Please help diagnose popping sound prior to "diving in"

[billschroeder5842]

Hey All,

Can you help point me in the right direction with a few "check this out" before I start tearing into things? My '91 has about 85k on it and runs smooth with all original (except shocks) suspension components.

I'm getting an intermittent driveline noise and if feels/sounds like it is clutch related. Here are the "symptoms:"

1) Intermittent slight "quick metallic popping" sound. Reminds me of the sound my rear hub shaft makes. (I've taken that thing apart several times to no avail- I now just look forward to hearing it)
2) Seems to be only when I take off from a start, only "pops" once- occasionally and non predictable. Cold or warmed up, makes no difference
3) Feels like when I'm more aggressive (not burn out aggressive) I get the noise. Starting easy and releasing the clutch slowly and there is nothing.
4) Never get the noise in any other gear.
5) No driveline vibration
6) Clutch feels normal and fluids are good

At times I wonder if my dual mass flywheel is having "moments" as the sound "sort of, kind of" reminds me of a "clicker" version.

I appreciate any direction- I know that diagnosing sounds is difficult!