[V8] This may be too far out even for me....

[Scott Justusson]

Let me put the nail in the coffin for you Roger.  I am a self proclaimed expert on what you are/were considering.  I own a 300k mile A6 (still running, going to the yard), I completed a C4 A6q Avant v8 swap and maintained it for a guy for almost 10 years, I have personally installed 2 PES superchargers on the 2.8, and I own 2 Audi v8s. You are plain wasting your time.  Get the allroad as someone suggests, it solves everything you wish to do, with a fraction of the headaches.  Yes, the 3.6 and 4.2 *fit* in the C4, but it is a shoehorn, a really really really tight shoehorn.  To not get the factory version means every single thing you do is 1off.  Ask me how I know.  The ingolsataudi guy  did it too, read his build thread (actually don't, it is not worth it).  And that car in the words of the owner of the one I maintained who personally road in it, was 'rough' at best.  


An A6 meticulously maintained at 300k should not receive 'another' refresh IMO, it is far cheaper to buy another.  As you contemplate desire for horsepower, it is not with what you have that makes any sense , it's what Audi has waiting for you, fully depreciated.  The allroad 4.2 is the car you desire, without the 1off dump in the toilet of investment dollars.  


I have been on the v8 list since inception.  I know you are not a mechanic, you are loyal to one.  That seals the deal, forget it.  Don't read how it was done, read up on the market price for a pristine 4.2 v8 allroad.  The rest is dreamy chatter that makes me think you need to seek warm weather and sunshine really soon.


Cheers


SJ

Well, as I have already said, it may turn out to be an exercise in frustration. I suspect you are correct in that the ZF transmission might well be too wide at the bell housing to fit, or perhaps too long. It also would make the electric control for the rear axle unnecessary making replacement of the rear axle an unnecessary step.  In the end the ideal situation would be to mate a 3.6 with the existing 100 transmission.I might point out here that the only goals in this entire thread is to 1) extend the useful life of the 100 and 2) add those seventy horsepower that I have thought the car really, really needed.  I know there is no way to get the added power from the 2.8 V6, at least none that I have found out about and I have been looking