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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 09-14-2006, 08:01 PM
RiceRiceBaby RiceRiceBaby is offline
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who has modified their clutch delay valve?

What is your opinion of the mod? It seems like a cheap and easy mod. Is it worth it? Is it what Zeckhausen claims? Thanks.

rrb.
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  #2  
Old 09-14-2006, 08:19 PM
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skydryice skydryice is offline
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I have the Zeck Mod CDV. I support the replacement. I does make a difference.
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  #3  
Old 09-14-2006, 08:51 PM
NFS NFS is offline
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Of all the mods I have done to my 540I, the CDV has been the best mod I have done so far.
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  #4  
Old 09-14-2006, 08:56 PM
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Mister Chow Mister Chow is offline
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It's an easy mod and it improves the entire experience. AND it's relativily cheap as car stuff goes.
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  #5  
Old 09-14-2006, 08:57 PM
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kc5 kc5 is offline
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Do a search. Almost everyone here with a manual tranny has done it. Big improvement.
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  #6  
Old 09-14-2006, 09:02 PM
c1540 c1540 is offline
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if your car is out of warranty you can just remove the cdv. the hose is a direct fit.
well worth the few minutes it takes to do this.
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  #7  
Old 09-14-2006, 09:07 PM
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Touring Dude Touring Dude is offline
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Do It!!!!!

Quote:
Originally Posted by RiceRiceBaby View Post
What is your opinion of the mod? It seems like a cheap and easy mod. Is it worth it? Is it what Zeckhausen claims? Thanks.

rrb.
I did mine myself using the Zeckhausen instructions. I bought a new one at the dealer and installation was a Piece of cake (after I realized that you have to replace the seat for the hard line (orifice) after you pop the innards out) And YES the clutch feels like it is supposed to now, Had to re-learn how to shift now that the clutch wierdness is gone!!! Hard to explain, but the clutch just never felt "right".....
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  #8  
Old 09-14-2006, 09:10 PM
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Quote:
Originally Posted by c1540 View Post
if your car is out of warranty you can just remove the cdv. the hose is a direct fit.
well worth the few minutes it takes to do this.
That didn't work on mine as the threaded piece on the hard line bottomed in the slave cylinder before it seated and sealed the hard line.
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  #9  
Old 09-14-2006, 09:20 PM
RiceRiceBaby RiceRiceBaby is offline
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yay!

ha! just what i was hoping to find out. thanks, everyone for your replies. looks like another mod this weekend...

rrb.
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  #10  
Old 09-14-2006, 09:24 PM
NORE NORE is offline
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Can't wait to get my CDV off.
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  #11  
Old 09-14-2006, 09:29 PM
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Mister Chow Mister Chow is offline
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Word is the next best mod is a M5 rear sway bar.
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  #12  
Old 09-14-2006, 09:44 PM
RiceRiceBaby RiceRiceBaby is offline
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done it. even easier mod. i think it's worth it.

rrb.
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  #13  
Old 09-14-2006, 09:51 PM
Eric in SD Eric in SD is offline
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Great mod. Must do. Clamp the rubber line before you remove the CDV or you will get doused with brake fluid (like I did!). Don't use vise grips though, or you can tear the rubber.

Franka swears this mod is hardly noticeable, but the rest of us love it.
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  #14  
Old 09-15-2006, 02:46 PM
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had it done and love it!
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  #15  
Old 09-15-2006, 03:45 PM
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Fulltone74 Fulltone74 is offline
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What is this so-called "clutch weirdness" that people talk about.

I drove an M5 recently and the pedal was relatively firm with a nice grippy feeling clutch -- and it started to engage quickly with the pedal about an inch off the floor. That is what "normal" is -- correct ??

I drove another 540i with an aftermarket clutch and the pedal was relatively soft -- and the clutch grip didn't seem that high -- and the engagement started kind of high off the floor -- Now is this considered simply a soft clutch or a "weird" feeling one?


Then I once drove an E36 M3. Now that one felt strange to me... The engagement started close to the floor, but I had to let almost all the way up on the pedal to be fully engaged. And I didn't get any of the usual slipping clutch feel/sound. It almost felt like I was working a torque converter in an automatic -- even though I was surely driving a manual trans. Is it THIS kind of clutch feel that people are saying is "weird" on the 540i?
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  #16  
Old 09-15-2006, 04:09 PM
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Quote:
Originally Posted by NORE View Post
Can't wait to get my CDV off.
Uhh.....is it just me or does that sound kinky?
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  #17  
Old 09-15-2006, 04:32 PM
cr00klyn718 cr00klyn718 is offline
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One question on the CDV removal.

Do I need to buy this from zecks?

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  #18  
Old 09-15-2006, 05:30 PM
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LA525iT LA525iT is offline
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Quote:
Originally Posted by kc5 View Post
Do a search. Almost everyone here with a manual tranny has done it. Big improvement.
This owner has not deleted the CDV from either of his BMWs. I dont have any problem driving my car smoothly with the CDV. And if it prevents driveline wear at the expense of premature clutch wear then fine, clutches are relatively cheap to replace. I dont have any clutch slip at 40,000 miles and I know I've read posts here about E39 owners with CDV deletes replacing worn clutches earlier than 40k. Of course, they probably have more wear because they dont drive a slow torqueless pig like a 525iT.
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  #19  
Old 09-15-2006, 06:20 PM
tsaros tsaros is offline
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Quote:
Originally Posted by cr00klyn718 View Post
One question on the CDV removal.

Do I need to buy this from zecks?


According to some you can fit the tube without the cdv, i bought a new cdv to avoid any additional bending to the tube.
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My 540iM -6
E39 M5 OEM Wheels and Cross Spoke Composite II 42 18", CDV Deleted, Eisenmann Race 2x76mm,Rogue Engineering Short Shifter (+WSR), Rogue Engineering Camber plates, Stoptech SS Brake lines, Axxis Ultimate, Bilstein PSS9, M60 intake. (Sold)

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H&R+Bilstein Sprint, E39 M5 OEM Wheels 245+275, CDV Deleted, M50 intake manifold, BBTB (Sold 2005-07-15)
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  #20  
Old 09-16-2006, 07:55 AM
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dmako dmako is offline
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Same here, bought one from Zecks's. Should be going in next week I hope.
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Best mod to date: removed seat clip.
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  #21  
Old 09-16-2006, 08:59 AM
Jim II Jim II is offline
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Don't wait another minute

The difference is amazing. I was thinking about getting rid of my 540. I was a little disapointed in how it drove. After driving an A8 for the last 3 years I longed for it back. The reason I got the 5 was so I could finally shift on my own again. But it really wasn't that great. So, I got rid of my noisy tires, did the CDV delete and took as much of the negative camber out of the back so my tires could last through next summer. Now I love the car! It is hard to explain the difference the cdv makes to your shifting. It makes you want to shift instead of having to shift.
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  #22  
Old 09-16-2006, 09:00 PM
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Mein Auto: 2000 e39 540i6 Sport
CDV actually INCREASES the wear on the clutch as the clutch slips more with CDV.

There are a few things EVERY manual tranny in e39 needs:

1. CDV remove
2. Short shifter
3. Clutch stop
4. Tranny oil change

each one of the above makes a world of difference in your driving experience!




Quote:
Originally Posted by LA525iT View Post
This owner has not deleted the CDV from either of his BMWs. I dont have any problem driving my car smoothly with the CDV. And if it prevents driveline wear at the expense of premature clutch wear then fine, clutches are relatively cheap to replace. I dont have any clutch slip at 40,000 miles and I know I've read posts here about E39 owners with CDV deletes replacing worn clutches earlier than 40k. Of course, they probably have more wear because they dont drive a slow torqueless pig like a 525iT.
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Done: CDV Remove, Rogue Short Shifter, Clutch Stop, Chip, Resonator remove, Supersprint exhaust, AE clear corner headlights, CELIS-LOOK tail lights.

In plans - not in any particular order:
H&R+KONI, M5 swaybars, CAI, SSR-GR3 19" rims, stainless still brake lines, drilled rotors, xenon interrior lights, illuminated shift knob, ACS pedals, ESS or some other supercharger.
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  #23  
Old 09-16-2006, 09:23 PM
IanBMW IanBMW is offline
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Clutch stop BLOWS if you hit stop and go traffic.
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  #24  
Old 09-29-2006, 12:18 PM
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dmako dmako is offline
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Add me to the list of deleting the CDV, well I went with the Zeckhausen CDV. Just getting back into manual shifting with my 528i and I like it.
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1999 BMW 528i sports pkg. 5-speed, rear lip spoiler, removed phone, Aspheric mirror, new M5 dead pedal, home made clutch stop, removed intake muffler, clear side and rear lights, Nein CDV, full cooling system overall, Beisan VANOS seals.
Best mod to date: removed seat clip.
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  #25  
Old 09-29-2006, 02:38 PM
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chivas chivas is offline
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i just took the whole god damn thing out and didn't bother with the dummy filler.
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