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View Full Version : Clutch Delay Valve (CDV) Who has it?


328is_Perf
09-20-2004, 05:12 PM
after months of wondering why my clutch seems to slip from hard 2nd to 3rd shifts i found an answer... CDV... my clutch is nice and strong no slippage ....


here is some info...

http://www.zeckhausen.com/CDV.htm#Theory%20of%20Operation




well i recently took the 328is to the 1/8th mile ... 1/4 was closed ... man the clutch just wouldn't GRIP!!!! i was running just OK ... but it sucked ... i let it cool down a little and went again and after 4 races it started doing that crap again!!! it was horrible ... well at least its saving my transmission ...

as soon as i got on the road ... everything was being fine ... powershifts even worked well .. but on the track ... not ... although it let me launch at 4000 RPM.. no wheel spin

another proof BMW's are not drag cars...


but at least i know my clutch doesn't slip because if it being bad .. i feel better now..

thinair
09-20-2004, 06:54 PM
m cars (for e36's anyway), the 328's don't have it, I've checked already.

Rush
09-20-2004, 09:27 PM
I got Dave Z's CDV ... smoother shifting ... would definitely recommend it on a 5er (not sure about 3-series)

328is_Perf
09-21-2004, 08:47 PM
is the site lying??? ...

they even have pictures of the E36 3 series one ...

thinair
09-21-2004, 09:46 PM
Hmm, now you're going to make me check again aren't you....:P
Maybe I didn't look close enough. It would explain my glazed clutch (before I swapped for the M5 clutch)

325isRED
09-21-2004, 09:51 PM
if you read down, only the E36 323i, 328i of certain years have this valve

328is_Perf
09-21-2004, 10:32 PM
yea ... thats what i got 328is 5 speed manual 96-99... and man my 1/8th mile track experience could only be explained by CDV... i'll pull a video of it messing up bad (i pulled 15 seconds)... and show y'all (yes i'm texan)... it was horrible!!!