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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 06-17-2011, 04:29 PM   #41
handpainted
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http://www.turnermotorsport.com/p-34...n=11812224413N
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Old 06-17-2011, 04:44 PM   #42
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Those are the Group N Motorsport mounts, not the stock M3 mounts that BMW uses in their street cars. I run similar solid rubber mounts from BimmerWorld.

See my comments on these mounts earlier in this very thread:
http://forum.e46fanatics.com/showpos...9&postcount=17
http://forum.e46fanatics.com/showpos...1&postcount=19
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Old 06-17-2011, 04:50 PM   #43
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What is actually a real benefit in using M3, or especially solid rubber mounts on a street car that never races? As I understood they will introduce extra vibration (vs stock mounts) - what is the point?
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Old 06-17-2011, 05:08 PM   #44
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What is actually a real benefit in using M3, or especially solid rubber mounts on a street car that never races? As I understood they will introduce extra vibration (vs stock mounts) - what is the point?
The stock M3 mounts are also used on 325/330 xi models. They are slightly stiffer but not enough to create objectionable levels of vibration and some people may not even notice a difference. I think most people with otherwise stock cars hope the M3 mounts might last a little longer than the non-M mounts. There are also a lot of folks here who do track their cars and the added stiffness helps keep the motor fixed in place which has a number of benefits.

You are correct that the solid rubber motorsport mounts will add a very noticeable level of vibration. I run them because my car is supercharged and makes considerable more torque than a stock M3, plus, I actually like to be able to tell that my engine is running. Unlike urethane motor mounts which can add excessive levels of NVH, the solid rubber motorsport mounts are still quite civilized. There's just enough vibration transmitted to give the car a little character and the shifter is held rock solid in place under hard acceleration and corning.

For those most interested in a vibration free mount, stick with stock. For those wanting a slight performance upgrade with little compromise in comfort, go with the M3 mounts. For those wanting a substantial performance upgrade with a mild compromise in comfort, go with the solid rubber motorsport mounts. For those wanting the ultimate in performance for track use where NVH is not a concern, get the Vorshlag urethane mounts (or better yet, go with their Nylon mounts).
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Old 06-20-2011, 09:52 AM   #45
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I've been running stock mounts since day 1. I never have a problem. If you are running something with lots of power, then I could see moving to something else.

One reason I run stock mounts is that when we wreck the car, the mount breaks and not the corner of the block. The mounts are cheaper to replace, than to have the block repaired.
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Old 11-16-2012, 06:00 PM   #46
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^ and very good place too.
A complete list of models that use the same "M mounts":
Part 11812283798 (Rubber Mounting) was found on the following vehicles:

E36: Details on E36
E36 M3 Convertible
E36 M3 Sedan
E36 M3 Coupe

E46: Details on E46
E46 325xi Sedan
E46 325xi Touring
E46 330xi Sedan
E46 M3 Convertible
E46 M3 Coupe

E85: Details on E85
E85 Z4 M3.2 Roadster

E86: Details on E86
E86 Z4 M3.2 Coupe

E90: Details on E90
E90 M3 Sedan

E90N: Details on E90N
E90N M3 Sedan

E92: Details on E92
E92 M3 Coupe

E92N: Details on E92N
E92N M3 Coupe

E93: Details on E93
E93 M3 Convertible

E93N: Details on E93N
E93N M3 Convertible

Z3: Details on Z3
Z3 Z3 2.5 Roadster
Z3 Z3 2.5i Roadster
Z3 Z3 2.8 Coupe
Z3 Z3 2.8 Roadster
Z3 Z3 3.0i Coupe
Z3 Z3 3.0i Roadster
Z3 Z3 M Roadster
Z3 Z3 M Coupe

Aww, M3 mounts wouldn't work out for '00 323i?? I've been feeling this thump when I be shifting gears smoothly. I did wonder if it was the transmission mounts or motor mounts. I kinda want to replaced them anyways since the car is close to 160xxx
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Old 11-17-2012, 01:20 AM   #47
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M3 engine mounts will fit any e46.

With mine, I went with AKG 75D mounts. Engine and Trans. Lots of vibration and some random frequency matches that make a loud farting noise around 3500rpm. But when you're cruising at 74mph, no noise and is very comfortable.
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Old 11-17-2012, 12:24 PM   #48
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just to add this important fact:

E36 non M engine mount 11811140985 has a crown cup to prevent engine going forward and digging into the radiator in case of mount failure.

E36 M3 engine mount does not seem to have this safety feature
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Old 11-19-2012, 05:00 PM   #49
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Wanted to add my experience. I installed OEM M3 engine and transmission mounts. If the increase in response is 10%, the increase in NVH is 30%. The increased NVH is mainly noticeable below 2,000 RPM. My particular case vibrates the car at a very very narrow RPM window (roughly 900 to 1000 rpm) anything below or above and the vibration stops. It's a pretty rough vibration too.

I'm still okay with my decision but I think if I had to do it over again I'd probably pick stock replacements.
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Old 11-19-2012, 06:15 PM   #50
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I can confirm a vibration at 1000 rpm but it's only very noticeable if you hold it there. I changed the engine and transmission mounts to M3 mounts. The thing I like best about the change is improved shifter feel.
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Old 11-20-2012, 03:38 PM   #52
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im ordering bimmerworld engine mounts on black Friday cant wait to get them on
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Old 02-23-2013, 08:26 PM   #53
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Sorry for bringing this thread back to life, but just in a quick second, which mount is the best for reducing vibration? I'm getting pretty tired of the car vibrating at low RPMs. thanks guise.
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Old 02-23-2013, 08:56 PM   #54
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I can confirm a vibration at 1000 rpm but it's only very noticeable if you hold it there. I changed the engine and transmission mounts to M3 mounts. The thing I like best about the change is improved shifter feel.
Quote:
Originally Posted by E46Mango View Post
Wanted to add my experience. I installed OEM M3 engine and transmission mounts. If the increase in response is 10%, the increase in NVH is 30%. The increased NVH is mainly noticeable below 2,000 RPM. My particular case vibrates the car at a very very narrow RPM window (roughly 900 to 1000 rpm) anything below or above and the vibration stops. It's a pretty rough vibration too.

I'm still okay with my decision but I think if I had to do it over again I'd probably pick stock replacements.

This surprises me since the M3 idles right at 900-1000. And the M54 Z3s come w/ M3 mounts stock, and I've never heard of rough vibrations at 1000rpm on those.
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Old 02-23-2013, 08:57 PM   #55
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Sorry for bringing this thread back to life, but just in a quick second, which mount is the best for reducing vibration? I'm getting pretty tired of the car vibrating at low RPMs. thanks guise.
Do you have stock mounts? Best for vibration reduction is new stock mounts.
You might want to look at why your car is vibrating... that shouldn't happen. Unless it's worn stock mounts.
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Old 02-23-2013, 08:59 PM   #56
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This surprises me since the M3 idles right at 900-1000. And the M54 Z3s come w/ M3 mounts stock, and I've never heard of rough vibrations at 1000rpm on those.
It's not bad, just more than stock. M3 S54 is pretty different from the M54, plus M3 drivers would be used to a more raw car.
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Old 02-23-2013, 09:35 PM   #57
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Do you have stock mounts? Best for vibration reduction is new stock mounts.
You might want to look at why your car is vibrating... that shouldn't happen. Unless it's worn stock mounts.
I'm 99% sure it's my motor mounts, as I can visually see the motor shaking/vibrating when it's at low RPMs. I just want the vibration gone, and a few of the talks on urethane, M3 mounts, and aftermarkets have me a bit confused. :-\
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Old 02-23-2013, 09:49 PM   #58
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I'm 99% sure it's my motor mounts, as I can visually see the motor shaking/vibrating when it's at low RPMs. I just want the vibration gone, and a few of the talks on urethane, M3 mounts, and aftermarkets have me a bit confused. :-\
Yea, so just get stock mounts if NVH is you main concern.
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Old 02-24-2013, 11:02 AM   #59
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Yea, so just get stock mounts if NVH is you main concern.
Thanks
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