[Chicken_Joe]

Originally Posted by JaredG_F30

I can't find it now, but I read on here recently of someone who swapped out the stock slave cylinder with another BMW OEM slave cylinder that doesn't have the integrated CDV and it's a direct swap. I need to find that thread again because when it's time for a new clutch I'm deleting the CDV as well. I hate it!!

I believe it was from an F10 535i

[JaredG_F30]

I found it. It's the slave cylinder from the E90 335i. It's a direct swap with no integrated CDV.

Originally Posted by Chicken_Joe

I believe it was from an F10 535i

[Joeirl92]

Originally Posted by codestar

I had very similar symptoms when it first began slipping. mostly 3rd and 4th, felt like a stutter. I posted on here a few times about it. Then I tried a couple hard launches when messing around with friends that caused it to slip really bad because of the cdv and that's pretty much what toasted the clutch.

I bought a spec stage 2+ with an OEM style LuK DMF and also a new slave cylinder and removed the CDV. Been running great lately. Clutch woes have completely disappeared and now I'm feeling the need for more power again

I want to run this exam same setup. Experiencing slippage in BM3 stage 2.

Just to clarify:
Spec stage 2+ clutch
OEM style Dual mass flywheel (can you direct me to which one you bought? I'm assuming it's the 335is/550i)

A slave cylinder (can you direct me to this as well?)

you removed the CDV. I'm not even sure what to tell my mechanic about this part lol.

If you can help me out I'd greatly appreciate it man.

[thejeremyman9]

Originally Posted by Joeirl92

I want to run this exam same setup. Experiencing slippage in BM3 stage 2.

Just to clarify:
Spec stage 2+ clutch
OEM style Dual mass flywheel (can you direct me to which one you bought? I'm assuming it's the 335is/550i)

A slave cylinder (can you direct me to this as well?)

you removed the CDV. I'm not even sure what to tell my mechanic about this part lol.

If you can help me out I'd greatly appreciate it man.

Are you asking what the CDV does or how to delete it? You can either delete it or follow the post above yours and get the slave that does not have a CDV.

[codestar]

Originally Posted by Joeirl92

I want to run this exam same setup. Experiencing slippage in BM3 stage 2.

Just to clarify:
Spec stage 2+ clutch
OEM style Dual mass flywheel (can you direct me to which one you bought? I'm assuming it's the 335is/550i)

A slave cylinder (can you direct me to this as well?)

you removed the CDV. I'm not even sure what to tell my mechanic about this part lol.

If you can help me out I'd greatly appreciate it man.

Because the slave is located on the transmission itself that needs to be dropped to replace the clutch I just bought a brand new one (around 150cdn if I recall) and grabbed a little pick and pulled the valve out myself and asked them to swap it when the clutch was being done

My parts were:

- Spec st2+ for OEM flywheel: SB553H (NOT sb553h-2, that is for SMF only)
- New BMW clutch slave cyl: 21526795713
- 6x torx bolts for clutch mount: 23001222894
- LuK OEM DMF: 21207640733
- 6x flywheel bolts: 11227520706

The shop had to buy a few more bolts during the install because they are "single use" as per BMW. I can't recall what they were because they just grabbed them from the dealership at the time of installation

[Joeirl92]

Originally Posted by thejeremyman9

Are you asking what the CDV does or how to delete it? You can either delete it or follow the post above yours and get the slave that does not have a CDV.

Thanks for the clarification man. So I essentially just buy the E90 slave as opposed to what Codestar bought. Therefore I wont even have to mention a delete if my mechanic just uses the E90 slave as mentioned in the post above.

Meaning:
- Spec 2+ SB553H (for DMF)
- E90 slave (it does not have a CDV; Direct swap, no delete)
- 6x torx bolts for clutch mount
- LuK OEM DMF
- 6x flywheel bolts

Originally Posted by codestar

Because the slave is located on the transmission itself that needs to be dropped to replace the clutch I just bought a brand new one (around 150cdn if I recall) and grabbed a little pick and pulled the valve out myself and asked them to swap it when the clutch was being done

My parts were:

- Spec st2+ for OEM flywheel: SB553H (NOT sb553h-2, that is for SMF only)
- New BMW clutch slave cyl: 21526795713
- 6x torx bolts for clutch mount: 23001222894
- LuK OEM DMF: 21207640733
- 6x flywheel bolts: 11227520706

The shop had to buy a few more bolts during the install because they are "single use" as per BMW. I can't recall what they were because they just grabbed them from the dealership at the time of installation

I appreciate the detailed list with part numbers man. I can't wait to get this car dialed in. I'll be ordering the exact same part list, with the exception of getting the E90 slave as I mentioned to Jeremy.

In terms of the bolts, I'll probably have to tell the mechanic ahead of time, I'm sure he's mentioned that he works directly with BMW so he should be able to order when need be.

[TOMF30N55]

[sqwinny]

The steel single mass flywheel makes a little more noise for those searching. It's not bad but definitely a small tick similar to a Diesel engine. The spec stage 3+ after break in feels close to stock but with a little more grab.

CDV delete makes the clutch actually grab and go from a stop and the 1-2 shift, but that won't make a difference once our fully in gear and go WOT to check for a slipping clutch

[f30aleks]

Hey guys I’m new to here so don’t really know how to use this lol, but I’m replacing the clutch on my 2013 335i xdrive. I bought a 550i clutch kit and found out my flywheel was done for. I found a spec light weight aluminum flywheel that I want to get but I’m not sure if it’ll work fine with the 550i kit?? Also while I’m in there I did the CDV delete, heard good things about deleting it.

[BMW DRIVEN]

Definitely the clutch, Chicken Joe. My clutch immediately started slipping when going Stage 2 E30.

Currently, running Spec Stage 2+ with OEM Flywheel. I daily my car and love this setup.