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      02-28-2013, 06:37 PM   #1
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HP Autowerks || Upgraded Transmission Mounts

What is a transmission mount?

The transmission mounts in a BMW are a common part that is frequently overlooked. They are required to do many things in the vehicle, yet are not quite suitable for those who actually drive their BMWs.

The transmission mount is designed to do the following:

Help stabilize the transmission under vehicle load allowing the shifter to engage into gear properly
Isolate vibration from the drivetrain to the chassis
Under engine load, the transmission can wiggle left and right slightly. This wiggle gets worse when the car is being driven in turns. This unwanted movement may potentially causing the driver to miss shift, a costly error which will always be considered driver error.

Solutions to a Potential Problem

With this unwanted movement, what are your choices as a consumer? There are some BMW factory mounts that can improve this situation. However, they don't fit all cars and only offer minimal benefits. There are race-type mounts which can stabilize the transmission so much, you can feel every last vibration. There are even other aftermarket mounts designed with reinforcements to make mounts even more stiff. You could probably even find someplace that offers solid aluminum mounts, for the diehards.

When we sought to have our own transmission mounts produced, we wanted them to be compliant for street use. We wanted to ensure that there were no compromises in performance, no extras to buy, just a mount engineered to do what we want without needless add-ons.

What we have is a transmission mount made from Neoprene rubber, with a completely different shape than the factory mount. The hourglass shape of the factory mount is not the best for stabilizing the transmission. By changing the shape to the cylindrical shape of the Rogue Engineering mount, it reduces deflection significantly.

We have designed this mounts to minimize unwanted transmission movement while maintaining vibration dampening characteristics. No additional adapters, mounts, cups, or braces are required for our mounts. To eliminate even MORE movement from the transmission, you must go to the root of the issue, the factory motor mounts. Unfortunately, BMW Motorsport motor mounts (if available), can cost over $500 or more.

Common Myths

There are companies out there pushing their solutions to unwanted transmission movement which are no suitable to street driven cars. Sure, solid aluminum or Delrin mounts product a nice, solid feel, but at the expense of tremendous NVH. In a racecar, this kind of noise and vibration is commonplace. However, in a street car, this is not acceptable.

Using external "cups" or bushings with "bolt-through" designs are excuses for poor design, over zealous claims, or just a way of promoting a gimmick. Being realistic about the amount of play at the transmission that can be minimized is important. Thinking these small bushings can eliminate it all together is unrealistic.
A Simple, Affordable, Complete Package

The Rogue Engineering Transmission Mounts are sold as a pair, and come with Grade 8 Zinc plated hardware. Unlike other aftermarket mounts, the mounting plate and studs of our mounts have been Cadmium plated to prevent corrosion.

Currently, the transmission mounts fit the following vehicles:

All E34
All E36 including M3
All E46 including E46 M3
All Z3s include M Roadster/M Coupe
All Z8s
All E39 including M5s
All Z4s
All E8x including 1M
All E9X

Application Note: Transmission mounts are NOT required or necessary for vehicles equipped with automatic or SMG transmissions.

$55

Order here:

http://www.hpashop.com/Rogue-Enginee...s-e9x-nonM.htm
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Last edited by HP Autosport; 02-28-2013 at 06:58 PM.
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      02-28-2013, 07:00 PM   #2
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Hey Harold,

Sorry to ask this, but by "Application Note: Transmission mounts are NOT required or necessary for vehicles equipped with automatic or SMG transmissions." Do you mean that the automatic transmission doesn't get any benefit from this?

Thanks.
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      03-01-2013, 09:43 AM   #3
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Harold,
Any sort of DIY or instruction on installing these? Anyone know how hard these are to get to and replace? Seems like what I sam looking for and good price.
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      03-01-2013, 11:47 AM   #4
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Quote:
Originally Posted by RupertPupkin View Post
Harold,
Any sort of DIY or instruction on installing these? Anyone know how hard these are to get to and replace? Seems like what I sam looking for and good price.
Here is an excellent DIY by "robc1976".

http://www.e90post.com/forums/showthread.php?t=804839
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      03-01-2013, 04:12 PM   #5
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Thanks! I was too lazy to search haha




Quote:
Originally Posted by HP Autowerks View Post
Here is an excellent DIY by "robc1976".

http://www.e90post.com/forums/showthread.php?t=804839
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      03-01-2013, 07:07 PM   #6
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Would these help with the planted car feel? I had done engine mounts on my previous car(S2k) and made a huge difference in the car itself.

Possible to get a Engine and Transmission mount, To get the feeling the engine is actually bolted on the chassis? But not to much Vibration/Rumble BTW I have a e92 with paddle shifters..so not manual

Please suggest,
Cheers!
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      03-01-2013, 07:40 PM   #7
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Quote:
Originally Posted by Viick View Post
Would these help with the planted car feel? I had done engine mounts on my previous car(S2k) and made a huge difference in the car itself.

Possible to get a Engine and Transmission mount, To get the feeling the engine is actually bolted on the chassis? But not to much Vibration/Rumble BTW I have a e92 with paddle shifters..so not manual

Please suggest,
Cheers!
These will reduce unwanted transmission movement, but you don't need them for your auto.
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      07-12-2013, 01:22 PM   #8
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Be careful and weary dealing with this company.

I got screwed and want to alert others. Lots of other vendors have all the same stuff and you dont ever have to deal with customer service like HP provides.
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      09-05-2013, 01:04 AM   #9
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Quote:
Originally Posted by Rival View Post
Be careful and weary dealing with this company.

I got screwed and want to alert others. Lots of other vendors have all the same stuff and you dont ever have to deal with customer service like HP provides.
Just to clarify things. Your package was shipped with "signature required" as with all packages leaving HP. You can choose to have the package shipped without signature in the comment section or by sending us an email.

We can not change the delivery confirmation method once shipped. I don't believe you were "screwed" in anyway as you were either refunded or the item re-shipped without signature required if you made the proper request.
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      11-07-2013, 10:50 PM   #10
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In stock!
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      02-02-2014, 02:41 PM   #11
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Quote:
Originally Posted by HP Autosport View Post
In stock!
Why do they consider a solid threaded rod going through the bushing to be a poor design? At first glance, I would consider that a better design. It would eliminate the risk, or at least greatly reduce the risk, of the washer and bolt ripping loose like what happened to those UUC red mounts.
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      06-02-2014, 06:09 PM   #12
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in stock!
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