rattle after torque arm install
Thread Starter
12 Second Club
Joined: Feb 2006
Posts: 993
Likes: 3
From: Waukesha,WI
rattle after torque arm install So technically i have two questions one being if i set the pinion angle correctly. I measured the angle at the back of the drive shaft then the angle at the bottom of the torque arm on the diff. If i read the directions correctly to get true pinion angle i take the diff side and subtract the driveshaft side and get my number. ideally for my street setup of -1* I have +1* at the shaft and -2* at the pinion so that is -1* true pinion? just wanted to make sure ive got this right. Next i drove the car home after install and had a nasty rattle once and a while at idle at a stop sign and under certain loads on accel. So i took it back to work and looked under it seeing it had put a big dent in the tunnel where it had obviously been hitting. So i dented it some more figuring i could get the rattle to go away. Took it out again couple nights ago and seemed it was better but still there then we stopped at a gas station and it got real loud! Am i getting the rattle thru the arm to tunnel most likely or am i chasing an exhaust rattle i didn't have before i installed the arm. I didn't touch the exhaust at all and i'm stumped i need to get the car back to work to double check that the arm clears the tunnel yet but does this sound normal? Seeing the car is lowered?
Thread Starter
12 Second Club
Joined: Feb 2006
Posts: 993
Likes: 3
From: Waukesha,WI
trans mounted torque arm and the sound is more solid not tin like. Sounds like its right behind the seat where i found it hitting before. But like i said i haven't gotten it back to work yet on the rack to see if it still is hitting but its a pretty solid sound
Teching In
Joined: Mar 2014
Posts: 31
Likes: 0
From: Washington State
I have a BMR adjustable torque arm, UMI panhard bar, boxed lower control arms, subframe connectors, BMR trans crosmember and a girdle.
Are you still on the stock rear? I have had issues with the torque arm contacting the body, but I have an S60. I have that same vibration as I haven't made enough clearance underneath yet. Tracking vibrations on these cars is definitely a real pain though.
Take the drive shaft out of the equation when setting the pinion angle.
Check you angles at the trans and rear-end .
http://images.rodandcustommagazine.c...haft_tech+.jpg
I'd also check the front TA bushing and it's mount.
Check you angles at the trans and rear-end .
http://images.rodandcustommagazine.c...haft_tech+.jpg
I'd also check the front TA bushing and it's mount.
