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  1. #1
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    Sped 2+ & SMFW Engagement Issue

    So I just finished installing my Spec 2+ non-sac clutch and steel SMFW. The clutch engages at the top of the pedal extension. It seems the clutch is not fully engaging though because if I give it anything more than 5-10% throttle it revs (slips) up. I believe as the clutch breaks in the pedal would normally move up correct? So in my case only get worse? Any advice or ideas? Worse case scenario; can I use the stock TO bearing (shorter, so effectively shift pedal engagement lower) with the Spec clutch? Regardless, I will be calling SPEC tomorrow...

    Edit: Also note how my SPEC TO bearing sits flush while the stock once can pivot on the lever arm.

    Pics from the install... I have more but I will save those for the build thread once I get it running well:

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    Last edited by TCW; 03-06-2013 at 01:52 AM.

  2. #2
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    That was one of the issues I reported in the other Thread.

    http://www.bimmerboost.com/showthrea...831#post403831

    I think the best option is to use the original TO bearing with the original height setting.

    I gathered with the original TO bearing with the Tall mounting position and with the Spec bearing the fork has no play at all and I don't think that's correct. Because the TO bearing is then always putting pressure on the pressure plate fingers.

    And as you mentioned, when the friction disc is wearing down the pressure plate finger are moving out a bit and putting even more pressure on the TO bearing and fork.
    BMW 335i xDrive MT
    COBB Stage2+|Wagner FMIC|CPe-Downpipes|BMW Performance Exhaust

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    I just contacted SPEC, they told me to put more miles on it and see it the engagement gets better. I also shared this thread with them to show them the pictures I took. Hoping to get this resolved soon.

  4. #4
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    Let's see if we can get spec to take a look:

    @SPEC-01 @SPECis

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    I have the same set up and FWIW, the initial engagement for me was really close to the floor and now after ~450 break in miles the engagement is now closer to stock, about 2 inches off the floor, I'd actually prefer closer to the floor engagement but that's another story...I also did not experience the slipping you describe either, everything felt nice and solid, with expected chatter etc.
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    Click here to enlarge Originally Posted by cadillacgrills Click here to enlarge
    I have the same set up and FWIW, the initial engagement for me was really close to the floor and now after ~450 break in miles the engagement is now closer to stock, about 2 inches off the floor, I'd actually prefer closer to the floor engagement but that's another story...I also did not experience the slipping you describe either, everything felt nice and solid, with expected chatter etc.
    That is what I am worried about, the clutch engagement moving farther up as mine is at the very top of the pedal travel. They told me as it breaks in it should get better... but I am thinking it will get worse based off of experiences like yours.

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    yeah, that just seems like the complete opposite scenario that should be occurring...i've had several clutch upgrades with several different platforms, and I've always experienced a closer engagement at the floor initially with it getting "better" (off the floor) over time..not the other way around.

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    SPEC has confirmed that I can use the stock TO bearing with the clutch. So I think I will swap that out tonight when I get home (will be a late night......) and hope for the best. Also I will be using the lower option on the stock TO bearing (which is what it is stock.)

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    Man, too many weird issues with spec stuff lately...let us know how things pan out
    [02/07 E92 335i 6MT] - Under Construction

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    Click here to enlarge Originally Posted by lorddrinkalot Click here to enlarge
    That was one of the issues I reported in the other Thread.

    http://www.bimmerboost.com/showthrea...831#post403831

    I think the best option is to use the original TO bearing with the original height setting.

    I gathered with the original TO bearing with the Tall mounting position and with the Spec bearing the fork has no play at all and I don't think that's correct. Because the TO bearing is then always putting pressure on the pressure plate fingers.

    And as you mentioned, when the friction disc is wearing down the pressure plate finger are moving out a bit and putting even more pressure on the TO bearing and fork.
    What was the resolution for you? What did Spec do?

  11. #11
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    Click here to enlarge Originally Posted by 654 Click here to enlarge
    What was the resolution for you? What did Spec do?
    Spec offered so send a new TO bearing they have made with 2 height settings. But I declined, rather use the stock one.

    But I had another problem which caused the clutch not being able to disengage.


    They did send me a new friction disc. But has not arrived yet. So car is still sitting without Tranny. Soon 3 weeks.Click here to enlargeClick here to enlarge
    BMW 335i xDrive MT
    COBB Stage2+|Wagner FMIC|CPe-Downpipes|BMW Performance Exhaust

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    Stock TO bearing fixed it. Ill post more info tomorrow.

  13. #13
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    Click here to enlarge Originally Posted by TCW Click here to enlarge
    Stock TO bearing fixed it. Ill post more info tomorrow.
    Glad it worked after all!
    BMW 335i xDrive MT
    COBB Stage2+|Wagner FMIC|CPe-Downpipes|BMW Performance Exhaust

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    Got my replacement friction disc today. Just put the whole thing on the press and its now disengaging.
    Will put it in later today. Wish me luck!
    BMW 335i xDrive MT
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    1 out of 1 members liked this post. Yes Reputation No
    So I replaced the SPEC TO bearing with the stock TO bearing and the engagement is in the middle of pedal travel now. Looking forward to breaking it in and getting it dyno'd shortly. Here are some pics comparing the two.
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  16. #16
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    Did you use the OEM clutch fork?
    Does SPEC provide their own fork?
    [02/07 E92 335i 6MT] - Under Construction

  17. #17
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    I'm swapping out my current kit for a spec 3+ and a steel flywheel. Here's what's been done at SPEC for all N54 clutches since the last batch, just got this from them:

    Click here to enlarge Originally Posted by spec
    Our latest TO bearing is the exact dimension of the stock 2 step heights, so anyone with the latest bearing can install on low or high and it will provide the same stack-up. Our shop 335is is using the low setting and it has broken in nicely. It started low, like most new clutches, and by 300 miles has gone right up to the middle, where it will stay most of the life (break-in is when the fingers height adjust the most). The middle setting bearing has been by request only and so far feedback has been good there too. But, any kit shipped in the last few weeks will have an exacting bearing dimension to stock high and low, so no sense in sourcing a stock TO bearing. The new bearings even have the rounded contact area like stock.
    I'm getting mine in the mail today. I'll post up pics before/during install so you guys can see what's going on.
    Click here to enlarge

  18. #18
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    Click here to enlarge Originally Posted by nitehawk Click here to enlarge
    Did you use the OEM clutch fork?
    Does SPEC provide their own fork?
    I used my original stock one and the SPEC kit did not come with a fork. Also there was a slight almost grinding feel when the SPEC TO bearing would first engage and I am thinking this is because the bearing I had was flat so that as the fork angle changed it was rubbing against the PP fingers. This feeling is gone with the stock TO bearing.

  19. #19
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    My car is moving again.
    Ne disc did the trick. I'm also using the original TO bearing on the short setting.

    did 30km works fine, smells a bit but I think thats ok.
    Also some rattle but hey...should settle down.
    BMW 335i xDrive MT
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    Click here to enlarge Originally Posted by lorddrinkalot Click here to enlarge
    My car is moving again.
    Ne disc did the trick. I'm also using the original TO bearing on the short setting.

    did 30km works fine, smells a bit but I think thats ok.
    Also some rattle but hey...should settle down.
    What was wrong with the old disc?

  21. #21
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    The disc was too thick. I think there are pictures in the other Thread!
    BMW 335i xDrive MT
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    1 out of 1 members liked this post. Yes Reputation No
    Interesting
    I have a spec 2 pplus and sometimes I cannot get it out of gear after parking.
    When downshifting, sometimes I have to do it twice, since the first time it would not engage.
    also shoving it in first gear can be a problem since it accepts it 90 % of the time.
    most annoying though is reving the car higher to initially start off cause of the LW flywheel,
    Cobb tuned, spec2+, wavetrac, DCI, ARdp's, AA fmic, forge DV's, M3 links & Sways, bbs lm's, bunch of exterior mods, and one happy BMW driver

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