Driveline shake - worse after diff mount install
Thread Starter
7th Gear
Joined: Feb 2020
Posts: 7
Likes: 1
Driveline shake - worse after diff mount install
New to me, stock 2001 Z06 with 54000km on it.
I would experience this drive line shake in 2nd gear when fighting for traction / when the car starts hooking up after spinning under WOT. Sometimes badly, sometimes not noticeable.
After some research, it seemed that an aftermarket diff mount would solve this issue by securing the rear diff/trans. I bought and installed an RW engineering mount (wouldn't recommend it by the way, the fit wasn't perfect and the mount sits directly on top of the factory rear brake lines - they had to be rerouted slightly and secured in other means besides the factory plastic holders).
The drive line shake is now worse. I can duplicate the symptom every single time in 1st gear and 2nd gear when fighting for traction. The noise is nasty - like a metallic noise, and sounds like its now coming specifically from under or forward of the shifter area.
Anyone have similar experience? Urethane motor mounts make this situation any better?
I would experience this drive line shake in 2nd gear when fighting for traction / when the car starts hooking up after spinning under WOT. Sometimes badly, sometimes not noticeable.
After some research, it seemed that an aftermarket diff mount would solve this issue by securing the rear diff/trans. I bought and installed an RW engineering mount (wouldn't recommend it by the way, the fit wasn't perfect and the mount sits directly on top of the factory rear brake lines - they had to be rerouted slightly and secured in other means besides the factory plastic holders).
The drive line shake is now worse. I can duplicate the symptom every single time in 1st gear and 2nd gear when fighting for traction. The noise is nasty - like a metallic noise, and sounds like its now coming specifically from under or forward of the shifter area.
Anyone have similar experience? Urethane motor mounts make this situation any better?
Racer
Joined: Jun 2004
Posts: 270
Likes: 67
From: Montana
Did you check the height of new diff mount is taller? Or look at the shifter mount to tunnel frame gap is too close? That might be your metallic noise. Years ago I bought a replacement diff mount and it was slightly taller which I didn’t notice until afterwards. Well this taller mount raised the torque tube closer the tunnel frame. The closest contact point is at the shifter mount on the torque tube. There should about a 1/4” gap, but it was about 1/16” and it bang against the tunnel frame badly.
Last edited by robmiz; May 14, 2020 at 10:42 AM.
Thread Starter
7th Gear
Joined: Feb 2020
Posts: 7
Likes: 1
I looked under the car a few times since the install. Can't see anything out of place. I will pay attention to the shifter mount next time.
I have since installed a new set of Nitto NT05s. The car hooks better but still has this issue. Rolling into the throttle a bit prevents the shaking i'm having.
If it is a torque tube / flex disc problem.. I'll probably wait until it gets much worse before I am dropping the torque tube!
I have since installed a new set of Nitto NT05s. The car hooks better but still has this issue. Rolling into the throttle a bit prevents the shaking i'm having.
If it is a torque tube / flex disc problem.. I'll probably wait until it gets much worse before I am dropping the torque tube!
Drifting
Joined: Dec 2000
Posts: 1,255
Likes: 50
From: Clayton, NC north carolina
