I know its the opposite end to the clutch but check for the beginnings of timing gear failure. I think in the OP you said the car had been sitting for a while? If so, it's possible that the fibre gear has dried out. When that happens they are more prone to failure. Here's the sound of the failed gear on my B18.
It had been noisy for well over a thousand miles before that. An additional video also shows what happens to the gear.
https://www.youtube.com/watch?v=iXxSRQ0johk