120D Clutch Delay Valve Removal

This section shows how to carry out modifications to your 1 Series. Please remember that if you are modifying your car to take photo's at each step and document the mod in here.
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Flay2010
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120D Clutch Delay Valve Removal

Post by Flay2010 » Fri Jun 24, 2016 10:53 pm

Just bought my first 118D 2007 and also New to the site but thought I'd share my removal of my Clutch Delay Valve today.

Haven't found a "how to" on the 118d

Tools needed
1. jack/x2 axle stands
2. flat blade screw driver
3. 8mm socket/ ratchet
4. 11mm ratchet spanner
5. Dot 4 brake fluid 1 litre
6. Helper (random bloke of the street will do)

1. Jack up the front of the car, and place on axle stands so the car is level helps with bleeding the clutch after.

2. Remove x8 8mm under tray bolts, removing the mid undertray section revealing the fuel filter.

3. Near the fuel filter is the CDV planted in the clutch line, you can't miss it (2 inch long black valve), before I removed the valve from underneath I sucked all the fluid out the brake fluid reservoir and topped up with fresh DOT 4 right to the top! So it doesn't empty when I pull the valve apart. Also gives a chance to plug the pipe with my finger! Before it all drains out...you don't want that to happen..Remember to top up the brake reservoir to the top as there is a separate part for the clutch fluid in the same housing. Don't bleed empty.

4. Once that is full, back underneath you need to remove the metal clip holding the valve to the flexi hose, then remove the other metal clip on the other side holding the other end in..When both clips have been removed. Pull the valve from inbetween the hoses. As soon as You do this get ready to plug the flexi hose side with your finger.

5. Once removed Pass the valve out from under the car to the helper to smash out the inners with a 2/3mm Alan key. Stay under the car keeping the hose plugged with your finger!

6. As soon as it's been gutted refit in reverse as quick as you can so minimal fluid leaked out.

7. Check brake fluid, shouldn't of dropped much! If any... Top up to the top of needed.

8. Get Helper to Pump clutch pedal about 50 times.

9. Use 11mm ratchet spanner on the bleed screw right next to the CDV. It's the only 11mm plastic but in the area. BE CAREFUL it's made of plastic!!! Don't over tighten.

10. Bleed like you would for the brakes. Pumping the clutch 50/60 times in between up and down. Took me about 10 minutes to fully bleed with this method. I lost about 2 tablespoons worth of fluid when removing the valve. Easy! I didn't use a hose pipe clamp because the valve wasn't off long enough to mess around! Take off, smash out, back on! Bleed..

20 minute job. Any novice can attemp and do this with minimal tools.

This simple, cheap modification has now made the 1 series actually drivable lol before I was jumping all over the place. Now...it's real smooth.

If you need any advice let me know..

If this helps anyone it's a bonus.
Last edited by Flay2010 on Mon Jul 04, 2016 2:07 pm, edited 1 time in total.
2008 120D Coupe M Sport (N47) Miltek Exhaust/MT sports Cat, DPF removed Full Remap - 218 PS. And some other stuff.com

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mat280787
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Re: 118D Clutch Delay Valve Removal

Post by mat280787 » Fri Jun 24, 2016 11:58 pm

What does this do?
Alpine white e87 120d M Sport

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Flay2010
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Re: 118D Clutch Delay Valve Removal

Post by Flay2010 » Sat Jun 25, 2016 8:19 am

When you let the clutch out fully at the pedal..it's not actually fully engaged due to the restrictor valve only letting a small amount of clutch fluid bypass at one time.

It restricts the clutch making it jerky in first and second also makes it near impossible to feel where the biting point is...shocking BMW design maybe you know what I mean? It also prevents excessive clutch wear, as this valve fitted will cause this!! it's simple to remove and drives 100% better.
2008 120D Coupe M Sport (N47) Miltek Exhaust/MT sports Cat, DPF removed Full Remap - 218 PS. And some other stuff.com

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Madtoady
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Re: 120D Clutch Delay Valve Removal

Post by Madtoady » Mon Jul 11, 2016 12:29 am

I really want to get this done and the judder really does get on my nerves but I'm a complete novice. How much do you think a garage would charge for doing this?
E81 120d M Sport - Sparkling Graphite.
http://www.babybmw.net/viewtopic.php?f=19&t=51125

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Flay2010
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Re: 120D Clutch Delay Valve Removal

Post by Flay2010 » Sat Jul 23, 2016 2:44 pm

Whereabouts are you maybe someone on here could swing by and help you out.
2008 120D Coupe M Sport (N47) Miltek Exhaust/MT sports Cat, DPF removed Full Remap - 218 PS. And some other stuff.com

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myles
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Re: 120D Clutch Delay Valve Removal

Post by myles » Sat Jul 23, 2016 2:56 pm

I fancy doing this too.
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Octavius
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Re: 120D Clutch Delay Valve Removal

Post by Octavius » Sat Jul 23, 2016 3:23 pm

Is the clutch not self bleeding :?:
I've never known anyone have to bleed the clutch line after doing this including myself having done three.
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Flay2010
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Re: 120D Clutch Delay Valve Removal

Post by Flay2010 » Sat Jul 23, 2016 3:48 pm

Self bleeding clutch lol
2008 120D Coupe M Sport (N47) Miltek Exhaust/MT sports Cat, DPF removed Full Remap - 218 PS. And some other stuff.com

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Re: 120D Clutch Delay Valve Removal

Post by Octavius » Sat Jul 23, 2016 4:41 pm

Flay2010 wrote:Self bleeding clutch lol
Why do you jest my man ?
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Madtoady
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Re: 120D Clutch Delay Valve Removal

Post by Madtoady » Tue Jul 26, 2016 11:23 pm

Flay2010 wrote:Whereabouts are you maybe someone on here could swing by and help you out.
I'm based in Kent-Medway. Anyone local done this mod?
E81 120d M Sport - Sparkling Graphite.
http://www.babybmw.net/viewtopic.php?f=19&t=51125

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Re: 120D Clutch Delay Valve Removal

Post by Octavius » Wed Jul 27, 2016 10:25 am

If you know what your doing and are quick enough with the swap over its just plug and play with the new valve.
Buy a new one and modify it ready for the Change.
If you do get any air in the system it usually just finds its way up through the pipework into the reservoir so clears itself overnight.
If you get so much sir in the system that you completely loose the pedal you are a total c**k and shouldn't have attempted the mod.
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Re: 120D Clutch Delay Valve Removal

Post by 0l0dom0l0 » Wed Jul 27, 2016 10:56 am

Blackbmw120d wrote:If you know what your doing and are quick enough with the swap over its just plug and play with the new valve.
Buy a new one and modify it ready for the Change.
If you do get any air in the system it usually just finds its way up through the pipework into the reservoir so clears itself overnight.
If you get so much sir in the system that you completely loose the pedal you are a total c**k and shouldn't have attempted the mod.
This man is correct.

It is not necessary to bleed the clutch line after installation if you are quick and efficient during the swap over.

You do need to start the engine and operate the clutch pedal a few times before you set off though - if you still have resistance on the pedal and the clutch still disengages then you are fine to drive the car - after a short drive the clutch will have bled itself and be working as normal.

I know this because I bled the clutch line and NO AIR came out of the bleed nipple when I did so - but the bite was slightly lower than usual. After a short drive all was back to normal.
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Re: 120D Clutch Delay Valve Removal

Post by Wilko135i » Fri Aug 05, 2016 10:48 am

I wonder if this mod applies to the 135i?
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Re: 120D Clutch Delay Valve Removal

Post by GarryK » Fri Aug 05, 2016 9:25 pm

Is this on all 1 series models?
My 116 has judder and it drives me insane. Bmw state no fault though!!
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Re: 120D Clutch Delay Valve Removal

Post by DrewMsport » Sat Aug 27, 2016 3:40 pm

Hmmm intrested in this as i have noticed a little judder on set off in my 116d, only bit i dont kike is the smashing the innards out part? Litterally just tryibg to turn this into a straight through bit if pipe? Is it just a shuttle valve inside there?
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