By watching it rotate and counting
No, you cannot change the rotation direction of an engine easily. The direction of rotation is determined by the design and placement of engine components such as the crankshaft and camshaft. It would require significant modifications to the engine's internal components to change its rotation direction.
Engine rotation is determined by sitting in the driver's seat. But engine rotation is of no consequence when determine firing order. It is the rotation of the rotor in the distributor that is important. That is easily found by removing the distributor cap and bumping the engine over and looking at the rotor. Does it rotate clockwise or counter clockwise?
Tire rotation, Engine rotation, Distributor rotation, there are several things that rotate, need to know which one.
If earth surrounds itself it is known as rotation if earth surrounds the sun then it is known as revolution
rotation of the crankshaft
rotation
The small block chevy turns in a clockwise rotation.
You will need a reverse rotation cam and lifters, reverse rotation front a rear main seals, reverse rotation distributor, and a reverse rotation starter.
Standing in front, looking at the engine, clockwise.
An engine PTO runs off the engine thus the speed is governed by the speed of the engine. A ground PTO is ran from the rotation of the tires. Therefore the speed is governed by the speed of the rotation of the tires.
Clockwise as viewed from the front.
clockwise