Was searching for compatiblity of BPY engine blocks (bare, without pistons, rods, etc.) vs CRZA (Mk6 Golf R) or CDMA (Mk2 TTS). Again, I'm referring only to the bottom end. Not the cylinder head. Lots of good threads on what parts are different but nothing specific on the engine block. The engine block does come up as being 'reinforced' in the Golf R and TTS but I think that is just the main caps for the crankshaft, though I don't know that for sure. Doesn't seem to be many definitive answers so hoping one of you experienced people can steer me in the right direction.
My engine block from my Mk2 Audi TTS is scored so going to do a rebuild. Can get my hands on a new BPY engine block for a really good price. Nothing for a new CDMA/CRZA block unless I want to fork out $4000. Forget about used: been looking for the last 4 weeks and nothing. Even on the BPY end they are all very high milage so not worth it.
When I look for Audi parts online it shows the BPY engine block is compatible with my Mk2 TTS. And that's pretty much every site I've checked out. However, I don't trust that data. When I speak to reps they say it's not, so getting mixed messages.