AAN vs MC2 block

jesper moreau jesper5ktqm.audi at gmail.com
Thu Mar 29 04:57:34 EDT 2007

Well, I finally have some definitive answers rather than hearsay:

These two blocks are different. The AAN uses an independent sliding timing
belt tensioner than mounts to the front of the block requiring 3 threaded
holes. The MC2 does not have them. The snubber mount on the AAN also uses a
different boss or two for its location. I will be posting pictures showing
these differences as well as the differences between all blocks Audi made
(eventually) for everyones reference. Cheers!

On 3/27/07, Huw Powell <audi at humanspeakers.com> wrote:
> > Hmm, well Chris, what about the TB tensioner on the AAN (MC2 have those
> > drillings/bosses?) I thought not and how about the snub mount bracket...
> > same positions as MC2?
> I'd venture to say that if Chris says they are the same, they are.
> > On 3/27/07, Chris Semple <chris at force5auto.com> wrote:
> >>
> >>Same block.
> >>I need to know what the differences are between the two and if any major
> >>modifications need to be bade to make an MC2 block work for my S6. I'm
> >>speaking of possible oil and or water passage variances, bracket bosses,
> >>clearances ect.... TIA guys!
> --
> Huw Powell
> http://www.humanspeakers.com/audi
> http://www.humanthoughts.org/

Jesper Moreau

'95.5 URs6 Avant mit go fast gizmos
'92 tornado redish S4 (wifes ride)
'91 200 20v - 300hp - parting
'87 5KTQA Projekt 600WHP sick puppy

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