Replacing Motor Mounts

Ferg · 02-05-2014, 05:58 PM

Anyone replaced the motor mounts on the N52 XI version? I got the passenger side off very easy; however, I don't see how to take the driver's side out without removing the front axle (no room to remove the mount). Ideas?

cuco · 02-24-2014, 07:40 PM

Do you have any shop manuals to use as reference? If not them get some, bentley, haynes etc.

andrey_gta · 02-24-2014, 08:39 PM

guys, FYI 335IS has a new part number for the right side mount. N52 uses n54 n55 mounts. People report improvements

02-24-2014, 09:12 PM

http://www.e90post.com/forums/showthread.php?p=14627536

Casca · 02-24-2014, 09:30 PM

Quote:

Originally Posted by andrey_gta

guys, FYI 335IS has a new part number for the right side mount. N52 uses n54 n55 mounts. People report improvements

I understand having stiff motor mounts may help transfer power better, but I think you're probably more likely to notice the extra vibration than the better power transfer. Not really something I want to put up with. Personally, I decided to just go with the OEM spec motor mount for my model.

Ferg · 02-25-2014, 12:20 PM

Quote:

Originally Posted by cuco

Do you have any shop manuals to use as reference? If not them get some, bentley, haynes etc.

Have the Bentley manual and frankly find it quite basic. I does not cover anything but routine maintenance (perhaps a little more). Definately not worth the cost of the manual.

Ferg · 02-25-2014, 12:24 PM

Quote:

Originally Posted by index1489

http://www.e90post.com/forums/showthread.php?p=14627536

Don't get me wrong, non-XI models, motor mounts are a breeze, including the passenger side of an XI. I'm trying to figure out how to get the driver's side motor mount out. Seems the drive axle on the XI is in the way.

bvanderhaar · 10-01-2014, 08:55 AM

Quote:

Originally Posted by Ferg

Don't get me wrong, non-XI models, motor mounts are a breeze, including the passenger side of an XI. I'm trying to figure out how to get the driver's side motor mount out. Seems the drive axle on the XI is in the way.

Ferg - did you ever find a DIY for this? I'm concerned mine may be bad but am looking for any information before I jack the car up.

chris82 · 10-01-2014, 12:16 PM

Quote:

Originally Posted by andrey_gta

guys, FYI 335IS has a new part number for the right side mount. N52 uses n54 n55 mounts. People report improvements

Quote:

Originally Posted by Casca

I understand having stiff motor mounts may help transfer power better, but I think you're probably more likely to notice the extra vibration than the better power transfer. Not really something I want to put up with. Personally, I decided to just go with the OEM spec motor mount for my model.

But let me get something straight here. How would a 328i w/335is motor mounts or 335i w/335is motor mounts have any more NVH than a 335is?

mlifxs · 10-01-2014, 12:23 PM

Quote:

Originally Posted by bvanderhaar

Ferg - did you ever find a DIY for this? I'm concerned mine may be bad but am looking for any information before I jack the car up.

i believe pelican parts website has a diy on motor mounts along with comments from folks who've tried and hit issues.

andrey_gta · 10-01-2014, 12:46 PM

Quote:

Originally Posted by Chrisar82

But let me get something straight here. How would a 328i w/335is motor mounts or 335i w/335is motor mounts have any more NVH than a 335is?

The 335IS design is reinforced to last longer, still OEM spec NVH

mlifxs · 10-01-2014, 01:08 PM

Quote:

Originally Posted by Chrisar82

But let me get something straight here. How would a 328i w/335is motor mounts or 335i w/335is motor mounts have any more NVH than a 335is?

great question. I guess I'd agree with Casca in practice though. Too much labor to risk it not turning out right.

Ferg · 10-01-2014, 03:39 PM

Quote:

Originally Posted by bvanderhaar

Ferg - did you ever find a DIY for this? I'm concerned mine may be bad but am looking for any information before I jack the car up.

Unfortunately I have not replaced the driver's side mount yet. I've just been kind of dealing with the noise although it is still annoying.

chris82 · 10-01-2014, 04:18 PM

Quote:

Originally Posted by andrey_gta

The 335IS design is reinforced to last longer, still OEM spec NVH

The motor mounts are designed to last longer?

thomas88162 · 10-01-2014, 05:28 PM

Apparently the original mounts in the x35i were prone to failure. This is subjectively what caused the belt contacting the sub frame issue in those cars. I don't think that putting those mounts in would even noticeably increase NVH, especially from something as silky-smooth as the N52! BUT there was never anything wrong with the original motor mounts for the N52, so I don't see the significance of using alternative ones.

secretsquirrel · 12-15-2014, 07:08 AM

Quote:

Originally Posted by thomas88162

Apparently the original mounts in the x35i were prone to failure. This is subjectively what caused the belt contacting the sub frame issue in those cars. I don't think that putting those mounts in would even noticeably increase NVH, especially from something as silky-smooth as the N52! BUT there was never anything wrong with the original motor mounts for the N52, so I don't see the significance of using alternative ones.

Did we ever really determine if the mounts will help keep the power steering pulley from hitting the subframe? I'd like to get this done if possible, but I don't want to pay the labor costs (and get the false confidence) if its only a hunch.

02-05-2014, 05:58 PM	#1
Ferg Master of my own domain!! 158 Rep 1,049 Posts Drives: F82 M4/F15 X5 Join Date: Dec 2006 Location: Huntsville, AL iTrader: (0)	Replacing Motor Mounts Anyone replaced the motor mounts on the N52 XI version? I got the passenger side off very easy; however, I don't see how to take the driver's side out without removing the front axle (no room to remove the mount). Ideas?
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02-24-2014, 07:40 PM	#2
cuco First Lieutenant 44 Rep 318 Posts Drives: 85 BMW R80 Join Date: May 2012 Location: Cincinnati OH iTrader: (1)	Do you have any shop manuals to use as reference? If not them get some, bentley, haynes etc. __________________ Airhead//Caffeine//Junky//Beemer//Fan
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02-24-2014, 08:39 PM	#3
andrey_gta Brigadier General 316 Rep 4,040 Posts Drives: 130i coupé ;) Join Date: Nov 2011 Location: Bimmerpost iTrader: (1) Garage List 2008 BMW 128i [10.00]	guys, FYI 335IS has a new part number for the right side mount. N52 uses n54 n55 mounts. People report improvements __________________ 128i Sport 6MT converted to Euro 130i spec, 3.73 diff, tuned by evolve ~220 whp 207 wtq(ft-lb) SAE In-progress: //M front arm, M3 rack, e36M lip Wishlist: Coils, n55 mnts, headers, LSD, e60 finn diff "The 1-series is the last car that BMW engineered before the Germans, as a car-making culture, fell out of love with driving." - R&T 2013 135is
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02-24-2014, 09:12 PM	#4
RemovedUser Guest 0 Rep n/a Posts Drives:	http://www.e90post.com/forums/showthread.php?p=14627536
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10-01-2014, 05:28 PM	#15
thomas88162 Lieutenant 19 Rep 595 Posts Drives: E92 328i Join Date: Jun 2013 Location: Clinton, IN iTrader: (0)	Apparently the original mounts in the x35i were prone to failure. This is subjectively what caused the belt contacting the sub frame issue in those cars. I don't think that putting those mounts in would even noticeably increase NVH, especially from something as silky-smooth as the N52! BUT there was never anything wrong with the original motor mounts for the N52, so I don't see the significance of using alternative ones.
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