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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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RE: Turbo vs Naturally aspirated
By 91TTZ on 8/28/2013 5:08:24 PM , Rating: 2
In my experience and imho, you either by an engine that is turbo or you leave it NA. Don't turbo an NA engine unless you're doing a full house rebuild.

I agree with you. The turbo engines usually have several subtle differences to increase reliability. Differences between the NA Z engine and the TT engine:

1. The TT has a lower compression ratio.
2. The NA Z has stainless steel exhaust valves while the TT version has inconel exhaust valves to withstand the higher exhaust temperature
3. The turbo version has different pistons with holes on the bottom for oil squirters to cool the bottom of the pistons
4. The oil squirters are different.
5. The fuel pump is larger to flow more fuel. This isn't on the engine but you'll need it.
6. The ECU is different and uses fuel maps that go beyond vacuum-0 psi.

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