Was there any sort of issue that recently happened prior to the "no crank" situation (like overheating)?
You are 100% sure the clunk is at the starter?
What about the headlight on, your pal watches them while you attempt a start, what do they do?
With the starter removed, can you see the condition of the flywheel teeth?
Can you rotate the engine 2-1/2 full revolutions with a wrench or ratchet in it is normal rotational direction? (See picture of my Jeep engine below)
Is this the same starter you had prior to this problem. If not, sometimes manufacturing tolerances vary.
I looked at a picture of your starter, can it be shimmed away from the flywheel with shims?
Wednesday, January 4th, 2017 AT 6:01 PM