i remember it, and it was excellent. I’ve created a Blender/examples directory and am throwing everyone’s work in there, but I’ve searched and no files named motor. sorry. A diesel motor has like 3,451 parts, so good luck. It is probably sooooo out of date anyway, with all the armature rewrites it wouldnt run or help anyway. I would do bones for push rods and cranks and pistons to handle the knuckle rotation, and bones for the valves, so that when you stop it, or vary the rpm, it all stays connected and doesnt get out of sync and start backfiring and scaring your cat. oh, sorry. mixing blender and reality again.where are my meds…?