Thanks Sean and John!
I have some very good news - I figured out animations! Things were going wrong when exporting, so even though there were animation frames, in VSF everything was piled up at 0,0,0, and there was no animation. Anyway, today I worked around that, and present to you, the animated engine, which also works in game!

Just imagine it's in the engine frame, and is sitting in the
African Queen 
I know it's not perfect, but I'm still very new to animations

(I really hope it operates as one would in real life - I don't really like animating and don't particularly want to have to animate it again!)
I've done it as a pilot animation, so then I could set how fast for it to animate when at full speed, but there are some drawbacks. When at neutral on the throttle, the animation plays at 50%, and will only stop when you're at 0% on the throttle, which is also full speed reverse.
I could have used the engine.x but that animates WAY too fast, so it's not usable for this.
At least it's better than nothing, though!

Now you can sit at the tiller and see the engine clunking away!