I don't think the turbo has much room to go on peak power. It's a long stroke narrow bore engine. It's never going to rev very high or make a ton of power. And the turbos are pretty likely to run out of breath as well (based on recent similar Toyota engines). There's gains in the mid range to be found. But I'd be surprised to see a lot more at peak. Just not the right engine design. And the turbo is bespoke by Toyota so it's not easy to slap on a bigger one.
I believe it is open deck like the v35a but I haven't seen one apart.
Yeah those are all good points. When I take the benefits of the TT and hybrids into account, its for livability and initial torque.
Same thing with the LX 600, the engine is a downgrade. But around town it will be a lot better.
Personally would take hybrid versions of all these, wether 4 or 6 cylinder, and in no way would I think they will outclass the V8 or V6 they replaced.
Its just a different animal, one that you are forced to induct into your life.
They way I look at it, in frequent city traffic, parking lots etc, I am saving a ton of fuel in both initial low speed acceleration / idle consumption.
Otherwise I have to give drivability to the NA engines hands down in almost every other scenario outside of elevation.
Between the charged vs charged hybrids though, I'm not sure how much the motor design will affect the feel, but I have heard numerous times now from the Tundra review ppl that they prefer the non hybrid. Could be tuning needing adjustments are needed with Toyotas sandwich motor / transmission design.
I bet when done right, that the above would not be the case. In theory the hybrid should fill all the gaps nicely.
But you are right about the hybrid power for example in the Tundra is contributing 48hp? For electric motor that is not much.
Seems easier to forgo these options for the "simplicity" of the plain charged variant.
We have yet to see how long all these engines last. Its only been out 5 years in the case of the 300.
The taco plant is even newer.