I used the cool model by CATIAV5FTW to make a clock. I remixed the fan and the cone to adapt the clock mechanism. The second hand is glued to the cone, so it sping with the clock.

assembly tips:

1. the numbers fit in an specific blade, so first find the correct place to add the clock mechanism correctlt. Use the picture a reference.
2. you may need to cut clock hands to fit insede the engine
3. Glue the cone stripe and tip before glue to clock the second hand

For the mecanism i use this one from amazon:

https://www.amazon.es/dp/B0C4TMR43L?ref=ppx_yo2ov_dt_b_product_details&th=1

the model is design for these dimensions. Specially important the 22mm core.