Rail Quest
Member
Ahh just checked and indeed you are correct. I had it in my head the sheds had 645s xD (edit: on further digging, looks like I was thinking of the 57s/59s which are fitted with 645 variants)They don't - it's V12 710 series diesel engine (12N-710G3B-EC, I think), same as in the original EWS 66's. Some later-built 66's have more modern variants of that engine due to changing emissions requirements.
According to Wikipedia (so grain of salt required):
Original spec: 12N-710G3B-EC (as with the 67s)
UIC II spec: 12N-710G3B-U2
EU Stage IIIA spec: 12N-710G3B-T2 (this seems to be whats been fitted to the existing 69s)