I stumbled over these videos on YouTube. This is a shop in Canada that convert used jet engines (J79/Olympus/etc.) into gas generators. You get to see lots of internal parts on camera, since they're rebuilding them.
Stators, Combustors and Turbines - Turbine Engines: A Closer Look
The Compressor Rotor - Turbine Engines: A Closer Look
Jet Fuel Nozzles - Turbine Engines: A Closer Look
A Closer Look: Main bearing Pt. 1
You can check out his channel, he's got plenty of them.
Also, a couple engine runs, for your pleasure heh.