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I have seen some 3D CAD pictures of the R8 V8 engine in technical journals and I can also confirm its a 180degree flat plane jobbie...........the V12 crank is quite conventional too - but I cant remember if its spaced at 120 or 60 degree intervals........like someone said above - you can clearly see it of the Audi press release video of the engine internals.........both will be machined from a billet of EN40B steel then gas nitrided for maximum fatigue strength.
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