GR Yaris (Gen 2) Stiffer lower torque mount - additional stress on clutch torsion springs?

[AHSwede]

Just curious if when installing a stiffer lower torque mount if that places additional stress on the clutch torsion springs?

I have not heard of those springs ever being an issue, but I was just curious if I am understanding the mechanical forces correctly?

Clutch engages flywheel, torsion springs absorb some initial rotational force/harmonic and the torque mount helps further smooth the whole motion, is that right?

 

[Yaris146]

I don’t think so as you don’t want the engine rotating at all as it will just snap off the exhaust and so on. It can’t be completely rigidly mounted either so they carefully select something in between. The shock forces absorbed by the clutch springs aren’t aligned with the engine rotating around the drive shafts .
It’s a good question though and I see how you are thinking.
I’ve seen snapped springs caused by the clutch not working properly and the shock forces of ramming it in gears over time. I don’t think having soggy engine mounts in that case would have done much to help the clutch.
They are both involved in absorbing rotational load transfer to the wheels but they are trying to achieve different things, that’s my take on it.

 

[Sekred]

Theres no torsion springs in the clutch friction plate because the DMF now absorbs the harmonics from the crankshaft.