E90Post
 


ECS BMW
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Spec 3+ clutch engagement



Reply
 
Thread Tools Search this Thread
      11-22-2016, 10:13 AM   #1
JasW
Captain
JasW's Avatar
168
Rep
643
Posts

Drives: 2013 335is E93 6MT
Join Date: Jul 2015
Location: South Florida

iTrader: (0)

Garage List
Spec 3+ clutch engagement

I'm in the midst of my break-in period with the Spec 3+ clutch (and an SMFW). The engagement point of the clutch is almost right at the top -- I only have to depress the clutch pedal slightly when shifting.

Aside from the fact that this is at odds with my years and years of pushing the pedal at least halfway to the floor, I can see how this would enable quicker shifts by allowing a lighter, faster touch with the left foot. But is this normal? That is, will it settle down to a lower point after the break in period? I'm afraid of getting sloppy and grinding by applying too light a touch now.

Someone on another, non-BMW forum reported that after unsuccessfully trying to adjust the engagement point, they'd been told by Spec tech support that the pedal would return to the factory engagement point by the end of the break-in period. I'd be interested to hear from anyone else who's had similar experience.
__________________
2013 335is E93 6MT | LeMans Blue/Saddle Brown
BQ Tuning MHD E60 flash | Cobb catted DPs | ETS 5" FMIC | BMS DCI | Fuel-It Stage 2 LPFP | MMP inlets/outlets | Forge DVs | N20 TMAP sensor
Vibrant 1790 resonators/mid-cat delete | MPI CP | Spec Stage 3+ clutch and steel SMFW | Wavetrac LSD | M3 rear subframe and diff bushings
Appreciate 0
      11-22-2016, 12:50 PM   #2
2jzn54
Captain
22
Rep
819
Posts

Drives: 07 E90 335i 6MT
Join Date: Jul 2011
Location: United States

iTrader: (6)

i don't have a spec.. but with my twin disc you can adjust the engagement point by using more or less shims. Guessing by your post your clutch/flywheel package didn't come with shims?

Personally I like the engagement right at the top, but I can understand why you'd hate it. The engagement point didn't really move much for me after break-in.
Appreciate 0
      11-22-2016, 04:03 PM   #3
JasW
Captain
JasW's Avatar
168
Rep
643
Posts

Drives: 2013 335is E93 6MT
Join Date: Jul 2015
Location: South Florida

iTrader: (0)

Garage List
Quote:
Originally Posted by Daily Three View Post
i don't have a spec.. but with my twin disc you can adjust the engagement point by using more or less shims. Guessing by your post your clutch/flywheel package didn't come with shims?

Personally I like the engagement right at the top, but I can understand why you'd hate it. The engagement point didn't really move much for me after break-in.
I don't believe it did come with shims, but I don't know for sure. The install was done by my performance shop, which got the Spec package overnighted when my old stock clutch suddenly turned to mush. Unfortunately, the install proved to be much more expensive than the norm because my inlets had to be taken out and put back in -- while they are in a stock location horizontally, they drop down vertically and prevent removal of the tranny. So it would be cost-prohibitive at this point to get back in there.

I actually like the engagement at the top for shifting in between gears because it is super fast. What I don't like is shifting into first from a stop. I have a lifelong, probably bad practice of waiting at a stop in 1st gear with my foot resting on the clutch pushed all the way to the floor. Now I have to keep my foot tense just below that top engagement point. I'm still getting the hang of that. I sometimes have a lot of overrevving as I'm shifting into first If I've pushed down on the clutch too much.
__________________
2013 335is E93 6MT | LeMans Blue/Saddle Brown
BQ Tuning MHD E60 flash | Cobb catted DPs | ETS 5" FMIC | BMS DCI | Fuel-It Stage 2 LPFP | MMP inlets/outlets | Forge DVs | N20 TMAP sensor
Vibrant 1790 resonators/mid-cat delete | MPI CP | Spec Stage 3+ clutch and steel SMFW | Wavetrac LSD | M3 rear subframe and diff bushings
Appreciate 0
      11-22-2016, 07:33 PM   #4
Ozzie335i
Captain
United_States
93
Rep
775
Posts

Drives: 2011 335i
Join Date: Aug 2014
Location: DFW

iTrader: (0)

I believe the throw out bearing can be installed both ways, allowing a high or low engagement point.
Appreciate 0
      11-22-2016, 08:11 PM   #5
JTswole83
Private
22
Rep
95
Posts

Drives: 335i
Join Date: Oct 2014
Location: Tampa, FL

iTrader: (0)

The TObearing needs to be installed in the factory position.
__________________
JPKIT |67mm|all the boost|tuned by Ken
Appreciate 0
      11-22-2016, 08:57 PM   #6
JasW
Captain
JasW's Avatar
168
Rep
643
Posts

Drives: 2013 335is E93 6MT
Join Date: Jul 2015
Location: South Florida

iTrader: (0)

Garage List
Quote:
Originally Posted by Ozzie335i View Post
I believe the throw out bearing can be installed both ways, allowing a high or low engagement point.
Quote:
Originally Posted by JTswole83 View Post
The TObearing needs to be installed in the factory position.
Yup, thanks, I just found out from Spec that the bearing should be installed as the original bearing was, with orientation on the low setting, if you want the engagement point more or less the same as stock. Apparently, mine was installed on the high setting. Aside from the car being less pleasurable for me to drive, I'm concerned that the engagement point will keep getting even higher, as it tends to do as the clutch wears, leading to slipping and glazing and having to replace the clutch way too soon. The install shop screwed up here -- they should have asked. I trust they'll do right by me because I've dropped a ton of $$ with them.
Appreciate 0
      11-22-2016, 08:58 PM   #7
Julian2485
Major
35
Rep
1,108
Posts

Drives: Black lci e90 335 xdrive
Join Date: Sep 2013
Location: New york

iTrader: (0)

Where do the shims go ?
Appreciate 0
      12-08-2016, 12:50 AM   #8
Lshaw
Lieutenant Colonel
Lshaw's Avatar
United_States
92
Rep
1,781
Posts

Drives: 09 335i 6mt
Join Date: Oct 2007
Location: NYC/Pittsburgh

iTrader: (21)

My spec 3+ was installed the same way. Wont go higher, might drop a tad. About 20k miles on it now and no complaints!
__________________
07 335xi- (2007-2010)
08 Legacy Spec B Fully Built (08-)
09 335i (2010-)
15 X5 xdrive 35i (2015-)
17 Forester XT
Appreciate 0
      12-09-2016, 10:25 AM   #9
JasW
Captain
JasW's Avatar
168
Rep
643
Posts

Drives: 2013 335is E93 6MT
Join Date: Jul 2015
Location: South Florida

iTrader: (0)

Garage List
Quote:
Originally Posted by Lshaw View Post
My spec 3+ was installed the same way. Wont go higher, might drop a tad. About 20k miles on it now and no complaints!
That's good to hear. I brought mine into the shop for a look see, and they bled the clutch and put in the Burger clutch delay valve I'd picked up. The engagement point is just a tad lower now, and engagement is a tad smoother. I can live with it. Second gear is a bit notchier than it had been. Not sure what to do there because the gear fluid was replaced with the good stuff (Red Line ATF D4).
__________________
2013 335is E93 6MT | LeMans Blue/Saddle Brown
BQ Tuning MHD E60 flash | Cobb catted DPs | ETS 5" FMIC | BMS DCI | Fuel-It Stage 2 LPFP | MMP inlets/outlets | Forge DVs | N20 TMAP sensor
Vibrant 1790 resonators/mid-cat delete | MPI CP | Spec Stage 3+ clutch and steel SMFW | Wavetrac LSD | M3 rear subframe and diff bushings
Appreciate 0
      12-09-2016, 11:11 AM   #10
Julian2485
Major
35
Rep
1,108
Posts

Drives: Black lci e90 335 xdrive
Join Date: Sep 2013
Location: New york

iTrader: (0)

Quote:
Originally Posted by JasW View Post
Quote:
Originally Posted by Lshaw View Post
My spec 3+ was installed the same way. Wont go higher, might drop a tad. About 20k miles on it now and no complaints!
That's good to hear. I brought mine into the shop for a look see, and they bled the clutch and put in the Burger clutch delay valve I'd picked up. The engagement point is just a tad lower now, and engagement is a tad smoother. I can live with it. Second gear is a bit notchier than it had been. Not sure what to do there because the gear fluid was replaced with the good stuff (Red Line ATF D4).
Once I bled my clutch it got alt better as well engagement dropped a little and smoother shifting but take out the clutch delay valve and just connect the clutch lines straight together
Appreciate 0
      12-09-2016, 11:45 AM   #11
Lshaw
Lieutenant Colonel
Lshaw's Avatar
United_States
92
Rep
1,781
Posts

Drives: 09 335i 6mt
Join Date: Oct 2007
Location: NYC/Pittsburgh

iTrader: (21)

Quote:
Originally Posted by JasW View Post
That's good to hear. I brought mine into the shop for a look see, and they bled the clutch and put in the Burger clutch delay valve I'd picked up. The engagement point is just a tad lower now, and engagement is a tad smoother. I can live with it. Second gear is a bit notchier than it had been. Not sure what to do there because the gear fluid was replaced with the good stuff (Red Line ATF D4).
it softens up though once broken in, very grabby for sure though. I used synchromax fluid. CDV is always a must.
__________________
07 335xi- (2007-2010)
08 Legacy Spec B Fully Built (08-)
09 335i (2010-)
15 X5 xdrive 35i (2015-)
17 Forester XT
Appreciate 0
      12-09-2016, 11:49 AM   #12
JasW
Captain
JasW's Avatar
168
Rep
643
Posts

Drives: 2013 335is E93 6MT
Join Date: Jul 2015
Location: South Florida

iTrader: (0)

Garage List
Quote:
Originally Posted by Julian2485 View Post
Once I bled my clutch it got alt better as well engagement dropped a little and smoother shifting but take out the clutch delay valve and just connect the clutch lines straight together
I don't believe there's much of a difference between a full CDV delete and a CDV modified with a wider opening (which is what the Burger CDV is). Either way you get faster clutch take-up.
__________________
2013 335is E93 6MT | LeMans Blue/Saddle Brown
BQ Tuning MHD E60 flash | Cobb catted DPs | ETS 5" FMIC | BMS DCI | Fuel-It Stage 2 LPFP | MMP inlets/outlets | Forge DVs | N20 TMAP sensor
Vibrant 1790 resonators/mid-cat delete | MPI CP | Spec Stage 3+ clutch and steel SMFW | Wavetrac LSD | M3 rear subframe and diff bushings
Appreciate 0
      12-09-2016, 01:53 PM   #13
Julian2485
Major
35
Rep
1,108
Posts

Drives: Black lci e90 335 xdrive
Join Date: Sep 2013
Location: New york

iTrader: (0)

Quote:
Originally Posted by JasW View Post
Quote:
Originally Posted by Julian2485 View Post
Once I bled my clutch it got alt better as well engagement dropped a little and smoother shifting but take out the clutch delay valve and just connect the clutch lines straight together
I don't believe there's much of a difference between a full CDV delete and a CDV modified with a wider opening (which is what the Burger CDV is). Either way you get faster clutch take-up.
I felt a difference when I did both
Appreciate 0
      12-09-2016, 02:31 PM   #14
JasW
Captain
JasW's Avatar
168
Rep
643
Posts

Drives: 2013 335is E93 6MT
Join Date: Jul 2015
Location: South Florida

iTrader: (0)

Garage List
Quote:
Originally Posted by Julian2485 View Post
I felt a difference when I did both
How so? An even faster take up? To the extent I have any complaints now, it's more about the notchiness in 2nd gear -- not getting as smooth and quick a shift as I can when going from 1st to 2nd puts kind of a damper on quick acceleration from a stop.
Appreciate 0
      12-09-2016, 02:37 PM   #15
Julian2485
Major
35
Rep
1,108
Posts

Drives: Black lci e90 335 xdrive
Join Date: Sep 2013
Location: New york

iTrader: (0)

Quote:
Originally Posted by JasW View Post
Quote:
Originally Posted by Julian2485 View Post
I felt a difference when I did both
How so? An even faster take up? To the extent I have any complaints now, it's more about the notchiness in 2nd gear -- not getting as smooth and quick a shift as I can when going from 1st to 2nd puts kind of a damper on quick acceleration from a stop.
Yea even removing the delay valve doesn't solve that
Appreciate 0
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


All times are GMT -4. The time now is 01:54 PM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2017, 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