Audi R10 (and other Audi racing TDI engines) bore and stroke?

I suspect that I'm chasing a question with no good answer here, but was the bore and stroke of the Audi R10's V12 TDI (or the R15's V10 or any of the R18's V6s) ever declared or discovered?



I've never been able to find a good answer, though I did read on this forum a long time ago that Peugeot did run something like an 84x82mm bore and stroke. Given similar displacement, did Audi run something similar, at least on the V12?