cr pd engines

I need ideas guys and girls. I’ll put this as succinctly as I can..... (2010 A3 2.0 tdi 170 CR 110k) CAR HAS BEEN WELL MAINTAINED - FULLY DOCUMENTED FROM NEW. - I have what is best described audibly as a ‘whistle/whine’ - started 2/3 weeks ago - no slow build up that I noticed. - One...

Hi all, I have an 11 plate Audi A3 (2.0 CR engine). Engine has pretty much had it - piles out grey/blue smoke and is ropey. Was thinking about doing an engine swap but the donor CR engines are still really high value, just wondered if anyone has retrofitted an older PD engine to one of these...