E90Post
 


 
BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > Clutchin' - a little OT



Reply
 
Thread Tools Search this Thread
      06-19-2007, 10:27 AM   #1
GewoW
#thatsanicemovebro
GewoW's Avatar
Greece
202
Rep
3,920
Posts

Drives: E92 M3 LSB/Black 6MT
Join Date: Mar 2007
Location: Montreal, Canada

iTrader: (4)

Garage List
2011 BMW M3  [9.34]
Clutchin' - a little OT

People always say: ''Never ride the clutch, because it will prematurely wear out your engine.'' This, while true, is many times confused, as you may already know, with completely disengaging the clutch.

People also say: ''When coasting, change it to neutral and release off the clutch, it's better than completely depressing the clutch.'' I don't like this and don't really think it's that important..

Now to my point. When coming to a stop, shifting it to neutral and then back to 1st is usual practise to me, and is not what my issue is right now, but when coasting, instead of putting it to neutral and then back into gear to accelerate, I find myself completely depressing the clutch, in gear, and then releasing slowly to accelerate. I mean, some people say that this is not good, but the clutch is completely disconnected from the driveline and there's no chance of wear...So what's the issue...There is none! (to me).

So, question is, do you completely depress the clutch or do you shift to neutral when coasting...and IS there anything wrong with coasting while completely depressing the clutch?

Thanks, and sorry for the long post. Explaining the 1st things at the start is in no way geared (pun intended! HA!) to insult your intelligence, it's more of an intro to my main point.

**edit** I never heard of a throwout bearing. Thank you to all that put it into perspective.

Last edited by GewoW; 06-19-2007 at 01:10 PM..
Appreciate 0
      06-19-2007, 10:30 AM   #2
HyperM3
Too many Alex's, from now on, call me Beaufort
United_States
342
Rep
6,188
Posts

Drives: See Sig
Join Date: Feb 2007
Location: Lawrenceville, NJ

iTrader: (8)

Not sure what youre describing when youre coasting. Like going down a long hill and you dont need to be on the gas? Then just put it in neutral and let off the clutch.

If you mean like coasting in traffic at 10-15mph theres no reason to be in neutral either or on the clutch. You can putter around in 2nd gear and then just accelerate. I even just leave it in 2nd the whole time so I dont have to keep shifting from 1st to 2nd. Theres more than enough torque to get moving from a stop in 2nd.
__________________
13 HD FatBob
17 A4 Glacier/Black 1st Edition/Pre+/Sport/EurocodeTMD/Racechip
16 S6 (gone),14 S6 (gone),14 S6 (gone),13 S6 (gone),10 S4 (gone)
07 335i(gone)
Appreciate 0
      06-19-2007, 10:44 AM   #3
GewoW
#thatsanicemovebro
GewoW's Avatar
Greece
202
Rep
3,920
Posts

Drives: E92 M3 LSB/Black 6MT
Join Date: Mar 2007
Location: Montreal, Canada

iTrader: (4)

Garage List
2011 BMW M3  [9.34]
Well, for going down the hill, I would completely disengage the clutch and roll while modulating brake, and then when I get down to a part where I have to continue accelerating, I would just slowly let off the cluth and continue on the same gear. Is there anything wrong with that, because to me it seems much simpler than going to neutral then back to gear...and it has become common practise.

Now for the traffic, 2nd is what I use, and I coast while completely disengaging the clutch, and if coming to a dead halt, I would either keep it in 2nd and go or shift down to 1st and go...No real need for 1st though, as you said, but just a habit.

Do you get what I'm describing?
Appreciate 0
      06-19-2007, 10:50 AM   #4
ward
Major General
155
Rep
6,158
Posts

Drives: F
Join Date: May 2005
Location: T

iTrader: (0)

don't push the clutch pedal down if you don't have to

the amount of time you have that pedal pressed is directly related to how fast it wears out

coasting with the pedal pressed in does wear out your clutch and associated hydraulics
Appreciate 0
      06-19-2007, 10:51 AM   #5
omg516
Lieutenant
United_States
18
Rep
572
Posts

Drives: 07 e90 335i
Join Date: Apr 2007
Location: San Francisco

iTrader: (0)

I always thought "riding the clutch" was holding it at the friction point too long and not letting it fully engage.
Appreciate 0
      06-19-2007, 10:52 AM   #6
HyperM3
Too many Alex's, from now on, call me Beaufort
United_States
342
Rep
6,188
Posts

Drives: See Sig
Join Date: Feb 2007
Location: Lawrenceville, NJ

iTrader: (8)

Quote:
Originally Posted by GewoW View Post
Do you get what I'm describing?
Yeah, I gotcha. I just have always been taught that holding the clutch while moving will wear parts. Whether its bunk or true, I dont know. Youre compressing springs to disengage a spinning part at speed, I cant imagine it doesnt stress those springs(or what else) longer than they need to be. Over time they will lose their strength.
__________________
13 HD FatBob
17 A4 Glacier/Black 1st Edition/Pre+/Sport/EurocodeTMD/Racechip
16 S6 (gone),14 S6 (gone),14 S6 (gone),13 S6 (gone),10 S4 (gone)
07 335i(gone)
Appreciate 0
      06-19-2007, 10:53 AM   #7
GewoW
#thatsanicemovebro
GewoW's Avatar
Greece
202
Rep
3,920
Posts

Drives: E92 M3 LSB/Black 6MT
Join Date: Mar 2007
Location: Montreal, Canada

iTrader: (4)

Garage List
2011 BMW M3  [9.34]
Quote:
Originally Posted by ward View Post
don't push the clutch pedal down if you don't have to

the amount of time you have that pedal pressed is directly related to how fast it wears out

coasting with the pedal pressed in does wear out your clutch and associated hydraulics
How can it wear out the clutch, it's completely disconnected from the driveshaft...I can understand hydraulics, but clutch?

Quote:
Originally Posted by omg516 View Post
I always thought "riding the clutch" was holding it at the friction point too long and not letting it fully engage.
Yes, it is...I'm talking about completely disengaging.
Appreciate 0
      06-19-2007, 11:02 AM   #8
ward
Major General
155
Rep
6,158
Posts

Drives: F
Join Date: May 2005
Location: T

iTrader: (0)

do a google search on "throw out bearing"

when the clutch is pressed, this part is wearing out slowly

don't touch the pedal if you're not shifting

that pedal should never be depressed for more than a second or so at a time
Appreciate 0
      06-19-2007, 11:06 AM   #9
GewoW
#thatsanicemovebro
GewoW's Avatar
Greece
202
Rep
3,920
Posts

Drives: E92 M3 LSB/Black 6MT
Join Date: Mar 2007
Location: Montreal, Canada

iTrader: (4)

Garage List
2011 BMW M3  [9.34]
Quote:
Originally Posted by ward View Post
do a google search on "throw out bearing"

when the clutch is pressed, this part is wearing out slowly

don't touch the pedal if you're not shifting

that pedal should never be depressed for more than a second or so at a time
Thanks a lot. I didn't know that. I guess it's time to change my ways!!!
Appreciate 0
      06-19-2007, 11:30 AM   #10
Revlis
Now With 33% MORE Sarcasm Free!
Revlis's Avatar
United_States
157
Rep
3,462
Posts

Drives: M4 i3 X3
Join Date: Feb 2007
Location: Phoenix AZ

iTrader: (0)

Quote:
Originally Posted by omg516 View Post
I always thought "riding the clutch" was holding it at the friction point too long and not letting it fully engage.
That is what Riding the Clutch means, or Like riding the brakes, simply applying a bit of pressure unintentionally. Usually by resting your foot over the clutch pedal and not paying attention.

Find it sometimes on Motorcycles too, folks 'THINK' they aren't applying any pressure to the clutch lever and are complaining of a slipping clutch. I mention removing fingers from in front of the lever... Many never come back.

But yeah riding the clutch is holding it in a little or using it to hold you on a hill or something silly like that... Bad Ju-Ju.
__________________
A BMW is Just a Car, it doesn't make you smart, handsome, clever, better, cool, or wealthy.
Appreciate 0
      06-19-2007, 11:42 AM   #11
Revlis
Now With 33% MORE Sarcasm Free!
Revlis's Avatar
United_States
157
Rep
3,462
Posts

Drives: M4 i3 X3
Join Date: Feb 2007
Location: Phoenix AZ

iTrader: (0)

Quote:
Originally Posted by ward View Post
do a google search on "throw out bearing"

when the clutch is pressed, this part is wearing out slowly

don't touch the pedal if you're not shifting

that pedal should never be depressed for more than a second or so at a time
Wow, sitting in traffic, at a light, etc wears the Throw out Bearing??? Keeping the clutch depressed for more than a second or so?

All news to me, Must make for an interesting driving experience.
__________________
A BMW is Just a Car, it doesn't make you smart, handsome, clever, better, cool, or wealthy.
Appreciate 0
      06-19-2007, 11:45 AM   #12
HyperM3
Too many Alex's, from now on, call me Beaufort
United_States
342
Rep
6,188
Posts

Drives: See Sig
Join Date: Feb 2007
Location: Lawrenceville, NJ

iTrader: (8)

Quote:
Originally Posted by ward View Post
that pedal should never be depressed for more than a second or so at a time
Thats a little extreme. Ive been driving stick for over 15 yrs and Ill sit at a red light sometimes with my foot on the clutch and in 1st gear for maybe 20-30 seconds. Ive never had any ill effects from this. Granted the car isnt moving either so maybe theres a different wear pattern if the car is stopped and the clutch is depressed vs. cruising and the clutch is depressed.
__________________
13 HD FatBob
17 A4 Glacier/Black 1st Edition/Pre+/Sport/EurocodeTMD/Racechip
16 S6 (gone),14 S6 (gone),14 S6 (gone),13 S6 (gone),10 S4 (gone)
07 335i(gone)
Appreciate 0
      06-19-2007, 11:52 AM   #13
Revlis
Now With 33% MORE Sarcasm Free!
Revlis's Avatar
United_States
157
Rep
3,462
Posts

Drives: M4 i3 X3
Join Date: Feb 2007
Location: Phoenix AZ

iTrader: (0)

Quote:
Originally Posted by HyperM3 View Post
Thats a little extreme. Ive been driving stick for over 15 yrs and Ill sit at a red light sometimes with my foot on the clutch and in 1st gear for maybe 20-30 seconds. Ive never had any ill effects from this. Granted the car isnt moving either so maybe theres a different wear pattern if the car is stopped and the clutch is depressed vs. cruising and the clutch is depressed.
He has to be talking about when moving or something... Otherwise it makes no sense. Cause all I've ever found sitting in Neutral to accomplish is being unable to get outta the way in time....
__________________
A BMW is Just a Car, it doesn't make you smart, handsome, clever, better, cool, or wealthy.
Appreciate 0
      06-19-2007, 12:17 PM   #14
dski69
Enlisted Member
0
Rep
33
Posts

Drives: 2006 330i, SG, Premium
Join Date: Mar 2007
Location: Las Vegas, NV

iTrader: (0)

Everytime you depress the clutch pedal, the throwout bearing puts pressure on the springs to disengage the pressure plate from the clutch plate. Coasting with the clutch pedal pressed in, or sitting at a red light with the clutch pedal pressed in will prematurely wear out the springs and throwout bearing, which means that the clutch will have to be removed. The clutch plate itself will get worn out or glazed over by slipping the clutch, which can occur when you release the clutch pedal at too high rpm's, or if you ride the clutch, wich means driving while your foot is resting on the clutch pedal. To maximize the life of your clutch and various assemblies, do not sit at a red light with the clutch pedal depressed, always shift into neutral and release the clutch pedal. Also, do not coast with the clutch pedal depressed, or ride the clutch.
Appreciate 0
      06-19-2007, 12:37 PM   #15
mkoesel
Moderator
United_States
7515
Rep
19,368
Posts

Drives: No BMW for now
Join Date: Jun 2006
Location: Canton, MI

iTrader: (1)

Quote:
Originally Posted by GewoW View Post
So, question is, do you completely depress the clutch or do you shift to neutral when coasting...and IS there anything wrong with coasting while completely depressing the clutch?
In my case I don't ever coast really. I leave the car in gear (first or second) until it slows almost to a stop. I don't take it out of gear until I am about to brake or already braking.
Appreciate 0
      06-19-2007, 01:14 PM   #16
GewoW
#thatsanicemovebro
GewoW's Avatar
Greece
202
Rep
3,920
Posts

Drives: E92 M3 LSB/Black 6MT
Join Date: Mar 2007
Location: Montreal, Canada

iTrader: (4)

Garage List
2011 BMW M3  [9.34]
So what are your tips for heavy traffic with stop-go movement? I mean, going to neutral is probably the best technique, but you're gonna have to go from 1/2 > N > 1. Then there's completely depressing the clutch while you stop and while stopped ot be able to start again quickly (in case traffic stopp momentarily)...

So I mean, I would do the neutral jig, but does anyone stay on 1st/2nd w/out neutral (only for traffic here...)
Appreciate 0
      06-19-2007, 01:23 PM   #17
HyperM3
Too many Alex's, from now on, call me Beaufort
United_States
342
Rep
6,188
Posts

Drives: See Sig
Join Date: Feb 2007
Location: Lawrenceville, NJ

iTrader: (8)

Quote:
Originally Posted by GewoW View Post
So I mean, I would do the neutral jig, but does anyone stay on 1st/2nd w/out neutral (only for traffic here...)
Yes. On my daily commute stuck in traffic I basically only use 2nd. Ill stay in 2nd going so slow it might stall but I wont put the clutch in unless Im coming to a complete stop. Even then I start back in 2nd without going to first.
__________________
13 HD FatBob
17 A4 Glacier/Black 1st Edition/Pre+/Sport/EurocodeTMD/Racechip
16 S6 (gone),14 S6 (gone),14 S6 (gone),13 S6 (gone),10 S4 (gone)
07 335i(gone)
Appreciate 0
      06-19-2007, 01:26 PM   #18
mkoesel
Moderator
United_States
7515
Rep
19,368
Posts

Drives: No BMW for now
Join Date: Jun 2006
Location: Canton, MI

iTrader: (1)

Quote:
Originally Posted by GewoW View Post
So I mean, I would do the neutral jig, but does anyone stay on 1st/2nd w/out neutral (only for traffic here...)
For heavy traffic I still put the car into neutral when coming to a stop even if I know I'll probably have to put it back into gear again in a few seconds.

But also you have to keep in mind the car will roll along just fine in 1st gear with the engine at idle RPM. That will allow you to creep very slowly. You can even press the brake and come to almost a complete stop for a second all while the car stays in gear.
Appreciate 0
      06-19-2007, 01:27 PM   #19
mkoesel
Moderator
United_States
7515
Rep
19,368
Posts

Drives: No BMW for now
Join Date: Jun 2006
Location: Canton, MI

iTrader: (1)

Quote:
Originally Posted by HyperM3 View Post
Yes. On my daily commute stuck in traffic I basically only use 2nd. Ill stay in 2nd going so slow it might stall but I wont put the clutch in unless Im coming to a complete stop. Even then I start back in 2nd without going to first.
Why don't you use first?
Appreciate 0
      06-19-2007, 01:42 PM   #20
GewoW
#thatsanicemovebro
GewoW's Avatar
Greece
202
Rep
3,920
Posts

Drives: E92 M3 LSB/Black 6MT
Join Date: Mar 2007
Location: Montreal, Canada

iTrader: (4)

Garage List
2011 BMW M3  [9.34]
Quote:
Originally Posted by mkoesel View Post
Why don't you use first?
I think because if he's in 1st, and traffic starts to pick up, or it's fast going, then he will have to upshift...but in 2nd, if tranffic is decently heavy (to a degree), he can still slow down a lot...

But I don't know. I guess I have to find the perfect balance btw 1st/2nd for traffic.
Appreciate 0
      06-19-2007, 01:57 PM   #21
HyperM3
Too many Alex's, from now on, call me Beaufort
United_States
342
Rep
6,188
Posts

Drives: See Sig
Join Date: Feb 2007
Location: Lawrenceville, NJ

iTrader: (8)

Quote:
Originally Posted by mkoesel View Post
Why don't you use first?
So I dont have to shift as much. My traffic goes from stop to 45 to stop to 45...you get the idea. If Im in 2nd, I dont need to keep shifting from 1st to 2nd. Theres enough torque in 2nd to get the car moving adequately. Just to test it, Ive started in 3rd too. There was a slight shudder but it moved along. Thanks PROcede
__________________
13 HD FatBob
17 A4 Glacier/Black 1st Edition/Pre+/Sport/EurocodeTMD/Racechip
16 S6 (gone),14 S6 (gone),14 S6 (gone),13 S6 (gone),10 S4 (gone)
07 335i(gone)
Appreciate 0
      06-19-2007, 02:02 PM   #22
GewoW
#thatsanicemovebro
GewoW's Avatar
Greece
202
Rep
3,920
Posts

Drives: E92 M3 LSB/Black 6MT
Join Date: Mar 2007
Location: Montreal, Canada

iTrader: (4)

Garage List
2011 BMW M3  [9.34]
Quote:
Originally Posted by HyperM3 View Post
So I dont have to shift as much. My traffic goes from stop to 45 to stop to 45...you get the idea. If Im in 2nd, I dont need to keep shifting from 1st to 2nd. Theres enough torque in 2nd to get the car moving adequately. Just to test it, Ive started in 3rd too. There was a slight shudder but it moved along. Thanks PROcede
That's exactly what I was gonna say. You probably had traffic that's either/or i.e 0 to a higher speed...Here, in MTL, it goes from 0-20-10-30-0-45-etc...I mean, it's hell...So I'd have to use 1st and 2nd...not just 2nd.
Appreciate 0
Reply

Bookmarks


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 -5. The time now is 11:53 AM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
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