" parts have just got a larger hole through them - Could I just drill the hole out? I don't mean a bodge job drill, I mean putting it in a machine at work and making a pukka job of it, but is it possible? Any help greatly appreciated as always... Thanks D Link to comment Share on other sites More sharing options...
mjn Posted April 29, 2014 Report Share Posted April 29, 2014 Yes, you can drill it through. Just ensure you remove all the metal fragments. Link to comment Share on other sites More sharing options...
mit Posted April 29, 2014 Report Share Posted April 29, 2014 Why drill it? Just remove the whole thing! Have to say I didn't notice much difference. I think it only causes problems if you don't drive smoothly in the first place. DonB 1 Link to comment Share on other sites More sharing options...
Pauly123 Posted April 29, 2014 Report Share Posted April 29, 2014 I am a tosspot so please forgive me but what is CDV Link to comment Share on other sites More sharing options...
DonB Posted April 29, 2014 Report Share Posted April 29, 2014 It's a clutch delay valve...as Mit says just remove it altogether. Mechanic took mine out a while back while doing other jobs..not sure I noticed a huge difference though Link to comment Share on other sites More sharing options...
Pauly123 Posted April 29, 2014 Report Share Posted April 29, 2014 Thanks donb what is its purpose and is there any gain in removing? Link to comment Share on other sites More sharing options...
DonB Posted April 29, 2014 Report Share Posted April 29, 2014 I think it's there to protect the gearbox or something, not sure In theory removing it I think will make gear changes and setting off in first gear to second gear smoother. Link to comment Share on other sites More sharing options...
simonlpearce Posted April 29, 2014 Report Share Posted April 29, 2014 It was put there because yanks can't drive stick shifts so burn out the clutch all the time. It basically delays the clutch from engaging too quickly. As us brits know how to drive, its surplus to requirements. Pauly123, autosri, bungers and 3 others 6 Link to comment Share on other sites More sharing options...
320cdw Posted April 29, 2014 Author Report Share Posted April 29, 2014 It was put there because yanks can't drive stick shifts so burn out the clutch all the time. It basically delays the clutch from engaging too quickly. As us brits know how to drive, its surplus to requirements. That is the MOST perfect statement ever composed, give this man a medal!!! steviebee 1 Link to comment Share on other sites More sharing options...
simonlpearce Posted April 29, 2014 Report Share Posted April 29, 2014 (edited) It was put there because yanks can't drive stick shifts so burn out the clutch all the time. It basically delays the clutch from engaging too quickly. As us brits know how to drive, its surplus to requirements. That is the MOST perfect statement ever composed, give this man a medal!!! They didn't make me a mod for no reason, i have the odd bit of useful info, lol. Edited April 29, 2014 by simonlpearce Link to comment Share on other sites More sharing options...
Pauly123 Posted April 29, 2014 Report Share Posted April 29, 2014 Agreed Simon your info can be pretty damn good Link to comment Share on other sites More sharing options...
mit Posted April 29, 2014 Report Share Posted April 29, 2014 It was put there because yanks can't drive stick shifts so burn out the clutch all the time. It basically delays the clutch from engaging too quickly. As us brits know how to drive, its surplus to requirements. Yanks never drive 'stick' so it's not needed for them. The majority of the market for manual gearboxes is Europe, and Britain is BMW's 3rd largest market (possibly 4th now, can't remember if China overtook yet) so actually it's for us. And ze Germanz. Link to comment Share on other sites More sharing options...
