It seems I found a few more details about the new engine block, apparently published for the renewed Nevada but undoubtedly valid for all V7 models. To summarise:
- 70% redesigned/new parts
- Y-formed throttle body, 39mm diam.splitting into 2 36mm intakes with a 38mm valve controlled by a MIU3G Magneti Marelli
- 2 O2 sensors allowing a per-cylinder control of the air/fuel mixture, lower consumption and emissions
- redesigned combustion chambers to adapt to the new intakes and reduce internal turbulence
- new 10mm plugs in a central position
- higher compression (10.2:1 up from 9.2:1)
- new segments to reduce oil consumption
- new cooling fins for better cooling
- new air box lapsus here - is this the correct translation?!
- increased power from 3500rpm upwards
- higher redline
- 51hp @ 6200rpm, 58Nm @ 5000rpm
apart from the engine, I see that the gearbox is supposed to be smoother through an improve shift system
- 70% redesigned/new parts
- Y-formed throttle body, 39mm diam.splitting into 2 36mm intakes with a 38mm valve controlled by a MIU3G Magneti Marelli
- 2 O2 sensors allowing a per-cylinder control of the air/fuel mixture, lower consumption and emissions
- redesigned combustion chambers to adapt to the new intakes and reduce internal turbulence
- new 10mm plugs in a central position
- higher compression (10.2:1 up from 9.2:1)
- new segments to reduce oil consumption
- new cooling fins for better cooling
- new air box lapsus here - is this the correct translation?!
- increased power from 3500rpm upwards
- higher redline
- 51hp @ 6200rpm, 58Nm @ 5000rpm
apart from the engine, I see that the gearbox is supposed to be smoother through an improve shift system