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12-04-2017, 06:19 PM | #47 |
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Just got done doing this job. I was dreading dropping the subframe, but really not as bad as I was thinking.
Do you guys think an alignment is needed after dropping the sub-frame? I want to say no since I saw what looked to be plastic "alignment pins" for the subframe to slip on to where the front most k-member bolts attach to the frame.
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12-05-2017, 06:53 AM | #48 |
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I think you probably do given the fine degree of an alignment. In any event you will get the before and after printout so you will see any changes.
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12-08-2017, 05:38 PM | #49 | |
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On another note, I just upgraded to the Bimmerworld motor mounts after blowing both my OEM mounts at the drag strip(I had a super gnar launch with tons of axle/wheel hop which resulted in tons of NVH after the run. No NVH before the run). Loving them! Very minimal NVH added and really only in the 800-1000rpm range. Bonus pics of my blown mounts:
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12-08-2017, 06:02 PM | #50 | |
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Quote:
Photobucket pics will load.
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12-02-2018, 06:47 PM | #51 |
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Never done this before but would like to attempt it. It seems like I can perform this with one jack? I have 4 jackstands and tires to place under the sides of the car so I won't get crushed if there's a problem.
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12-02-2018, 08:09 PM | #52 |
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01-26-2019, 08:33 AM | #53 |
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I did this a few weeks ago. Thanks to everyone that did this before and posted their experience. It made the work easier. I have done motor mounts on a few other cars and its definitely one of the easier mount replacement jobs.
The work is as described in this thread. I used an engine support bar and a floor jack to raise and support the engine. As far as tools, I used an XL double box end Gearwrench to break the top nuts loose and a standard size combination wrench to run them off. I couldn't get the ratcheting end of any Gearwrench engaged to the top nuts due to the mounting bracket casting, so, it was a bunch of 1/8th or less turns for me. My original mounts looked as bad as some of the photos in here. I also had a very bad exhaust leak at the left donut gasket at the header, and I have speculated that the worn motor mounts caused the gasket failure due to the change in angle of the engine with the worn mounts. I installed the Bimmerworld group-n type mounts. Idle NVH was pretty intense for a little while. Sometimes loosening the mount nuts and letting the car idle for a little while helps with initial NVH, but it did nothing here. Someone posted in this thread, or one of the others, that idle NVH decreases as mileage is put on. I would say that is my experience and it is not too bad currently. I have about 1,300 miles on the new mounts. During driving there are more mechanical engine sounds, and at certain cruising RPM's the rear view mirror vibrates....its funny. It's probably not tolerable for everyone, but its fine with me. If the idle speed were 750-800 there would be no idle NVH. Thanks - Christian |
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07-21-2019, 07:13 AM | #54 |
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Drives: E92 M3 6MT Space/Black
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The very front subframe bolt on the driver side was weeping a little fluid shortly after loosening . Not enough to produce a single drop on the floor, but there it was nonetheless. Does anyone know if this is some type of bushing fluid? It’s thick and smells of gear oil in a way. Maybe the adjacent wishbone....?
Sorry if the photos are all sideways...but these are, of course, vertically oriented bolts. Thanks ! Last edited by CHE///MIST3; 07-21-2019 at 12:17 PM.. |
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07-22-2019, 02:43 PM | #55 |
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Never did find out where that fluid came from, oh well, i'll keep an eye on it. The new mounts are in! ...for both the engine and manual transmission. What a difference. The car feels much more smooth, shifts are easier, little to no vibration and mechanically a bit quieter. It's a 2009 with 86,000 miles. Took me about 4 hours to do everything, but at least a 1/3 of that was fumbling around to take out the old motor mounts and fit the new ones in. I was so scared of backing out the subframe bolts, but that doesnt even matter, everything stays in place, regardless.
Engine mounts were super hard and collapsed by about 3/8", the transmission mounts were a bit hardened with age compared to the new ones. As far as I can tell, I don't even need an alignment, so I got a bit lucky here. Very glad I did these, and thanks for the amazing DIY instructions from this thread ! GM |
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03-25-2020, 10:16 PM | #58 |
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Mine after 204000 miles, replaced them with Rein engine mounts they're made in Germany aswell
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06-06-2020, 12:21 AM | #59 |
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Does anyone have any pics of how you support the motor to lower the subframe? Just want to make sure I have a good understanding of where and how I need to support things.
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06-09-2020, 08:22 AM | #62 |
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01-31-2021, 07:11 PM | #63 |
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Need a diagram?
Am getting ready to do this job in a couple of weeks. Am not sure I completely follow the K-frame and subframe connections. Does anyone have a link to the suspension diagram which would show these parts? I looked around a couple of site but they did not call them out.
Just want to be 1000% sure I am loosening the right parts and not putting stress in places it does not belong! And...sorry to sound stupid...why does this affect the front end alignment? Can't quite get the picture in my head of what is going with that. Last edited by MTM; 02-01-2021 at 08:24 PM.. |
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03-08-2021, 12:19 PM | #65 |
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Thanks to all the contributors for this post. Did the service this weekend and the reference was invaluable!
My findings from my '09 coupe with 96k miles: - Definitely remove the wired sensor on the driver's side - The ratcheting 13mm box end wrench suggestion was gold! Worth every penny. - I managed to strip the threads in the angled bolt hole of the frame. Nasty. But successfully cleaned it up with an M12 1.5 pitch tap (whew!). - The new mounts were about 1" higher than the worn older mounts...took a LOT of wiggling (and some cursing) to get them into position but persistence finally won the day - I also replaced tranny mounts...really simple job...old mounts still looked quite good so not sure it was really needed - I have the aluminum underbelly tray (which I love!) but makes it a little more of a pain to remove the skid pan. |
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07-10-2021, 10:46 PM | #66 |
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Did my mounts this weekend, replaced with the Bimmerworld ones. There is added NVH, but for me its nothing crazy. If you have issues with vibrations and added noise, stick with the stock mounts. Thanks to the contributors, definitely helped me out. The only thing I will add is most of the leverage to remove the mounts will come from the rear of the subframe (at least in my experience). You will have to back out all the subframe bolts plenty low. It took me 45 minutes back and forward from driver to passengers side to figure that out, but finally got it.
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