Gears & Axles - do adj. torque arms really ruin rears???

i've read that on this sit a few times...i also heard from one guy that the president of moser eng. said so. but i'd like to hear some first hand tid bits from some people with experience.

If they are adjusted incorrectly, you can have excessive driveline vibration that will take its toll on seals and such...it'd have to be really, really out of whack before it caused any serious damage though. I'd dismiss the claims you have heard until someone posts up some good, hard evidence. If anything ever went wrong with an adjustable torque arm, I'd be 99.9% certain that it was the end-users fault (installation error, etc).

I think what you read was that torque arms distort the 12 bolt case since they are
mounted directly to it same with dana60.That was the swill that the rear end mfgs were spewing to avoid warranty disputues.

I have never heard of an adjustable TA itself destroying a rear.
If it was WAY out of adjustment perhaps but the vibration would be so bad you would not drive it far.
Traction is hard on rear ends and the warranty work can suck up your profits so saying something else broke your product and not bad setup or shoddy workmanship gets you out of fixing it.

I have busted 2 10 bolt rear ends, both had a BMR adjustable TA on them.
But trust me the TA had nothing to do with the failures.
Traction did them in.

Stock torque arms can ruin rears as well, especially if they look like this one...

http://www.exoticperformanceplus.com//images/servicesImages/torque%20arm%202.jpg

http://www.exoticperformanceplus.com//images/servicesImages/torque%20arm%203.jpg

http://www.exoticperformanceplus.com//images/servicesImages/torque%20arm%201.jpg

Bob

My torque arm I put on looks almost straight, but slightly is upwards looks like 1 or 2 degrees with eyeballing it. so that should be fine, right. as the torque arm gets skinny up front that is the direction it is angled higher. does that make sense?

pinion angle should be -2 or -4 depending typically. That would be the pinion pointing towards the ground not up.

can planting the rear tires hard and really grabbing ruin a rear end? sure, that's what the torque arm is for though.

i could see tearing up u-joints in a hurry if the pinion angle is set like -8 or so, that's about it though.

pinion angle should be -2 or -4 depending typically. That would be the pinion pointing towards the ground not up.


Okay look at the pics, my car is the opposite of that. the torque arm is pointing up, not down, in my car.

pinion angle:
http://www.wolferacecraft.com/pinionangle.aspx

Okay look at the pics, my car is the opposite of that. the torque arm is pointing up, not down, in my car.

i don't see any pics of your car.... :judge: :judge:

Moser will tell you an adjustable T/A will kill a rear.

Bottom line is that it's not the fact that you have an adjustable torque arm that messes anything up. It's when you don't have it set right that it causes problems. Having correct pinion angle won't mess anything up.