Nice design with good detail.
Splitted it in 5 sections and printed it size x 2.5 to show all the details
What material did you print this in, and what temp settings did you use?? I just tried this and it warped halfway through the print of the engine section in PLA...
I used normal PLA with the standard temp settings on an Ulltimaker 2
Hope you find a solution.
Do you have the split files that I can print?
I posted the files as a remix.