BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
 





 

Post Reply
 
Thread Tools Search this Thread
      06-15-2012, 06:09 PM   #1
RaptorKTM
Colonel
 
RaptorKTM's Avatar
 
Drives: 1 M Coupe
Join Date: Apr 2006
Location: San Diego

Posts: 2,367
iTrader: (1)

Garage List
2011 BMW 1 M  [0.00]
1 M CDV Delete - Holy Crap!!

Just had HG Motorsports (San Diego) modify my CDV valve and put it back in. Holy Crap, its like a new car. Engagement is precise, easy to shift, smooth, most of all the Clutch pedal has actual feel, doesn't feel numb.

If anyone has not yet done this mod, it requires some simple tools, and does not take more then an hour. HG motorsports in the process bled my brake and clutch system, and replaced the fluid with Motul RBF600, all in all I would not really do this in your own garage unless you are comfortable with properly bleeding the lines, I have read many threads where people pinch the line and think that will prevent leaking of fluid and wont require bleeding, THEY ARE WRONG. You must bleed the system and I suggest having a brake bleeder to keep constant pressure to bleed it correctly has HG used.
RaptorKTM is offline   United_States
0
Reply With Quote
      06-15-2012, 06:27 PM   #2
JohnCena
Banned
 
Drives: VO
Join Date: Mar 2012
Location: MERICA

Posts: 212
iTrader: (0)

Garage List
Cheapest and one of the top 10 mods on a must list
JohnCena is offline  
0
Reply With Quote
      06-15-2012, 06:54 PM   #3
ilikebmxbikes
Colonel
 
ilikebmxbikes's Avatar
 
Drives: S65 1M Clone & 2013 E92 M3
Join Date: Apr 2011
Location: San Francisco

Posts: 2,799
iTrader: (33)

Gread mod. I was one who waited too long to do it. HG is a great shop too. Chris Frick is the man.
__________________
ilikebmxbikes is offline  
0
Reply With Quote
      06-15-2012, 06:55 PM   #4
RaptorKTM
Colonel
 
RaptorKTM's Avatar
 
Drives: 1 M Coupe
Join Date: Apr 2006
Location: San Diego

Posts: 2,367
iTrader: (1)

Garage List
2011 BMW 1 M  [0.00]
yea known them for a while as well and they are one of really very very very few shops that are Legit.
RaptorKTM is offline   United_States
0
Reply With Quote
      06-15-2012, 08:34 PM   #5
ayao
Thread killer
 
Drives: 1M
Join Date: Aug 2011
Location: CA

Posts: 594
iTrader: (0)

Man, just when I thought I was finished with (minor) modding.
Anyone know of any legit places up in Norcal?
ayao is offline  
0
Reply With Quote
      06-15-2012, 10:20 PM   #6
firechicken99
Major
 
Drives: Black '07 335i
Join Date: Mar 2011
Location: United States

Posts: 1,032
iTrader: (0)

Because youre disconnecting the clutch line do you have to bleed each of the brakes as well? Just swapped to RBF600 and would love to do this, but dont want to have to bleed the whole system/open another $20 bottle of fluid for just a little top off....
firechicken99 is offline  
0
Reply With Quote
      06-15-2012, 10:35 PM   #7
RaptorKTM
Colonel
 
RaptorKTM's Avatar
 
Drives: 1 M Coupe
Join Date: Apr 2006
Location: San Diego

Posts: 2,367
iTrader: (1)

Garage List
2011 BMW 1 M  [0.00]
Quote:
Originally Posted by firechicken99 View Post
Because youre disconnecting the clutch line do you have to bleed each of the brakes as well? Just swapped to RBF600 and would love to do this, but dont want to have to bleed the whole system/open another $20 bottle of fluid for just a little top off....

Yes the brakes have to be bled as well being they are all interconnected through the same system.
RaptorKTM is offline   United_States
0
Reply With Quote
      06-15-2012, 11:10 PM   #8
firechicken99
Major
 
Drives: Black '07 335i
Join Date: Mar 2011
Location: United States

Posts: 1,032
iTrader: (0)

Quote:
Originally Posted by RaptorKTM View Post
Yes the brakes have to be bled as well being they are all interconnected through the same system.
Damn... As much as I want this, it can wait to teh next fluid swap....

on second thought, would there be major fluid loss if you ordered the $15 part, took out the delay valve, and swapped it in place rather than remove from trans, remove valve, then replace?
firechicken99 is offline  
0
Reply With Quote
      06-15-2012, 11:11 PM   #9
RaptorKTM
Colonel
 
RaptorKTM's Avatar
 
Drives: 1 M Coupe
Join Date: Apr 2006
Location: San Diego

Posts: 2,367
iTrader: (1)

Garage List
2011 BMW 1 M  [0.00]
no your not going to loose much, and you dont have to swap to motul, you can just get the OEM product which is very inexpensive.
RaptorKTM is offline   United_States
0
Reply With Quote
      06-15-2012, 11:20 PM   #10
int2str
Captain
 
int2str's Avatar
 
Drives: 2008 135i
Join Date: Feb 2010
Location: San Diego, CA

Posts: 655
iTrader: (2)

Quote:
Originally Posted by RaptorKTM View Post
Yes the brakes have to be bled as well being they are all interconnected through the same system.
No, the brakes do not have to be bled. Same reservoir, but different cylinders.
int2str is offline   Germany
0
Reply With Quote
      06-15-2012, 11:21 PM   #11
int2str
Captain
 
int2str's Avatar
 
Drives: 2008 135i
Join Date: Feb 2010
Location: San Diego, CA

Posts: 655
iTrader: (2)

Quote:
Originally Posted by firechicken99 View Post
On second thought, would there be major fluid loss if you ordered the $15 part, took out the delay valve, and swapped it in place rather than remove from trans, remove valve, then replace?
You're not going to loose much fluid at all either way. I used a rag and some vice grips to clamp the rubber line and lost a few drops at most. Didn't even bleed the clutch on my previous 330i after doing this.
int2str is offline   Germany
0
Reply With Quote
      06-15-2012, 11:50 PM   #12
Mr.Metak2you
Brigadier General
 
Mr.Metak2you's Avatar
 
Drives: LEXUS LS(DailyDriver)
Join Date: Nov 2007
Location: Astral Projecting: ∞ 23.516 -122 02.625 0242.101 ĕv'rē-hwr'

Posts: 4,748
iTrader: (15)

Garage List
Quote:
Originally Posted by ayao
Man, just when I thought I was finished with (minor) modding.
Anyone know of any legit places up in Norcal?
Bay Area- Alekshop
Sactown- Schatz & Krum
__________________
Mr.Metak2you is offline  
0
Reply With Quote
      06-16-2012, 12:13 AM   #13
ayao
Thread killer
 
Drives: 1M
Join Date: Aug 2011
Location: CA

Posts: 594
iTrader: (0)

Thanks!

Quote:
Originally Posted by Mr.Metak2you View Post
Bay Area- Alekshop
Sactown- Schatz & Krum
ayao is offline  
0
Reply With Quote
      06-16-2012, 01:14 AM   #14
Zuzu
Major General
 
Zuzu's Avatar
 
Drives: VO 1M Beast
Join Date: Mar 2008
Location: SyDnEy Oz

Posts: 7,537
iTrader: (0)

Quote:
Originally Posted by RaptorKTM View Post
Yes the brakes have to be bled as well being they are all interconnected through the same system.
Great mod.. Drove it straight to my workshop after delivery and replaced the CDV.. After replacing it on my 135i, it was my No 1 mod for the 1M..

And NO... you dont have to bleed the brakes NOR the clutch if replaced correctly.. My tech just R & R the CDV..No bleeding of any kind required, if done professionly..
__________________
ZUZETTE Build..http://www.1addicts.com/forums/showthread.php?t=606023
COBB tune . ETS FMIC . aFe CAI . Meisterschaft GT exhaust . SSK . Custom Midpipes . CDV . BM OCC . H&R springs :
Zuzu is offline   Australia
0
Reply With Quote
      06-16-2012, 08:37 AM   #15
Em/1
First Lieutenant
 
Em/1's Avatar
 
Drives: 2011 1M VO
Join Date: Dec 2011
Location: Chicago

Posts: 338
iTrader: (0)

Garage List
2004 Jaguar XJ8  [0.00]
2011 BMW 1M  [0.00]
2011 VW GTI  [0.00]
Any Chicagoans out there that have a favorite indy or dealer to do this kind of thing?
Em/1 is offline   United_States
0
Reply With Quote
      06-16-2012, 08:53 AM   #16
rapter
First Lieutenant
 
Drives: 1(M)other f*^#er of a car
Join Date: Nov 2010
Location: Canada

Posts: 353
iTrader: (0)

From my experience rbf600 is a high temperature racing brake fluid. Used in my race bike you will be required to replace this fluid every 3 months or sooner.

Further you inoculate brake and clutch feel will be amazing! However it will progressively fade as the fluid is more volatile than conventional.
rapter is offline  
0
Reply With Quote
      06-16-2012, 08:53 AM   #17
rapter
First Lieutenant
 
Drives: 1(M)other f*^#er of a car
Join Date: Nov 2010
Location: Canada

Posts: 353
iTrader: (0)

Quote:
Originally Posted by rapter
From my experience rbf600 is a high temperature racing brake fluid. Used in my race bike you will be required to replace this fluid every 3 months or sooner.

Further you inoculate brake and clutch feel will be amazing! However it will progressively fade as the fluid is more volatile than conventional.
Initial brake feel and clutch feel... iPhone typing.
rapter is offline  
0
Reply With Quote
      06-16-2012, 10:13 AM   #18
b33g33
Give '///M' Hell!
 
b33g33's Avatar
 
Drives: Einser Rex
Join Date: Jun 2011
Location: Atlanta, GA

Posts: 1,305
iTrader: (0)

So, they just punched out the valve and put it back?

Are there and after-market solutions that may be better?

I read on the E46 forums about a metal valve replacement?

Probably will get this done with my 5000 mile oil change.
__________________
The 1 series M is the most badass, coolest, sickest BMW to debut since the 1988 M3. The E30 M3 finally has a successor. Please welcome the stupidly fast, wickedly tempered, awkwardly named, possibly perfect little son of a benchmark - Automobile Magazine, August 2011

b33g33 is offline   United_States
0
Reply With Quote
      06-16-2012, 11:14 AM   #19
ozinaldo
Brigadier General
 
ozinaldo's Avatar
 
Drives: 1M
Join Date: Jan 2011
Location: Chile, Santiago

Posts: 3,051
iTrader: (0)

So, anyone used this:

http://www.burgertuning.com/bmscdv.html

and this:

http://www.burgertuning.com/clutch_stop_BMW.html

are they supposed to be used together or mutually exclusive?
ozinaldo is offline   Chile
0
Reply With Quote
      06-16-2012, 12:04 PM   #20
Papethova
Brigadier General
 
Papethova's Avatar
 
Drives: '08 135/ '11 1M
Join Date: Oct 2007
Location: at Death Valley 127

Posts: 3,036
iTrader: (1)

Quote:
Originally Posted by b33g33 View Post
So, they just punched out the valve and put it back?

Are there and after-market solutions that may be better?

I read on the E46 forums about a metal valve replacement?

Probably will get this done with my 5000 mile oil change.
Quote:
Originally Posted by ozinaldo View Post
So, anyone used this:

http://www.burgertuning.com/bmscdv.html

and this:

http://www.burgertuning.com/clutch_stop_BMW.html

are they supposed to be used together or mutually exclusive?
Those dont need to be used together.

You can either completely remove the piece or tap out the restriction in the piece (effectively making what burger is selling you).

Guys you dont need a shop this will take you 10 mins to do.

Jack the car up, remove the plastic panel (approx 6-8 screws), clamp the hose, pull 2 pins, pull the CDV out, either plug the hose directly back in or remove the restriction and replace the cdv, then unclamp the hose, you may choose not to bleed although Id recommend bleeding it, then reverse install the parts you removed and youre done.

I did this for 3 members here one afternoon before lunch literally 10-15mins a piece
Papethova is offline  
0
Reply With Quote
      06-16-2012, 12:55 PM   #21
firechicken99
Major
 
Drives: Black '07 335i
Join Date: Mar 2011
Location: United States

Posts: 1,032
iTrader: (0)

Quote:
Originally Posted by RaptorKTM View Post
no your not going to loose much, and you dont have to swap to motul, you can just get the OEM product which is very inexpensive.
I am already running RBF600


Quote:
Originally Posted by rapter View Post
From my experience rbf600 is a high temperature racing brake fluid. Used in my race bike you will be required to replace this fluid every 3 months or sooner....
Has that been your experience? When talking with other members it was generally noted the changes should be a bit less often than that, maybe twice a year. (note the car is road driven with a once a month HPDE/Time Attack if I can make it, and auto X etc.) so i am not racing it every weekend.
firechicken99 is offline  
0
Reply With Quote
      06-16-2012, 01:16 PM   #22
CarJunkie
Lieutenant
 
Drives: Valencia Orange 1-Series M
Join Date: Nov 2011
Location: Tri-Cities, Washington

Posts: 551
iTrader: (0)

Quote:
Originally Posted by Papethova View Post

Jack the car up, remove the plastic panel (approx 6-8 screws), clamp the hose, pull 2 pins, pull the CDV out, either plug the hose directly back in or remove the restriction and replace the cdv, then unclamp the hose, you may choose not to bleed although Id recommend bleeding it, then reverse install the parts you removed and youre done.
Can you clarify the bleeding . . . The brakes should NOT need any bleeding correct?

IIRC, bleeding the clutch only requires about 10 pumps of the pedal, no need for a pressure bleeder.
CarJunkie is offline  
0
Reply With Quote
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 09:42 AM.




1addicts
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST