In a manual trans. car- YES, In an automatic it is called a flex plate, since it is only there to start the car.
No, there is no need to replace the flywheel but it is a good idea to have the flywheel surface machined.
No, and you need the flywheel if you expect the car to move. Timing is adjusted in the distributor, not by the flywheel.
yes you can all you need to do is switch the automatic flywheel and putt on a standard flywheel and make sure the clutch from the transmission will bolt up to the flywheel.
The starter is underneath the car on the passenger side. The flywheel is in the transmission bellhousing.
Directly behind the flywheel.
rock car backwards
The flywheel can be cracked or the teeth on the flywheel can be broken or worn. Either of these conditions require the flywheel be replaced. I would also replace the starter when replacing the flywheel. This will prevent damage to the new flywheel from the worn teeth on the old starter.
Bad starter, bad flywheel/ring gear, bad starter/flywheel alignment.
Not unless there was a problem with the drive gear on the starter that makes contact with the flywheel.
Underneath the car. You will have to be able to get under the car to replace it. The starter, on any car I can think of, is always near the Flywheel. So underneath the car going into the Flywheel. One of the large battery Positive cables should be going to it.
A bad flywheel can definitely cause the engine not to turn over. The flywheel has teeth. If the teeth are chipped or broken, then the starter can not engage to spin the engine over.
No, it will have no effect on the flywheel.