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Infiniti will turn to turbocharged 4- and 6-cylinder engines, hybrids, full electrics

"And another one gone, and another one gone / Another one bites the dust"
 
Well, it looks as though the recently approved CAFE standards that aim to increase automobile fuel economy to 54.5mpg by 2025 have claimed another victim. Infiniti currently has V8 engine options available in its M luxury sedan, FX crossover, and QX sport utility vehicles, but that likely won't be the case in future iterations of those vehicles.
 
According to a report by AutoGuide, increasingly stringent fuel economy and emissions regulations mean that V8 engines are no longer on the table for Infiniti vehicles. V8 engines have traditionally been available in luxury vehicles as a symbol of prestige and power, but Infiniti will look to new ways to bring powerful engines to its lineup while still keeping fuel economy in check.
 
“I don’t think any car that is on Infiniti drawing boards from here onwards we should expect a V8 to be included in that plan,” Johan de Nysschen, Infiniti's global president.
 
Infiniti's 5.0-liter V8 produces 385hp, its 5.5-liter V8 produces 420hp, and its 5.6-liter V8 (truck-based) produces 400hp.


Infiniti to say good-bye to V8 engines
 
There are numerous directions that Infiniti can take with the absence of a V8 engine. Automakers like Ford already have twin-turbocharged V6 engines that develop 365hp while still delivering respectable fuel economy. Even Hyundai is rumored to be getting in on the action with a twin-turbocharged 3.3-liter V6 which generates 395hp.
 
For entry-level and mid-range models will also see a shift in available engines as well. Infiniti's current workhorse engine is the 3.7-liter “VQ” V6, but Nissan is also working on a turbocharged four-cylinder engine to deliver comparable power and vastly improved fuel economy.
 
Other options for Infiniti include fully electric vehicles (like the LE Concept) and additional hybrid models (we’re hoping that Infiniti delivers a production version of the Emerg-E).
 
Infiniti isn't the only luxury maker to drop a V8 engine from its lineup. When Lexus redesigned its mid-range GS sedan, it dropped the 4.6-liter V8 engine option and instead launched the vehicle with a 3.5-liter V6 and a 3.5-liter V6/performance hybrid model for those that want the power of a V8.

Source: AutoGuide



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RE: Wait a minute
By 91TTZ on 9/5/2012 11:42:25 AM , Rating: 2
quote:
I was thinking of the V6's, which I might add are based of a 30+ year old DOHC design (obviously having since gone all aluminum with MPFI, but still not GDI) but the casting and cam runners are identical to those from the 80's originally developed out of the Datsun era.


This is completely and entirely untrue. The VQ engines share hardly anything at all with the older VG V6s that you're referring to. I had a 1986 300ZX Turbo with a VG30ET and I currently have a 1991 300ZX Twin Turbo with a VG30DETT in it. Even those VG engines aren't that similar. The older VG is a SOHC engine, not DOHC. Even aside from the heads, the engine blocks are different. You can't put DOHC heads on the SOHC block, the oil and coolant passages don't line up. The only thing that's similar is the crank, and even that requires modification.

And moving past the VG engines, the VQ engines are even more dissimilar. I can't put any part from a VQ V6 onto my VG. The crank's different, connecting rods are different, pistons are different, heads are different, exhaust manifolds are different, intake manifolds are different- it's an entirely new design.


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