Polo 6C 1.2 TSI dogbone mount

[2226]

i'm staring to think that the play/ twitching is coming from clutch plate heart play

How so?
Then again, the 6-speed in my car does have a "loose" feel to it compared to something like the old 020 in my mk1.

[amer6R]

i'm staring to think that the play/ twitching is coming from clutch plate heart play

How so?
Then again, the 6-speed in my car does have a "loose" feel to it compared to something like the old 020 in my mk1.

I have heard feedback from people with 1.4 tsi, that there is this kind of issue.
The part on clutch plate where the input shaft goes thru developes slight play ( where its riveted to outer part of clutch plate). You can hear slight clicking kind of noise on low rpm's like when idling.
I've replaced all cv joints, left side mounts, and i still get that clunk noise and shook thru drive line in some cases.


I might be wrong, but that's what i suspect on my tdi

[2226]

That's very interesting information.
Is this on the Golfs or Polo?
Do those 1.4tsi folks have any pictures of it?

Looks like that input plate is simply held by 3 rivets.

That's a whole gearbox out situation just to confirm too. You going to pull it to check?

I wonder if swapping to an uprated clutch would solve that.
I know there is a stronger clutch with stronger torque spec:
https://www.sachsperformance.com/en/clu ... 548-000050

Can't say I've heard a clicking noise from that side of the engine. Just the fuel pump and injector noises.

I have the "usual" back and forth shunting that people talking about. Wheel hop, vague gearshift, etc. Engine can be moved back/forth easily by hand. I will try this new mount I have now; it might make other things show up better.

[amer6R]

I wont be pulling it to check, people didnt report any failures, just noise and that clunk...

[2226]

A little something-something just arrived from the UK. Best gift yet.

I do question the longevity of the bolt liner on the small-end though; looks like Delrin.

Just fitted this Vibra-Technics mount about an hour ago.
It seems to resolve or rather reduce a new vibration/knock that showed up after the new gearbox mount I fitted settled in.
But damn can this thing cause vibration.

You can feel there's less movement at low revs, and there's only a bit more noise/vibration when driving.
When idling you can barely feel this solid dogbone mount.
However, when you come off idle is where things are different.
Like intensely loud different with panels rattling in the rear doors. Goes away as you pick up revs, but it's annoying.

Can't really say it reduces engine movement that much.

Here's the stock mounts:


And this is with the new dogbone fitted.
See less rattling movement when it starts and stops; this is what is amplified into the shell.
But as I play with the revs it still moves about just as much.



Going to let it settle in over the next day or so, maybe the rubber softens up a bit like the gearbox mount did.
Otherwise, meh, will fit the stock unit and live with floppy mounts.

[Le_Combattant]

Thank you for your feedback.
So seems to be not the right solution.

Just to know, what is the part number you bought. I mean for the official VW.

[2226]

Didn't go with any VW official item.
If I had to order one I'd ask for the recommended 6C0 199 851 AN version.
The dogbone I removed is in perfect condition though. No tears in the rubber.

For the gearbox mount I went with the Febi version of the diesel mount with part number 6Q0 199 555 AT. It definitely has beefier rubber in it, but it's introduced some other vibration on launch that I think is the control arm bushings.

But, yes, this is not the correct solution. Not for a daily driver that spends plenty time idling around.
To be fair, it does solve the issue of driveline shunt that the stock dogbone might be causing.
The gear selection did feel nicer too.
However, I reckon one would need their engine and gearbox mounts for the complete solution. Judging by this dogbone alone, I think the whole kit would have too much vibration.
So on a track car, definitely. But daily driver not so much, at least for me.

But I'm giving it a day to 2 to see if it settles.
Mate of mine reckons we should just run a few 2mm drill bits through it, but I think I can sell this on instead.

I feel like they made the big end a bit too small with too little high durometer rubber.
I have another locally made option I might try that "solves" that issue.

[amer6R]

give it a week of driving

[2226]

Yeah, I couldn't. Switched back to the stock mount yesterday. 5 minute job.

Had to do a drive yesterday so used that to see how it'd work out.
Vibration is less at mid rpm, but it turned out to be absolute disaster while cruising on the highway in 6th.

The rubber in this is stiff; I doubt it will settle at all. If this was down there with factory durometer then it'd work.
But it did prove that resolving the dogbone mount movement does get rid of driveline shunt and makes for a more reactive drive.

I found another locally-made alternative. It uses one of those solid control arm bushes (Audi TT, etc). That might actually work better with more rubber.
I will try it out when there's spare cash again
I might actually pack the current mount with rubber rope of a fair stiffness, just fill up the voids and see.

What's funny is... I lost a filling yesterday. Just back from the dentist now.