There isn't any evidence that I know of to suggest any engines were found at all. And even if they were, what happened to the rest of the plane? Planes don't just dissapear when they crash. They leave wreckage.
http://911physics.atspace.com/Pages/Debunking911Myths/Flight93.htm

Issues:

There isn't any evidence that I know of to suggest any engines were found at all.

We talk about the engine component that was found in the very next point Chris tries to debunk...

And even if they were, what happened to the rest of the plane? Planes don't just dissapear when they crash. They leave wreckage.

So did Flight 93.

Mike forgets to mention that debris was found 8 miles from the crash site, 8 miles is a much greater distance than several blocks.
http://911physics.atspace.com/Pages/Debunking911Myths/Flight93.htm

Straw man. This page is about the engine components, therefore that's what has been discussed: no-one has "forgotten" to mention anything.