Car alone is about 3250 for me.

To lose weight try these

The glass top is lighter.
The non power sport seats are ligther
Titanium Z06 exhaust is lighter
Get lighter wheels like CCW
Non runflat tires are lighter
Empty all the cds from the car

 

I have a 275 rear so3 pole position siting on a scale in a picture if you would like to see it, 33 pounds. I will e-mail it to anyone interested...as far as the supercar tires, I have never weighed one but I can't see how it could ring in less than that unless of couse it was weighed after 2 years use by a stroked car....
But then, I can be wrong. There appears to be no dispute over the weight of the run-flats but I would need to see the scale with a 295 tire b4 I will beleive it....and I don't care what post says what. If I am wrong, next round is on me guys....and I will buy the 295's

 

[QUOTE]
Any chance your Pole Positions are just heavier than most aftermarket tires? I find it hard to believe that the weight of the car can be supported by a sidewall by adding so little mass (to the runflats).....

absolutely a chance that could be.....I never weighed any others.

 

What about the seats, they are heavy. I have the passenger seat out and looking for a race seat I like. Also a Z06 windsheild is a lot lighter. I don't have one yet.
I also took out the 110 lb weights out of the back. The car weighs about 3150 lb now with the Roll bar. :D


[Modified by Tom Hall, 5:27 AM 4/11/2003]

 

Nitto NT555 extremes- 25 lb in front, 30 rear. Stock EMTs: 30 front, 35 rear. Total weight savings: 20 lbs.

 

What does the passenger sport seat weigh?

I'm looking for weight that will not impact looks.

ZO6 windshield is probably quite a bit of money for the claimed "6 pounds"

110lb weights out of the back???

 

Actually, the sports seats are heavier than the base seats. That's why the Z06 comes with the base seats instead of sport seats.

 

These seem like the logical "best bang for the buck" choices. The driveshaft, flywheel, and eradispeeds are rotating mass, so it's even better- less weight AND lower rotating mass.

I saw the new 350Z uses a carbon-fiber driveshaft- who makes one for the Corvette? When I need a new clutch, I was thinking about doing the flywheel and driveshaft too....

 

actually thats substantial. equal to 100+ of dead weight. or 1/10 sec in the 1/4 mile.

 

What did you remove? :eek:

Btw, you can also remove the cats, air pump, and front sway bar. :cheers:

Anyone know how large the front bumper support(foam piece) is for these cars? Does it look like it weighs much.

Btw, IIRC my C5 weighed in at 3340 with me in it. So minus me it should be around 3180.

 

Both good ideas, as well as removing the rear speakers. Going to non pop-up headlights will help, but is expensive, of course. Also expensive, brake rotors with aluminum hats and aluminum-bodied calipers.

 

For every 8.5 # of weight you shed, you effectively gain one HP.

I just installed a Kirky SCCA cage. It weighed 134#, so I'm already 16 hp behind all you guys.

It's a good idea to consider reductions in rotating weight. Some ideas are: lightweight flywheel, rotors with aluminum hats, I recently checked out a set of 17x11" 3 pc rims that weighed in at 17# (for info contact roadracer Cindi Lux @ naykidracing.com). Also consider lightweight performance mods that will give you more bang for your buck like tubular headers or a lightweight racing seat. A lexan rear glass for the coupe will shed some pounds, although it will be shortlived due to scratching. The ZO6 windshield can be put in when your old windshield gets a crack. If the car is for racing then buy a set of wrecking yard doorskins and gut them for use at track days. You would be amazed at how much the door glass, regulators and the rest of the guts weigh. I would be cautious at considering a tire on weight alone as it's handling has suck a profound effect on braking and cornering traction (unless they're bias ply racing slicks). sj

 

Okay so a buddy of mine got me thinking that the covers to the rear compartments are about 8-10 lbs. Now that does not seem like a lot but I figured I would give it a test and take the junk out the trunk.

Got my scale and took an empty bucket weighing about 2 lbs.

Emptied all three compartments and their covers
Empited the stuff from the cargo net
Removed cargo net and shade
Removed rear light cover panels (on hand bolt each that holds the cargo net)
Remvoed center rear carpet backing
Removed the two ***** that hold the top
Removed 12 Disc CD changer (6 7 mm bolts)
Removed everything from the center console
Removed every thing from the floor (even loose change)
Removed floor mats
Removed glove compartment contents

I have this all sitting on a scale and could not beleive my eyes.

The scale with the bucket is at 46 lbs.

That means I have removed 44 lbs from the car. I know I carry a lot of stuff but I did not think it added up to that. When I take off the mud flaps that should get me to 45 lbs

Heaviest thing is that CD changer which is about 15 lbs with the 12 CD's in it.

Now it may not seem like a lot but we spend thousands to accelerate tenths of a second.

I have tested by adding ballast to my car when I did not have a rollbar and 100 lbs netted me .11 in the quarter.

Now it ain't much but you all know the frustration of taking off .0495 to get you to that next personal best and here it is all along with only about 5 mintues worth of work.....for FREE

Also swapped exhaust from Corsa Inday Pace to Z06 Ti and each muffler is 11 lbs vs. 24 lbs to drop another 26 lbs.

 

Here is the list I made back in 2001 when I bought my C5.

Reducing the weight of the C5 body:
The basics:

1. Remove all loose change, CD's, golf clubs, misc. items, from center console, hatch area, and glove box
2. Quit eating cheeseburgers, hit the gym, and go on a diet
3. Burn excess fuel from gas tank (gas weighs almost 7lbs/gal)
3. Empty fluid from windshield wiper reservoir;
4. Remove cargo net
5. Remove tire repair kit (Z06)
6. Remove extra targa top (coupes)
7. Remove fuel rail covers
8. Remove floor mats
9. Remove C5 "appearance mods" - exhaust plates, door sill covers, etc.
10. Empty your pockets of extra change, PDA's, cell phones, keys, lead plates, or whatever other junk you lug arround

Ditch unnecessary factory options

1. Remove A/C Compressor
2. Remove factory radio, speakers, and/or CD changer, and unnecessary wiring
3. Remove fog lights
4. Remove A/C controls and ducting
5. Remove HUD projector
6. Remove winshield wiper fluid reservoir and pump
7. Remove windshield wipers and motors
8. Remove power locks and power windows

Remove unnecessary factory options Stage II

1. Remove AIR pump system
2. Remove stock cat back
3. Remove power steering pump
4. Remove front sway bar
5. Remove passenger air bag

Stage III OEM Removal

1. Remove interior - seats, carpets, speaker panels, head liner, dash, center console, glove box, door panels, sun visors, rear view mirror
2. Remove fender wells
3. Remove/shave side mirrors
4. Remove torque tunnel cover
5. Remove seat belts
6. Remove parking brake

Buy aftermarket replacements

1. Replace stock exhaust manifolds with headers
2. Replace cats with offroad x-pipe
3. Replace cat back with titanium cat back
4. Replace stock air box with aftermarket box/filters (weight decrease/increase depending on product choosen)
5. Replace stock crank pulley with aftermarket underdrive pulley
6. Replace stock targa top with lexan piece (coupes)

Aftermarket Stage II

1. Replace water pump with electric water pump
2. Replace battery with smaller battery
3. Replace popup headlights with non-popup headlights
4. Replace stock seats with aftermarket seats
5. Replace steel sway bars with aluminum sway bars.
6. Replace stock windshield with 2002 Z06 windshield (2lbs. buddy!)

Aftermarket Stage III

1. Replace steering wheel with aftermarket non airbag wheel
2. Replace steering knuckle with aftermarket aluminum version
3. Replace stock glass with lexan glass
4. Strip entire car, acid wash chassis, put car back together.
5. Replace stock hood, doors, and hatch with aftermarket carbon fiber pieces
6. Replace leaf springs with coil over shocks
7. Replace wiring harness with aftermarket wiriing harness

And here is the list for reducing unsprung weight:

1. Replace stock tires with non-runflat tires
2. Replace stock wheels with forged wheels
3. Replace stock rotors with forged aluminum rotors
4. Replace stock flywheel with aluminum flywheel
5. Remove tire pressure sensors
6. Replace prop shaft in torque tunnel with carbon fiber shaft

 

That my friend is a pretty all inclusive list;)

 

You didn't happen to weigh those items? ;)

 

:iagree: Wow... :smash: