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Do other car companies seriously "overrate" engine power?
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07-24-2011, 11:25 PM | #1 |
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Do other car companies seriously "overrate" engine power?
I was just thinking for example, how can a maxima and a 335 both have a 3.5l engine and with twin turbos only have 10 more hp? wtf is that bullshit?
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07-24-2011, 11:37 PM | #4 |
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07-24-2011, 11:38 PM | #5 |
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Maxima's max torque is at 4,400 rpm, the N54/N55's max is at 1k-3k RPM depending on your engine. So basically, you tap on the gas on the 335i and your spine breaks whereas you have to rev up on the Maxima to go anywhere fast
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07-24-2011, 11:41 PM | #6 |
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Actually you'd be surprised how fast a stock new maxima is. That engine is no joke.. I think the bottleneck is the variable transmission which gives great fuel economy but not performance. What makes the 335i faster are the turbos, ZF transmission, tire grip, and balance.
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07-24-2011, 11:44 PM | #7 |
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okay on the 328xi on bmw's site says max torque is 200-3700 ft/lb and the 335xi is similar, so why would a 328xi keep up with the 3.5l altima and maxima?
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07-24-2011, 11:57 PM | #9 |
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The Maxima motor is nothing like the 335i. Inline 6 vs V6, 3 liter vs 3.5 liter. Most dynos show the 335i dynos close to 300 HP at the wheels. Maxima seems to be much slower 0-60 and quarter mile(this could be attributed to weight and cvt transmission), gas milage looks to be about the same. It's not all about the engine, but the package that is wrapped around it. Most anyone that would be concerned with shopping the 2 cars head to head would likely take into consideration what these cars are stock vs stock, and mildly modified vs modified. The potential for the N54 vs VQ for let's say 1k in mods will be enormous.
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07-24-2011, 11:58 PM | #10 |
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stock vs. stock, honestly I don't think a 328xi could keep up with a 3.5L altima or maxima. Keep in mind they used the same engine in the 350Z and G35, both of which easily beat a 328i in a straight road.
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07-25-2011, 12:03 AM | #11 |
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Maxima SV:
Front wheel drive CTV transmission 290 hp 260 ft-lbs 3500 lbs curb weight 0-60 in 5.9-6 335: RWD/AWD 6 speed auto/MT 300 hp 300 ft-lbs 0-60 in 5.1 Edit:
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07-25-2011, 12:19 AM | #13 | |
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altima 3.5L = 270hp/258t @ 3357 lbs with .31 Cd (can have .30 with spoiler) 328xi 3.0L = 230hp/200t @ 3649 lbs with .30 Cd remember, not everybody starts pushing their car from 1500 rpms. the driver can match the revs to take advantage of the max output. this all academic. the nissan is a FWD layout. most would prefer the driving feel of the 328xi which i believe primarily drives with the rear axle and engages the front as needed. there are other categories which tip the scale in the bmw's favor as well, such as design/appearance. |
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07-25-2011, 12:22 AM | #14 |
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Op's like one of my friends. He plainly doesn't understand cars, and yet he's obsessed with them!
I'm judging based on this thread only. |
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07-25-2011, 12:26 AM | #16 |
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with mods vs stock, my car beats my friends 3.5 altima off the line but its close while rolling, I know he can keep up with maximas, I also remember seeing a dyno on google show a 3.5 altima dynoing at around 220whp
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07-25-2011, 12:41 AM | #17 |
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OP, the torque makes enormous difference. I think maxima is about 260 tq which happens late in the rpm range. so by the time 335i is full head of steam, maxima needs a sec or two to really get to its weaker tq max.
add the superior ZF 6 speed vs not for speed CVT transmission on maxima and its gameover. by the way, 335i sedan did legit 4.8 on road test reivews. i dont think you can compare the two... 370Z is comparable in straight line speed. overall package? none in nissan lineup in similar price. only Godzilla (gt-r) can beat 335i but its like the price of 2 335i's. 335i with few K worth of mods will probably hang with godzilla so my point is lets not even compare nissan vs bmw. lol |
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07-25-2011, 02:01 AM | #19 |
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07-25-2011, 02:16 AM | #20 | |
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P.S. I respect Nissan, and both the Altima and the Maxima are excellent cars, but neither is a BMW. OP, compare Infiniti to BMW. That is apples versus apples. |
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07-25-2011, 02:41 AM | #21 |
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Never judge an engine solely on its peak power and torque figures. You have to see the entire graph to get a clear picture of its capabilities.
I googled a stock N54 graph quoting flywheel numbers. Couldn't find one for the N55, so this applies to the 2007-2009 models. I can't find a 2009 (or newer) Maxima dyno. I think it's impossible...there must not be a stock dyno because no amount of googling will find one. What you'll learn is that you need to compare the differences in the graphs at the available RPM speeds. The N54 (and N55) will hold a huge lead over the VQ35 in the Maxima across the entire range, especially down low. The 335i also has better gearing which will multiply the torque at the wheels. Couple this with the Bimmer's larger, stickier tires, better weight distribution, and RWD characteristics and a drag race of any sort, dig or roll, will end up with the BMW taking a clear lead.
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07-25-2011, 05:47 AM | #22 |
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No 3.5L FWD Nissan has ever been limited by "lack of torque" especially at the low-end as far as acceleration goes. If you look at VQ35 dynos you'll also see that they're typically making peak torque as low as 2700-3200rpm. Despite what their ratings say with peak torque being somewhere in the 4xxx rpm range, they actually have torque curves that are pretty darned flat across the whole RPM range. The biggest limit for acceleration for them is lack of traction from being FWD. Almost no high-powered FWD car will 0-60 in anything better than the low-6s range no matter how much power you throw into them simply because of traction. Go to RWD and suddenly you have a lot more traction and can bust into the 5.x range 0-60.
Yes, 40 lb-ft of torque is a BIG difference. Even if the Maxima had 300 lb-ft of torque it still wouldn't be any faster to 60 mph because of traction limitations. Once you've exceeded your traction limit that's it. Trying to throw more power to the ground isn't going to do anything but make it easier to burn up the tires. And no I don't think a 328xi is going to keep up with any 3.5L Maxima or Altima.
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