Suspension & Brakes Springs | Shocks | Handling | Rotors

torque arm - tunnel vs cross member

Thread Tools
 
Search this Thread
 
Old 03-05-2010, 02:54 PM
  #1  
Staging Lane
Thread Starter
iTrader: (1)
 
Ryda85's Avatar
 
Join Date: Jun 2004
Posts: 90
Likes: 0
Received 0 Likes on 0 Posts

Default torque arm - tunnel vs cross member

an a4 car with double diamond subframe connectors. is it better to have a longer TA with a new cross member? or a tunnel mounted one that ties in to the subframe sonnectors?
Old 03-05-2010, 03:07 PM
  #2  
TECH Addict
iTrader: (7)
 
SS DNA's Avatar
 
Join Date: Apr 2004
Location: NorcaL
Posts: 2,187
Likes: 0
Received 0 Likes on 0 Posts
Default

What are you using your car for ? Drag Race? AutoX? or Street ?

You have to think about that first because one application is better suited for drag.
Old 03-05-2010, 03:10 PM
  #3  
Staging Lane
Thread Starter
iTrader: (1)
 
Ryda85's Avatar
 
Join Date: Jun 2004
Posts: 90
Likes: 0
Received 0 Likes on 0 Posts

Default

car is not a daily driver, mainly a street car / mess around car that will see the strip lets say once a month
Old 03-05-2010, 03:11 PM
  #4  
Staging Lane
Thread Starter
iTrader: (1)
 
Ryda85's Avatar
 
Join Date: Jun 2004
Posts: 90
Likes: 0
Received 0 Likes on 0 Posts

Default

also, if i get the bmr relocation cross member, it has adjustable holes...would this emliminate the need for an adjustable torque arm?
Old 03-05-2010, 03:21 PM
  #5  
Customizing Director
iTrader: (12)
 
MadIceV8's Avatar
 
Join Date: Mar 2002
Location: SW Chicago, IL
Posts: 5,778
Likes: 0
Received 4 Likes on 2 Posts

Default

I would only go with tunnel mounted if the car was mostly for drag. Otherwise go with the longer torque arm.
Old 03-05-2010, 03:27 PM
  #6  
Kleeborp the Moderator™
iTrader: (11)
 
MeentSS02's Avatar
 
Join Date: Mar 2004
Location: Dayton, OH
Posts: 10,316
Likes: 0
Received 3 Likes on 3 Posts

Default

Originally Posted by MadIceV8
I would only go with tunnel mounted if the car was mostly for drag. Otherwise go with the longer torque arm.
Agreed - if the vast majority of your time will be spent on the street, get the stock-length design.
Old 03-05-2010, 04:07 PM
  #7  
TECH Fanatic
iTrader: (27)
 
cals400ex's Avatar
 
Join Date: Apr 2007
Location: Collinsville, IL
Posts: 1,277
Likes: 0
Received 2 Likes on 2 Posts

Default

i would agree as well. my tunnel mounted torque arm makes a fair share more noise than stock. i wouldn't get it again with the amount street driving i do.
Old 03-05-2010, 08:04 PM
  #8  
TECH Enthusiast
iTrader: (5)
 
kierstyn's Avatar
 
Join Date: Sep 2007
Location: TN
Posts: 679
Likes: 0
Received 1 Like on 1 Post
Default

For a a4 i like the longer tq arm with the relocation kit.
Old 03-05-2010, 08:44 PM
  #9  
TECH Enthusiast
iTrader: (4)
 
98TAjwh's Avatar
 
Join Date: Jul 2008
Location: San Diego
Posts: 625
Likes: 0
Received 0 Likes on 0 Posts

Default

i just put my adjustable TA and drive shaft loop on today. i don't dd my car but the amount of noise it makes wouldn't keep me from dd'ing it. but then again, when i put my long tubes on i couldn't get the stock cross member on and just drove without it. the ypipe would knock on the floor board but the DSL fixed that problem. i even replaced my motor mounts with polies and was pissed cuz it still knocked. i was like "i thought the damn poly motor mounts were supposed to fix this!?" but it was just cuz i was missing the cross member.
Old 03-05-2010, 10:34 PM
  #10  
TECH Addict
iTrader: (7)
 
SS DNA's Avatar
 
Join Date: Apr 2004
Location: NorcaL
Posts: 2,187
Likes: 0
Received 0 Likes on 0 Posts
Default

Like everyone is saying, If its mostly a street car, then go with a full lenght. If you do race on the street alot, you might want to get the crossmember relocation piece which will take the mounting off the tranny tail and will help prevent case cracking and tranny failures.
Old 03-06-2010, 10:31 AM
  #11  
12 Second Club
 
dlk1950's Avatar
 
Join Date: Sep 2007
Location: Portage Pa.
Posts: 593
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by SS DNA
Like everyone is saying, If its mostly a street car, then go with a full lenght. If you do race on the street alot, you might want to get the crossmember relocation piece which will take the mounting off the tranny tail and will help prevent case cracking and tranny failures.
If its not mostley a strip car this is the way to go..Check out UMI
Old 03-06-2010, 08:27 PM
  #12  
Moderator
iTrader: (11)
 
jimmyblue's Avatar
 
Join Date: Mar 2002
Location: East Central Florida
Posts: 12,604
Likes: 0
Received 6 Likes on 6 Posts

Default

The only people I've seen reporting cracked tailhousings
have stock (2.73) steel driveshafts and have gone up in
gear ratio.

I found a relocating crossmember unbearably noisy /
vibey, took it off and gave it away.

I have come up with what I think is a neat idea for
a simple add-on relocation piece that would use the
stock setup, keeping the vibe isolation but relieving
the tailhousing stress, but haven't gotten anyone
interested in fabbing it. Since I'm not going into the
welding-****-up-full-time business, I may as well set
it free....
Attached Thumbnails torque arm - tunnel vs cross member-ta_mount_20091118jws.png  
Old 03-08-2010, 07:10 AM
  #13  
FormerVendor
iTrader: (1)
 
UMI Sales's Avatar
 
Join Date: Jan 2009
Posts: 2,463
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by dlk1950
If its not mostley a strip car this is the way to go..Check out UMI
Hello
Thanks for suggesting UMI Performance! We always suggest if the vehicle is going to be more of a street car to go with a full length adjustable arm and a relocation cross member to get the arm off the rear of the transmission to eliminate any issue with possibly breaking the mounting bracket on the tail shaft. But if the car is either more of a track vehicle or seeing some serious HP I would suggest going with a tunnel mounted version. Now these arms clunk every now and then due to the cross member being mounted right under your seat due to the weight transferring. Below is a link to show you what all UMI Performance has to offer!

http://www.umiperformance.com/catalo...kbudlrrt2pk7a1

http://www.umiperformance.com/catalo...kbudlrrt2pk7a1

If you have any other questions feel free to ask!
Thanks
Brad
Old 03-08-2010, 07:33 AM
  #14  
11 Second Club
iTrader: (88)
 
the_merv's Avatar
 
Join Date: Mar 2006
Location: The Beach...
Posts: 19,769
Received 305 Likes on 231 Posts
LS1Tech 10 Year
Default

I relocated if off of the Tranny..makes it alot more comfortable and less annoying when driving a M6.
I used to have the Tunnel Brace mounted one, it was a pain in the ***.

Now I have the full length Adjustable Torque Arm with Relocation Cross Member..

Old 03-09-2010, 08:56 PM
  #15  
TECH Enthusiast
iTrader: (6)
 
Ryanmgaspard's Avatar
 
Join Date: Nov 2006
Location: Pineville, LA
Posts: 605
Likes: 0
Received 0 Likes on 0 Posts
Default

Are there rubber bushings that go between the crossmember relocation mount and the bottom of the floor pan? I can picture the poly mount on the ta arm mounted crossmember which mounts to the body producing the same amount of vibraton as the poly trans mount.
Old 03-10-2010, 07:06 AM
  #16  
FormerVendor
iTrader: (1)
 
UMI Sales's Avatar
 
Join Date: Jan 2009
Posts: 2,463
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by Ryanmgaspard
Are there rubber bushings that go between the crossmember relocation mount and the bottom of the floor pan? I can picture the poly mount on the ta arm mounted crossmember which mounts to the body producing the same amount of vibraton as the poly trans mount.
Hello
No there is no rubber bushings that go between the cross member and the body. You wont even notice any vibration from the torque arm poly mount. The torque arm just will slide back in forth in the bushing. And if you don't want vibration stay away from the poly trans mount and go with a replacement OEM. If vibration is really a problem/worry you could cut out some rubber shims and place them between the cross member. But if you have any other questions feel free to ask.
Take it easy,
Brad
Old 03-10-2010, 08:14 AM
  #17  
11 Second Club
iTrader: (88)
 
the_merv's Avatar
 
Join Date: Mar 2006
Location: The Beach...
Posts: 19,769
Received 305 Likes on 231 Posts
LS1Tech 10 Year
Default

I feel very little vibration from the one that I have pictured..then again I don't hear much over the Engine..
Old 03-12-2010, 09:12 AM
  #18  
TECH Veteran
iTrader: (3)
 
MY99TAWS6's Avatar
 
Join Date: Apr 2002
Location: Kelowna,BC
Posts: 4,719
Likes: 0
Received 3 Likes on 3 Posts

Default

Hey Umi..could you make that torque arm mounting setup that was shown in the above diagram?? Seems that might work fine and give more options. I am currently running bmr with crossmember relocation and still think it puts extra vibes thru the car.I was also thinking to put some rubber isolators under the crossmember and where have some shims under the tranny mount location as well. Maybe you guys could sell some for that purpose also?
Good idea for a few new products for you.
Also maybe someone could copy the poly torque arm bushing in rubber.
Old 03-13-2010, 12:58 PM
  #19  
TECH Regular
iTrader: (9)
 
getusumws6's Avatar
 
Join Date: Jan 2006
Location: olathe,ks
Posts: 445
Likes: 0
Received 0 Likes on 0 Posts

Default

I find the only draw back with a "short" style tunnel mount is that you cant buy a X pipe exhaust set up for it.
Old 03-13-2010, 02:47 PM
  #20  
11 Second Club
iTrader: (88)
 
the_merv's Avatar
 
Join Date: Mar 2006
Location: The Beach...
Posts: 19,769
Received 305 Likes on 231 Posts
LS1Tech 10 Year
Default

Originally Posted by getusumws6
I find the only draw back with a "short" style tunnel mount is that you cant buy a X pipe exhaust set up for it.
Exactly why I like the one I have..



Quick Reply: torque arm - tunnel vs cross member



All times are GMT -5. The time now is 10:40 AM.