Algodoo

i: ignition
manual start(see the lever at right)

Then marine diesel engine that drives the german submarines at ww1 and ww2 with some updates.
The flywheel at left you can move it behind so you add an axle for drive somthing like a propeller.
You can also see inside from the crankcase doors.
If you like that live a comment and tell me you suggestion for updates!
Thanks alot!!