frankenpixel New Member 6 Member For: 6y 2m 28d Posted 14/10/18 04:33 AM Share Posted 14/10/18 04:33 AM Hi all first post, Just bought a 08 FG falcon xr6t 6spd Manual between 90-110+kmh/h there is a very noticeable vibration coming from the rear end of the car, the vibration doesn't matter if accelerating/decelerating or sitting at a stable speed. I checked balance of wheels at tyre shop and even rotated wheels from back to front to eliminate the wheels being any part of the issue Tailshaft and tailshaft centre bearing look completely new Diff bushes are aftermarket polyurethane bushes and look fine (I wouldnt guess the extra firmness to be a contributing factor as I have had solid metal diff bushes in a previous car and made no vibrations what so ever.) wheel bearings feel nice and tight and driveshafts feel good The only thing I can think of is if a driveshaft has been bent or dinted ever so slightly or if the brand new tail shaft has not been balanced properly, is there anyone else who has had this problem and able to help? Cheers Link to comment Share on other sites More sharing options...
bossmang FREAKY Donating Members 12,433 Member For: 15y 16d Gender: Male Location: Melbourne Posted 14/10/18 04:38 AM Share Posted 14/10/18 04:38 AM get the tail shaft balanced 2 Link to comment Share on other sites More sharing options...
4321 Bronze Donating Members 257 Member For: 10y 9m 15d Posted 14/10/18 10:52 AM Share Posted 14/10/18 10:52 AM The factory bush's are soft (rubbish) so they don't transfer noise from the diff (which is also rubbish). Take it to a gearbox place to check & expect to get a rebuild. You can put standard bush's in & change them regularly (or put FPV ones which are a bit harder). Either that or turn the radio up, remember they are a glorified taxi & while it will last don't expect it to be perfect. Like most things in life if you throw enough money at it you can 'fix' it Link to comment Share on other sites More sharing options...
frankenpixel New Member 6 Member For: 6y 2m 28d Posted 15/10/18 12:45 AM Author Share Posted 15/10/18 12:45 AM So everyone who has nolathane diff bushes has a vibration from 90-110kmh?? Is this correct? Just curious, my new looking tailshaft centre bearing is mounted by two bolts to the body of the car...but is gapped by what looks like 2 metal spacers (that the bolt goes through) on each side....I would have thought perhaps these would be rubber standard?? Just trying to work out if that part is normal or not normal Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,128 Member For: 16y 9m 1d Gender: Male Location: Melbourne Posted 15/10/18 12:51 AM Share Posted 15/10/18 12:51 AM take a pic? as it's hard to be sure what you mean by that description? Link to comment Share on other sites More sharing options...
frankenpixel New Member 6 Member For: 6y 2m 28d Posted 15/10/18 01:14 AM Author Share Posted 15/10/18 01:14 AM (edited) Edited 15/10/18 02:16 AM by k31th fixed pic Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,128 Member For: 16y 9m 1d Gender: Male Location: Melbourne Posted 15/10/18 03:05 AM Share Posted 15/10/18 03:05 AM yeah; those spacers are normal. They won't be causing your vibrations. Link to comment Share on other sites More sharing options...
frankenpixel New Member 6 Member For: 6y 2m 28d Posted 16/10/18 03:33 AM Author Share Posted 16/10/18 03:33 AM Anyone know ballpark figure for how much tailshaft balancing should cost? I live in a small city where we have one tailshaft place so im hoping not to get ripped off since they have the monopoly, cheers Link to comment Share on other sites More sharing options...
adams355 Member 529 Member For: 7y 8m 9d Gender: Male Location: Brisbane Posted 16/10/18 04:13 AM Share Posted 16/10/18 04:13 AM $80-$150 dollars these days I would say. Link to comment Share on other sites More sharing options...
masda74 To Loud Gold Donating Members 4,112 Member For: 13y 1m 11d Gender: Male Location: WA, Perth Posted 16/10/18 05:23 AM Share Posted 16/10/18 05:23 AM I have a manual and I do not have the said vibrations. Do keep in mind that I do have an upgraded drive shaft. Aren't the tailshaft and driveshaft the same thing? Link to comment Share on other sites More sharing options...
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