Fastest Stock 350z 1/4 time.

[Stone629]

ORIGINAL: scg87 I agree w/ you to an extent. Torque and grip both are critical to a good 60'. And I wasn't just talkoing about you, I just quoted your post to rebut the weight misconception. So, it's cool. I was tossing in my two cents.... No problem here either man

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[67mustang302]

ORIGINAL: skaterbasist

I find it hysterical how some of you have no idea of how torque relates to power & acceleration; maybe a real physics class would help (only directed toward a small handful of people).Especially those who state "no torque"... 260 lbs of torque on a 3350 lb car is no torque?Maybe those who state such ignorant statements should test drive one and feel how its gearing takes good advantage of those 260 lb feet of torque

I wouldn't be surpriced to hear the same responces for an 06 S2000: a low 14 second car with with only 162 lb ft of torque cannot possibly run low 14's. Oh wait, it weights 2800 lbs and has excellent gearing doesn't it.

I find the times believeable because, at the track he ran at, the DA's & track preperation are usually excellent compared to most other drag strips. That being said, like many others have stated here, I don't expect to go to my local track and see a stock 07 350Z run 13.2. But that's not that point of that list; the list just shows the BEST times to date for members of My350z.com.

The 2007 350Z is significantly faster than the previous 350Z's. Usually, I would expect it to run mid 13's depending on the DA's & track preperation, and driver ofcourse.

.

THANK YOU!!! You beat me too it, and someone needed to say it.

For those of you who don't understand, let me break it down another way.....THETORQUE THAT A VEHICLE MAKES AT THE FLYWHEEL IS DIFFERENT THAN THE ACTUAL TORQUE AT THE WHEELS!!! And no, I'm not talking about the torque rating a dyno produces, but the ACTUAL torque output. Whatever force the engine makes is multiplied by the transmission gearing, and then multiplied again by the differential gear ratio. The size of the tire is the last thing that determines the actual torque output at the wheels. Example.....an engine makes 300lb-ft at peak torque, and has a 3.00:1 1st gear and a 3.00:1 differential gear, at peak torque rpm the vehicle is producing 2,700lb-ft of torque at the wheels [300lb-ft * 3 * 3=2,700lb-ft](provided a 1ft radius tire is used). If second gear is 2.00:1 and everything else remains the same then torque at the wheels is 1,800lb-ft, and so on and so forth. Torque at the wheels varries with rpm and the gear that you're in, and that's why any car accelerates faster in a lower gear than a higher gear. Now consider the same vehicle with the same tire, but now the engine only makes 250lb-ft of torque, but we change the differential gear to a 4.00:1 ratio. Now the actual torque output in first gear at the wheels is 3,000lb-ft. With an engine that has 50lb-ft less torque output, we used a different gear ratio to multiply the lesser amount of torque to be greater at the wheels.

That's the difference between 2 cars of differing power. Another example is a Formula 1 engine, at peak horsepower rpm of around 19,000(yes, that rpm rating is correct, 2.4L n/a V8's) the torque at that peak hp is only about 220lb-ft. That may not seem like much torque for the world's most technologically advanced and expensive race car, but it comes out to around 800hp. Now imagine the gearing that they use with 19,000rpm and7 or 8 speed transmissions. Those cars have an engine that produces even LESS torque than that of a 07-up 350Z, but they are WAY faster(part of that is that the car only weighs around 1,200lbs with a full fuel load and driver).

Horsepower and torque are so woefully misunderstood. Torque is work, force exerted over a given distance, in the case of a car, lbs(force) measured as a rotating force around a given radius(1 foot being the standard way of measuring). It can be taken for what it is. Horsepower on the other hand is a way of measuring torque relative to the speed of the engine. Horsepower BY ITSELF is totally meaningless. 500hp can mean a lot of torque, or hardly any torque, depending on what rpm it occurs at. But more rpm to use means you can run a lower gear and regain lost torque to the point of a lower geared vehicle with less torque having more torque at the wheels than a higher torque engine in a vehicle with less gearing.

I think it's rather obvious to everyone the role that weight plays in acceleration as well

[fazm]

its too easy to hide certain mods.

like removing the spare tire and jack.
running race gas (especially with a tune meant for it)
tuning the vehicle.
high flow or no air filter (very little gain, but when ur going for et's every bit helps)
removing drive belt(s) from the vehicle freeing up more power.

my v6 was bone stock and went 15.26 (.04 faster than a mag) and with just a tune went 14.91. thats .35 just from a tune. then with a K&N i went 14.73.
so ur looking at half a second with easily hidden mods.

[Simon1]

I read the entire thread and still have a hard time beleiving it.

Maybe a Mustang was behind him in the staging lanes and gave him a little push off the line?

[72MachOne99GT]

Horsepower and torque are so woefully misunderstood. Torque is work, force exerted over a given distance, in the case of a car, lbs(force) measured as a rotating force around a given radius(1 foot being the standard way of measuring). It can be taken for what it is. Horsepower on the other hand is a way of measuring torque relative to the speed of the engine. Horsepower BY ITSELF is totally meaningless. 500hp can mean a lot of torque, or hardly any torque, depending on what rpm it occurs at.

Hey, correct me if this really really basic analagy is somewhat correct.

Torque is essentially the power that the car produces.

Horsepower is sort of a way about how fast it is exerted?

[shifty711]

Wow,

You guys are killing me.

Here are the facts.

The Z is stock. He ran a 13.2 and that is all.

People that are getting butt hurt here dont understand gearing at all for starters.
It seems that you are all in disbelief because you are driving around with a 4.6 liter V8 and cant even fathom a a car with 2 less cylinders and 1 liter less displacement can keep up with your cars.

Welcome to the world of technologically superior and efficient motors and gearing.

[67mustang302]

Torque is the actualwork that the engine generates(force exerted over a given distance, 300lb-ft etc), horsepower is a way of measuring torque relative to engine speed, or how much time it takes to evert the force(lbs) over a given distance(ft). Technically speaking, horsepower(power) is how muchwork(torque) can be done in a given amount time, by definition 33,000lb-ft per minute is 1 horsepower(lifting 33,000lbs a distance of 1 foot in 1 minute, or lifting 1lb 33,000ft in 1 minute is both 1 horsepower of work done). For the purpose of a car engine, horsepower is basically a way of measuring the torque that an engine can produce at a given speed. Though you COULD say that horsepower is how quickly torque is exerted, it's a bit more complicated than that.

For practical application on a car, here's an example. Two engines, A is a bigger engineand B is a smaller engine(stroke is the same, different bores)

If you have an engine that has the same amount of power as another engine(A and B make the same horsepower), that meansthey dothe same amount of work in a given time(in the case of a car, 1 minute, ie rotations PER MINUTE, which is why rpm is vital to understanding engine power), but if B has less torque than A, then all things being equal, it would produce less power....but all things are not equal, since it has the same power as A, then B obviously does something to make up for the lack of torque. So, it turns at a higher rpm, BUT, it's not so much a "doing less work faster" as it is doing the same amount of work in the same amount of time by exerting less force over a greater distance in the same timespan(rpm is actually a distance element, 1 minute remains constant, and it's the number of rotations in that minute that changes). Now enters HP=Torque*RPM/5252, which is actually a simplified version of HP=Force*Distance/Time. Now, here's where it gets a bit complicated, the Force is measured in pounds, and the Distance is measured in feet and we call the Force*Distance work, or torque(300lb-ft for example). In the case of an engine, the Distance is actually going to be the circumference of a circle made as the crankshaft rotates,the arc of the circumferencebeing the center of the crankpin(think of the crankshaft as a circle where the STROKE of the engine is the radius, and the circumference is the Distance in the P=F*D/T equation). The smaller engine B has less torque, that is to say, it exerts the less force over the same distance, which in an enginecan be misleading as it relates to horsepower because the torque rating is ALWAYS standardized to 1 foot of distance. Since the 1 foot is standardized, we then say that engine B, with less torque, produces less FORCE, or lbs, multiplied by the same standard distance as engine A is measured in, or 1 foot. HOWEVER, because engine B runs at a higher RPM, that is to say the crankshaft travels a greater DISTANCE in the same amount of time, we then see that engine B exerts less force(lbs) but multiplied by a greater distance(more rotations of the crank, and remember the same stroke length for simplification) in the same amount of time. So you have less Force, with more Distance in the same time coming out to the SAME amount of power, or that is to say, the same amount of work is done but with less force.

In a car though, this is the kicker, torque is the actual work an engine does(or the force it generates if you will, since the 1 foot is standardized it can be ignored), power measures how much work can be done in a given time, 1 minute for an engine(rpm). An engine with the same power but less torque does so by turning a higher rpm(less force, greater distance), with a higher rpm you can then run a lower gear ratio for better power multiplication and maintain the same speed in gear. The power multiplication from the gear ratio allows you take take less force(fewer lbs in the lb-ft) but multiply it more, and end up with the same torque AT THE WHEELS as a lower rpm engine with more torque. The key though, is to use the extra RPM to take advantage of the horsepower through GEARING. If you fail to gear a similar HP car that makes less torque but at a higher rpm, then you've squandered your rpm advantage and the hp is useless. In reality, what often happens with a car that makes similar power but at a higher rpm, is that if it's geared right(a properly set up car), the lower torque levels are multiplied enough that you end up with MORE torque at the wheels than the higher torque/lower rpm/higher geared car(if you set it up right). Once you understand this relationship you realise it's just simple multiplication, the first number is engine torque and the second number is gearing, the outcome is the force at the wheels, use higher rpm power to have better gearing with lower torque, the simple math is the relationship between the first and second number, 3*2=6(more torqueyengine, taller gear) 2*3=6(less torquey but withlower gear). In both cases the outcome is the same

http://www.epi-eng.com/ET-PwrTrq.htm There's a mathematical proof at the bottom of the page for the equation hp=torque*rpm/5252 that shows the relationship of force, distance and time. As far as where a horsepower came from if you're curious, James Watt observed horses used to lift buckets in mining operations and eventually came to the standardized rating of 1 horsepower being the ability to move 33,000lbs 1ft in 1 minute(or 1lb 33,000ft in 1 minute if you prefer)

And YES I know I have a tendancy to be long winded *Flame suit on*

[ThisBlood147]

ORIGINAL: shifty711

Wow,

You guys are killing me.

Here are the facts.

The Z is stock. He ran a 13.2 and that is all.

People that are getting butt hurt here dont understand gearing at all for starters.
It seems that you are all in disbelief because you are driving around with a 4.6 liter V8 and cant even fathom a a car with 2 less cylinders and 1 liter less displacement can keep up with your cars.

Welcome to the world of technologically superior and efficient motors and gearing.

No one is getting butthurt.The blind believers are overlooking the source of all of our skepticisms.......the fact that this guy is apparently the "only" guy in a stock 07 Z that can pull off a 13.2 ET. Except for one other guy a second behind him......everyone else is pulling 13.6s at best. Sorry, but that casts alot of suspicions on whether or not he was truly stock. Especially considering his short times were comparable to other guys in the top 10.

So....no, this isn't about a bunch of V8 guys getting scared of the 6 cyl imports catching up to them. This is about us putting scrutiny on the validity of this guy's mods at the time. I don't doubt he ran the time. I don't doubt he did it on stock tires. But whether he did it without weight reduction or a tune..........hey, how would anyone really know for sure? In short, if there was a list a mile long of guys in 07 350Zs running 13.2-13.3 times......this whole discussion would be unnecessary.

[fazm]

ORIGINAL: shifty711

Wow,

You guys are killing me.

Here are the facts.

The Z is stock. He ran a 13.2 and that is all.

People that are getting butt hurt here dont understand gearing at all for starters.
It seems that you are all in disbelief because you are driving around with a 4.6 liter V8 and cant even fathom a a car with 2 less cylinders and 1 liter less displacement can keep up with your cars.

Welcome to the world of technologically superior and efficient motors and gearing.

first off, i drive a v6, and it only runs 12 flat lol.

second off. it seems you are overlooking why we are saying what we are.
plenty of gt's have run 13.4-13.6 stock. in the hundreds im sure. if one of them went 13.1 or 13.2 stock, wouldnt u have a hard time believing it?

[IWHINE]

no becuase its a gt that is one letter away from a gto and that runs 12's so surely it would only be a couple tenths behind in the 1/4