370Z weigh 1499 Kg with a full tank of gas?

dyezak · 12-22-2008, 03:58 PM

Quote:

Originally Posted by frost

Since the Bose sub is located inside the actual spare, does anyone know if we will be able to remove all the spare tire junk while still keeping the speaker there and vibration-free?

Not a concern of mine. Base 370z + Sports package for me

WHEEL WEIGHTS:

I did some checking and indeed the factory Rays are claimed to be VERY VERY light. Speculation is in the range of 20% lighter than the NISMO wheels that were on the 2007 NISMO. That's simply incredible. Without spending a fortune on wheels (or going to a smaller diameter which is not legal in the B Stock class that I'm talking about), you'd be hard pressed to drop more than 1lb per corner from wheel weight. I found the Enki RP03 in factory sizes that will be about 1lb/wheel lighter for about $380/wheel. If you want to drop a significant ammount of weight (3-4lbs) per wheel then you would need to go with some custom forgline or ccw wheels ($1500~/wheel).

Personally I will be using the stock wheels for autox (with Hoosiers on them), and a set of custom wheels for the street (with Toyo T1S's on them) because the stock wheels are just so damn light.

drmike · 12-22-2008, 11:10 PM

Quote:

Originally Posted by Namir

Care to explain what that means? I'm guessing it means that the car is just relatively even from Left to Right? I don't really know though, please explain

Ah. OK. Time for school I guess (but not condescendingly so!).

Compare these two sums:

LF+RR
RF+LR

The "cross weight" is computed this way:

CW=(RF+LR)/(LF+RF+LR+RR)

The idea here is that the cross weight should equal 0.5, or 50%. This can be adjusted to be true using the spring perch adjustments on coilover suspensions, or in the case of old solid-axle racers like "modified" dirt track cars and NASCAR stock cars, by adjusting the "wedge", or right rear upper spring perch screw jack. Even if the left side and right side sums are not equal, the cross weight can be made equal. In contrast, the left-to-right weight bias cannot be adjusted with spring perch adjustments but must be adjusted with the movement of ballast across the car.

So, why do we care about the cross weight? Because this affects the bias of the car's performance towards a left or right turn. Oval track cars are biased towards left turns, and therefore run a lot of "wedge", that is, an unbalanced cross weight. For road cars and road race cars, generally it is best to have a balanced cross weight, so that left and right turns are equally good.

So my comment is that the stock 370Z, straight from the factory, has a pretty good cross weight. Immediately we can see (assuming a sample of many Z cars showed similar measurements) that the Z is precisely put together, and that the springs are quality units. The only other way to get a nice cross weight is to use horribly soft springs, and we know that's not true.

Namir · 12-22-2008, 11:14 PM

Quote:

Originally Posted by drmike

Ah. OK. Time for school I guess.

*grabs pencil*

haha, thanks for the explanation! + rep

AK370Z · 12-22-2008, 11:23 PM

Quote:

Originally Posted by drmike

Ah. OK. Time for school I guess (but not condescendingly so!).

Compare these two sums:

LF+RR
RF+LR

The "cross weight" is computed this way:

CW=(RF+LR)/(LF+RF+LR+RR)

The idea here is that the cross weight should equal 0.5, or 50%. This can be adjusted to be true using the spring perch adjustments on coilover suspensions, or in the case of old solid-axle racers like "modified" dirt track cars and NASCAR stock cars, by adjusting the "wedge", or right rear upper spring perch screw jack. Even if the left side and right side sums are not equal, the cross weight can be made equal. In contrast, the left-to-right weight bias cannot be adjusted with spring perch adjustments but must be adjusted with the movement of ballast across the car.

So, why do we care about the cross weight? Because this affects the bias of the car's performance towards a left or right turn. Oval track cars are biased towards left turns, and therefore run a lot of "wedge", that is, an unbalanced cross weight. For road cars and road race cars, generally it is best to have a balanced cross weight, so that left and right turns are equally good.

So my comment is that the stock 370Z, straight from the factory, has a pretty good cross weight. Immediately we can see (assuming a sample of many Z cars showed similar measurements) that the Z is precisely put together, and that the springs are quality units. The only other way to get a nice cross weight is to use horribly soft springs, and we know that's not true.

Wow! Great post!

dyezak · 12-22-2008, 11:35 PM

I'd like to see how the cross weight changes (or doesn't) as fuel is removed. Also, it would be nice to see how driver weight effects the cross weight.

drmike · 12-22-2008, 11:50 PM

Quote:

Originally Posted by dyezak

I'd like to see how the cross weight changes (or doesn't) as fuel is removed. Also, it would be nice to see how driver weight effects the cross weight.

Most definitely, so would I. Someone, quickly, pick up your new 370Z and drive it straight to my house so I can put it on the scales.

18rgcelica73 · 12-23-2008, 12:16 AM

Wow under 3300 pounds and with that cross weight and power. Should prove to be a very fun car at events

shumby · 12-23-2008, 02:16 AM

^^^^ black paint weights lass than blue

will be interesting to get this thing out and through it around man january cannot come soon enough

18rgcelica73 · 12-23-2008, 11:42 AM

Well from what I have learned the peal in the monterey blue actually absorbs light and transfers it to power for the engine to consume less fuel and make gobbs more power.

Namir · 12-23-2008, 12:47 PM

Quote:

Originally Posted by shumby

^^^^ black paint weights lass than blue

will be interesting to get this thing out and through it around man january cannot come soon enough

shumby is just trying to get everyone to buy a black one so that he can get a white one without everyone else having one

I on to you shumbs!

nogoodname · 12-23-2008, 05:39 PM

Black does weight less, all the rain droplets evaporate instantly b/c of the heat the Black paint accumulates, while white cars will just gather the rain droplets

18rgcelica73 · 12-24-2008, 11:57 AM

I would assume this as well for the Monterey blue, except the pearl wont even let the rain touch the car too sexy.

Crash · 12-25-2008, 05:22 AM

Damn it Shumby! LOL

Black weighs 10lbs more per gal.

White however weighs -1Lbs per gal.

AND YOU'RE ALL WRONG!!! The weight is 1499Kg. That's 3304.73 Lbs.

Do the math:
1KG = 2.20462 Lbs
1499 * 2.20462 = ????

That's right! 3304.72931

Any questions?

References: kilograms to pounds - Yahoo! Search Results

18rgcelica73 · 12-26-2008, 02:16 PM

Oh well still lighter and more powerful.

Endgame · 12-26-2008, 03:27 PM

Right!

12-23-2008, 12:16 AM	#22 (permalink)
18rgcelica73 Enthusiast Member Join Date: Dec 2008 Location: Fresno Posts: 330 Drives: 03 ep3 vbp 6speed Rep Power: 17	Wow under 3300 pounds and with that cross weight and power. Should prove to be a very fun car at events __________________ I have a 350rwhp 1973 18rg turbo powered Toyota celica, a 2003 civic si which will be my down payment for a beautiful MONTEREY BLUE 370z. THE370Z.COM F'IN RULES!

12-23-2008, 02:16 AM	#23 (permalink)
shumby Captin Canuck Join Date: Dec 2008 Location: with your mom Age: 44 Posts: 6,288 Drives: your sister Rep Power: 236	^^^^ black paint weights lass than blue will be interesting to get this thing out and through it around man january cannot come soon enough __________________ Originally Posted by SAM@GTM Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living . Sam

12-23-2008, 11:42 AM	#24 (permalink)
18rgcelica73 Enthusiast Member Join Date: Dec 2008 Location: Fresno Posts: 330 Drives: 03 ep3 vbp 6speed Rep Power: 17	Well from what I have learned the peal in the monterey blue actually absorbs light and transfers it to power for the engine to consume less fuel and make gobbs more power. __________________ I have a 350rwhp 1973 18rg turbo powered Toyota celica, a 2003 civic si which will be my down payment for a beautiful MONTEREY BLUE 370z. THE370Z.COM F'IN RULES!

12-24-2008, 11:57 AM	#27 (permalink)
18rgcelica73 Enthusiast Member Join Date: Dec 2008 Location: Fresno Posts: 330 Drives: 03 ep3 vbp 6speed Rep Power: 17	I would assume this as well for the Monterey blue, except the pearl wont even let the rain touch the car too sexy. __________________ I have a 350rwhp 1973 18rg turbo powered Toyota celica, a 2003 civic si which will be my down payment for a beautiful MONTEREY BLUE 370z. THE370Z.COM F'IN RULES!

12-25-2008, 05:22 AM	#28 (permalink)
Crash A True Z Fanatic Join Date: Dec 2008 Location: Los Angeles Posts: 1,853 Drives: 02 Corvette Z06 Rep Power: 590	Damn it Shumby! LOL Black weighs 10lbs more per gal. White however weighs -1Lbs per gal. AND YOU'RE ALL WRONG!!! The weight is 1499Kg. That's 3304.73 Lbs. Do the math: 1KG = 2.20462 Lbs 1499 * 2.20462 = ???? That's right! 3304.72931 Any questions? References: kilograms to pounds - Yahoo! Search Results __________________ 2002 Corvette Z06 - Totaled 2003 Corvette Z06 50th Anniversary

12-22-2008, 11:35 PM	#20 (permalink)
dyezak Base Member Join Date: Dec 2008 Location: TX Posts: 26 Drives: Crossfire Rep Power: 16	I'd like to see how the cross weight changes (or doesn't) as fuel is removed. Also, it would be nice to see how driver weight effects the cross weight.

12-23-2008, 05:39 PM	#26 (permalink)
nogoodname Lifetime Premium Join Date: Nov 2008 Location: Montreal Posts: 22,357 Drives: E46 M3 Rep Power: 1765	Black does weight less, all the rain droplets evaporate instantly b/c of the heat the Black paint accumulates, while white cars will just gather the rain droplets

12-26-2008, 02:16 PM	#29 (permalink)
18rgcelica73 Enthusiast Member Join Date: Dec 2008 Location: Fresno Posts: 330 Drives: 03 ep3 vbp 6speed Rep Power: 17	Oh well still lighter and more powerful. __________________ I have a 350rwhp 1973 18rg turbo powered Toyota celica, a 2003 civic si which will be my down payment for a beautiful MONTEREY BLUE 370z. THE370Z.COM F'IN RULES!

12-26-2008, 03:27 PM	#30 (permalink)
Endgame A True Z Fanatic Join Date: Nov 2008 Location: Phoenix Posts: 1,613 Drives: Nothing Now! Rep Power: 224	Right!

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