CDV modification and brake fluid change

Punko · 01-21-2012, 10:33 AM

Is the best time to complete the CDV modification when the brake fluid is being changed?

RandysV10 · 01-21-2012, 12:07 PM

Yes as you will also have to bleed the clutch.

msh441 · 01-22-2012, 04:21 PM

Curious: what does bleeding the clutch have to do with changing brake fluid? Why is is significantly easier to do them at the same time? Not familiar with the specific procedure on the Z4, but I'm curious, as I do plan on doing the CDV delete this spring.

pungo · 01-22-2012, 05:18 PM

Quote:

Originally Posted by msh441

Curious: what does bleeding the clutch have to do with changing brake fluid? Why is is significantly easier to do them at the same time? Not familiar with the specific procedure on the Z4, but I'm curious, as I do plan on doing the CDV delete this spring.

My guess is the brake fluid reservoir doubles as the clutch fluid reservoir so, when bleeding the clutch you'll have to top off the brake reservoir.

RandysV10 · 01-22-2012, 05:25 PM

Quote:

Originally Posted by msh441

Curious: what does bleeding the clutch have to do with changing brake fluid? Why is is significantly easier to do them at the same time? Not familiar with the specific procedure on the Z4, but I'm curious, as I do plan on doing the CDV delete this spring.

The clutch is pressurized utilizing the brake fluid reservoir, it has a bleed nipple the same as the brakes, just a little hard to reach. If you plan on flushing your system then you want to flush/bleed that out as well. Search is your friend as there are a lot of write ups about this. I did the CDV delete and changed out to SS brake lines at the same time. Figured since I had the car up on the Jack stands I might as well get it all done.

01-21-2012, 10:33 AM	#1
Punko Second Lieutenant 20 Rep 250 Posts Drives: 07 Z4 M Coupe Join Date: Feb 2011 Location: Hamilton, ON iTrader: (2)	CDV modification and brake fluid change Is the best time to complete the CDV modification when the brake fluid is being changed?
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01-21-2012, 12:07 PM	#2
RandysV10 MPOWERD 15 Rep 338 Posts Drives: 2010 M6 Join Date: Nov 2010 Location: Cloud Nine iTrader: (0) Garage List 2006 Z4M [8.00] 2010 BMW M6 [9.00]	Yes as you will also have to bleed the clutch. __________________ 2010 Dinan M6 Coupe--2006 Z4MC--1994 E36/M3 Track Prepped BMWCCA #442445 YouTube Channel: http://www.youtube.com/user/Randy23185
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01-22-2012, 04:21 PM	#3
msh441 Second Lieutenant 17 Rep 219 Posts Drives: 2007 BMW Z4 M Coupe Join Date: Nov 2011 Location: Pacific Northwest iTrader: (1) Garage List 2000 Volve S70 se [0.00] 2000 Triumph Dayton ... [0.00] 2007 Husqvarna TE250 [0.00] 2002 Ducati Monster ... [0.00] 2007 BMW [0.00]	Curious: what does bleeding the clutch have to do with changing brake fluid? Why is is significantly easier to do them at the same time? Not familiar with the specific procedure on the Z4, but I'm curious, as I do plan on doing the CDV delete this spring.
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