Materials to Maintain Your ZHP IIIII Hand Protection IIIII Tools to Maintain Your ZHP
Page 1 of 5 123 ... LastLast
Results 1 to 10 of 44
  1. #1

    Clutch Delay Valve Removal doityourself

    Am new - 1st post, searched to see if this was here and couldnt find it. This was my experience w/ my 05 ZHP.

    First it took a bit of research to see if it was actually still there. The web has quite a few posts/threads about the CDV removal but the actual valve looks quite different among diff models of BMWs -light,dark metal or plastic.

    When both previous owners of my ZHP responded definitively they had not removed it, I felt confident to at least take the area apart. I really didnt snag a pic until I'd started to disconnect. It only took several turns and brake fluid was everywhere. You can see the CDV is supported in the metal bracket here between the rubber hose and the metal pipes. This area is on the drives side of the tranny just down from the clutch bleeder valve.



    Once taken apart w/ the 17mm and the 11mm wrenches. I could tell for sure the dreaded CDV was still there.


    Next take 2 17mm wrenches and remove the CDV. For some odd reason, I didnt follow other write ups to plug the line and stop the dripping of the brake fluid. This would later come back to haunt me.


    Here's what mine looked like once removed


    Hard to appreciate but there is only a tiny pin hole for clutch fluid to flow through


    The tools. Shop light, (2) 17mm wrenches, a 11mm and a 7 mm wrench. Not pic'd a pressure bleeder.


    Once CDV removed, screw ends back together 11mm + 17mm & tighten. Then proceed to bleed the system. I chose a pressure bleeder as my only helpers were the mosquitos.
    Here's the clutch bleeder valve. Its a 7mm and wayyyy up in there. I loosened it w/ the wrench then opened it w/ my hand.

    It was at this point that I got to bleed it 5 times completely exhausting the pressure in my pressure bleeder which had been pumped up to 10 and refill my brake reservoir w/ DOT 4 ATE gold brake fluid. Why 5 times? The first 3 nothing but air came out

    When I finally got a solid stream brake fluid w/o bubbles, I tightened the valve, put the cap back on, checked for leaks while still under pressure. Then put car back down on the ground and was rather pleased w/ myself until I started the car and stepped on clutch. It felt like it had very little spring in it and I couldnt even get the car in gear. :barf: 30+ pumps and I was able to finally get it in gear. Went for a test drive and clutch engagement was just off floor and almost stalled it. Way diff than before and in a bad way. Fortunately driving it and shifting a ton brought it back to its old engagement points and feel. After that panic was over I was able to finally appreciate that the nagging delay in shifting was gone.

  2. #2
    Join Date
    Jan 1970
    Location
    Liberty Township, OH
    Posts
    37,935
    Excellent. Thanks for pitching in.

    HTC Thunderbolt+TT
    Call Me Dane l 2/2004 330i ZHP l 18x8 ET45 BBS CK's wrapped with Michelin Pilot Sport AS3+ @ 245-40-18 l KW V1 Coilovers in front l KW V1 springs w/ Bilstein B8 dampeners in rear l BMW Performance Rotors l UUC StrutBarbarian l Racing Dynamics Rear Strut Bar l Jim Conforti Shark Injector l Light Birch Interior Trim l Bimmian Celly Mount l M3 Trunk Mat l l e90 Performance E-Brake & Shift Knob l M3 Tri-Stitched Boots l AL Headlight Retrofit with ZKW Lenses l CobyWheel Wrap w/M3 Stitching l LCM sw 4.5 triple blink and rear fogs l Maple Interior Trim

  3. #3
    Join Date
    Jan 1970
    Posts
    15,433
    Agree. New and already pitching in. Thanks!


    Sent from my iPhone using Tapatalk

  4. #4
    Join Date
    Jul 2011
    Location
    Houston, TX
    Posts
    2,378
    nice write up, doing this on wednesday!

  5. #5
    Join Date
    Mar 2011
    Location
    Denver, CO
    Posts
    516
    Thanks for the writeup.

  6. #6
    Join Date
    Apr 2011
    Location
    Dallas
    Posts
    822
    Quote Originally Posted by webster View Post
    nice write up, doing this on wednesday!
    Totally worth it. Neither of my E46's had one but my E39 did and removal is the best $20 you'll ever spend on a car.

    FWIW, BavAuto sells the Zeckhausen replacement part, which is a drilled-out CDV. More info on Zeckhausen's site.

  7. #7
    Quote Originally Posted by aurelius View Post
    Totally worth it. Neither of my E46's had one but my E39 did and removal is the best $20 you'll ever spend on a car.

    FWIW, BavAuto sells the Zeckhausen replacement part, which is a drilled-out CDV. More info on Zeckhausen's site.
    I just removed it. The two ends just screw back together. I didnt need a replacement part. I suppose if it was still under warranty I would have gotten the Z's replacement so the dealer couldnt tell I'd done it. So my mod cost $0 !! Apart from some brake fluid. I suspect if you clamp the flexible hose and plug the metal one you might not even need any until your q 2 year flush.

  8. #8
    Join Date
    Jul 2011
    Location
    Houston, TX
    Posts
    2,378
    yeah i bought the modified valve from zeckenhausen, having it installed along with new cabin/air/fuel filters on weds. might do an alignment as well, i noticed the car pulling to the right on the freeway the other day...

  9. #9
    Join Date
    Jan 2011
    Location
    Mass
    Posts
    454
    if you are into any racing this needs to be done!

    2005 BMW 330i ZHP
    2004 BMW 330Ci ZHP A DIY Turbocharger Project!

    My site: www.E46Turbo330Ci.com
    http://www.zhpmafia.com/forums/image.php?type=sigpic&userid=545&dateline=1337626488

  10. #10
    Join Date
    Mar 2011
    Location
    West Palm
    Posts
    428
    i have been wanting to do this, but havent had the time
    thanks for pitching in, great pics and DIY
    THE ANGRY TOMATO

Page 1 of 5 123 ... LastLast

Similar Threads

  1. Replies: 23
    Last Post: 10-24-2019, 10:14 AM
  2. Replies: 35
    Last Post: 05-15-2015, 07:19 AM
  3. DISA valve upgrade rebuild doityourself
    By TheUDM89 in forum Maintenance
    Replies: 14
    Last Post: 08-21-2013, 04:22 PM
  4. Replies: 40
    Last Post: 11-08-2012, 10:43 AM
  5. Replies: 5
    Last Post: 01-23-2012, 11:13 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •