A palindrome for a rotating engine part is Rotor.
Could be rotating the engine the wrong direction.
crankshaft
rotator
a engine
You will have a smooth running engine when the rotating assembly is balanced.
By rotating the distributor.
The oil lubricates the rotating parts.
It's attached to the flywheel that is attached to the crank.
Input, fuel and air.Output, rotating energy.
to hold all the reciprocating and rotating parts together in something that most refer to as an "engine"
A bare 283 Chevy engine block with no heads or rotating assembly, aprox 150 lbs.