[Boej007]

Did you pick up your RS then nobber?

[Nobber]

Yes mate!  It's on the other thread that you can't see the pictures on!!!

[jonniebrads]

Received thankyou ... 73nm torque on those bolts seams a lot anyone els think that. ?

[Uncle Fester]

Received thankyou ... 73nm torque on those bolts seams a lot anyone els think that. ?

The correct torque for wheel bolts is 120nm so imo 73 nm does not seem excessive.

[Gussman]

Yip, got mine as well - many thanks Nobber!!

[Mr_Freeze]

Can anyone post a pic of the bolts?

Interested to see what markings they have.

Edited by Mr_Freeze, 05 November 2014 - 10:28 PM.

[Gussman]

Freeze - Haven't opened mine yet as not planning on fitting just yet.......

Only markings i can see on them (through the packaging) are stamped on the head itself -  "ARP".

Guess they are made by ARP themselves:

 

http://arp-bolts.com/

[Boej007]

Got mine yesterday to the missus informs me thanks mate

[jonniebrads]

The correct torque for wheel bolts is 120nm so imo 73 nm does not seem
excessive.

Yeah I suppose so it just sounded a lot I thi k there arp

Edited by jonniebrads, 06 November 2014 - 07:49 AM.

[Viraje]

When someone fits these bolts, can they take some close up pictures of the end of the propshaft and the Haldex input plate?

 

It looks like the problem we're seeing is not necessarily due to the specification of the bolts - all they should be doing is clamping the proshaft coupling to the Haldex unit, and any increase in torque *shouldn't* affect this.

 

I suspect there is a problem with the design of the proshaft coupling, or more speficially the metal sleeve inserts fitted in the rubber propshaft coupling itself. These should locate tightly into recesses machined into the Haldex plate, such that the bolts aren't taking any lateral load....

 

 

This is how it should work - the bolts should only be holding the propshaft tight to the Haldex unit and not actually providing any support for the lateral force. The green area should be taking all the force.

 

I suspect that either

 

a ) the recess in the Haldex plate isn't deep enough, 

b ) the chamfer on the propshaft inserts is too much, or

c ) the fit between the two parts is too much, causing the bolts to take some of the load.  

 

Option C sounds the most likely, and would fit with the problems we're seeing across standard and mapped cars - this stress would occur on all cars, but would be accelerated on cars running more torque. It would also fit with the fact that the Haldex unit part is unchanged, but the propshaft has been modified.

 

So while people are swapping these parts out, can you take some close-up snaps of the two parts, and if possible measure the dimensions of the propshaft sleeve and haldex recess with a micrometer, (or at least comment on how tight a fit this is - it should be difficult to pull the propshaft from the Haldex unit. If it just falls off then I think we've found our problem).

[Roy]

Got mine today

Thanks Nob,

And thanks again for sorting this out .

[Nobber]

No worries Roy!

Everyone on the first GB has now paid in full and all bolts have been sent out as of this morning so thanks everyone.

[Gussman]

Received thankyou ... 73nm torque on those bolts seams a lot anyone els think that. ?

 

Just for reference (for the original Audi bolts), Elsawin quotes:

 

 

6 - Bolt

 

q

50 Nm + 90°

 

 

This is for the bolts that go through the coupling (Elsawin refers to this as Flexible coupling with vibration damper) and onto the propshaft.

[Jmcnamee98]

No worries Roy!

Everyone on the first GB has now paid in full and all bolts have been sent out as of this morning so thanks everyone.

Cheers Nobber bolts arrived in work today now to find someone who knows what they are doing to fit them!

[RS3_Will]

Apologies of someone has already mention this, but are the bolts not designed to be weak so they go before the propshaft does?

[Viraje]

Apologies of someone has already mention this, but are the bolts not designed to be weak so they go before the propshaft does?

 

Maybe on a French car, but German engineers don't think that way. If they knew the design was marginal, they would have rectified it, (which is what they appear to have done with a new part superseding the original one).

 

It seems unlikely that a safety feature results in the propshaft smashing around next to the petrol tank.

[Pat]

Personally I say fit the bolts or don't fit the bolts but in either case boot it enjoy if and sod it.....just try not get caught eh ?

[Roy]

Has anyone had  their bolts fitted  yet ????

[Nobber]

Funny you should ask Roy, I had mine fitted today along with some other bits!!

Don't ask me for a write up or how difficult they are to fit etc as I've no idea. I'll ask my tuner how he got on though!!

[Jmcnamee98]

Funny you should ask Roy, I had mine fitted today along with some other bits!!

Don't ask me for a write up or how difficult they are to fit etc as I've no idea. I'll ask my tuner how he got on though!!

It would be good for everyone to get a comparison and photo to the old bolts if possible to see if there is any evidence of wear stretching etc.