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      02-13-2018, 08:27 AM   #133
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Anyone have confirmed the actual disengangement of clutch with 3 washers by observing the clutch window is under the car yet?

I removed mine last week and missing the BMS clutch stop but at the same time paranoid to use it... Wish I have a hoist available in my garage...
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      02-14-2018, 05:26 PM   #134
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I am not aware of a clutch window, but I am not an expert (yet) on my car. However, if it does have a window I don't believe that you'll be able to see if it is completely disengaging by just looking at it.
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      02-19-2018, 10:07 AM   #135
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I'm really, really useless at mechanics but I managed to install mine all on my own in about 3 hours. I'm not sure how to put the clutch pedal back in place, or the brake pedal or gas pedal LOL. Actually it took me 3 minutes and I love it (3 washers).
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      04-02-2018, 06:30 PM   #136
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Has anyone confirmed full disengagement with this mod? I'm holding the part in my hand right now, but concerned I may be doing unseen damage.
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      04-03-2018, 09:34 AM   #137
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Quote:
Originally Posted by Rupes View Post
Has anyone confirmed full disengagement with this mod? I'm holding the part in my hand right now, but concerned I may be doing unseen damage.
bump
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      04-03-2018, 03:33 PM   #138
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The previous posts in this thread mention checking a sensor (or two) and how to do a clutch drag test. Are you looking for more confirmation than that? (Serious question - not trying to be sarcastic).
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      04-03-2018, 05:28 PM   #139
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Here's another thread for additional information: http://f87.bimmerpost.com/forums/sho...php?p=22708623
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      04-03-2018, 06:05 PM   #140
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Quote:
Originally Posted by Rupes View Post
Has anyone confirmed full disengagement with this mod? I'm holding the part in my hand right now, but concerned I may be doing unseen damage.
Would really like to know as well.
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      04-03-2018, 09:04 PM   #141
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Quote:
Originally Posted by M2guru View Post
The previous posts in this thread mention checking a sensor (or two) and how to do a clutch drag test. Are you looking for more confirmation than that? (Serious question - not trying to be sarcastic).
Also mentioned in this thread is someone who experienced abnormal wear in a relatively short period of time after thinking the clutch was fully disengaged. I don't have the expertise to determine if a simple test I can do myself is sufficient.
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      04-04-2018, 12:56 AM   #142
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I went back to stock. I had 1 washer installed and it felt like the clutch was dragging from time to time, especially when shifting from 2nd to 3rd at 6k+ rpm. After going back to stock it feels less notchy.
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      04-04-2018, 05:40 PM   #143
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Quote:
Originally Posted by Rupes View Post
Also mentioned in this thread is someone who experienced abnormal wear in a relatively short period of time after thinking the clutch was fully disengaged. I don't have the expertise to determine if a simple test I can do myself is sufficient.
There was no mention of abnormal wear that I could find in the thread - just the personal experience of less notchiness while shifting with less washers and another person's assumption that the notchiness is related to the clutch not fully disengaging.

If you want to be safe, don't use it. I am using it but with one washer because I feel that the clutch throw after I "think" the clutch is disengaged is sufficient - however, when it is really cold outside (like around 0-10F) and the car has just been started, the gears can slightly grind and the shifter feel especially notchy for about a mile. I am assuming that the synchro are not sliding as much as when it is warmer due to the thick fluid at the colder temps. I say this because I am considering replacing the stop with the stock one for at least the cold winters my car and I experience.

Last edited by M2guru; 04-04-2018 at 05:53 PM..
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      04-06-2018, 06:55 AM   #144
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BMS stop arrived this morning and just fitted it. Simple enough to do but pushing the new stop in was like thumbing in a softy and required some two-handed superhuman strength

With all 3 shims in place the car will only start with a firm push of the pedal so will have to see what gear changes are like when I take it for a spin later.

Last edited by Peasley; 04-06-2018 at 07:09 AM..
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      04-06-2018, 12:22 PM   #145
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I'm running 2.5 shims on mine (one shim cut in half) and feel it's perfect - YMMV
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      07-24-2018, 01:15 PM   #146
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F80 M3 owner here (couldn't find another BMS clutch stop thread in that group that is as thorough as this one), just installed last night after having it just sit around for a year, completely forgot that I ordered one.

Definitely removes dead space, and engagement happens quick which I like. I used 2 washers (removed 1).

For those concerned with whether the clutch is fully engaging/disengaging, one simple and general way:
- Start the car in neutral, and on a relatively flat surface/road (where car is not rolling with foot off the brake)
- Put it into first, and slowly let clutch out without any throttle input
- When the car starts to inch forward, clutch is engaging flywheel

Before the car started to move, I noticed there's still a good amount of travel before it happens. I'd like to think that this means there's still full engagement/disengagement but someone can prove me wrong.
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      07-24-2018, 03:46 PM   #147
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Gear Grind

These washers don't change the point of clutch engagement they just reduce the amount of dead space from the point of engagement until hitting the "floor." I purchased my car with 20k km's and it occasionally grinds slightly between second and third gear. The previous owner installed the washers (don't know how many.) I previously asked about gear grind on the forum with no concrete answers until now. I find it hard to believe that the my "grind" is due to the BMS kit but who knows. Do any of you manual manly men have any notchiness?
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      07-24-2018, 08:06 PM   #148
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Quote:
Originally Posted by shamrock View Post
These washers don't change the point of clutch engagement they just reduce the amount of dead space from the point of engagement until hitting the "floor." I purchased my car with 20k km's and it occasionally grinds slightly between second and third gear. The previous owner installed the washers (don't know how many.) I previously asked about gear grind on the forum with no concrete answers until now. I find it hard to believe that the my "grind" is due to the BMS kit but who knows. Do any of you manual manly men have any notchiness?
If the washers don't allow you to completely disengage the clutch, then it does change the point of engagement. If your clutch isn't completely disengaging, then the synchronizers are doing extra work (extra wear) that will prematurely wear the synchronizers out. Partially worn synchronizers will cause occasional grinding. There are more factors than just the clutch stop that can cause wearing of synchros, but this is one that can easily be eliminated reduced/eliminated.
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      07-24-2018, 11:59 PM   #149
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May I assume that the grinding is due to the BMS kit? Does anyone else have grinding?
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      07-25-2018, 04:55 AM   #150
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Quote:
Originally Posted by M2guru View Post
If the washers don't allow you to completely disengage the clutch, then it does change the point of engagement. If your clutch isn't completely disengaging, then the synchronizers are doing extra work (extra wear) that will prematurely wear the synchronizers out. Partially worn synchronizers will cause occasional grinding. There are more factors than just the clutch stop that can cause wearing of synchros, but this is one that can easily be eliminated reduced/eliminated.
Not really accurate.

The engagement occurs with the same amount of clutch pedal throw or travel that it did with or without the stop.

The stop merely limits the pedal travel with the goal of eliminating excess or unnecessary pedal travel.

If the travel is reduced too much with the stop, then the clutch would not completely disengage.

Again, engage / disengage would occur at the same points in the pedal travel. The question is whether or not the pedal is free to reach those points or not with the stop installed.
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      07-25-2018, 05:10 AM   #151
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Quote:
Originally Posted by randyt View Post
Not really accurate.

The engagement occurs with the same amount of clutch pedal throw or travel that it did with or without the stop.

The stop merely limits the pedal travel with the goal of eliminating excess or unnecessary pedal travel.

If the travel is reduced too much with the stop, then the clutch would not completely disengage.

Again, engage / disengage would occur at the same points in the pedal travel. The question is whether or not the pedal is free to reach those points or not with the stop installed.
You're right that my first sentence is incorrect - the remaining is correct. The point of engagement will not be impacted with the clutch stop. The clutch stop may prevent a person from fully disengaging the clutch causing the premature wear. Thanks for clarifying!
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      07-25-2018, 12:44 PM   #152
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I bought it and never installed it. Don't think its worth the (granted small) risk. Have driven the car enough now that the stock clutch take-up point just feels normal.
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      07-25-2018, 12:58 PM   #153
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Quote:
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I bought it and never installed it. Don't think its worth the (granted small) risk. Have driven the car enough now that the stock clutch take-up point just feels normal.
Seems everyone on the f8x platform likes on average 2.7 shims.
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      07-28-2018, 03:22 PM   #154
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Gang I was the one who had trouble with my E36M3 after a clutch stop was installed.

It took hundreds of Auto X runs & track events but I eventually had trouble shifting from 2nd to 3rd gear.

It got so bad that I had to swap in a used tranny.

I wasn't trying to scare anyone, just letting you know that they are an awesome upgrade but you need to make sure that you aren't to aggressive with the adjustment.

In my case I had no idea that I was slowly damaging the synco cone..

I know tons of drivers who are fine with this mod.

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