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CDV delete

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bigwinn
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CDV delete

Post by bigwinn » Sun Oct 24, 2021 6:17 pm

I’d done this on the 2.2 but was a distant memory

So- decided to do on the 2.5, but couldn’t find a refresher guide

So here it is

Sorry no pics!!

Jack the car up from the front, as high as possible and chock the rear wheels- as you are going right under make double sure you are happy it’s safe!

You’ll need

2x 17mm open spanner
11mm open spanner
7mm open spanner (to bleed)
Bleed kit
Monkey grips or similar clamp

Head under the car from the front- when you arrive at the gearbox you’ll see the set up.

Rubber pipe, going into CDV, into Union, into hard metal pipe that heads to the clutch.

First job- free up all joints first by using opposing force- not direct as you’ll bend the metal pipe.

Once done, clamp the rubber pipe to stop excess fluid loss. Then undo the join between the 11mm and next 17mm.

When that’s undone, unscrew the CDV. Reattach the rubber hose jointed part to the 11mm Union. Secure and tighten.

Find the bleed nipple above the set up and use the self bleeder to get any air out of the hydraulic system. Lock that off and tidy up.

This is the CDV out of its nest.
97C26945-0D36-4FFE-8299-350A88DBFA71.jpeg
97C26945-0D36-4FFE-8299-350A88DBFA71.jpeg (104.53 KiB) Viewed 857 times
If the forum helped you, why not help the forum back. Thats the Z4 way! :thumbsup:

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enuff_zed
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CDV delete

Post by enuff_zed » Sun Oct 24, 2021 6:21 pm

And has it made any difference?
Apart from the obvious huge weight saving. :roll:
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Always happy to help if I can.

If the forum helped you, why not help the forum back. Thats the Z4 way! :thumbsup:
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Floydroid
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CDV delete

Post by Floydroid » Mon Oct 25, 2021 1:41 pm

My CDV is a PITA! It's on the list of things to do! Thanks.
Z4 Roadster 3.0 manual grey Msport suspension 2004. Now including Cruise Control!
125D BMW manual 2013
Subaru Impreza track car owned for the last 21years...
123D manual remapped silver 2007 - Sold!
118i SE blue 2008 manual for sale! - Sold!

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Chris_D
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CDV delete

Post by Chris_D » Mon Oct 25, 2021 7:46 pm

Removed mine and didn’t notice a huge difference tbh.
I think it’s really beneficial if you’re a ‘spirited’ driver, racing away from the lights using racing style gear changes and don’t want to get bogged down.
If you have a light foot and controlled driving style as in my case, i.e. you drive like an old lady, it would be hard to see any benefit.

Concise and correct write-up tho fella.
:thumbsup:
E85 3.0i roadie (03) 'Benny'. E93 320d M-Sport Cabrio (11) 'Bob'.
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