Vibration

1
Hi folks,

I have a vibration that sets in around 35 kmh and disappears again around 45 kmh. Mildly noticeable again at 90 kmh +
I've eliminated old tyres ( new Cooper ATR 215/75/15 - great tyres )
Also eliminated front CV's. All were replaced after a spring lift kit
was fitted.Together with new OME shocks all round.
It was after the spring kit that the problem became evident.
Leads me to suspect propellor shaft. Anyone have experience in diagnosing this problem ? Or typical symptoms.

20 year old 4WD's are challenging !

Mark
2
My propshaft is vibrating at around 80-90kmh.

Phill



> m.mullet <m.mullet@yahoo.com.au> wrote:
>
> Hi folks,
>
> I have a vibration that sets in around 35 kmh and disappears again
> around 45 kmh. Mildly noticeable again at 90 kmh +
> I've eliminated old tyres ( new Cooper ATR 215/75/15 - great tyres )
> Also eliminated front CV's. All were replaced after a spring lift kit
> was fitted.Together with new OME shocks all round.
> It was after the spring kit that the problem became evident.
> Leads me to suspect propellor shaft. Anyone have experience in
> diagnosing this problem ? Or typical symptoms.
>
> 20 year old 4WD's are challenging !
>
> Mark
3
Definitely sounds like the propshaft UJs to me. I had the same symptoms with mine.

Easiest way to test is to remove the propshaft which is a quick job and can be done with the van on the ground. At least I did mine like that, i've read elsewhere that you need to slacken the front diff mounts.

My UJs had no play in them but they were a bit stiff to move. I've replaced them with pattern UJs. I haven't refitted the shaft yet, sitting with the new VC patiently waiting!

I put a file on the site with the pattern part numbers for the UJs but i have records somewhere if you can't find them.

VW didn't intend the shaft to be rebuilt but the pattern UJs are cheap so if you can press them out yourself it isn't that big a job to try.

Alternatives are buying a new shaft from VW (if you can find one) or a complete replacement from the US like this one:


There is also a bearing in the centre that may cause the vibration. Aidan Talbot in the UK has rebushed this with polybushes as per this article.

http://www.aidantalbot.com/  (look under more stuff)

If this is the problem with mine I may have to wait for the exchange rate to improve and buy the US shaft.

Any other questions, please yell

Gary Cookson


[2 0 / 2 1 Design]
28 Gwynne St
Richmond
Vic 3121
gary@twentytwentyone.net
www.twentytwentyone.net
Tel 3 9429 1868
Fax 3 9421 1110
Mob 0417 352782

On 11/03/2009, at 3:23 PM, m.mullet wrote:

Hi folks,

I have a vibration that sets in around 35 kmh and disappears again around 45 kmh. Mildly noticeable again at 90 kmh +
I've eliminated old tyres ( new Cooper ATR 215/75/15 - great tyres )
Also eliminated front CV's. All were replaced after a spring lift kit
was fitted.Together with new OME shocks all round. 
It was after the spring kit that the problem became evident.
Leads me to suspect propellor shaft. Anyone have experience in diagnosing this problem ? Or typical symptoms.

20 year old 4WD's are challenging !

Mark


4
Gday Mark,

If as you say the problem only started after fitting the taller springs
and OME shocks, I hate to say it, but removing the mods might fix it!
Otherwise, isn't it possible the height change has introduced a
driveline mis-alignment?

Whoever sold you these taller mods, they may also have the answer to
your query as other similar purchasers with this issue may have the
solution.

I've read elsewhere that a cause of vibrations sometimes is NOT prop
shaft but worn out mounts. Given their age, many rubber mounts are
compressed and don't absorb vibrations or keep driveline stable. Food
for thought.

Cheers.

Ken


--- In Syncro_T3_Australia@yahoogroups.com, "m.mullet" <m.mullet@...>
wrote:
>
> Hi folks,
>
> I have a vibration that sets in around 35 kmh and disappears again
around 45 kmh. Mildly noticeable again at 90 kmh +
> I've eliminated old tyres ( new Cooper ATR 215/75/15 - great tyres )
> Also eliminated front CV's. All were replaced after a spring lift kit
> was fitted.Together with new OME shocks all round.
> It was after the spring kit that the problem became evident.
> Leads me to suspect propellor shaft. Anyone have experience in
diagnosing this problem ? Or typical symptoms.
>
> 20 year old 4WD's are challenging !
>
> Mark
>
5
Mark, make sure you let us all know the result when you do find the problem.

I'm pretty sure my engine mounts are not as good as they could be also so you could be on to something Ken.

Cheers
Gary

[2 0 / 2 1 Design]
28 Gwynne St
Richmond
Vic 3121
gary@twentytwentyone.net
www.twentytwentyone.net
Tel 3 9429 1868
Fax 3 9421 1110
Mob 0417 352782

On 11/03/2009, at 8:15 PM, Ken wrote:


Gday Mark,

If as you say the problem only started after fitting the taller springs
and OME shocks, I hate to say it, but removing the mods might fix it!
Otherwise, isn't it possible the height change has introduced a
driveline mis-alignment?

Whoever sold you these taller mods, they may also have the answer to
your query as other similar purchasers with this issue may have the
solution.

I've read elsewhere that a cause of vibrations sometimes is NOT prop
shaft but worn out mounts. Given their age, many rubber mounts are
compressed and don't absorb vibrations or keep driveline stable. Food
for thought.

Cheers.

Ken

--- In Syncro_T3_Australia @yahoogroups. com, "m.mullet" <m.mullet@.. .>
wrote:
>
> Hi folks,
>
> I have a vibration that sets in around 35 kmh and disappears again
around 45 kmh. Mildly noticeable again at 90 kmh +
> I've eliminated old tyres ( new Cooper ATR 215/75/15 - great tyres )
> Also eliminated front CV's. All were replaced after a spring lift kit
> was fitted.Together with new OME shocks all round.
> It was after the spring kit that the problem became evident.
> Leads me to suspect propellor shaft. Anyone have experience in
diagnosing this problem ? Or typical symptoms.
>
> 20 year old 4WD's are challenging !
>
> Mark
>


6
Thanks for that input .
Do you have the part no for the pattern UJ Gary ?
Couldn't find it amongst files ?

Thanks,

Mark
7
Hi Mark

Sorry, maybe i didn't get round to putting it up on the site.

It is an agricultural UNI K5A590 and i bought 2 from Driveline services (www.driveline.com.au) and they cost me $77 all up. They were helpful and had outlets round Oz.

I believe the original VW ones were 27x69.8mm and these are 27x70mm so some light filing of the circlips is needed. I can't remember if circlips were supplied but only 1 needed a little dressing on mine.

The new unis have grease nipples but of course there is no room for those on the VW design so you'll need to put in an appropriate bolt and saw it off flush or use some silicone after degreasing the thread.

If your rubber doughnut has cracks there is a BMW part number 26111106113 from older models BMW saloons.

Good luck and let us know how you get on.

Gary

[2 0 / 2 1 Design]
28 Gwynne St
Richmond
Vic 3121
gary@twentytwentyone.net
www.twentytwentyone.net
Tel 3 9429 1868
Fax 3 9421 1110
Mob 0417 352782

On 12/03/2009, at 5:36 PM, m.mullet wrote:

Thanks for that input .
Do you have the part no for the pattern UJ Gary ?
Couldn't find it amongst files ?

Thanks,

Mark


8
At the last Vic DOTVW, I was speaking to Father & Son Roberts, who had successfully fitted a commonly available universal joint, costing a fraction of the genuine VAG.
 
Father & Son Roberts, can you please remind us what you did?
 
Les
 
 
----- Original Message -----
Sent: Thursday, March 12, 2009 5:53 PM
Subject: Re: [Syncro_T3_Australia] Re: Vibration

Hi Mark


Sorry, maybe i didn't get round to putting it up on the site.

It is an agricultural UNI K5A590 and i bought 2 from Driveline services (www.driveline. com.au) and they cost me $77 all up. They were helpful and had outlets round Oz.

I believe the original VW ones were 27x69.8mm and these are 27x70mm so some light filing of the circlips is needed. I can't remember if circlips were supplied but only 1 needed a little dressing on mine.

The new unis have grease nipples but of course there is no room for those on the VW design so you'll need to put in an appropriate bolt and saw it off flush or use some silicone after degreasing the thread.

If your rubber doughnut has cracks there is a BMW part number 26111106113 from older models BMW saloons.

Good luck and let us know how you get on.

Gary

[2 0 / 2 1 Design]
28 Gwynne St
Richmond
Vic 3121
gary@twentytwentyon e.net
www.twentytwentyone .net
Tel 3 9429 1868
Fax 3 9421 1110
Mob 0417 352782

On 12/03/2009, at 5:36 PM, m.mullet wrote:

Thanks for that input .
Do you have the part no for the pattern UJ Gary ?
Couldn't find it amongst files ?

Thanks,

Mark


9
> Les Harris <leslieharris@optushome.com.au> wrote:
>
> At the last Vic DOTVW, I was speaking to Father & Son Roberts, who had
> successfully fitted a commonly available universal joint, costing a
> fraction of the genuine VAG.
>

Les
Can you get them genuine VAG?
10
Mark,
this is the classic syncro propshaft vibration that has been exhaustively discussed on the US Syncro list.
Firstly, if you have not shifted the prop shaft, front or rear diffs, then there is no way new springs can have any effect on this vibration.
As others have said, there are a number of factors that can affect the propshaft -universal joints, propshaft bush, alignment, engine anlished d front diff mounts.
My Syncro slowly developed vibration after putting in the Subaru engine. I cured it by packing up the rear mounts of the front diff mainly, I also did a careful alignment with a laser level and lubricated the universals with WD40 as they were not smooth.
Once you have established the universals are OK, I would be looking at the engine, gearbox, and front diff mounts. Before you undo any of these, mark their present position, as otherwise you will have to realign it all.

Happy hunting!

Bob Turnbull

(PS - where did you get the front lift springs from? How much lift and how much money? ---extreme lift will push the CV's past their limits)


-

> > Gday Mark,
> >
> > If as you say the problem only started after fitting the taller
> > springs
> > and OME shocks, I hate to say it, but removing the mods might fix it!
> > Otherwise, isn't it possible the height change has introduced a
> > driveline mis-alignment?
> >
> > Whoever sold you these taller mods, they may also have the answer to
> > your query as other similar purchasers with this issue may have the
> > solution.
> >
> > I've read elsewhere that a cause of vibrations sometimes is NOT prop
> > shaft but worn out mounts. Given their age, many rubber mounts are
> > compressed and don't absorb vibrations or keep driveline stable. Food
> > for thought.
> >
> > Cheers.
> >
> > Ken
> >
> > --- In Syncro_T3_Australia@yahoogroups.com, "m.mullet" <m.mullet@>
> > wrote:
> > >
> > > Hi folks,
> > >
> > > I have a vibration that sets in around 35 kmh and disappears again
> > around 45 kmh. Mildly noticeable again at 90 kmh +
> > > I've eliminated old tyres ( new Cooper ATR 215/75/15 - great tyres )
> > > Also eliminated front CV's. All were replaced after a spring lift
> > kit
> > > was fitted.Together with new OME shocks all round.
> > > It was after the spring kit that the problem became evident.
> > > Leads me to suspect propellor shaft. Anyone have experience in
> > diagnosing this problem ? Or typical symptoms.
> > >
> > > 20 year old 4WD's are challenging !
> > >
> > > Mark
> > >
> >
> >
> >
>
11
Phil, No only a complete driveshaft was ever supplied by VW
[2 0 / 2 1 Design]
28 Gwynne St
Richmond
Vic 3121
gary@twentytwentyone.net
www.twentytwentyone.net
Tel 3 9429 1868
Fax 3 9421 1110
Mob 0417 352782

On 12/03/2009, at 6:44 PM, plander@optusnet.com.au wrote:



> Les Harris <leslieharris@ optushome. com.au> wrote:
> 
> At the last Vic DOTVW, I was speaking to Father & Son Roberts, who had 
> successfully fitted a commonly available universal joint, costing a 
> fraction of the genuine VAG.
> 

Les
Can you get them genuine VAG?


12
Hi folks,

as usual a very healthy and helpful discussion thanks.
Of course the spring lift couldn't have altered the alignment.
I find it curious that symptoms often occur by coincidence just
to challenge our ability to solve problems.
Possibly owning a syncro may delay the onset of senility..

The propshaft is coming out on Tuesday just so I can be sure that's
the problem. Will mark it beforehand.
I have the ringing sound at low revs as described on Aidan Talbots site.Anyone tracked down the poly bush as described there ?
So I'm guessing a bush replacement and UJ replacement.
What's the laser alignment procedure ?

Re the springs - gowesty purchased when A$ was @.97
They are maximum lift to allow front camber. 50mm.
Ground clearance with 15" wheels @290mm.
Possibly max out the CV's but I haven't noticed yet.
Combined with OME shocks the ride and handling are better than standard. Less front dive under braking and the same soft ride.
Topping on shocks is an issue. I'm looking into limit straps for
that.

Mark




--- In Syncro_T3_Australia@yahoogroups.com, "Bob & Toni Turnbull" <bobturn@...> wrote:
>
> Mark,
> this is the classic syncro propshaft vibration that has been exhaustively discussed on the US Syncro list.
> Firstly, if you have not shifted the prop shaft, front or rear diffs, then there is no way new springs can have any effect on this vibration.
> As others have said, there are a number of factors that can affect the propshaft -universal joints, propshaft bush, alignment, engine anlished d front diff mounts.
> My Syncro slowly developed vibration after putting in the Subaru engine. I cured it by packing up the rear mounts of the front diff mainly, I also did a careful alignment with a laser level and lubricated the universals with WD40 as they were not smooth.
> Once you have established the universals are OK, I would be looking at the engine, gearbox, and front diff mounts. Before you undo any of these, mark their present position, as otherwise you will have to realign it all.
>
> Happy hunting!
>
> Bob Turnbull
>
> (PS - where did you get the front lift springs from? How much lift and how much money? ---extreme lift will push the CV's past their limits)
>
>
> -
>
> > > Gday Mark,
> > >
> > > If as you say the problem only started after fitting the taller
> > > springs
> > > and OME shocks, I hate to say it, but removing the mods might fix it!
> > > Otherwise, isn't it possible the height change has introduced a
> > > driveline mis-alignment?
> > >
> > > Whoever sold you these taller mods, they may also have the answer to
> > > your query as other similar purchasers with this issue may have the
> > > solution.
> > >
> > > I've read elsewhere that a cause of vibrations sometimes is NOT prop
> > > shaft but worn out mounts. Given their age, many rubber mounts are
> > > compressed and don't absorb vibrations or keep driveline stable. Food
> > > for thought.
> > >
> > > Cheers.
> > >
> > > Ken
> > >
> > > --- In Syncro_T3_Australia@yahoogroups.com, "m.mullet" <m.mullet@>
> > > wrote:
> > > >
> > > > Hi folks,
> > > >
> > > > I have a vibration that sets in around 35 kmh and disappears again
> > > around 45 kmh. Mildly noticeable again at 90 kmh +
> > > > I've eliminated old tyres ( new Cooper ATR 215/75/15 - great tyres )
> > > > Also eliminated front CV's. All were replaced after a spring lift
> > > kit
> > > > was fitted.Together with new OME shocks all round.
> > > > It was after the spring kit that the problem became evident.
> > > > Leads me to suspect propellor shaft. Anyone have experience in
> > > diagnosing this problem ? Or typical symptoms.
> > > >
> > > > 20 year old 4WD's are challenging !
> > > >
> > > > Mark
> > > >
> > >
> > >
> > >
> >
>
13
> m.mullet <m.mullet@yahoo.com.au> wrote:
>
> Hi folks,
>.Anyone tracked down the poly bush as described there ?

This place in SA has them.

http://www.syncrohospital.co.za/PartsForSale.asp

> Re the springs - gowesty purchased when A$ was @.97
> They are maximum lift to allow front camber. 50mm.
> Ground clearance with 15" wheels @290mm.
> Possibly max out the CV's but I haven't noticed yet.

Maybe the extra angle on the CVs could introduce a vibration????????????
14
Hi,
I think they were V8 Comodore of some kind.  I'm in Canada at the moment but when I talk to my old man next I will try and get the part numbers.
 
Cheers,

From: Les Harris <leslieharris@optushome.com.au>
To: Syncro_T3_Australia@yahoogroups.com
Sent: Thursday, March 12, 2009 12:35:32 AM
Subject: Re: [Syncro_T3_Australia] Re: Vibration

At the last Vic DOTVW, I was speaking to Father & Son Roberts, who had successfully fitted a commonly available universal joint, costing a fraction of the genuine VAG.
 
Father & Son Roberts, can you please remind us what you did?
 
Les
 
 
----- Original Message -----
Sent: Thursday, March 12, 2009 5:53 PM
Subject: Re: [Syncro_T3_Australi a] Re: Vibration

Hi Mark


Sorry, maybe i didn't get round to putting it up on the site.

It is an agricultural UNI K5A590 and i bought 2 from Driveline services (www.driveline. com.au) and they cost me $77 all up.. They were helpful and had outlets round Oz.

I believe the original VW ones were 27x69.8mm and these are 27x70mm so some light filing of the circlips is needed. I can't remember if circlips were supplied but only 1 needed a little dressing on mine.

The new unis have grease nipples but of course there is no room for those on the VW design so you'll need to put in an appropriate bolt and saw it off flush or use some silicone after degreasing the thread.

If your rubber doughnut has cracks there is a BMW part number 26111106113 from older models BMW saloons.

Good luck and let us know how you get on.

Gary

[2 0 / 2 1 Design]
28 Gwynne St
Richmond
Vic 3121
gary@twentytwentyon e.net
www.twentytwentyone .net
Tel 3 9429 1868
Fax 3 9421 1110
Mob 0417 352782

On 12/03/2009, at 5:36 PM, m.mullet wrote:

Thanks for that input .
Do you have the part no for the pattern UJ Gary ?
Couldn't find it amongst files ?

Thanks,

Mark



Looking for the perfect gift? Give the gift of Flickr!
15
Hi Mark,
Re Alignment
The links below will give you the idea - the last one gives a good clue leading to the mounts.

Regards,

Bob Turnbull

http://www.thesamba.com/vw/forum/viewtopic.php?t=274976
http://autos.groups.yahoo.com/group/Syncro/message/37424
From: Syncro@yahoogroups.com
Date: 13 March 2009 9:43:27 PM
To: Syncro@yahoogroups.com
Subject: [Syncro] Digest Number 4377





--- In Syncro_T3_Australia@yahoogroups.com, "m.mullet" <m.mullet@...> wrote:
>
> Hi folks,
>
> as usual a very healthy and helpful discussion thanks.
> Of course the spring lift couldn't have altered the alignment.
> I find it curious that symptoms often occur by coincidence just
> to challenge our ability to solve problems.
> Possibly owning a syncro may delay the onset of senility..
>
> The propshaft is coming out on Tuesday just so I can be sure that's
> the problem. Will mark it beforehand.
> I have the ringing sound at low revs as described on Aidan Talbots site.Anyone tracked down the poly bush as described there ?
> So I'm guessing a bush replacement and UJ replacement.
> What's the laser alignment procedure ?
16
Michael,
 
For me, the DOTVW is always too many people and too little time but I am fairly sure that your father told me that he had found a local commonly available and inexpensive universal joint that he had fitted to a prop shaft.  I can't remember if it was greasable or not.  The US owners mention making a similar change.  The grease nipple can't be used when running the prop shaft (clearance problem) but can be screwed in to grease the joints periodically, then plugged.
 
What I remember of the conversation is almost identical to the information that Gary has provided; could well be the same joint.
 
Les
 
----- Original Message -----
Sent: Friday, March 13, 2009 6:14 PM
Subject: Re: [Syncro_T3_Australia] Re: Vibration

Hi,
I think they were V8 Comodore of some kind.  I'm in Canada at the moment but when I talk to my old man next I will try and get the part numbers.
 
Cheers,

From: Les Harris <leslieharris@ optushome. com.au>
To: Syncro_T3_Australia @yahoogroups. com
Sent: Thursday, March 12, 2009 12:35:32 AM
Subject: Re: [Syncro_T3_Australi a] Re: Vibration

At the last Vic DOTVW, I was speaking to Father & Son Roberts, who had successfully fitted a commonly available universal joint, costing a fraction of the genuine VAG.
 
Father & Son Roberts, can you please remind us what you did?
 
Les
 
 
----- Original Message -----
Sent: Thursday, March 12, 2009 5:53 PM
Subject: Re: [Syncro_T3_Australi a] Re: Vibration

Hi Mark


Sorry, maybe i didn't get round to putting it up on the site.

It is an agricultural UNI K5A590 and i bought 2 from Driveline services (www.driveline. com.au) and they cost me $77 all up.. They were helpful and had outlets round Oz.

I believe the original VW ones were 27x69.8mm and these are 27x70mm so some light filing of the circlips is needed. I can't remember if circlips were supplied but only 1 needed a little dressing on mine.

The new unis have grease nipples but of course there is no room for those on the VW design so you'll need to put in an appropriate bolt and saw it off flush or use some silicone after degreasing the thread.

If your rubber doughnut has cracks there is a BMW part number 26111106113 from older models BMW saloons.

Good luck and let us know how you get on.

Gary

[2 0 / 2 1 Design]
28 Gwynne St
Richmond
Vic 3121
gary@twentytwentyon e.net
www.twentytwentyone .net
Tel 3 9429 1868
Fax 3 9421 1110
Mob 0417 352782

On 12/03/2009, at 5:36 PM, m.mullet wrote:

Thanks for that input .
Do you have the part no for the pattern UJ Gary ?
Couldn't find it amongst files ?

Thanks,

Mark



Looking for the perfect gift? Give the gift of Flickr!

17

Gday ALL,

Anyone into this vibration issue, better read the lengthy but worthwhile post from USA yahoo syncro site, the problem was more directly the rubber mounts as opposed to a driveshaft issue. Also there is a UK technical link about universal joints.

goto: http://autos.groups.yahoo.com/group/Syncro/message/40834

Cheers.

Ken


--- In Syncro_T3_Australia@yahoogroups.com, "Bob & Toni Turnbull" <bobturn@...> wrote:
>
> Hi Mark,
> Re Alignment
> The links below will give you the idea - the last one gives a good clue leading to the mounts.
>
> Regards,
>
> Bob Turnbull
>
> http://www.thesamba.com/vw/forum/viewtopic.php?t=274976
> http://autos.groups.yahoo.com/group/Syncro/message/37424
> From: Syncro@yahoogroups.com
> Date: 13 March 2009 9:43:27 PM
> To: Syncro@yahoogroups.com
> Subject: [Syncro] Digest Number 4377
>
>
> &#65532;
>
>
> --- In Syncro_T3_Australia@yahoogroups.com, "m.mullet" m.mullet@ wrote:
> >
> > Hi folks,
> >
> > as usual a very healthy and helpful discussion thanks.
> > Of course the spring lift couldn't have altered the alignment.
> > I find it curious that symptoms often occur by coincidence just
> > to challenge our ability to solve problems.
> > Possibly owning a syncro may delay the onset of senility..
> >
> > The propshaft is coming out on Tuesday just so I can be sure that's
> > the problem. Will mark it beforehand.
> > I have the ringing sound at low revs as described on Aidan Talbots site.Anyone tracked down the poly bush as described there ?
> > So I'm guessing a bush replacement and UJ replacement.
> > What's the laser alignment procedure ?
>

18
Has anyone in Australia ever bought the rubber doughnut?



> Ken <unclekenz@yahoo.com> wrote:
>
>
> Gday ALL,
>
> Anyone into this vibration issue, better read the lengthy but worthwhile
> post from USA yahoo syncro site, the problem was more directly the
> rubber mounts as opposed to a driveshaft issue. Also there is a UK
> technical link about universal joints.
>
> goto: http://autos.groups.yahoo.com/group/Syncro/message/40834
> <http://autos.groups.yahoo.com/group/Syncro/message/40834>
>
> Cheers.
>
> Ken
>
>
> --- In Syncro_T3_Australia@yahoogroups.com, "Bob & Toni Turnbull"
> <bobturn@...> wrote:
> >
> > Hi Mark,
> > Re Alignment
> > The links below will give you the idea - the last one gives a good
> clue leading to the mounts.
> >
> > Regards,
> >
> > Bob Turnbull
> >
> > http://www.thesamba.com/vw/forum/viewtopic.php?t=274976
> > http://autos.groups.yahoo.com/group/Syncro/message/37424
> > From: Syncro@yahoogroups.com
> > Date: 13 March 2009 9:43:27 PM
> > To: Syncro@yahoogroups.com
> > Subject: [Syncro] Digest Number 4377
> >
> >
> > 
> >
> >
> > --- In Syncro_T3_Australia@yahoogroups.com, "m.mullet" m.mullet@
> wrote:
> > >
> > > Hi folks,
> > >
> > > as usual a very healthy and helpful discussion thanks.
> > > Of course the spring lift couldn't have altered the alignment.
> > > I find it curious that symptoms often occur by coincidence just
> > > to challenge our ability to solve problems.
> > > Possibly owning a syncro may delay the onset of senility..
> > >
> > > The propshaft is coming out on Tuesday just so I can be sure that's
> > > the problem. Will mark it beforehand.
> > > I have the ringing sound at low revs as described on Aidan Talbots
> site.Anyone tracked down the poly bush as described there ?
> > > So I'm guessing a bush replacement and UJ replacement.
> > > What's the laser alignment procedure ?
> >
19
Les, I'm pretty sure I had a conversation with Michael's dad where he was suggesting that the agri uni that fits wasn't up to the job because it was designed for an agricultural application and would run at lower speeds than in the syncro it might not be up to spec. The ones from the commodore needed machining to make them fit so not such a simple job.

I don't actually know what the agri machinery they are from is, he may be making a very good point. Most commodores seem to spend most of their life doing burnouts so driveshaft unis are probably fairly tough!

By the way there is no way of screwing the grease nipple in and out of the agri unit once installed, it is all too tight even at full articulation when the shaft is removed.

I believe Rudi on Bribie Island runs the agri uni without drama as that is where the original number came to the list via another member.

I've just had a read of the lenghty article Ken provided and it sounds like a thorough inspection of the rubber mounts and/or replacement would be worth trying if your driveshaft seems essentially ok when you do pull it out. Mine did so i may not have found the problem yet. My van has had most of its rubber hoses and boots replaced in the last year as they were all getting a bit tired.

For most of us the front diff mounts are quite likely the originals.

These vans are surely sent to try us. What amazes me is the ingenuity of some of the enthusiastic syncro owners. Can't be many car clubs where the enthusiasts are fabricating their own laser alignment tools!

I'm off to look at T5 All Motions on carsales... Those Seikel conversion kits look simple and cheap by comparison to owning a T3.

Gary

[2 0 / 2 1 Design]
28 Gwynne St
Richmond
Vic 3121
gary@twentytwentyone.net
www.twentytwentyone.net
Tel 3 9429 1868
Fax 3 9421 1110
Mob 0417 352782

On 14/03/2009, at 9:40 AM, Les Harris wrote:


Michael,
 
For me, the DOTVW is always too many people and too little time but I am fairly sure that your father told me that he had found a local commonly available and inexpensive universal joint that he had fitted to a prop shaft.  I can't remember if it was greasable or not.  The US owners mention making a similar change.  The grease nipple can't be used when running the prop shaft (clearance problem) but can be screwed in to grease the joints periodically, then plugged.
 
What I remember of the conversation is almost identical to the information that Gary has provided; could well be the same joint.
 
Les
 
----- Original Message -----
Sent: Friday, March 13, 2009 6:14 PM
Subject: Re: [Syncro_T3_Australi a] Re: Vibration


Hi,
I think they were V8 Comodore of some kind.  I'm in Canada at the moment but when I talk to my old man next I will try and get the part numbers.
 
Cheers,

From: Les Harris <leslieharris@ optushome. com.au>
To: Syncro_T3_Australia @yahoogroups. com
Sent: Thursday, March 12, 2009 12:35:32 AM
Subject: Re: [Syncro_T3_Australi a] Re: Vibration


At the last Vic DOTVW, I was speaking to Father & Son Roberts, who had successfully fitted a commonly available universal joint, costing a fraction of the genuine VAG.
 
Father & Son Roberts, can you please remind us what you did?
 
Les
 
 
----- Original Message -----
Sent: Thursday, March 12, 2009 5:53 PM
Subject: Re: [Syncro_T3_Australi a] Re: Vibration

Hi Mark


Sorry, maybe i didn't get round to putting it up on the site.

It is an agricultural UNI K5A590 and i bought 2 from Driveline services (www.driveline. com.au) and they cost me $77 all up.. They were helpful and had outlets round Oz.

I believe the original VW ones were 27x69.8mm and these are 27x70mm so some light filing of the circlips is needed. I can't remember if circlips were supplied but only 1 needed a little dressing on mine.

The new unis have grease nipples but of course there is no room for those on the VW design so you'll need to put in an appropriate bolt and saw it off flush or use some silicone after degreasing the thread.

If your rubber doughnut has cracks there is a BMW part number 26111106113 from older models BMW saloons.

Good luck and let us know how you get on.

Gary

[2 0 / 2 1 Design]
28 Gwynne St
Richmond
Vic 3121
gary@twentytwentyon e.net
www.twentytwentyone .net
Tel 3 9429 1868
Fax 3 9421 1110
Mob 0417 352782

On 12/03/2009, at 5:36 PM, m.mullet wrote:

Thanks for that input .
Do you have the part no for the pattern UJ Gary ?
Couldn't find it amongst files ?

Thanks,

Mark




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20
Hi all,

I finally got to the cause of the vibrations. Prop shaft was balanced
and uni joints replaced. No vibes ( only good ones I get from driving
now )
I also replaced one of the inner bushes inside the propshaft to try to eliminate the low rpm ringing I get. Reduced but not eliminated. I guess to remove this noise completely you need to remove the inner bush. A welding and major engineering effort that can wait..
Total cost for this exercise $170.
Syncro going well now and ready for some major excursions to the north west this winter..
I've posted some pics of a sand dune that was the closest I've come to being stopped in the syncro.. Took 3 attempts with 10psi finally getting me up..

Cheers,

Mark