On the road at last

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On the road at last

Postby aruntaylor » 24 Jan 2019, 20:47

I am on the road at last. Passed my MOT no advisories. Only took me 8 years and about 8 grand.
Everything works it seems. Yet to go off road though but I put in a new ( thanks Brickwerks/Aidan/Holman’s) front diff and VC on Monday so expecting greatness.

Mine is a RHD doka with RJES Subaru 2.5 plus 4:57 ratio Aidan boxes with decoupler, Canopy from Jason, everything else rebuilt by myself with Brickwerks parts and a whole lot of knowledge and support from this forum. Thanks for that.

So I have a question for y’all. There is vibration at 45 mph ish and quite noticeable in my a*** but not wobbly or dangerous feeling. I have tried to line up the front diff as best I can and the propshaft has been rebuilt and balanced. Is it normal to feel this or do I need further lining up of the transmission/diff? If so is there a best procedure?

I am running road based Yokohama 354 tyres so there is little road vibrations ( i have a set of steels with dirty mud terrains to hopefully one day see a greenlane or two with some other Syncro’s one day.)

Thanks
Arun
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Re: On the road at last

Postby silverbullet » 24 Jan 2019, 21:35

Hi Arun,

A few questions:
Can you "drive through" the vibes?
Was it stood on its tyres for ages?

I used to get cyclic vibes at a couple of speeds, turned out to be flatted alloys! Got them refurbed and all was well.

Ian

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Re: On the road at last

Postby aruntaylor » 24 Jan 2019, 23:13

No doesn’t feel like the tyres feels different, like the transmission out of line? Maybe.
Tyres fitted today all balanced up drove it on the other tyres too.
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Re: On the road at last

Postby aruntaylor » 24 Jan 2019, 23:14

Also haven’t been passed 60 and yes getting less vibey not been on a motorway yet.
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Re: On the road at last

Postby silverbullet » 25 Jan 2019, 07:58

Transmission mounts: real rubber or polyurethane? The latter have been proven to transmit vibrations with certain engines iirc
Is the engine good? 45mph was the speed that another syncro developed a nasty vibe and after everything on the drivetrain was changed/swapped/removed (and I do mean everything) it turned out to be a duff recon motor finding a resonant frequency of the bodyshell...

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Re: On the road at last

Postby aruntaylor » 25 Jan 2019, 22:44

Everything is new and everything is excellent. Literally everything. The engine and diff mounts are new and rubber version.
So I loosened front diff bolts drove 10 minutes tightened it all up and its better. Not completely free of vibes (40-50 mph and goes up to 70 ok) but definitely better. The front diff mount although completely tightened up still allows some movement up and down if the diff is levered against the chassis with a tool/bar/spanner etc.
Anyone know if this is normal?

I have not driven another Syncro and not really had a good look around one so only going by the Bentley YouTube and here really. I am in Sussex if anyone has a perfectly driving vehicle for me to compare?
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Re: On the road at last

Postby aruntaylor » 26 Jan 2019, 00:20

No obvious pictures of the front front diff mount in the manual or the web if anyone has one.
Also I have the rubber donut at the gearbox end of the propshaft again nothing obvious anywhere.
Thanks.
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Re: On the road at last

Postby irishkeet » 26 Jan 2019, 08:16

Arun congrats.....lets see some photos :mrgreen:
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Re: On the road at last

Postby silverbullet » 26 Jan 2019, 11:02

Front wheel bearing installation? If done incorrectly it is possible to spoil the bearings and dimple the tracks, which will cause a noise. Don't know if it causes vibration though.

Not being a doomsayer, just trying to eliminate the unlikely.

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Re: On the road at last

Postby Aidan » 26 Jan 2019, 15:37

spacer plates on both front driveshaft inner cv joints ?
front diff front mount rubber/diff/rubber/big flat washer/small washer/nut
front diff yoke mount nylon blocks between the rubbers 180' to each other so they interlock properly as they sandwich the bar
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Re: On the road at last

Postby silverbullet » 27 Jan 2019, 10:31

Lots of pics here

https://www.thesamba.com/vw/forum/viewt ... ?p=7894150

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Re: On the road at last

Postby aruntaylor » 27 Jan 2019, 22:39

Hi
Yes to cv joint spacers.
All bearings and CV’s recently fitted.

“front diff yoke mount nylon blocks between the rubbers 180' to each other so they interlock properly as they sandwich the bar”

I have:
The pair at the side of the diff correct but the single mount at the front I cannot find an image of. Does that have the plastic interlocking washer too? I don’t have one at the front just the rubbers either side of the diff mount.
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Re: On the road at last

Postby silverbullet » 28 Jan 2019, 07:47

Sounds correct to me Arun.

Here's a curiosity...no spacers shown anywhere on this (etka?) image

https://www.iauto.lt/vag/VW/Typ_2_syncr ... =100072489

Is the nose mount bracket fitted the right way up? It should drop into the subframe, like a baking tray.

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Re: On the road at last

Postby Aidan » 28 Jan 2019, 07:52

no plastic interlocking washers on the front mount the rubbers just sandwich the diff case
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Re: On the road at last

Postby aruntaylor » 28 Jan 2019, 20:54

Ok. Thanks for the info folks. Seems I have everything correct. Must be just out of line, i will try again to line it up later this week. I will probably remove the propshaft to feel the van without it and give it an inspection. Also is the prop the right wat round? Rubber donut at gearbox end?
Anyone else had this vibration issue after removing and refitting engine/gearbox/diff/propshaft.
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