nissan GTR..... sucks?

[Eyekandyboats]

2 brand new Skyrines show up at a SE Wisc. drag strip with dealer plates and plastic still on the interior...

LOL these cars are from rossen Nissan. and arrived with dealer plates which then got taken off. i hope they dont sell these as new...
BTW these cars are meant so that a guy who has never done any racing can win, when its all electrically controlled.. all you have to do is floor it and go.
BTW the Nissan engines are hand built and the h/p is 480 but people have dyno-ed engines any where from 415-500 h/p because of the hand built variances



And the most embarrassing part of it all.................. holy crap son.

[Ub Hauled]

you mean Nissan Skylines...
they are good cars, but here in the us die to the emissions code, they don't have that much power...
actually, I have not seen one for sale around here.

[Eyekandyboats]

no i mean GTR...
emissions codes. no they pass with out any problems right from the factory.

and you have never seen one around because there are only 12 in north america at the moment and none of them have left the dealer ships

[Spot Me 2]

They have the same HP. I can't explain the time difference, but they have the same MPH.
The cars weigh the same, and it takes xxxHP to move a said weight 1320ft to that mph.

[Eyekandyboats]

They have the same HP.

same h/p written down on paper.
but realistic h/p NO they don't. its a fact there engines vary much in terms of h/p due to them being hand built.

[Fluid]

same h/p written down on paper. but realistic h/p NO they don't. its a fact there engines vary much in terms of h/p due to them being hand built.

That is actually a**-backwards Taylor. Handbuilt engines have LESS variability than do mass-produced engines - that's why they hand build them, the quality is much better and they are 'blueprinted' to be as identical as possible. Your 'dyno numbers' are probably taken at the wheels, so the actual flywheel hp is considerably more. (Or did they pull the engines out of the cars to test them? Not likely.) The different dyno numbers are surely due to the use of different dynos - for example Mustang dynos typically give lower numbers than do DynaJet dynos with the same vehicle. Some shops do a better job of keeping their dynos calibrated than other do too. And some shops simply cheat.....

It is very easy for an experienced drag racer to explain the time differences between the two cars - the driver in the right lane is better, had less wheel spin and hooked up harder, didn't miss a shift, etc. The virtually identical trap speeds are an indication of horsepower; ET is more about torque, traction and driver skill. The identical trap speeds tells the story - same hp in both cars.


.

[Eyekandyboats]

thanks Jay.
but machines do one job correctly. they do everything the exact same until something brakes down and then every thing stops.
there job is simple. preform one task with computer precise accuracy. its simple.
if i get my CNC machine to cut me 4 pieces of hardware for a boat.... every single piece of hardware will be exactly the same.
if i get a human to do the same 4 pieces on a "manual mill" each piece will be slightly different and wont be 100% identical.
Okay yes you doing it by hand might be more accurate. but not consistent like a machine.
If i say i will be making a engine putting out 480 h/p i expect that. and lets say the drive train has maybe a 19-22% loss in power due to its 4wd system. then i could see roughly 380-410 h/p at the wheels.
there is alot of information out there regarding the engine variances, and it is true that each engine puts out a different h/p
regardless if the numbers were taken at the wheel or not they should be some what consistent.
not all over the board from 415 h/p to over 500 at the wheels.
i highly doubt even two different manufactured dynos are off THAT much. if they are then i guess i should take my car to the one that ran the GTR up to 500 h/p


drag racing is also the beauty of this car. the car has launch control and full settings so even a totally newbie can drag this car, floor it and go, the launch control changes with the way the engine reacts with the temperate but still the cars are both in the same area.
even if say the driver had a reaction time problem, one second is a hell of alot of time.

[supafastsupra2]

no i mean GTR...
emissions codes. no they pass with out any problems right from the factory.

and you have never seen one around because there are only 12 in north america at the moment and none of them have left the dealer ships

i don't know who told you that but i've seen a few around here and know one that's been modded to hell already

[Fluid]

Taylor you clearly do not understand how factory engines are built. Visit an engine assembly plant sometime and watch. All factory parts are built to tolerances, not all of them are identical; how can they be, they are sourced from all over the world. CNC? Right, lots of those parts in a Nissan. The fact is that 'handbuilt' engines - as Nissan means it - are superior to factory. Think about it Taylor - why would Nissan use that technique on their premium performance vehicle if it wasn't better? I have built over a dozen of my own V-8 and I4 racing engines - believe me, hand-built means blueprinting where all parts are measured to far tighter tolerences than on any factory engine. I'm certain that if you called NISMO or the factory racing team they'd tell you the same thing....

Since I have over 50 dyno runs on my personal vehicles at numerous shops, and you have only your own opinion and 'doubt' about how dynos work - you'd better quit while you're ahead.

Reaction time has nothing to do with ET - how many 1/4 mile passes have you actually made? Not even the sainted GTR is idiot proof. Come back to me in 10 years after you have more actual life experience if you want to talk car 'facts', instead of what you read someplace online. No, make that 30 years - that's how long since I made my first pass.....


.

[Ub Hauled]

Come back to me in 10 years after you have more actual life experience if you want to talk car 'facts', instead of what you read someplace online. No, make that 30 years - that's how long since I made my first pass.....

Touché.

[teach]

Finally I can talk about something on these forums I know about.

I'm a GTR tech in Colorado and have driven 4 of these. The dealership I work at has sold 2 this year (that's as many as our dealership is allowed to sell). The GTR has what is called launch control. For drag racers out there it's basicaly a line lock. Leave that car in drive with the trans in race mode and it will shift faster then you will. It's classified as an automatic but it should be looked at as a manual that shifts itself. No torque convertor for the motor heads here. The inside is built like a manual. Another thing about launch control. We (nissan employees) are never to tell people that it even exists. It's really hard in the trans.

Not sure what the ET diffence is coming from. One of the drivers, guessing the guy on the left, turned off the traction control and broke the wheels loose. With the TCS on I could NEVER get the car to launch bad. Another thing, looking at the rims, notice how one has a darker finish. The lighter finish has a more wintery tire. A little trivia question there. Winter package=lighter colored rims. That would also help the car on the right leave the line better.

Would you believe those two cars have a special paint finish? $3000 extra for the silver.

[domwilson]

That is actually a**-backwards Taylor. Handbuilt engines have LESS variability than do mass-produced engines - that's why they hand build them, the quality is much better and they are 'blueprinted' to be as identical as possible. Your 'dyno numbers' are probably taken at the wheels, so the actual flywheel hp is considerably more. (Or did they pull the engines out of the cars to test them? Not likely.) The different dyno numbers are surely due to the use of different dynos - for example Mustang dynos typically give lower numbers than do DynaJet dynos with the same vehicle. Some shops do a better job of keeping their dynos calibrated than other do too. And some shops simply cheat.....

It is very easy for an experienced drag racer to explain the time differences between the two cars - the driver in the right lane is better, had less wheel spin and hooked up harder, didn't miss a shift, etc. The virtually identical trap speeds are an indication of horsepower; ET is more about torque, traction and driver skill. The identical trap speeds tells the story - same hp in both cars.


.

Well explained. Hand built can mean alot of things. Each is hand assembled from precision parts within defined tolerances or in the case of the older Roll Royces, the engine blocks and internal parts were hand cast and machined.

[Ub Hauled]

A little more info:

http://www.gtrnissan.com/

[domwilson]

Taylor you clearly do not understand how factory engines are built. Visit an engine assembly plant sometime and watch. All factory parts are built to tolerances, not all of them are identical; how can they be, they are sourced from all over the world. CNC? Right, lots of those parts in a Nissan. The fact is that 'handbuilt' engines - as Nissan means it - are superior to factory. Think about it Taylor - why would Nissan use that technique on their premium performance vehicle if it wasn't better? I have built over a dozen of my own V-8 and I4 racing engines - believe me, hand-built means blueprinting where all parts are measured to far tighter tolerences than on any factory engine. I'm certain that if you called NISMO or the factory racing team they'd tell you the same thing....

Since I have over 50 dyno runs on my personal vehicles at numerous shops, and you have only your own opinion and 'doubt' about how dynos work - you'd better quit while you're ahead.

Reaction time has nothing to do with ET - how many 1/4 mile passes have you actually made? Not even the sainted GTR is idiot proof. Come back to me in 10 years after you have more actual life experience if you want to talk car 'facts', instead of what you read someplace online. No, make that 30 years - that's how long since I made my first pass.....


.

That's how long it's been for me as well. I have built alot of engines myself both professionally and personally. Ah...the good ol' days. Man, machine and no computers. I agree with you wholeheartedly on the facts.

[Norcal2500HD]

this was at sacramento raceway a few weeks back....