Commodore tail shaft vibration

[Waughy]

Great!! Something else to keep an eye(well ear) out for. Havn't had any
trouble on the VL yet, but I'll wait and see now. Have had a few things play
up lately, why not something else.
Douglas Graves wrote in message ...
>Hi...
>
>Peter James wrote in message <01be5d66$1aac4f20$d1163acb@peter>...
>>Hi all,
>>
>>Any one aware of reasons why the VP and VR commodores suffer from tail
>>shaft vibration when under hard acceleration. If so is it fixable.
>
>
>It is a standard commodore problem - the rubber that supports the centre
>bearing looses its elasticity and allows too much movement of the bearing -
>some were worse than others.
>
>Later...
>
>Michael
>
>

[Peter James]

Hi all,

Any one aware of reasons why the VP and VR commodores suffer from tail
shaft vibration when under hard acceleration. If so is it fixable.

Pete

[gonoN...@bigpond.com.au]

On 21 Feb 1999 17:45:12 +1100, "Peter James" <pet...@tpgi.com.au>
wrote:

extend that to all models VB-VS its a design feature !!! can only be
minimised by keeping the tailshaft centre bearing in top condition.
regards Paul Johnston

[Douglas Graves]

Hi...

Peter James wrote in message <01be5d66$1aac4f20$d1163acb@peter>...

>Hi all,
>
>Any one aware of reasons why the VP and VR commodores suffer from tail
>shaft vibration when under hard acceleration. If so is it fixable.

[Robert Fairbanks]

not only is it the center bearing but it could be the c.v. joint on the
shaft as well.
the problem sometimes goes much further than that, maybe the whole
driveline angles.hope this answers your problem.

rob

[Terry Cheng]

Peter James wrote in message <01be5d66$1aac4f20$d1163acb@peter>...
>Hi all,
>
>Any one aware of reasons why the VP and VR commodores suffer from tail
>shaft vibration when under hard acceleration. If so is it fixable.
>

>Pete

I think the vibration is only on the VN upward models right?

My dad has a VL, and has no vibration at all. I have a VN and the vibration
is a problem, but you just learn to live with it

Terry

[Roddy]

On Sun, 21 Feb 1999 07:14:32 GMT, gonoN...@bigpond.com.au wrote:

>On 21 Feb 1999 17:45:12 +1100, "Peter James" <pet...@tpgi.com.au>
>wrote:
>

>>Hi all,
>>
>>Any one aware of reasons why the VP and VR commodores suffer from tail
>>shaft vibration when under hard acceleration. If so is it fixable.
>>
>>Pete

>extend that to all models VB-VS its a design feature !!! can only be
>minimised by keeping the tailshaft centre bearing in top condition.
>regards Paul Johnston

Yeah i get it on my VN, i have also noticed it on my mates VK Calais.

[Nathan]

Nah, I've replaced the CV and bearings in my VL (5L). Still noticeable on HARD
acceleration.

[Ivan]

It's a standard feature of the Commodore's of that range, VN, VP, VR and
apparently even VS.

David

Peter James wrote in message <01be5d66$1aac4f20$d1163acb@peter>...

[Douglas Graves]

Hi...

Terry Cheng wrote in message <7ap8h6$930$1...@toto.tig.com.au>...

>
>Peter James wrote in message <01be5d66$1aac4f20$d1163acb@peter>...
>>Hi all,
>>
>>Any one aware of reasons why the VP and VR commodores suffer from tail
>>shaft vibration when under hard acceleration. If so is it fixable.
>>
>>Pete
>
>

>I think the vibration is only on the VN upward models right?
>
>My dad has a VL, and has no vibration at all. I have a VN and the vibration
>is a problem, but you just learn to live with it

Nah - all of them had the same problem - just for some reason some cars were
worse than others (non model particular though). I had a IRS VS that even
had the problem (go figure!) and have struck the same trouble with a VC V8,
but my VK calais was magnificent however a mates was terrible (same model).

Later....

Michael

[bazt]

Cant remember the angles but the problem can be fixed by adjusting the angle
of the diff
(ie the angle of the pinion in relation to horizontal)
This was done under warranty on my VR and it fixed the problem for about 2
years .
I presume that sagging rubber bushes misaligned it again as the fault was
starting
to appear again just before I sold it
--
Bazt

ba...@tpgi.com.au
Robert Fairbanks wrote in message <36D003BF...@ultra.net.au>...

[Arnie]

Peter James wrote in message <01be5d66$1aac4f20$d1163acb@peter>...
>Hi all,
>
>Any one aware of reasons why the VP and VR commodores suffer from tail
>shaft vibration when under hard acceleration. If so is it fixable.

It's a problem with 2 piece tailshafts on rigid axles and not just on
Commodores. Getting the angles right helps reduce this vibration and
suspension changes can really upset/improve this. Even things like not
modifying the panhard rod length when changing ride height can affect it.
Also, changing the phasing of the unijoints can help (as well as greasing it
with moly lube etc) and a center bearing in good health will help a lot. It
seems to be less of a problem with IRS as the diff doesn't move around like
in the rigid axle.

Arnie

[Arnie]

[R.Rose]

I can add 2 x VL's to the tally. Haven't done enough kays in the VR yet, but I
wouldn't be surprised.

R

Waughy wrote:

> Great!! Something else to keep an eye(well ear) out for. Havn't had any
> trouble on the VL yet, but I'll wait and see now. Have had a few things play
> up lately, why not something else.
> Douglas Graves wrote in message ...
> >Hi...
> >

> >Peter James wrote in message <01be5d66$1aac4f20$d1163acb@peter>...
> >>Hi all,
> >>
> >>Any one aware of reasons why the VP and VR commodores suffer from tail
> >>shaft vibration when under hard acceleration. If so is it fixable.
> >
> >

[Leath Muller]

In article <36D28240...@interact.net.au>, R.Rose wrote:
>I can add 2 x VL's to the tally. Haven't done enough kays in the VR yet, but I
>wouldn't be surprised.

Add a VR Calais to the list, and count a VR Executive as not having the
problem... :)

Leathal.