torque arm - tunnel vs cross member
#1
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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?
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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.
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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.
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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.
#12
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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....
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....
#13
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
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
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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.
#16
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
#18
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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.
Good idea for a few new products for you.
Also maybe someone could copy the poly torque arm bushing in rubber.