one more time :)

[Fi8spider]

double post

[fiat218]

double post

i was told that it possible that when coming from the factory they balance them, in doing to they may drill holes or partcile holes to lighten up the heavy side, so being told this of the fly wheel and pressure platte, it possible that they are done this way, so in putting it together u would not want the manufactured partes together back to back as where they drilles holes to lightin it. i was just tols this from my mechanic, as he showed me on a volks wagaon set up. the fly wheel and pressure plate came from the factory balance

SO i gues i am asking if this is the same with fiats, are they pre drilled to lighting it up to have them balanced

[Fi8spider]

For balancing.

In summary and a bit off topic but relevant to your question.
A heavier flywheel will spin up slower but will hold greater energy. This is preferable for road going cars.
On the other hand, a lighter flywheel will spin up faster but will hold less energy, most preferable for track or high performance.

Back to the vibration, it could be that something is starting to come loose in there, keep an ear on it if gets worse or continues. Vibrations like you mention are not good news for main bearings.

[fiat218]

Pressure plates should be balanced from manufacturer, I know quality ones are.

Sorry fiat218, maybe I missed something, have you had the flywheel off recently, the clutch done or has the car been in storage? Did it just start happening out of the blue?

this has been like this from the day i got it . last fall

[fiat218]

For balancing.

In summary and a bit off topic but relevant to your question.
A heavier flywheel will spin up slower but will hold greater energy. This is preferable for road going cars.
On the other hand, a lighter flywheel will spin up faster but will hold less energy, most preferable for track or high performance.

Back to the vibration, it could be that something is starting to come loose in there, keep an ear on it if gets worse or continues. Vibrations like you mention are not good news for main bearings.

yes!! i am sure what ever is going on ,it can't be too good