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Old 12-21-2012, 11:24 PM   #18
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Quote:
Originally Posted by BaylorCamaro View Post
Thanks for the input guys. Will update tomorrow when I'm home. Problem with going smaller is clearing the brembos, and I might be upgrading to 6 piston fronts. We'll see.

Keep the info coming!

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Hey jw since we are talking about weight here, do you know how much weight was gained when you did the brembo upgrade? I assume the brembos weigh more? and so do the rotors?
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Old 12-21-2012, 11:49 PM   #19
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weighted some things

stock spare tire-40lbs
stock jack&lug nut wrench-8lbs
stock battery-45lbs
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Old 12-22-2012, 12:16 AM   #20
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Not a v6 owner but, concentrating on unsprrung weight and rotating mass reductions. For every one pound is worth 10 on other parts of the car.
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Old 12-22-2012, 01:00 AM   #21
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Not a v6 owner but, concentrating on unsprrung weight and rotating mass reductions. For every one pound is worth 10 on other parts of the car.
That's what I was thinking, just by going with 18" Forgestar F14's or TSW Nurburgring that would be 14.4 pounds per wheel, so 57.6 pounds total. That would be like shaving 576 pounds off!?!?!

What would that feel like, HP-wise?

You'd get a little more with a shorter tire vs. the stock tires too.
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Old 12-22-2012, 02:27 AM   #22
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Quote:
Originally Posted by kjkjr27 View Post
Hey jw since we are talking about weight here, do you know how much weight was gained when you did the brembo upgrade? I assume the brembos weigh more? and so do the rotors?
I have the weight of the brakes for the SS on the list. However I do not know the weight for the V6 brakes :(





Quote:
Originally Posted by camaro2lt View Post
weighted some things

stock spare tire-40lbs
stock jack&lug nut wrench-8lbs
stock battery-45lbs

Thanks! Will update tomorrow.




Quote:
Originally Posted by ChadG View Post
That's what I was thinking, just by going with 18" Forgestar F14's or TSW Nurburgring that would be 14.4 pounds per wheel, so 57.6 pounds total. That would be like shaving 576 pounds off!?!?!

What would that feel like, HP-wise?

You'd get a little more with a shorter tire vs. the stock tires too.
I've lost a lil over 40 lbs in my wheel / tire set up. It wasn't a huge gain in performance, however acceleration and responsiveness definitely increased.

Sent from my SAMSUNG Galaxy S III using telekinesis.
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Old 12-22-2012, 07:30 AM   #23
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Here is a build that did many weight reduction things. Read thru his build for more ideas.

http://www.camaro5.com/forums/showth...doc+blue+angel

Then check out this thread, he got his 5th gen down to 3475 lbs with roll cage. Look at post # 40 & 42.

Good Luck, keep us updated on what you do for your weight reduction.
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Old 12-22-2012, 10:10 AM   #24
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A diet is the cheapest most effective way to run lower ET's in the 1/4 mile. every 100# is a tenth on average and the battery swap to a braile or other lightwieght unit is app 40# savings alone.

Good thread!
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Old 12-22-2012, 10:39 AM   #25
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If price is not an option. Get rid of those doors and go fiberglass, plexiglass windows. Just saying
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Old 12-22-2012, 11:11 AM   #26
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Originally Posted by BaylorCamaro View Post
I have the weight of the brakes for the SS on the list. However I do not know the weight for the V6 brakes :(

.
Hopefully someone can chime in with the weights for the v6
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Old 12-24-2012, 12:59 PM   #27
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Saw this in the wheels and tires section and thought it was very interesting. It basically confirms what we all knew about how wheel/tire weights affect power to the ground. Its cool that the test was on an SS, and likely has a similar, or maybe even bigger affect for our V6:

*********************************************

Article with dyno graph came from http://teamspeed.com/forums/aventado...orsepower.html

Test:
Davenport Motorsports (Custom Performance Parts and Service : Davenport Motorsports) of Canada, wanted to see the dyno effects of running different wheels on cars. They took a factory 2012 Camaro SS and ran 3 dyno runs. They ran the first run with a set of aftermarket wheels, the 2nd run with a set of stock factory wheels and the 3rd run with a set of HRE P45S wheels, all in 20” sizes.

These results highlight the effects of rotational inertia on drive-train losses (the hp lost between the engine crank and the ground). Wheels and tires contribute to drive-train losses as energy is used to spin up the wheels (and decelerate the wheels under braking). From the dyno chart you can see the effect of replacing factory wheels with lighter HRE wheels and see the negative effects of installing heavier aftermarket wheels.

Results:
1. (Blue curve) Factory wheels: 20”x9.0” with Pirelli 275/40-20 tires weighing 68 lbs combined per rear wheel. – Max hp: 371 hp, Max Torque: 375 ftlbs - (Baseline)
2. (Red curve) Aftermarket wheels: 20”x9.0” with Pirelli 275/40-20 tires weighing 72 lbs combined per rear wheel – Max hp: 369 hp, Max Torque: 373 ftlbs - (A [-] loss of 2 hp and 2 ftlbs)
3. (Green curve) HRE wheels: 20”x11.0” with Nitto 315/35-20 tires weighing 60 lbs combined per rear wheel – Max hp: 380hp, Max Torque: 384 ftlbs - (A [+] gain of 8 hp and 9 ftlbs and that is running a 2” wider wheel/tire combo)

Conclusion:
The engine obviously still cranks out the same amount of hp and torque, the lighter HREs simply waste less of it before it gets to the ground. Also interesting to note is that the gains are not just peak gains, but gains across the entire rev range. If they had done a braking test, we would have seen similar results as the rotational inertia effects also have a significant effect on how much energy is used to stop the wheel/tire combo vs. stopping the car. We talk about these effects all the time and focus on designing lightweight wheels with low rotational inertia, but it isn’t every day that you get to see real hard data showing the true effects.
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Old 12-24-2012, 01:39 PM   #28
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Yeah this is precisely the reason I'm drooling over the Forgestar F14 and TSW Nurburgrings in 18"!
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Old 12-24-2012, 11:22 PM   #29
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my Motegi Racing wheels are 18x8, so half inch widder than stock heritage wheels and wheigh 22 lbs. so just for the wheels i saved 43.6 lbs. and my Flowmaster 40 series weight is 10 lbs a piece. so total saving of 28 lbs from the factory saddle bags back there lol

both weights were from Amazon. They give product weight for both items.

anyone know what the stock intake wheighs and if aftermarket ones are any less?
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Old 12-25-2012, 12:48 AM   #30
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Quote:
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I've been looking into the TSW Nurburgrings and the Forgestar F14s to replace my steel heritage wheels, but if you're doing autocross I would imagine your best bet is to do with wheels smaller than 20".

Even Pedders went with 19's on their build:

http://www.camaro5.com/forums/showthread.php?t=90270

Anyone have solid numbers on how much the 18" Steel Heritage Wheels on the LS weigh? 18" TSW's and Forgestars are about 18.5 lbs . . . which is crazy light.
Heritage Wheels are a hair over 30Lbs, I purchased 18" Aluminum Rims from Pep Boys that weight just under 20Lbs.
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Old 12-25-2012, 03:33 PM   #31
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Originally Posted by '11CamaroLS View Post
my Motegi Racing wheels are 18x8, so half inch widder than stock heritage wheels and wheigh 22 lbs. so just for the wheels i saved 43.6 lbs. and my Flowmaster 40 series weight is 10 lbs a piece. so total saving of 28 lbs from the factory saddle bags back there lol

both weights were from Amazon. They give product weight for both items.

anyone know what the stock intake wheighs and if aftermarket ones are any less?
Not sure, I was wondering this too. I would think the stock intake would be kinda heavy since it is big and bulky, but you never know.
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Old 12-25-2012, 11:10 PM   #32
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Heritage Wheels are a hair over 30Lbs, I purchased 18" Aluminum Rims from Pep Boys that weight just under 20Lbs.
Can you feel the difference after going to the lighter wheels?
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Old 12-25-2012, 11:19 PM   #33
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Quote:
Originally Posted by BaylorCamaro View Post

RS OEM Wheel Weight (per wheel)
Front - 30.3 lbs
Rear - 32 lbs


RS OEM Tire Weight (per tire)
Front - 32 lbs
Rear - 36 lbs
Are you sure that's right? How can the tires weigh more than the wheels?
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Old 12-26-2012, 06:34 AM   #34
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Can you feel the difference after going to the lighter wheels?

Yes, I can feel the differance after going from my stock 19's to my Nurburgrung 20's. This was a 5 lb. drop in each corner and it feels lighter on acceleration and handling is better. Even a bigger savings if going from a stock 20" or dropping to 18"Nurburgring's.



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Are you sure that's right? How can the tires weigh more than the wheels?
Yes, those are correct weights. The WIKI lists the wheel and tires weights for us.
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