Tbmk, that can't be done. Those things are built into the game engine and you'd have to crack the exe open in order to add those things in. I mean, I could be wrong but, that's pretty much how I understood it based on some modding discussions in the past.

Custom engines can made in blender, and then added to the game through TK Aftermarket.
It is a lot of work to make a engine from scratch and make it work with TK Aftermarket.

Originally posted by Multyply:

Custom engines can made in blender, and then added to the game through TK Aftermarket.
It is a lot of work to make a engine from scratch and make it work with TK Aftermarket.

Wait, so... you can make an engine that is able to be assembled / disassembled in-game? Or, it's just all one part that plops into engine compartment... kind of like people making engine covers that 'looks' like an engine but isn't?

Usable engines like vanilla ones.
I'm currently working on a Honda K-Series

You can also make parts for the engines that are currently ingame.

Interesting... only thing I didn't like about that mod was that they change up all the names of stuff in the game.