Automobile Magazine: 2008 Infiniti G37 Dyno - 6MT.net Infiniti G35/G37/GTR Forums
User Tag List

 
LinkBack Thread Tools
Old 05-20-2007, 10:14 AM Thread Starter
 
Join Date: Oct 2006
Posts: 365
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
Default Automobile Magazine: 2008 Infiniti G37 Dyno

The 2008 Infiniti G37 Coupe is the first car to use Nissan's new 3.7-liter V-6. Infiniti still hasn't finalized peak output ratings, but estimates that the engine makes 330 horsepower and 270 lb-ft of torque.
The new VQ37VHR engine, as it's called, is the first V-6 sold in the USA to use infinitely variable valve timing in place of a throttle. This system, called VVEL, is the second such system on the market -- BMW's Valvetronic was the first.

We discussed the new engine in depth in previous articles on the G37 (see related links below) so let's cut right to the chase: The new 3.7-liter is only 5.6 percent larger than the old engine, but made almost 22 percent more power on a chassis dynamometer.

We tested the 2007 G35 Coupe 6MT on the same dyno a few months back. When attached to the six-speed manual transmission, its 3.5-liter is rated at 293 hp @ 6400 rpm and 258 lb-ft @ 4800 rpm. Its power peak is very close to the 6600-rpm fuel cutoff - this is an engine that loves to rev. Looking at the dyno chart, you can see that it comes alive just over 2000 rpm and produces a fairly constant amount of torque until just over 5000 rpm. Torque (and the corresponding push in your rear) drops off only slightly, as the engine is still producing over 85% of its peak torque at redline. Impressive indeed.

The G37's engine, however, blows that performance away. It's rated 37 horsepower higher, but the G37 we tested put 51 more horses to the rear wheels. Since this was measured on a chassis dyno, we can't know for sure how much of that increase is due to higher engine output versus lower driveline losses. However, since the drivelines are similar, we'd guess nearly all of this increase is brute force from the new motor. Think about it this way: If frictional losses are a constant percentage, you'd have to add 63 horsepower to the G35's engine to make it put 51 more to its wheels. This is a big, big jump in power.

The best news is that Infiniti wasn't exaggerating about its other claims: the new 3.7-liter is stronger than the 3.5 both at low revs and high revs.
Its torque curve is flatter, too. Throttle response (if you can say that about a car without a throttle) is instantaneous, the 3.5's coarseness has been tamed, and I got an indicated 27 mpg - with the air conditioning switched on at 80 mph - on the way back from the dyno shop. So if there's any drawback to VVEL, we haven't seen it.

See the dyno charts for more information, and be sure to check out the videos to hear the G37 at full bore.

2008 Infiniti G37 Coupe - Dyno Videos - Multimedia - Automobile Magazine









dascrow is offline  
Sponsored Links
Advertisement
 
Old 05-20-2007, 10:15 AM Thread Starter
 
Join Date: Oct 2006
Posts: 365
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
dascrow is offline  
Sponsored Links
Advertisement
 
 

  6MT.net Infiniti G35/G37/GTR Forums > Infiniti G35/G37 News & Polls > Infiniti G35/G37 News / Site News
Thread Tools



Similar Threads
Thread Thread Starter Forum Replies Last Post
First Drive: 2008 Infiniti G37 Coupe dascrow Infiniti G35/G37 News / Site News 26 06-22-2007 09:15 PM
G37 Pics *Automobile Mag* El Calor G37 Coupe 6 05-07-2007 10:38 PM
2008 G37 Photos! 2manycars G35 Coupe 75 03-30-2007 02:20 PM
G35x Owners - Automobile magazine want you! blksnake G35 Sedan 2003-06 0 10-04-2004 07:06 PM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome