G35 vs G37 pics....identical to look at, fantastic dyno numbers
05-20-07, 07:55 AM
#1
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G35 vs G37 pics....identical to look at, fantastic dyno numbers
by automobile magazine...
G37
G35 sedan
2007 vs 2008 horsepower
2007 vs 2008 torque
Souce: http://www.automobilemag.com/r...harts/
G37 dyno video:
http://www.automobilemag.com/m...ideos/
The article itself:
http://www.automobilemag.com/f..._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.
05-20-07, 08:41 AM
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05-20-07, 08:44 AM
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If the engine makes 330 hp, 287HP would represent a ~12.5% drivetrain loss, which is good but not exactly "fantastic". That's about the same as the IS 350 and several other Lexus products.
Also, the 335i still makes more power at the wheels despite a lower advertised rating.
Overall, not bad.
Also, the 335i still makes more power at the wheels despite a lower advertised rating.
Overall, not bad.
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05-20-07, 08:46 AM
#8
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, the front does look better with the non-sport bumper instead of the sport bumper we saw 
05-20-07, 09:18 AM
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having seen a few of these in person, the 1st thing that pops is how w i d e the 37 is. gotta love that. would have been great if they could have lightened it up some. in any case, thank you for building these cars, Nissan. 6-spd manual FTW
05-20-07, 09:33 AM
#15
I love the front but hate the rear. I haven't decided whether to get it or not. I probably will eventually since I hate buying first off the line models. About this time next year, many of the bugs should be worked out. Big problem, I really like the one I have.
Nissan/Infiniti seems to have enthusiasts in mind with these cars. They let you mod them on lease and return it without penalty. They make the car knowing people may mod them. If you don't, it's still worthy. They have power, reliability and looks....even some luxury. Infiniti is doing it!
Just think, they were almost out of business about 5 years ago.
PS...Forgot to add that I'm really hoping Lexus makes an IS coupe. That's the car I really want....as long as it has more room up front for big guys.
Nissan/Infiniti seems to have enthusiasts in mind with these cars. They let you mod them on lease and return it without penalty. They make the car knowing people may mod them. If you don't, it's still worthy. They have power, reliability and looks....even some luxury. Infiniti is doing it!
Just think, they were almost out of business about 5 years ago.
PS...Forgot to add that I'm really hoping Lexus makes an IS coupe. That's the car I really want....as long as it has more room up front for big guys.
Last edited by Ice350; 05-20-07 at 09:43 AM.