Originally Posted by
GeeRam
Retro Track & Air
Ah, that's who I meant by Retrotec - Retrotec appear to be in an entirely different line of air business!
I know US companies like Vintage V-12s had a large accumulation of Merlin and Allison spares including blocks. Is the basic Merlin engine block the same throughout the series or were the later more powerful versions redesigned?