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07-27-2011, 07:23 PM #1
- Join Date
- Oct 2008
- Location
- New Brunswick Canada
- Age
- 54
- Posts
- 881
Black- BLK TA modded 12.2@113mph
80MPH vibration anyone find a fix
It's my second TA a 99 and a 2000 and it seems like both of them had the same vibration at 80mph or so lets say 75 to 95mph Is there a fixe for the vibration or do we just live with it I have the sfc , lca, relocation brackets ,phb Yank SS3200 and Motive gears done and I really would like that shake to go away It's not terrible but just enough to be anoying
Thanks
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07-27-2011, 07:54 PM #2
- Join Date
- May 2011
- Location
- minden la.
- Posts
- 20
black- 02 z28
try having your tires balanced and rotated?
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07-27-2011, 11:03 PM #3
- Join Date
- Oct 2008
- Location
- New Brunswick Canada
- Age
- 54
- Posts
- 881
Black- BLK TA modded 12.2@113mph
Not the tires I just changed them with new rims same thing and it was on 2 cars as well
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07-28-2011, 03:34 AM #4
- Join Date
- Jan 2010
- Location
- East of Cleveland, Ohio
- Posts
- 3,827
Black- 99 WS.6 - Modified
No vibration here. With a vibration occuring only at a certain speed, it'll be a bit harder to pinpoint. I would double check all suspension parts and drivetrain parts for tightness. Do you have solid or poly mounts by any chance? I have heard that they will transfer quite a bit more vibration. Also, a tunnel mount torque arm can too.
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07-28-2011, 04:45 AM #5
- Join Date
- Nov 1999
- Location
- over here...
- Age
- 45
- Posts
- 25,709
[]D [] []V[] []D- 1999 trans am
are the LCA relo brackets welded in??? i'd check the bump stops behind the rear wheels to make sure they aren't dry rotted... i'd also check ALL the bushings in the entire rear... with the LCA relo brackets it's possible the drive shaft isn't a nice straight line going in to the rear... the rear could be facing the ground slightly and causing the vibration...
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07-28-2011, 08:10 AM #6
- Join Date
- Oct 2008
- Location
- New Brunswick Canada
- Age
- 54
- Posts
- 881
Black- BLK TA modded 12.2@113mph
Thanks guys I will check and get my tires re balanced just in case Any lead on how to check pinion angle and such!! Brand new tranny ,driveshaft and new gears with install kit in the rear!!!
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07-28-2011, 08:12 AM #7
- Join Date
- Oct 2008
- Location
- New Brunswick Canada
- Age
- 54
- Posts
- 881
Black- BLK TA modded 12.2@113mph
The bumb stops are no longer there the 295/35/18 were rubbing on them You mean the ones on the upper part of the sub frame That's gone I need to buy the custom ones that would fit on there for wider tires. No poly mounts stock mounts and the relocation brackets are UMI bolt on....I just ordered a relocation torque arm bracket shit if it increases vibration I will cancel it!!!
Last edited by Durango; 07-28-2011 at 08:16 AM.
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07-28-2011, 08:57 AM #8
- Join Date
- Jan 2010
- Location
- East of Cleveland, Ohio
- Posts
- 3,827
Black- 99 WS.6 - Modified
The relocation bracket for a stock long arm torque arm is ok. It will relocate the torque arm to the crossmember. A tunnel mount torque arm will transfer more noise and vibration. Mine isn't noticeable to me though. Could be brand related.
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07-28-2011, 08:59 AM #9
- Join Date
- Mar 2007
- Location
- NC
- Posts
- 421
NBM- 1998Z28
Only time I ever experinced what your talking about happened after I bought a user 10 bolt rearend. When it was being rebuilt to install a new set of gears we found that one of the axle bearing had gone bad. Had to replace axle because of wear also. How long ago was your reareend built and did they just change the gears or do a full rebuild?
TSP 347 SB, TSP Stage 2.5 PRC LS6, TSP MS4, Performabuilt Stage 2 4L60E, Yank PT4000, 4.11s, Fast 90/90, FTRA Cold air intake+all the free mods, Dynatech Supermaxx Exaust System, DMH Cutouts, Hooker Catback/FTRA Tips. Tuned by RPM/Garner NC. 11.28@119
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07-28-2011, 10:39 AM #10
- Join Date
- Feb 2009
- Location
- Florida Man Status Acheivement
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- 11,785
Navy Blue Metallic- 98 T/A, 00 FBVert, 78T/A
could also be from the bushings in the front, sway bar, rotors warped - At low speeds you would not notice as much until you get to higher speeds or hard breaking.
Do you feel the vibration coming from the wheel or pardon the puns, your butt? From the wheel it is usually from the front and is something involving the steering. Feel it with your butt, then it is more likely with the rear.
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07-28-2011, 04:40 PM #11
- Join Date
- Jan 2009
- Location
- North Jersey
- Posts
- 11,496
Phantom Black Metallic- 2004 GTO M6
Keep us posted.
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07-31-2011, 03:04 PM #12
- Join Date
- Oct 2008
- Location
- New Brunswick Canada
- Age
- 54
- Posts
- 881
Black- BLK TA modded 12.2@113mph
Hum all good questions The gears were changed with all new bearings I bought the kit to get it all done and It feels more like the butt loll It's minor I wonder if the u joint would be bad maybe I have to check everything basic 1st I have been too busy but this week I should be able to check it all Thanls again
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07-31-2011, 03:07 PM #13
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07-31-2011, 03:16 PM #14
- Join Date
- Jan 2009
- Location
- North Jersey
- Posts
- 11,496
Phantom Black Metallic- 2004 GTO M6
Have you ever had the balance checked on the driveshaft?
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07-31-2011, 03:18 PM #15
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07-31-2011, 03:35 PM #16
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07-31-2011, 03:41 PM #17
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07-31-2011, 03:51 PM #18
driveshaft check to see if the holes where the u-joint goes may be ovaled out
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07-31-2011, 06:18 PM #19
- Join Date
- Aug 2005
- Location
- Groveland ,FL.
- Posts
- 25
Silver- 1998-Camaro SS
It could be that your Rotors are warped. That's what happened to me.
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07-31-2011, 11:52 PM #20
- Join Date
- Jul 2011
- Location
- TX
- Posts
- 2
With a vibration occuring only at a certain speed, it'll be a bit harder to pinpoint.
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