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Cdv removal

2003 - 2009, roadster, coupe, facelift
chuckmiester
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Cdv removal

Post by chuckmiester » Fri Feb 15, 2019 2:02 pm

Thinking of doing the CDV delete. Does the clutch need bleeding afterwards and if so where is the bleed nipple?
Thanks in advance
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Marlon
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Cdv removal

Post by Marlon » Fri Feb 15, 2019 2:26 pm

No, you don't have to bleed the clutch - do a search on the forum to find out how
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Nictrix
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Cdv removal

Post by Nictrix » Fri Feb 15, 2019 2:58 pm

Marlon wrote: Fri Feb 15, 2019 2:26 pm No, you don't have to bleed the clutch - do a search on the forum to find out how
Why would you not?
If there is a chance that air has entered the system would it not make sense to bleed it to make sure?
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Cdv removal

Post by Marlon » Fri Feb 15, 2019 3:26 pm

Nictrix wrote: Fri Feb 15, 2019 2:58 pm
Marlon wrote: Fri Feb 15, 2019 2:26 pm No, you don't have to bleed the clutch - do a search on the forum to find out how
Why would you not?
If there is a chance that air has entered the system would it not make sense to bleed it to make sure?
Okay, let me clarify; I haven't personally done this, however I have read many 'CDV delete' threads by members who have successfully removed it without bleeding the clutch.
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Cdv removal

Post by G600 » Fri Feb 15, 2019 3:39 pm

I'd definitely bleed the clutch, and run some fluid through it, it uses the bake fluid and if it's anything like mine it will be pretty manky, the nipple is right next to the CDV if I remember correctly.
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chuckmiester
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Cdv removal

Post by chuckmiester » Fri Feb 15, 2019 3:46 pm

Thanks for that g600. Does the clutch have its own resovoir or will it be topped up via the brake fluid red?
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Cdv removal

Post by mjennings23 » Fri Feb 15, 2019 4:08 pm

I bled mine out and replaced the fluid when I removed the CDV. It's the same reservoir and fluid as the brakes, the bleed nipple is a bit awkward to reach but not difficult.

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Cdv removal

Post by Nictrix » Fri Feb 15, 2019 4:13 pm

Marlon wrote: Fri Feb 15, 2019 3:26 pm
Nictrix wrote: Fri Feb 15, 2019 2:58 pm
Marlon wrote: Fri Feb 15, 2019 2:26 pm No, you don't have to bleed the clutch - do a search on the forum to find out how
Why would you not?
If there is a chance that air has entered the system would it not make sense to bleed it to make sure?
Okay, let me clarify; I haven't personally done this, however I have read many 'CDV delete' threads by members who have successfully removed it without bleeding the clutch.
I have read some of these threads and although people might not have any problems is it really worth it for an extra 5 minutes bleeding it.
I don't think I would want to advise someone that it doesn't need done though.
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Cdv removal

Post by Lance » Fri Feb 15, 2019 4:26 pm

mjennings23 wrote: Fri Feb 15, 2019 4:08 pm I bled mine out and replaced the fluid when I removed the CDV. It's the same reservoir and fluid as the brakes, the bleed nipple is a bit awkward to reach but not difficult.
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Cdv removal

Post by Lance » Fri Feb 15, 2019 4:29 pm

The actual CDV removal and clutch bleed are very easy. Access is a bit of a pain, but nothing too difficult.

If you're working under the car, (not up on a garage ramp), make sure you have all what you need with you under the car, including some rag and paper towels.

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Cdv removal

Post by Liam22 » Fri Feb 15, 2019 5:18 pm

Has anyone replaced the entire hose with a CDV-delete item?

I'm looking at this:
https://auto.helperformance.com/bmw-1-s ... ants-11628

Doesn't mention E85/E86 but the Hack Engineering item shows that it fits nearly all models with a CDV:
http://www.hackengineering.co.uk/produc ... ne-models/

Any experience here?

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Cdv removal

Post by G600 » Fri Feb 15, 2019 7:25 pm

There was no need to fit a longer pipe or drill out the CDV on my car (M54B30) the existing pipe was long enough to fill the gap.
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Cdv removal

Post by LittleZ4 » Fri Feb 15, 2019 7:35 pm

I never needed to do mine at all. Pedal was exactly the same afterwards. Although bleeding it definitely won't hurt.
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Cdv removal

Post by mjennings23 » Fri Feb 15, 2019 10:47 pm

Only thing I'd say, as with working on any hardlines for fluid, get a set of 5 point flare nut spanners!

These are the ones I bought, I believe! https://www.ebay.co.uk/i/252864017173?r ... 2864017173

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Post by Marlon » Sat Feb 16, 2019 8:25 pm

Where are all the forum members who delete CDVs in 5 mins by clamping the hose without bleeding the clutch and never had an issue? This was the de-facto method IIRC, I'm sure I didn't imagine it :? :D
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