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post #11 of 55 (permalink) Old 06-09-2006, 10:05 AM
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should have some more great z-tune videos soon

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post #12 of 55 (permalink) Old 06-09-2006, 01:37 PM
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I wish there was a way to find out what the Z-Tune ran, so that it could be compared to the goal of 7'45" for the new GT-R.
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post #13 of 55 (permalink) Old 06-09-2006, 04:31 PM
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R34 V Spec II NUR held the fastest lap time for a production car at the Nurburgring at 7:52, seven seconds quicker than the best R33. but i don't know the year. that time has probably been superceded by now.


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post #14 of 55 (permalink) Old 06-09-2006, 04:50 PM
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From the numbers I've found the new Z06 did it four seconds slower then the V Spec II Nur. But I haven't found anything official.


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post #15 of 55 (permalink) Old 06-09-2006, 07:52 PM
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From the numbers I've found the new Z06 did it four seconds slower then the V Spec II Nur. But I haven't found anything official.
The C6 Z06 was slower? It ran ~7'43", so the V-Spec II Nur ran ~7'39"? That's kind of a stretch imho. The new 997 GT3 runs that, and not only does it weigh a good bit less than an R34, but with ~415hp, it's got an advantage in grunt, too.

I wouldn't be suprised if perhaps the GT-R can at least match the Z-Tune in terms of power to weight, if not outright power. After all the carbon fiber and other weight saving measures NISMO used, the Z-Tune still weighs the same as a stock R34. This is because of the extensive chassis bracing used to stiffen the car. The 350Z's FM platform is much stiffer in stock form, and the newer versions(Fuga, and now new V36 Skyline) will only be better. Hopefully Tamura and his crew can just focus on cutting weight, rather than having to increase rigidity much.

Even if the GT-R comes up short in the power to weight, it should definitely be ahead in terms of torque. The GT-R's VQ will be at least 3L, giving the displacement and torque advantage. If the rumors of 3.5-3.7L are true, then torque ought to be around 500lb-ft, maybe more(JGTC 3L produces 520lb-ft!).
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post #16 of 55 (permalink) Old 06-09-2006, 08:04 PM
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Ring laptimes are often "mysterious" if you know what i mean ;)

waitin prolly meant that the Z06 ran 4 sec slower, whatever the faster time was. so if the V-Spec did 7:52, the Z06 did it approx in 7:56.
either you're source is incorrect. or the idea that the Z06 did it 4 sec slower than the V-Spec is incorrect. or the time i sourced is incorrect. but my post is corroborated elsewhere. so who knows. Ring times are too often cited incorrectly as rumor, or just unknown. it is very likely the Corvette did it faster because that car is a good deal lighter than the R34 GTR. one of the supreme disadvantages of the GTR has been it's weight.


something else to note, as i reiterate this schtick here: if Lotus is also developing, at least heavily influencing, the chassis/monocoque (as this is part of the suspension system, really), the GTR will be feather-light, relatively speaking. perhaps lighter than the 350Z. this should take care of the Z06.

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post #17 of 55 (permalink) Old 06-09-2006, 10:22 PM
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something else to note, as i reiterate this schtick here: if Lotus is also developing, at least heavily influencing, the chassis/monocoque (as this is part of the suspension system, really), the GTR will be feather-light, relatively speaking. perhaps lighter than the 350Z. this should take care of the Z06.
I also figure a better handling/more compliant suspension will give the GT-R an advantage in handling, as well as driver confidence.

That 7'43" run by the Z06 was in the hands of Jan Magnussen, a driver for the C6R, which is very close to the C6 Z06. Not only did he say that the run was kinda hairy and that he wouldn't be comfortable going faster, but given Magnussen's qualifications, there probably aren't many people who could drive the car as fast as him, let alone faster.

The GT-R's ultimate performance will probably be more easily accessible to a wider range of people. In the hands of a seasoned pro or the development driver, the GT-R might be able to topple the Z06.
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post #18 of 55 (permalink) Old 06-09-2006, 10:57 PM
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The GT-R's ultimate performance will probably be more easily accessible to a wider range of people. In the hands of a seasoned pro or the development driver, the GT-R might be able to topple the Z06.
You make it sound like the Z06 is the benchmark to which other cars are being judged. I don't know what sources you guys are using, but all this sounds moot when it boils down to technology and the driver. Does a few seconds really matter to the consumer who buys these cars? Probably not. I think I'd be happy to own the Z tune or GT-R no matter what.

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post #19 of 55 (permalink) Old 06-10-2006, 12:27 AM
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^^^yes, absolutely, i'd love the GTR no matter what too. i'm not really worried whatsoever about Corvette. i never have been, despite it's successful foray into LeMans, Rolex, and Sebring, i'm more vigilant of what Porsche, Ferrari, and Aston Martin have been turning out lately. as advanced and cool as the Corvette is, it's seemingly out of it's depth among these cars, but, actually, upon closer examination is a formidable track weapon nonetheless. Corvette runs with the best of them. but the GTR will supercede the C6R/Z06, certainly.

*in due respect, please consider Corvette's recent racing history. it's legit and noteworthy:
(excerpt from):
http://www.americanlemans.com/news/Article.aspx?ID=1898

"The number of consecutive Series wins in GT1 for Olivier Beretta and Oliver Gavin in Corvette Racing's No. 4 Corvette C6.R. The defending class champions won the last five Series events of 2005 (not including a second straight win at Le Mans) before triumphing at Sebring (with Jan Magnussen) by a lap over Aston Martin Racing's No. 009 Aston Martin DBR9."

"The number of career victories in the American Le Mans Series for Beretta. The three-time season champion moved past Corvette Racing teammates Johnny O'Connell and Ron Fellows.

"Each time I win a race with Corvette Racing, I always think, wow that was a good one!" Beretta said. "It looks like every time we go to a race that we need to win, it is another fantastic victory."

...The number of victories by Corvette Racing in the Series. Alex Job Racing is second with 36."

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post #20 of 55 (permalink) Old 06-10-2006, 02:09 AM
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Currently the fastest "production" car (and "loose" doesn't even cover the application of that term) is the Westfield XTR4.

It looks like a kit car because it is, but because Westfield churns them out in high enough numbers pre-built its consider a production car (just like the McLaren F1 used to be the world's fastest production car, but how many did they actually build?) it still counts.

I have the video somewhere of the run. I may post it later. The driver must have the world's largest balls, because that thing is twitchy as all hell and the suspension was set up for a smooth racetrack.....

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Understeer is when you hit the tree with the front wheel.
Oversteer is when you hit it with the back.
Horsepower is how hard you hit the tree...
Torque is how far you drag it...
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