C4 dual mass flywheel construction?

[69427]

Been trying to help out a young guy with his '89. He's got the engine out, rebuilding it, and he mentioned he cleaned up the flywheel with some solvent. This makes perfect sense to me for a normal one piece flywheel, but I'm unfamiliar with the construction of the dual mass flywheels. Is there any rubber type material connecting the two masses (similar to a harmonic damper) that might be affected by solvents?
Just admitting my ignorance, and wanting to know if solvent/oil is an issue with this part.

Thanks,
Mike

 

[grumpyvette]

http://forum.grumpysperformance.com/viewtopic.php?f=71&t=10625

 

[mrvette]

http://forum.grumpysperformance.com/viewtopic.php?f=71&t=10625

I have the same engine as in that '89 vette, even the block is the same year....

I suspect to just put in a normal flywheel, and get over with it......

:drink: