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02-06-2015, 05:47 PM | #23 |
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So was there any fluid from the leak visible with the "felt" cover on the bottom of the trans? Or did you need to remove the felt cover to see any evidence of a leak?
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02-06-2015, 05:48 PM | #24 |
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You have to remove the felt cover to really see what is going on. It doesn't take long. I'm going to start checking every oil change.
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02-06-2015, 07:09 PM | #25 | |
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A cheap gasket leak (which is probably what this is, and it should have been addressed when noticed by the install crew), is far cheaper than replacing clutch packs and servos that wear out far more so on the manual transmission. Then you have folks like that guy on the M4 forum that money shifted and blew his whole engine. $27K repair bill please. No one is denigrating your old transmission, but you 6MT4LIFE guys just can't help pick and tear at any perceived fault in "that gosh-derned new fangled technology frem dem nazi krauts and kids today with their pants down with their rap music durrperrdurrr". It's pretty pathetic. Why don't you go and and play with your stick you enjoy so much, and let this guy use the forum as it is intended, to get feedback and help getting his ride back on the road? Your attitude is a cancer. |
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02-06-2015, 08:00 PM | #26 |
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OP,
FYI, there are two gaskets that can leak. The bottom probably isn't your culprit. There is a side and top gasket that leak. This requires the entire transmission to be dropped. I had mine done under warranty. My parts list and labor hours is posted somewhere on one of the DCT leaking threads. I don't know how much out of warranty you are however maybe speak to a SA to see if BMW will goodwill the leaks. |
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02-06-2015, 08:03 PM | #27 | |
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Wasn't there a group hug emoticon somewhere? With everything, there's pro's and con's. |
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02-06-2015, 08:57 PM | #28 | |
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I'll try to dig around and find your thread. Thanks for the heads up. Does anyone happen to remember off the top of their head how many hours it takes to R&R the transmission?
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02-06-2015, 10:59 PM | #29 |
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Read this and PM Redpriest. He's a Bay Area guy apparently and got goodwill from BMW.
http://www.m3post.com/forums/showthr...T#post16308627 Here's my info Hopefully I can contribute My vehicle just underwent gasket replacement surgery My DCT was showing signs of a leak. The dealer replaced the side, top and bottom gaskets. This was not covered under the factory warranty (expired) and my failure happened prior to 47K miles but my warranty passed the time allowed (2010 MY) My extended warranty (MaxCare) covered this from the BMW dealer directly. The repairs did require the full removal of the DCT transmission as you cannot get to the top or side gaskets without removing the transmission. Parts were $762 Labor was $1769. Not sure what the warranty dealer rate/hr is but if you assume $100/hr, it's about 18 hours. Parts replaced: Desc. - PN - $$ - Qty Hydraulic Cover - 28607842855 - $305.56 - 1 Gasket - 28607842856 - $45.03 - 1 O-Ring - 28607849555 - $28.80 - 1 Countersink Screw - 28107842386 - $4.29 - 28 Oil Pan - 28107842385 - $176.17 - 1 O-Ring - 17211742636 - $0.98 - 3 O-Ring - 17222245358 - $1.27 - 2 DCTF-1 1L Oil - 83220440214 - $40.57 - 2 Dealer did a great job and MaxCare wasn't as scary as the bad online reviews made it out to be. Of course YMMV |
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02-06-2015, 11:01 PM | #30 | |
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Extra weight? How much more does it weigh? 30 lbs? 40 lbs? The weight penalty is made up in shift speed plus more. Look at the times of supecharged dct times vs supercharged manuals. No where close. Lower torque capacity? I've personally have driven my dct trans very hard and hold the record for the quickest e9x. I have made a pass on a hoosier tire. Zero issues! There are guys such as Drew making 750 whp and his trans still doesn't slip. Tell me how your torquey m3 needs more torque capacity
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02-06-2015, 11:42 PM | #31 | |
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The only thing that requires removal of the trans in that parts list is the replacement of the mechatronics unit cover gasket on the right side. That is definitely something that cant be done in the vehicle. |
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02-06-2015, 11:48 PM | #32 | |
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02-07-2015, 12:14 AM | #34 | |
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Asked my good BMW mechanic friend who now runs an indy how much time this would take, he said it's about 4-5 hours of labor, so $500-600 before buddy discount. Damn stealership prices are outrageous. Good thing MaxCare covered it. On the other hand, if anything ever crops up with the transmission again, you can blame the dealership and they will probably goodwill you a new one. |
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02-07-2015, 12:17 AM | #35 | |
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02-07-2015, 12:18 AM | #36 |
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02-07-2015, 02:15 AM | #37 | |
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Mines still at the dealer now since 8 weeks but this has to do with wrong oil used after leak fix. Different story which I'll finish in another thread when job completed...: |
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02-07-2015, 12:59 PM | #38 | |
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dct adds 45 extra pounds over 6MT which is half an extra tank of gasoline, or 3 times the difference in weight between 4 light forged wheels and ZCP wheels. Not a lot but not negligible either. The dct is a Getrag unit and as per its designers it is not suggested to handle more than 520NM ( = 383 lb/ft). the qualifier gears part will start cut into each other when over 520NM their hardness max HV600-1500. The 6MT is made by ZF and is rated for more than 650 NM ( 480 lb/ft ) far more than the dct. That's specs. So remember, whatever torque your dct was able to withstand, the manual 6MT will always be superior with +100 lb/ft more. the lack of involvment is another topic but it's already enough said. |
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02-07-2015, 01:33 PM | #39 | |
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The rating by Getrag is based on the clutch capacity, not the gearbox. The same gearbox is used for all BMW DCTs and is rated at as much as 700nm (518ft/lbs) in the M5 and M6. I have worked on and upgraded numerous BMW DCT transmissions since 2012 and have yet to see a gear box failure. I am also one of the fortunate few to have ever disassembled a complete BMW DCT to study it, look for and address the weak areas. Im not saying it wont at some point, but as of right now, no one has broken a gear. Last edited by SJL Custom; 02-07-2015 at 01:44 PM.. |
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02-07-2015, 01:50 PM | #40 |
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I understand totally what V8Fun is saying though. I think a manual transmission will always be more reliable than any type of automatic whether it's an old school torque converter or SMG, DTC, DSG etc simply due to less moving parts.
OEM specs provided by V8Fun are based on the supplier using stock parts. Of course when modified with SSP goodies, the DCT would be able to handle higher loads however the argument needs to be based on a stock DCT with high horsepower engines. I would agree that the stock DCT would wear much faster or be subjected to greater risk of failure. I like and prefer my DCT over manual. I know how to drive a manual as that's what I used to drive for many years however with bay area traffic and me just getting used to some type of "automatic", I've grown fond of this type of technology. To each their own. |
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02-07-2015, 05:34 PM | #41 |
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I went to check the fluid level of my transmission and it was completely full. As soon as I removed the fill plug tons of fluid came out.
Unfortunately, the transmission has been freaking out even with normal driving. While I was stopped the transmission malfunction light popped on and I had to restart the car in order to get the car into gear and drive. Should I even bother doing a fluid flush and filter replacement or just just drop in a whole new (used) transmission? Could my fluid be so old that it's causing the transmission to overheat and do weird things? Or is the entire thing just done/dead? The weird thing is this started happening immediately after the test pipe install. I'm sure it's more coincidence than correlation.
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02-07-2015, 07:05 PM | #42 | |
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I don't have a dct, and don't have any experience diagnosing problems etc., but if in your shoes I definitely wouldn't do something as drastic as replacing the transmission yet. You've bought the fluid, gaskets etc., change them! See how it works out. People have plenty of issues with the 6mt grinding on first shift when cold (I know not related to this) and changing fluid helps. Take things in steps and it may work out fine. What's the worst that could happen? Tranny blows and your stuck somewhere, is that really a big deal? For my individual situation its not. I have a daily so I'd just need to tow the M and get the new tranny after that. I don't know your situation and if you had a catastrophic failure while out and about it may put you in a bad spot... Good luck and I'm following to see how it works out for you! |
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02-08-2015, 06:07 AM | #44 | |
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Let us know what you find out. |
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