v12 Engine block sideview , if used correct it can be strong.
can be scaled down / up (but mind to change the spawn radius)
"mixture" (circle density) , quantity (circle quantity) and idle/top speed (cirlce radius) are adjustable and it is phunlet/scenelet save.
default setting is for maximum strength at good framerate but there are other possible settings.
i know 12 cylinders are a bit much but i finished a v8 and thought about making it a bit stronger...
Gas - left
other things are in scene
if used in a car , i must say the velocity script+spawning only works well up to ca. 100 km/h , on higher velocity the engine won't accelerate any longer /the spawned cirlces will jump out of the block.
I still found no solve for this problem.
