2012 GTR shaves 6secs off 'Ring time'. 0-60 in 2.9seconds!

Re: 2012 GTR shaves 6secs off 'Ring time'. Gains quilted interior and EGO.

TripleM;592337 said:
shud be well matched by the PDK Turbo of 997

It will easily kill a PDK 997TT smoothballs. Porsche is a pussy car. GTR is the king. When the 997TT grows up we can only hope it will be half as good as a GTR> and before you say its a one lap wonder lets see how many times our own god of beauty Fabio has had issues with his 997TT at the track :yikess:
 
Re: 2012 GTR shaves 6secs off 'Ring time'. 0-60 in 2.9seconds!

Shaun;643452 said:
No need to opine...and can forget what any one else opines too. The quantity will speak for itself, especially relative to the cloud of other known quantities. So what is it? :D What was the 8 lap average and the median laptime?

No doubt, but the only thing people are pointing out is that on track and if pushed hard, it does not last. Unless you throw lots more money at the stock car.

Maybe... no one has done it yet though it seems...wonder why. At trackdays, there are all sorts of cars that run lap after lap until full tank is dry at laptimes very close to their best (and not slow either)

Best transponded example seen of a GTR was a a certain workshop GTR at a competition that went around 6 - 7 hot laps, and all of them quite fast. But that GTR was one of those that had lots of money spent on it.... and the tires were still going away quickly because of its weight.

You're the president of the Singapore GTR owners club no? So can you be considered ultra biased?

By the way Lung will be going to the MB track day. A few of the guys there datalog their cars on Racelogic boxes. Grab a look at the data then. Even get Lung to follow the cars around the track and draw some rough parallels. The fastest car there is a Malaysian registered car- PGT3. Would be interesting to see how it fares in the real world. Not highly modified either and not on slicks.... stock suspension and engine/turbos still.


Pity that I didn't have a chance to take the GTR out. I had done a bit to make it more track worthy- full track alignment with fully adjustable arms, power up a bit BUT MOST IMPORTANT, diff/tranny/engine external coolers.

The bigger variable from what I understood for this car was the weight- because of the weight by the 3rd or 4th lap the standard tires would be cooked- it was for this reason that I got a set of slicks for the car as well. But in the end the GTR premium was too much for someone that wants to track the car frequently, and based on the fact that the SL was lighter, barely used tires and didnt have a glass jaw for a tranny, I ended up moving on before I even got the car to the track.

If anyone is looking for a well set up track machine GTR- go to Motorway as my ex car is there. Then bring it to the track, and lets see how it really stacks up.
 
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Re: 2012 GTR shaves 6secs off 'Ring time'. 0-60 in 2.9seconds!

Shaun;642339 said:
The race version of a GTR would have to lose a lot of weight from the road version. 600-800kg lighter is tough to do.. probably gets other breaks like bigger restrictors, etc.

Some claim a stock GTR with about 20K in cooling system upgrades will eliminate overheating even across 10 lappers. But at that weight, the tires....

Yes I was told this too. Point is, for the money there is no better car. If one were to invest the same cash into a GTR that they do into a Lambo or Ferrari or M3 GTS I am placing my bets that the GTR would annihilate those cars over 10 laps.... easily.

Second hand GTR: $210k
Tranny cooling: $15k
Tranny upgrade to clubsport pack: $15k
Full suspension arm upgrade for total adjustability: $8k
Spare set of rims: $3k
20 inch slicks: $7k
Engine upgrade to 680 useable BHP: $15k
One race seat: $2k
Wheel alignment: $0.1k
AP Racing J hooks: $4k
Race brake fluid and pads: $4k

Total $283k

This car would obliterate everything on the straights and be so far ahead that by the time it hit the corners it could take it so much easier around the corners and not cook the tires but still have more grip left given the slicks.

If we need to compare against cars, talk should also be towards dollars spent.... the GTR could be made into a mental track machine with super lightining quick gear shifts if we were to bring cost to a cheap second hand exotic that it would make the exotic's performance look laughable.

Agreed that it is not a track focused car, and definitely not what I want to experience in a track car as I want cornering capability over brutal power, but for the money nothing comes close I would imagine. Just wish I had taken mine to the track before I sold it so I could have had first hand experience at the limit. Suffice to say on the road, pushing the car is far easier than the GT3 or SL by a mile. So car for car, not caring for driving skill, or feel, the GTR has me sold.

I sold the GTR to buy the SL simply because I worship toto.
 
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Re: 2012 GTR shaves 6secs off 'Ring time'. 0-60 in 2.9seconds!

dude...medicine time.
 
Re: 2012 GTR shaves 6secs off 'Ring time'. 0-60 in 2.9seconds!

timechaser;643525 said:
That's what happened in my not-so-hot laps last time. The tire pressures peaked and control was gone.

As tyre pressure does not rise by itself, perhaps you meant to say tyre temperatures exceeded its performance range ?

For example, in extreme heat, approximately 37 degrees ambient temps, track temp unknown, at 30 psi cold (front), after 2 heats with interval, 5 laps each, the core temp of the outer section (front) in a Bridgestone RE55, SR2 compound can spike up to 65 degrees(measured via temp probe in pit). At that temp, pressures obtained after 1 cool down lap remained on average, the plus side of 42 psi.

Lets be realistic here. I am no Ayrton Senna or remotely close. On my 3rd heat, my laptimes were approximately within three tenth of a second. That was only after tyre temps cooled down a little (vaguely remember about low 40s C ?) followed by releasing of tyre pressures, I knocked off about six tenth of a second.

Prior to that, on first 2 heats, laptimes tumbled in a downhill trend as I progressed on each lap.

Perhaps people may speculate on my driving and that I was learning more on the first 2 runs, but at the time, the feedback I was receiving from the car, my body senses were telling me the car was more willing to trace the line on the 3rd heat when tyre temp and pressure dropped.

Just my experience.
 
Re: 2012 GTR shaves 6secs off 'Ring time'. 0-60 in 2.9seconds!

harold996tt;643539 said:
Yes I was told this too. Point is, for the money there is no better car. If one were to invest the same cash into a GTR that they do into a Lambo or Ferrari or M3 GTS I am placing my bets that the GTR would annihilate those cars over 10 laps.... easily.

Hi mate, problem is, no one every makes comparisons on the same basis. There is power for power, tire for tire, cost for cost, weight for weight, model for model, running costs etc. Then in terms of metric there is single lap, 5 laps, 10 laps, 12 hours, 24 hours, one tank, 100 litres fuel, 200 litres fuel, 1 set of tires limit, 3 sets, 10 sets, etc. It all never ends.

One can easily say that a Lotus Exige with an aluminium V8 and proper cooling costing only X and weighing only Y would be king for 24 hours, 4 sets tire limit, and minimal running cost after initial cost (which is still relatively very low), and it probably would be true. But in the end, I think most are only interested in what is done, not what can be done, or what has been done only a couple of times (rarely done).

Lastly, slicks are not immune to overheating and wearing out. It is very difficult to have slicks that offer high mu, yet resist wear under high loads at relatively bad alignment due to roadcar suspension compromises. No magic bullet tires unfortunately.

Yes I will at the MB trackday with Lung. Keith and I are friends, and I know you guys are too, but to be factual, for all the good stuff I have heard from him about GTR performance on track, there is very little evidence of it, in fact zero. This, despite that I know he has the ability to capture it because I supply him the systems to. I know his guys know how to use it, and have offered assistance if the capture is critical - like a targetted, 22, 23 etc.. This is not to say that those good laps never happened. It just reduces greatly the possibility that they really did.

It's like Usain Bolt at the Olympics. He's there, officially being timed, there are checks for cheating, and the world is watching. It is possible that there is some other fastest man in the world, who is much faster, but just too humble, doesn't want to give his secrets away, etc. And people can talk about this mysterious fellow and his super speed, but odds are he just doesn't exist, and even if he did, people shouldn't really care because it's never been proven. Usain Bolt and all his competitors at the Olympics would and should laugh at the mention of this group that likes to make claims from the shadows while never coming out and actually doing it. It makes a joke of Usain and the other open and honest runners, and makes a joke of the Olympics and all other competitions internationally.

There is word of these mysterious godly cars and drivers in every car club, from every marque, every trackday, today, and in history. The thousands of godly mystery cars and drivers can do whatever they want in whatever secret shadow world they live in. I prefer to just deal with real times, real drivers and cars, not folk lore.

When Nissan ran the GTR at Nring and set that time that people found difficult to believe, they were sure to run a camera and a logger or two. They didn't say, "oh we did this time, but we have another time that is 15 seconds quicker set two months ago, just that we forgot or couldn't afford a 200 dollar plug and play logger." No sane person / company does that.

In the enthusiast realm, it is easy to borrow a logger for absolutely free, especially when trying to get a good time down on record and the situation looks promising. Like I have mentioned before, there are 20 brands of cheap loggers internationally, at least 3 brands in Singapore, and over 80 enthusiasts who own them. It is easy to buy one or get free use of one. Just a matter of whether a driver wants to or not.

No offense to anyone ok.. cheers
 
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Re: 2012 GTR shaves 6secs off 'Ring time'. 0-60 in 2.9seconds!

AC Schnitzer;643544 said:
As tyre pressure does not rise by itself

?

Tire pressures rise as the tires heat up
 
Re: 2012 GTR shaves 6secs off 'Ring time'. 0-60 in 2.9seconds!

harold996tt;643539 said:
Tranny cooling: $15k
i had TWO coolers for the tranny- hks and dodson. plus hks intercooler with gigantuan ducts to curb engine oil temp. still couldn't last more than 1 or 2 hot laps. car was only running about 580 crank hp i.e. a mild tune. anyone who claims to go beyond 2 hot laps without hitting limp mode just ain't driving it hard enough

on average, each t day, i only found time to do about 6 hot laps. so could u imagine how slow the learn rate was?!

that was before the later power boost to almost 700hp/1k nm, just for kicks; unfortunately, sold it b4 i had a chance to track that setup. would have been a super fun one-lap toy
 
Re: 2012 GTR shaves 6secs off 'Ring time'. 0-60 in 2.9seconds!

Shaun;643552 said:
?

Tire pressures rise as the tires heat up

That was what I meant.

If there is no change in tyre temp, there should not be any changes in tyre pressure.

As tyre temp increases, tyre pressure increases.

I'm using the analogy that hypothetically if one were to increase the tyre pressure steadily till it blows, there should not be a sharp rise in temperature.

What I was trying to say is that I feel that tyre temperatures is more important as every tyre has a sweet spot for optimum performance at certain temperature range. When tyre temp is below or above the sweet spot, performance may not be as good.

In saying that, you can try to increase or decrease tyre pressure to manage tyre temps a little.

A high tyre pressure to begin with is most likely not going to perform very well from the beginning and you probably don't have to wait till the 8th lap for that to happen. Generally it may quicken the pace at which tyre temps increase.

When tyre pressures peaked, the cause was probably a result of high tyre temp.

I feel that a high tyre temp or specifically tyre temp above the tyre's sweet spot has a more adverse effect and probably explains why timechaser said "The tire pressures peaked and control was gone."
 
Re: 2012 GTR shaves 6secs off 'Ring time'. 0-60 in 2.9seconds!

Last time my chem and physics teacher taught me PV = nRT
 
Re: 2012 GTR shaves 6secs off 'Ring time'. 0-60 in 2.9seconds!

harold996tt;643539 said:
Just wish I had taken mine to the track before I sold it so I could have had first hand experience at the limit.
silly, silly b@stard but we still luv u ;)
 
Re: 2012 GTR shaves 6secs off 'Ring time'. 0-60 in 2.9seconds!

AC Schnitzer;643558 said:
I feel that a high tyre temp or specifically tyre temp above the tyre's sweet spot has a more adverse effect and probably explains why timechaser said "The tire pressures peaked and control was gone."

Yes, could be temps, pressures, both, who knows? Until each area is measured heheh

Acccelerated loss of grip from simple errors:

starting pressures slightly high
lapping starts
carcass temps rise
pressures rise
patches shrink
load per unit area at patch rises, causing much higher temperatures in narrow region.
If driver doesn't adapt his driving, or a constant overdriver anyway, then sliding and slipping increases
Even higher temps in narrow region, turning rubber into grease
unhappy driver condemns tire

In reality the problem very well could be driver not knowing how, or not bothering to patiently set a hot temp (not a single bleed, but double or triple, even quadruple bleed - try it you'll be surprised), over driving or not adapting to the car / situation.
 
Re: 2012 GTR shaves 6secs off 'Ring time'. 0-60 in 2.9seconds!

To be fair, nearly all road cars are pigs anyway. There are shades of pig though. In my opinion:

Piglet: 1.2 to 1.4 tons
Pig: 1.4 to 1.8 tons
Pregnant Pig: 1.8 tons and higher

:D
 
Re: 2012 GTR shaves 6secs off 'Ring time'. 0-60 in 2.9seconds!

Shaun;643620 said:
To be fair, nearly all road cars are pigs anyway. There are shades of pig though. In my opinion:

Piglet: 1.2 to 1.4 tons
Pig: 1.4 to 1.8 tons
Pregnant Pig: 1.8 tons and higher

:D

Heng ah mine is 1395 kg, so piglet
fat piglet ....:thumbsup:

Ai eat siu yiok mai?
 
Re: 2012 GTR shaves 6secs off 'Ring time'. 0-60 in 2.9seconds!

TripleM;643840 said:
Heng ah mine is 1395 kg, so piglet
fat piglet ....:thumbsup:

Ai eat siu yiok mai?

your one no more siu yoke... its kiddy Cup cake liao with the Smurfy colour.. :shakemyb:

slap on some slicks man!!
 
Re: 2012 GTR shaves 6secs off 'Ring time'. 0-60 in 2.9seconds!

Jack has already been on slicks for a long time!
 
Re: 2012 GTR shaves 6secs off 'Ring time'. 0-60 in 2.9seconds!

Shaun:

GTRs have always intrigued me. I find myself constantly looking at SGcarmart in the hope that somehow a four-door R35 will magically appear.

Do you have any data on how long a GTR with off-the-shelf cooling mods (such as the ones mentioned by Harold) might last on the track? I'm talking flat out hot laps.

My Evo X lasts barely 3 hot laps before things start to go. Gotta get a pyrometer, but I think its the tires first.
 
Re: 2012 GTR shaves 6secs off 'Ring time'. 0-60 in 2.9seconds!

Shaun;643620 said:
To be fair, nearly all road cars are pigs anyway. There are shades of pig though. In my opinion:

Piglet: 1.2 to 1.4 tons
Pig: 1.4 to 1.8 tons
Pregnant Pig: 1.8 tons and higher

:D

Family photo -- piglets / piggies overtaking pregnant mommy :D:D:D

View attachment 30793
 
Re: 2012 GTR shaves 6secs off 'Ring time'. 0-60 in 2.9seconds!

JW, I don't know exact range of transmission and engine cooling options on the GTRs, but I am sure it varies widely.

Most tracked GTRs even those with aftermarket and extra coolers, go 2 + hotlaps, 3rd gets interrupted by warnings and limp soon after. The ones I've seen go longer than that, are all workshop GTRs and I would not doubt those are the ones with 20K spent on cooling, another 20K here, 20K there.

Read Vex's experience above with his GTR. Go ride around with some of the GTRs at the trackdays you go to. Look at the times and temps.

Please don't get a GTR if you really want to get your laps in on trackdays and progress as a driver. Instead, upgrade from pig to piglet, or from pig or piglet to focused cars :D Nice piglets to develop new level of appreciation for sport driving in (get manual)... GT3, Cayman, Boxster, Evora. Going more focused.. Exige, Elise. Then there are trackcars.
 
Re: 2012 GTR shaves 6secs off 'Ring time'. 0-60 in 2.9seconds!

Hahah Arthur, cool photo. No offense intended yeah? Not saying pigs aren't great cars in many other ways.. just less so in long stint track performance, running costs, driver education, etc.
 
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