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12-10-2012, 07:39 PM | #1 |
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DCT clutches replacement on SC E9x M's
I'm looking foward to SC my E90 (probably ESS VT2-585) and wanted to hear from fellow members how common/frequent the DCT clutches need to be replaced on SC cars. I know wear will be greater but wanted to know if this is a common issue. Dragstrip experts are welcomed to chime in, as I'm intrested in hitting the strip (hopefully) 3-4 times a year as well as 2-3 1/2 mile events a year. Thanks in advance.
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12-10-2012, 07:48 PM | #2 | |
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16 F82 M4 DCT - ZCP - JB4 - 556WHP / 570WTQ
08 E92 M3 DCT - Bolt Ons - 60-130MPH 10.71s - 11.88 @ 118MPH - 377WHP ESS VT2-625 SC 60-130MPH 6.80s - 11.30 @ 129.3 MPH 586WHP / 379WTQ ESS VT3-750 - 60-130MPH 6.14s - 10.81 @ 135.13 MPH 690WHP/463WTQ Shift-S3ctor E92 M3 - 1/2 Mile Trap Speed WR - 174.13 MPH |
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12-10-2012, 07:58 PM | #3 |
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Thanks Drew. I don't remember reading it, have you replaced yours?
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12-10-2012, 08:15 PM | #5 |
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Thanks for the info!
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12-10-2012, 08:21 PM | #6 |
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I have a few hundred LC on mine and its fine but don't plan to be running the strip much more. Your fine, the DCT can handle 650whp with no problem and no bolt kit makes that kind of power unless you do a low compression build
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12-11-2012, 09:38 AM | #7 |
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Thanks!
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12-11-2012, 11:24 AM | #9 | |
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I have had some tuners tell me yes above 580whp, and I have had some tell me none required.
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12-11-2012, 11:41 AM | #10 |
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When you floor the gas pedal in DCT it does a 3000rpm clutch drop and it can be pretty violent. LC launches at 5500 but it doesn't drop the clutch but rather the trans slips on purpose to reduce wheel spin. I think LC is a lot less stressful on the tranny than most think vs the clutch drop from a dead stop in 1st gear
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12-11-2012, 11:59 AM | #11 | |
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LC is really just slipping the clutch more, whereas just dumping is def less wear on the clutch but def harsher on the driveline. The fine point in between is where its at! |
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12-11-2012, 12:09 PM | #12 | |
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I replaced the stock clutches with SSP Kevlar, and we had issues, then eventually had to replace the transmission, so I bought a used one with low miles and just kept the stock clutches, so far it's holding well.
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16 F82 M4 DCT - ZCP - JB4 - 556WHP / 570WTQ
08 E92 M3 DCT - Bolt Ons - 60-130MPH 10.71s - 11.88 @ 118MPH - 377WHP ESS VT2-625 SC 60-130MPH 6.80s - 11.30 @ 129.3 MPH 586WHP / 379WTQ ESS VT3-750 - 60-130MPH 6.14s - 10.81 @ 135.13 MPH 690WHP/463WTQ Shift-S3ctor E92 M3 - 1/2 Mile Trap Speed WR - 174.13 MPH Last edited by DLSJ5; 12-11-2012 at 01:45 PM.. |
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12-11-2012, 12:41 PM | #13 | ||
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I think I might need a new clutch due to this very reason from our previous track event I did about 50 launches starting in first. Reason ? When I was using launch control I was doing standstill burn outs due to tires not being sticky enough or at least not being Drag radial tires . The car is at the dealer getting check out but i think it needs a new clutch . All odd gears slip, have a sloppy jerky shift into the odd gears whereas the even ones are smooth ... You play you pay & the messed up part is I always preached not to do what I did but when your in the moment and excited focusing on your 60' ft's you can easily forget or do something stupid as I did ... |
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12-11-2012, 12:47 PM | #14 | |
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no I def get it, but a violent launch is gonna kill the drietrain regarldess; LC slips the clutch enough, but that in turn is more wear on the clutch faces. In any event wheelspin is better than breaking Hope car gets fixed |
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12-11-2012, 12:57 PM | #15 | |
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12-11-2012, 01:34 PM | #16 |
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I dont think his clutches are slipping, I think his transmission is similar to mine and something else is up. My car under WOT doesn't slip, but the tranny is notchy/clunky as hell. I hope he gets it fixed because I'll follow and do the same if we can find out what it is! If the tranny is slipping it would slip at high rpm - I think this "slip" zim is describing is the same delay and subsequent clunk that I experience when shifting at like 2-4krpm. He knows what I'm talking about I told him about it on the phone the other night. Scott your DCT is fine? You're lucky man! lol....what I'm experiencing doesn't effect performance, however it ruins the smoothness of the car around town at any other time than when I race (or used to for that matter). It almost feels as if something is loose or not sitting right - it could be something wrong with the tranny as well as the drivetrain. Those launches we do destroy both.
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12-11-2012, 02:25 PM | #17 | |
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12-11-2012, 02:53 PM | #18 | |
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you running stock trans mounts? wouldn't hurt upgrading esp if you're launching the car |
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12-11-2012, 06:01 PM | #19 | |
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12-13-2012, 01:29 AM | #20 |
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You will not need to worry about your clutches with the VT2-585 kit. Get it and enjoy it!
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12-13-2012, 07:55 AM | #21 |
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It's been confirmed I need a new clutch !
Pretty stupid of me , I should have just bought MT's and I could have avoided this Let this be a lesson for all you DCT OWNERS use launch control !!! Btw the car shifts just fine it's the jerkiness that I don't like when it shifts into the Odd gears that's why I'm replacing my clutches cause other wise I can keep the existing one and be just fine but I like my smooth shifting |
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12-13-2012, 08:38 AM | #22 | |
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