Frustrated and pissed, Help Please....
This is a discussion on Frustrated and pissed, Help Please.... within the General Help forums, part of the LSx Technical Help Section category; Ok so I changed the rear in my car with the dana s-60, BMR lower control arms, BMR adj. torque ...
06-19-2009, 08:52 PM #1
Frustrated and pissed, Help Please....
Ok so I changed the rear in my car with the dana s-60, BMR lower control arms, BMR adj. torque arm, BMR torque arm relocation bracket, 01 Z28 M6 car. Before my exhaust used to hit sometimes under the car x-pipe with bullets. Now my car seems to ride rought but thats not my real problem. I feel like the tranny is hitting under the car or the torque arm ..... something. If i let off the throttle and let it slow down in gear it will hit. If i roll the car and pull the e brake it hits, also on quick bumps when the rear reaches the bump it hits too. It won't hit as hard if a am accelerating through the bumps.
Has anyone else had this problem after installing the BMR parts? I am goint to check again tomorrow but im frustrated with it.
06-19-2009, 09:47 PM #2
I hate to tell someone to search....but, I think I remember seeing a thread in the suspension section awhile back....try resetting you options so you can read back afew months
06-20-2009, 12:10 AM #3
have you checked the tranny mount to make sure it's not broke?
06-20-2009, 12:49 AM #4
It sounds like your geometry is way off, making it ride rough, banging noises etc. If the torque arm is loaded, it will force the tabs on the tranny mount to rub and bang. How did you set it all up? What was the drive angle?
06-20-2009, 04:53 AM #5
I have read about Spohn t/a doing that, not sure about BMR. I have the BMR Chrome Moly Full Length Adjustable Torque Arm and mine is OK.It's stock.
06-20-2009, 01:51 PM #6
06-20-2009, 01:51 PM #7
06-20-2009, 02:29 PM #8
- Join Date
- Jan 2009
- Paterson/Ridgewood, NJ
Phantom Black Metallic
- 2004 GTO M6
Sounds like trial and error to me. May have to drive the car and listen to the noises. Try to find out where they are coming from, and get back underneath the car to make more adjustments until all the noise is completely gone.
06-20-2009, 04:32 PM #9
First, was the car level and the suspension fully loaded when you tightened everything down? If not, loosen the control arms, panhard, etc. and retorque with the suspension loaded. Next - -2 to -3 is the starting point for the drive angle. Check all around underneath, especially around where I mentioned for signs of rubbing or contact, then take 1/2 degree out at a time until the noise is gone. I have the slp torque arm and BMR trailing arms on the stock rear and mine wanted to be two full turns of the adjuster more positive than the starting point and the noise was completely gone.
06-20-2009, 05:45 PM #10
when you set everything was the suspension loaded?
06-20-2009, 06:26 PM #11
So when you say take out 1/2 degree at a time do you mean from the sum of the two angles or just from the drive shaft or rear? Also do I go say it is at -2 towards -1.5? Thanks for the help i appreciate it. I'll go and drop the car and retorque the LCA and Panhard.
06-20-2009, 06:42 PM #12
do you guys think I can break something like the tail of the tranny from that noise hitting. i played with the drive shaft and it has play when I spin it forward and change direction quickly, it will make that noise not as loud but it sounds like it could be the same. Does anyone know about how much play if any when the car is in neutral?
06-21-2009, 12:25 AM #13
ok guys/gals I put the car on drive on ramps and broke everything loose, and I loaded and unloaded the suspension by pushing up on the car a few times. I loosened the torque arm as well, then I set the angle to -3 on the torque arm and +1 on the drive shaft. The banging under the tranny is gone but now it seems like there is not enough preload on the torque arm. I just barely set it to where it started to load up. It rides smoother and the hitting noise is pretty well gone but i think i still need to fine tune it.
I wanted to thank you guys that posted up ideas from your knowledge, I learn something new each day from you guys.
Thanks a bunch.
06-21-2009, 04:19 AM #14
Don't worry about preload on the torque arm. The main idea is to have a slight negative bias on the pinion so when you release the clutch, the drive shaft and pinion are nicely aligned and your lower control arms can control axle torque.
Glad we are making progress!
06-23-2009, 05:04 PM #15
06-24-2009, 03:46 PM #16
Hope that helps or did I misunderstand your question?
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
By CWW17 in forum Firebird / WS6Replies: 20Last Post: 09-02-2008, 09:38 PM
By Mr. Luos in forum Almost Anything GoesReplies: 41Last Post: 04-08-2007, 03:19 PM
By ninobrn99 in forum Almost Anything GoesReplies: 25Last Post: 03-15-2006, 07:19 PM