Q2 in a t-spark?
By using a 166 t/s gearbox? Errr…… possibly…….
I’m guessing here and as I own a V6 I’ve not done it but…. The 166 t/s uses a similar gearbox to the 156JTD. The gearing is shorter obviously but it’s a v6/JTD style box that you can fit a Q2 into which has been modified to fit a twin spark – I think they just changed the bell housing.
I’ve fitted a 3.0 166 box to my V6 156 so I know it can be done. There are a few differences with a t/s that would need to be overcome:
The slave cylinder is different. On a 156/147 T/S its in the bell housing, on a 166 (+145/155) its on the top so you’d need to sort that out.
You could use V6/JTD gear linkage if that’s different
Mounts are different, could maybe use a 156 v6 subframe and gear box mount - which'll require a 156 v6 diff housing too....
The primary problem is 166’s use a DMF so the clutch is different and a DMF is not a desirable feature and I don’t think you can use a t/s clutch as the 166 uses a pull type clutch rather than a push type.
If this could be overcome, then potentially you could use a 166t/s bell housing to fit a 6speed box….
Just an idea…..