Japanese Cars Japanese car discussion |
05-02-2008, 03:51 AM
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#1
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Regular User
Join Date: May 2006
Location: SoCal
Posts: 1,570
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not shocking - Nissan GT-R hub dyno results
This is from December 2007 . . .
http://jpcnews.blogspot.com/2007/12/...published.html
Best Car had their GT-R put on a hub dyno and it made the claimed flywheel number at the hubs.
The number was 354.5 kilowatts while the claimed number was 353. In horsepower, that's 475.4 hp at the hubs and the familiar claimed 473 at the crank.
Soo, figuring in 10% drivetrain loss, that would be a whopping 528.2 horsepower at the flywheel. Of course, 10% is just a guess (there'd be less power loss without the wheels on . . . that's why I used a more conservative 10% instead of 15% but that's no guarantee of accuracy.) The other earlier threads on GT-R dyno numbers shows that this is not the first or last word on GT-R dyno runs.
http://www.motorworld.net/forum/showthread.php?t=55448
http://www.motorworld.net/forum/showthread.php?t=55143
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05-02-2008, 09:28 AM
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#2
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Regular User
Join Date: Jan 2004
Location: Melbourne, Australia
Posts: 1,451
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Lol.
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05-02-2008, 10:00 AM
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#3
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Regular User
Join Date: Jun 2003
Location: Toronto
Posts: 6,167
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The thing with turbo cars is that it's highly dependent on air temp, humidity. Who knows, maybe given the right time, it might produce 600hp at the crank.
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05-02-2008, 10:03 AM
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#4
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Regular User
Join Date: Feb 2008
Posts: 219
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Nissan engineers insist the GT-R really does only have 480 hp.
Motohiro Matsumura, president of Nissan Technical Center North America, Inc. in Farmington Hills, Michigan, says our dyno test story, which revealed the GT-R develops 430 hp at the wheels, is basically right. But he insists our estimate of a minimum 15-percent friction losses -- which suggests the GT-R is making 507 hp -- is wrong. Matsumura-san says ultra-low friction bearings in the wheel hubs and transmission, plus the careful alignment of the all-wheel-drive system's propshafts, mean friction losses are reduced to an unprecedented 10 percent or so. We're going to get a GT-R back and conduct some coast-down tests to see if he's right.
http://blogs.motortrend.com/6247428/...ned/index.html
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True or false, that doesn't really matter even if it has some 20-30 hp over the official 480 rating. It's blistering pace relative to the competition isn't about the power-to-weight advantage anyways. I pretty much thought everyone was satisfied with the drag strip test results, no?
Hopefully there'll come the day when all of us will finally learn to appreciate true engineering efforts and leave that stupid hate and stubborn domestic fanboyism behind the door.
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05-02-2008, 11:44 AM
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#5
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Regular User
Join Date: Jun 2003
Location: Texas
Posts: 15,413
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Originally Posted by toffytofik
True or false, that doesn't really matter even if it has some 20-30 hp over the official 480 rating. It's blistering pace relative to the competition isn't about the power-to-weight advantage anyways. I pretty much thought everyone was satisfied with the drag strip test results, no?
Hopefully there'll come the day when all of us will finally learn to appreciate true engineering efforts and leave that stupid hate and stubborn domestic fanboyism behind the door.
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What stupid hate and stubborn domestic fanboyism?
Until I see a GT-R line up against a CGT and go head to head, and actually witness a GT-R blowing the CGT into the weeds I for one call complete bullshit.
Nossan should have stuck to their original pan of "beating the 911 Turbo"
But making up crap that their car would dominate and anihilate the likes of the RT12, Enzo, CGT and Koeniggsegg is laugable.
Note the debate is not aboue Z06 or 911Turbo vs GT-R - so you may as well give up your domestic hate... there is no "domestic" anything in this debate.
Not sure if yo uhave been in and/or aournd the cars mentioned, but the RT12 and CGT are frighteningly fast... and its not just 0-60 in 3.xs tht is fast, we are talking corner entry, mid corner, corner exit, straight away etc.
And to achieve that level of performance to extreme power and weight loss - are we now all to believe that Nissan somehow, in a $75,000 car that uses barely any lightweight exotic structurale material has been able to take a 800lb heavier and 200hp weaker car and somehow made it FASTER??
Please - this is as absurd as someone showing up at an F1 race with an F3000 car and claiming to have a higher lap time than the qualifier.
If thats the case, then lets see it on track side by side.
Because if ture, then this 7:30 time means that the GT-R will visible blow a CGT and RT12 into the weeds.
We are talking anihilate them on the straights, pass them up the inside of corners and outbrake them round the outside dominaiton.
Surely, if possible then Nissan have just reinvented the automobile and every other light weight high power should just go home.
I mean, this GT-R is faster around the 'Ring than even a Caterham Superlight 400?
Bull - shit
I am sure, if this was the case, then Porsche AG would already have been seen thrashing a GT-R around the ring by autospys.
After all, Nissan just rendered all the CGT weight savings pointless.
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05-02-2008, 01:56 PM
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#6
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Regular User
Join Date: May 2006
Location: SoCal
Posts: 1,570
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Quarter mile results? The trap speed says the most about horsepower. This 480 hp 3850 lb car hit 121 mph . . . there are plenty of drag oriented cars with similar ratings that can hook up but still can't achieve that. Yes, I am suspicious. My guess is still 510-515 bhp. a 7-8% difference in power (if only that much) is a pretty major difference. I'd gladly take a 7-8% boost in power in any of my vehicles.
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05-02-2008, 02:28 PM
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#7
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Regular User
Join Date: Feb 2008
Posts: 219
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Originally Posted by 79TA
Quarter mile results? The trap speed says the most about horsepower. This 480 hp 3850 lb car hit 121 mph . . . there are plenty of drag oriented cars with similar ratings that can hook up but still can't achieve that. Yes, I am suspicious. My guess is still 510-515 bhp. a 7-8% difference in power (if only that much) is a pretty major difference. I'd gladly take a 7-8% boost in power in any of my vehicles.
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I myself believe it outputs more than 480hp despite what the president of Nissan Technical Center North America assure us of. Anyway, i'd like to see someone taking that VR38 engine for some real crank measurements and to see what it's really losing through the drivetrain. I'm very curious. Ultra-low friction bearings aside
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05-02-2008, 07:54 PM
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#8
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Regular User
Join Date: Jun 2003
Location: Pagani Productions HQ
Posts: 6,237
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Originally Posted by RC45
What stupid hate and stubborn domestic fanboyism?
Until I see a GT-R line up against a CGT and go head to head, and actually witness a GT-R blowing the CGT into the weeds I for one call complete bullshit.
Nossan should have stuck to their original pan of "beating the 911 Turbo"
But making up crap that their car would dominate and anihilate the likes of the RT12, Enzo, CGT and Koeniggsegg is laugable.
Note the debate is not aboue Z06 or 911Turbo vs GT-R - so you may as well give up your domestic hate... there is no "domestic" anything in this debate.
Not sure if yo uhave been in and/or aournd the cars mentioned, but the RT12 and CGT are frighteningly fast... and its not just 0-60 in 3.xs tht is fast, we are talking corner entry, mid corner, corner exit, straight away etc.
And to achieve that level of performance to extreme power and weight loss - are we now all to believe that Nissan somehow, in a $75,000 car that uses barely any lightweight exotic structurale material has been able to take a 800lb heavier and 200hp weaker car and somehow made it FASTER??
Please - this is as absurd as someone showing up at an F1 race with an F3000 car and claiming to have a higher lap time than the qualifier.
If thats the case, then lets see it on track side by side.
Because if ture, then this 7:30 time means that the GT-R will visible blow a CGT and RT12 into the weeds.
We are talking anihilate them on the straights, pass them up the inside of corners and outbrake them round the outside dominaiton.
Surely, if possible then Nissan have just reinvented the automobile and every other light weight high power should just go home.
I mean, this GT-R is faster around the 'Ring than even a Caterham Superlight 400?
Bull - shit
I am sure, if this was the case, then Porsche AG would already have been seen thrashing a GT-R around the ring by autospys.
After all, Nissan just rendered all the CGT weight savings pointless.
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Don't forget that the nissan gtr r35 is meant is a everyday supercars and it's as easy to drive as a nissan micra
Most people will find it pretty easy to set fast times whit the gtr
But the cgt is more for the hardcore/expert driverss that have plenty of skill so it will be allot harder to set fast times (99.9%) of drives will find it trickey car to drive hard.
Anyway i can't wait wath sort of times the real production gtr's will set.
Maby the will set slower set wo cars.
So please stop comparing a awd to rwd car
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05-02-2008, 09:33 PM
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#9
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Regular User
Join Date: Jun 2003
Location: Texas
Posts: 15,413
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Originally Posted by pagani
Don't forget that the nissan gtr r35 is meant is a everyday supercars and it's as easy to drive as a nissan micra
Most people will find it pretty easy to set fast times whit the gtr
But the cgt is more for the hardcore/expert driverss that have plenty of skill so it will be allot harder to set fast times (99.9%) of drives will find it trickey car to drive hard.
Anyway i can't wait wath sort of times the real production gtr's will set.
Maby the will set slower set wo cars.
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Everything you typed means noting - the GT-R crushed the CGT, Ezno, Zonda, Veyron, Superlight, Radical and tweaked GT2.
Why bring in anything about "regular drivers" - they ar enot being discussed.
Originally Posted by pagani
So please stop comparing a awd to rwd car
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Why not?
BTW, the Veyron and RT12 are AWD cars.
I am not sure i fyou saw the news, but the GT-R crushed the CGT, Ezno, Zonda, Veyron, Superlight, Radical and tweaked GT2 - that means Nissan took an 1800kg car with 480bhp and slower acceleration than anyone else, and went faster.
What' not to compare?
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05-03-2008, 11:16 AM
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#10
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Regular User
Join Date: Jun 2003
Location: Pagani Productions HQ
Posts: 6,237
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Originally Posted by RC45
Everything you typed means noting - the GT-R crushed the CGT, Ezno, Zonda, Veyron, Superlight, Radical and tweaked GT2.
Why bring in anything about "regular drivers" - they ar enot being discussed.
Why not?
BTW, the Veyron and RT12 are AWD cars.
I am not sure i fyou saw the news, but the GT-R crushed the CGT, Ezno, Zonda, Veyron, Superlight, Radical and tweaked GT2 - that means Nissan took an 1800kg car with 480bhp and slower acceleration than anyone else, and went faster.
What' not to compare?
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Here is the laptimes list of the green hell
The radical is still the king
And the cgt is one second faster than the gtr
http://en.wikipedia.org/wiki/Nordsch...test_lap_times
Rc45 please stop spreading bs your times are not correct
Last edited by pagani; 05-03-2008 at 11:23 AM.
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05-02-2008, 09:41 PM
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#11
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Regular User
Join Date: Jun 2003
Location: Toronto
Posts: 6,167
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Originally Posted by pagani
So please stop comparing a awd to rwd car
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It is interesting that you brought this up.
You should have noticed that all cars that set quick times are RWD. The closest AWD with that kinda weight is the LP640, and it's lapping at 7:40 with 640hp Of course, no one knows if it's wearing PZ Corsa or PZ Rosso.
But setup to setup, I will give the advantage to the lambo given the much lower center of gravity and the ceramic brakes means lower unsprung weight.
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05-02-2008, 11:37 PM
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#12
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Regular User
Join Date: Jan 2004
Location: Melbourne, Australia
Posts: 1,451
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Originally Posted by RC45
What stupid hate and stubborn domestic fanboyism?
Until I see a GT-R line up against a CGT and go head to head, and actually witness a GT-R blowing the CGT into the weeds I for one call complete bullshit.
Nossan should have stuck to their original pan of "beating the 911 Turbo"
But making up crap that their car would dominate and anihilate the likes of the RT12, Enzo, CGT and Koeniggsegg is laugable.
Note the debate is not aboue Z06 or 911Turbo vs GT-R - so you may as well give up your domestic hate... there is no "domestic" anything in this debate.
Not sure if yo uhave been in and/or aournd the cars mentioned, but the RT12 and CGT are frighteningly fast... and its not just 0-60 in 3.xs tht is fast, we are talking corner entry, mid corner, corner exit, straight away etc.
And to achieve that level of performance to extreme power and weight loss - are we now all to believe that Nissan somehow, in a $75,000 car that uses barely any lightweight exotic structurale material has been able to take a 800lb heavier and 200hp weaker car and somehow made it FASTER??
Please - this is as absurd as someone showing up at an F1 race with an F3000 car and claiming to have a higher lap time than the qualifier.
If thats the case, then lets see it on track side by side.
Because if ture, then this 7:30 time means that the GT-R will visible blow a CGT and RT12 into the weeds.
We are talking anihilate them on the straights, pass them up the inside of corners and outbrake them round the outside dominaiton.
Surely, if possible then Nissan have just reinvented the automobile and every other light weight high power should just go home.
I mean, this GT-R is faster around the 'Ring than even a Caterham Superlight 400?
Bull - shit
I am sure, if this was the case, then Porsche AG would already have been seen thrashing a GT-R around the ring by autospys.
After all, Nissan just rendered all the CGT weight savings pointless.
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Stop being a child will you.
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05-03-2008, 01:25 AM
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#13
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Regular User
Join Date: Jun 2003
Location: Texas
Posts: 15,413
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Originally Posted by Pokiou
Stop being a child will you.
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I am just saying what most people are thinking.
SO you are willing to say the GT-R will destroy a CGT, Enzo, Radical, Zonda etc anywhere anytime? Even the Veyron?
Do youhonestly think a stock GT-R will out pace a GT3-Cup Race Car?
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05-03-2008, 11:39 AM
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#14
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Regular User
Join Date: Jun 2003
Location: Pagani Productions HQ
Posts: 6,237
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Originally Posted by RC45
I am just saying what most people are thinking.
SO you are willing to say the GT-R will destroy a CGT, Enzo, Radical, Zonda etc anywhere anytime? Even the Veyron?
Do youhonestly think a stock GT-R will out pace a GT3-Cup Race Car?
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Wrong again that is what you think
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05-02-2008, 02:32 PM
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#15
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Regular User
Join Date: Dec 2003
Location: The OC™
Posts: 4,881
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Makes you wonder why all manufacturers wouldn't adhere to just one standard in power measuring. Or why a company would intentionally lie...
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