Explanation of CDV mod benefits

Zuzu · 03-12-2013, 04:58 PM

Quote:

Originally Posted by Dackelone

Anytime the clutch hydraulic system is open, you MUST bleed it. Maybe he is opening and closing it so fast that a very small air bubble gets in the hydraulic line... and after a day or two that air bubble works its way up and "burps" itself. That is the only thing I can think is happening

Maybe..

Dackelone · 03-12-2013, 05:10 PM

Quote:

Originally Posted by Zuzu

Maybe..

I don't doubt he is a pro. I know in the CDV delete DIY... some guys have also stated they did not need to bleed the clutch system. I just do not understand how that can be. It is a closed system and anytime you open it up and introduce air... your gonna need to get rid of that air(bubbles).

Zuzu · 03-12-2013, 05:20 PM

Quote:

Originally Posted by Dackelone

I just do not understand how that can be. It is a closed system and anytime you open it up and introduce air... your gonna need to get rid of that air(bubbles).

Totally agree Dack, and I questioned Peter at the time in regards to not bleeding the clutch, and he assured me it was fine and he was correct..

Maybe PM Peter..

TS135i · 03-12-2013, 05:27 PM

He may have clamped the line.

TS135i · 03-12-2013, 05:48 PM

Nicely done, I will have no qualms helping out.

Zuzu · 03-12-2013, 05:56 PM

Quote:

Originally Posted by TS135i

He may have clamped the line.

Nope... Doesn't believe in clamping, as no matter how careful you are, there is always the small chance of damaging the brake line.

dan_brooks · 03-12-2013, 06:27 PM

Have a modified CDV waiting at home to go on with a bunch of other goodies when my downpipes arrive! VERY keen to get this done

dr.bmw · 03-12-2013, 06:43 PM

whats a good place to do this in Melb? cheers

Superdaws · 03-12-2013, 07:32 PM

Quote:

Originally Posted by dr.bmw

whats a good place to do this in Melb? cheers

SouthernBM did mine, just do it as part of an oil change/service and it virtually wont cost u any extra. Go in specifically just to do that and they are gunna have to charge you labour.

barr1luk · 03-13-2013, 06:07 AM

Hi guys, other than potential warranty issues, are there any other downsides/risks in doing this mod?

SLIPPERY · 03-13-2013, 06:30 AM

theres no need to bleed the clutch if the lines are fully primed with fluid. The air isnt going to displace fluid without force. Therefore if you connect both lines back together when fluid is coming from both end, no air should force its way into the system

I connect an open line for medical procedures (for my job) to an arterial catheter. Both lines are primed fully..one with contrast for angiography, the other has the backflow of blood from the artery in the groin. Both are joined together and voila, no air. WE can see this cause we use clear lines but i expect this to be no different with the hydraulic lines.

racer_x · 03-13-2013, 06:40 AM

This explains a LOT. My car shifts like a pig in traffic because of this.

Thanks for the heads up.

Dackelone · 03-13-2013, 07:06 AM

Quote:

Originally Posted by racer_x

This explains a LOT. My car shifts like a pig in traffic because of this.

Thanks for the heads up.

This DIY might help you out...

CDV Delete/Replacement DIY
http://www.1addicts.com/forums/showthread.php?t=209440

03-12-2013, 05:27 PM	#26
TS135i piggy in the mirror 47 Rep 595 Posts Drives: 2013 6MT 135i Join Date: Jan 2013 Location: Sydney, Australia iTrader: (0)	He may have clamped the line. __________________ 135i Coupe N55 PPK+JB4 X3 30d LCI
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03-12-2013, 05:48 PM	#27
TS135i piggy in the mirror 47 Rep 595 Posts Drives: 2013 6MT 135i Join Date: Jan 2013 Location: Sydney, Australia iTrader: (0)	Nicely done, I will have no qualms helping out. __________________ 135i Coupe N55 PPK+JB4 X3 30d LCI
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03-12-2013, 06:27 PM	#29
dan_brooks Private 2 Rep 79 Posts Drives: '09 135i Manual Join Date: May 2012 Location: Brisbane iTrader: (0)	Have a modified CDV waiting at home to go on with a bunch of other goodies when my downpipes arrive! VERY keen to get this done
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03-12-2013, 06:43 PM	#30
dr.bmw Chirurgeon 39 Rep 424 Posts Drives: 125i AW/CR Join Date: Apr 2009 Location: randwick iTrader: (0) Garage List 2008 125i [10.00]	whats a good place to do this in Melb? cheers __________________ E Pluribus Unum
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03-13-2013, 06:07 AM	#32
barr1luk New Member 0 Rep 25 Posts Drives: '10 135i Alpine White 6M Join Date: Jan 2012 Location: Sydney iTrader: (0)	Hi guys, other than potential warranty issues, are there any other downsides/risks in doing this mod?
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03-13-2013, 06:30 AM	#33
SLIPPERY New Member 0 Rep 28 Posts Drives: 09 BMW 135i Join Date: Jan 2013 Location: Perth, WA iTrader: (0)	theres no need to bleed the clutch if the lines are fully primed with fluid. The air isnt going to displace fluid without force. Therefore if you connect both lines back together when fluid is coming from both end, no air should force its way into the system I connect an open line for medical procedures (for my job) to an arterial catheter. Both lines are primed fully..one with contrast for angiography, the other has the backflow of blood from the artery in the groin. Both are joined together and voila, no air. WE can see this cause we use clear lines but i expect this to be no different with the hydraulic lines.
	Appreciate 0 Quote

03-13-2013, 06:40 AM	#34
racer_x Second Lieutenant 13 Rep 226 Posts Drives: When He Has To Join Date: Jan 2013 Location: Sydney iTrader: (0)	This explains a LOT. My car shifts like a pig in traffic because of this. Thanks for the heads up.
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