A8 w12 head bolts

[Dave w12]

Any one know torque for head bolts is it 40 nm 60 nm then 90 degrees and90 degrees thanks 

[Magnet]

Hello David,

Many thanks for joining, and welcome. 
Where are you picking up your settings and diagram from?

In other words, is the source considered reliable. 2005 may just still come under Haynes manuals or similar. 
All I can say is that the values and tightening torques seem relatively logical, albeit I would have expected the the 1/4 turns to be rather more than that. 

Way forward:- Armed with a box of biscuits, call in to a trusted local VAG independent and ask advice there. They will have access to Autodata (or similar) on-line systems, which should give them the detail you want. ( Take your V5 Incase the VIN is needed). 
The only other important thing I would add, is how accurate is your torque wrench? I have a conventional larger one - from 20n. on, and I trust this with torques greater than say 50Nm. I also have a smaller precision one from about 10Nm and up to about 80, and although it’s a well branded make, and has had little use, I don’t really trust its accuracy on the lower torques, so……

In this colder weather, I would be tempted to torque to 40Nm of an evening, leave overnight, and torque to 60Nm the following morning. 
We take it you are using good quality new bolts. 
Perhaps you could come back to us David, and let us know how you get on. 
Kind regards,

Gareth. 
p.s. All figures quoted as your list, but subject to your confirmation. 

[Dave w12]

Hi the w12 is basically two vr6 engines joined at the crank the right hand head as you sit in car looking out wind screen is the same head and part number as the 24valve vr6 the head uses same amount and size bolts 13 short 7 long bolts so I draw the conclusion that the torque and order should be the same as engine is modular built for parts of other vehicles in vw Audi group. The w12 was not ment to be rebuilt it was a whole unit exchange but head bolts gaskets and valve stem seal are on market as it shares them with other vehicles so hope torque and order should do the job I need 

 

[Dave w12]

[Dave w12]

[Dave w12]

[Magnet]

Thanks Dave,

Do you know who the manufacturer of the gaskets and head bolts are, as opposed to the eBay? supplier? 
I’m sure you will be aware that gasket manufacturers include brands such as Reinz, Payen, etc. so you know what you are buying, along with many other ‘unbranded’ ones. 
Going to take your torque source as read, or double check at specialist? 
Kind regards,

Gareth. 

[Dave w12]

I have been into the garage next to my old work he has software he pays a future for going on my reg number the torque is stage one 30 mm stage two is 50 nm stage 3 is 90 degree stage 4 is 90 degree bolt order is same as picture in this post just make sure you stand side that has 6 bolts down one side I have seen this on screen at garage and can confirm it is correct 

[Magnet]

So now you had  40 + 60 Nm = 100Nm pre angle torque. 
Now you have.    30 + 50 Nm  = 80 Nm pre angle torque. 

Um …? 

[Dave w12]

Yes first figures were for the golf vr6 second is for w12 not found on internet the correct one