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Nissan eventually plans to phase out the V6 for a turbocharged four-banger

Looming EPA regulations have resulted in big changes in the automotive world. We've seen a number of V8 engines give way to turbocharged V6s, while V6 engines in midsize sedans are being tossed or replaced with turbocharged inline-4s.
 
We're also on the cusp of seeing huge weight reductions for iconic automotive nameplates. The Ford is reportedly eyeing a 700-pound weight reduction for the next generation F-150 and a 400-pound weight reduction for the next Mustang.
 
According to a new report from Motor Trend, another fan favorite is going on a diet all in the name of performance and fuel economy concerns. The next generation Nissan Z (codenamed Z35) will lose two inches in width and a whopping 400+ pounds. The huge weight reduction would put the next generation Z below 2,900 pounds.


2013 Nissan 370Z
 
Motor Trend's sources indicate that while Nissan plans to offer the next generation Z with a V6 when it launches, the "master plan" is to phase out the V6 entirely in favor of a turbocharged, 2.5-liter inline-4. The turbo four will reportedly pump out 330hp, putting it on par with the 3.7-liter V6 used in the current 370Z.
 
The weight reduction and move to four-cylinder power should allow the new Z to achieve EPA numbers far better than the current car’s 18/26 mpg (city/highway) with a manual transmission.

Source: Motor Trend



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A turbo I4 always loses to a V6 with VCM
By greenchinesepuck on 8/27/2013 1:18:31 PM , Rating: 2
If you have a V6 with VCM (see 2013 Honda Odyssey for an example) you can shut off from 2 to 4 cylinders depending on the torque/power you need, so you'll get V6 power with I4 fuel economy. Turbo is not necessary, with turbo you'll get the same economy plus much higher maintenance costs. No, thank you but no.




By sorry dog on 8/27/2013 9:52:07 PM , Rating: 2
Speaking of complexity... I'm sure all that variable lifting timing stuff adds a few moving parts here and there.

...and while I don't think your assertion about fuel economy is necessarily wrong, one thing about most factory turbo motors is that they deliver full torque at lower rpm's than a similar powered NA motor. Unless your talking about much bigger displacement, a 4 stroke NA motor has to spin up to get a few more bangs in to deliver the power.


By macca007 on 8/28/2013 3:49:51 AM , Rating: 2
Agree,V8's now have this as well, Displacement on Demand/Active Fuel management just a few terms used for it, Shuts off 4 cylinders when you are cruising lightly around town, Floor it and within a fraction of a second it goes back to V8 mode, On freeway have had it down to 9 litres/100 not bad for a 6 litre V8 with 500+nm torque.
Even when it's not in economy mode it still gets around 11-12 litres per 100 in stop/start traffic, Impressive.
If you want more hp then the turbo or super charger is the way to go, Fuel economy wise I am just not convinced unless you are putting it on a go cart type car that is small and weighs nothing, Which it seems is the way it's all going!
Buzz boxes and death traps, I'll take a large car with crumple zone with large V8. I look forward to the next Gen V V8 with Direct injection which will bring the fuel numbers down even more, Entering V6 territory while still pumping out around 450hp


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