A) Isn't AK-2 left in favour of MBT-3000 , which was again failed ? It has 1300 HP engine
B) If you don't know OPLOT has 1200 / 1500 HP engine.
So here you theory of Engine do not hold.
AK -1 engine :- KMDB 6TD-2 6-cylinder Diesel 1,200 hp (890 kW)
MBT 3000 - 1,300 hp (969 kW)
OPLOT - KMDB 6TD-2E 6-cylinder diesel (1,200 hp) or KMDB 6TD-3 6-cylinder diesel (1,500 hp)
Now either you choosing 1200 HP in OPLOT or 1500 HP ? OPLOT and AK has same engines I.e. AK-I and II
If you are choosing 1200 HP then what is using of AK-1 and if 1500HP what is the utility of AK-2? So you engine theory goes waste here , come with another story to make your AK -1 and AK-2 a scuess.
just for your Information , Both engine is liquid cooled ....and IF the engine failed then your AK series engine would also get failed.