Wieght reduction on a C6
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Heel & Toe
Joined: Jan 2004
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From: Naperville IL
Wieght reduction on a C6
Any lists going yet on what stuff can be yanked off the C6 (within reason) to shed 200-300 lbs? I read in Road & Track that they added lots of sound deading junk in the C6 to try and get it to luxury car noise decibel levels. 
Night Race Blue 427
Joined: Feb 1999
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From: Muncie, Indiana ...... Can I buy an amplifier on time ... I ani't got no money now but I'll pay you before I die
Originally Posted by F1freak
Any lists going yet on what stuff can be yanked off the C6 (within reason) to shed 200-300 lbs? I read in Road & Track that they added lots of sound deading junk in the C6 to try and get it to luxury car noise decibel levels.
Thread Starter
Heel & Toe
Joined: Jan 2004
Posts: 15
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From: Naperville IL
September 2004 Road & Track,pg.75: " In developing the sixth-generation Corvette, a 7 percent increase in the weight was allowed for acoustic packaging that includes a full length blanket on the backbone tunnel". Gotta be a lot more than 7 pounds you can reasonably shave off a C6.
Last edited by F1freak; Feb 19, 2005 at 10:18 PM.
Burning Brakes
Joined: Jan 2005
Posts: 774
Likes: 1
From: Seguin Texas
One area might be to go to lightweight forged alloy wheels and non-run flat tires to save considerable weight and most importantly "unsprung" weight .
I would also like to konw, for my own education, how much lighter is the Corsa cat back system than the original?
Comments on both
I would also like to konw, for my own education, how much lighter is the Corsa cat back system than the original?
Comments on both
Safety Car
Joined: Nov 2003
Posts: 4,979
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From: San Diego, CA "leaf" "tee" "e"
Aftermarket wheels and exhausts are almost all heavier than stock. You can drop weight will full length headers however. For an idea of how much weight can be lost, and where it can be lost, check this out:
http://forums.corvetteforum.com/showthread.php?t=984927
Not much C6 information yet, but the principles for weight loss still apply.
http://forums.corvetteforum.com/showthread.php?t=984927
Not much C6 information yet, but the principles for weight loss still apply.
Drifting
Joined: Mar 2003
Posts: 1,569
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From: Carolina
Originally Posted by Check 6
One area might be to go to lightweight forged alloy wheels and non-run flat tires to save considerable weight and most importantly "unsprung" weight .
I would also like to konw, for my own education, how much lighter is the Corsa cat back system than the original?
Comments on both
I would also like to konw, for my own education, how much lighter is the Corsa cat back system than the original?
Comments on both
Magnesium wheels would save a few pounds i remember that it was an option in the C5....
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Safety Car
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From: San Diego, CA "leaf" "tee" "e"
Originally Posted by ivan111
Magnesium wheels would save a few pounds i remember that it was an option in the C5....
Race Director
Joined: Oct 2004
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From: Virginia Bch VA
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Originally Posted by Check 6
...lightweight forged alloy wheels and non-run flat tires ..."unsprung" weight .
I would also like to konw, for my own education, how much lighter is the Corsa cat back system than the original?
I would also like to konw, for my own education, how much lighter is the Corsa cat back system than the original?
Don’t know the exact #s but on the tires alone I’d bet 5-7lbs per tire. Magna Flow Cat Backs save 15 lbs over stock. Corsa is heavier than stock.
Racer
Joined: Oct 2004
Posts: 366
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From: Sunnyvale CA
Don't mean to be a thread hijacker...but the thing that I'm thinking about is not so much shedding a lot of weight but moving some around. Those little storage bins in the back look like a great spot to put a sealed battery and solve three problems at once...the weight distribution improves (handling improves); the weight goes down, and the potential for acid getting on underhood components goes away...
Drifting
Joined: Feb 2005
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if you get ultra light wheels, saving 7-8lbs per wheel then you might be able to save a lot, since the wheel is considered rotating weight, it accounts for more than 100% of the reduction..i dont know the exact formula, but i know the 40lb you drop in wheels can equal more than 100lbs of stationary weight..
Drifting
Joined: Nov 2004
Posts: 1,695
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From: NY
Originally Posted by F1freak
Any lists going yet on what stuff can be yanked off the C6 (within reason) to shed 200-300 lbs? I read in Road & Track that they added lots of sound deading junk in the C6 to try and get it to luxury car noise decibel levels.
My RG18 wheels weigh in at 18lbs each.. that is a 7lb drop from the fronts and 8lb drop from the rears. That is a 30LB drop from stock in Wheels ALONE. Then switching from the Runflats to Toyo T1S tires will save you another 7lbs per corner for a total Unsprung weight savings of 58lbs. Using the formula of 4:1 Unsprung:Sprung, that alone will save you in essence 230+ lbs of sprung weight. Its not an exact science but its close. Then if you wanted to go even further, I also have Stoptech or Brembo BBK's which weigh in about 30lbs lighter then the OEM setup total. Again if you want to use the 4:1 ratio thats another 120lb loss. You stand to lose about 350lbs of equivalent sprung weight by starting at the 4 corners..
Contact me for more information and for pricing if you are interested in any of these as i carry them all. Especially the wheels (best starting point).
Safety Car
Joined: Nov 2003
Posts: 4,979
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From: San Diego, CA "leaf" "tee" "e"
You can also get 5.5 lb wheels that have Ti hubs and carbon fiber shells. Expensive, but what's a little money when it comes to modding?? lol Read more here:
http://forums.corvetteforum.com/show....php?t=1024288
Daemon,
I don't see how you can save 30 lbs with a brake kit. The calipers only weigh ~16 lbs without pads. The rotors are ~86 for a full set of C6 Z51 rotors, and ~66 lbs for C5 rotors. I'm sure you use 2-piece rotors with an aluminum hat, but damn near every race rotor I've seen is heavier than stock, not lighter...and then you add the weight of the hat. Also, let's not forget that even if the rotors end up weighing the same, the 2-piece rotors will carry more weight on the outside, which will make it worse because it'll create a higher (polar) moment because the rotational weight is further from the center. For comparison, completely titanium rotors weigh ~20 lbs. The rest of your data looks okay, but I had to call you out on the brake weight information. If you weigh the stock and Stop Tech/Brembo components yourself, and post the results, I'll back off, until then, I still have lots of weights and measurements here:
http://forums.corvetteforum.com/showthread.php?t=984927
For my next update of that thread, I'll post weights for the rotor candidates I mentioned above, for the C5 and C6, plus whatever information you may provide.
http://forums.corvetteforum.com/show....php?t=1024288
Daemon,
I don't see how you can save 30 lbs with a brake kit. The calipers only weigh ~16 lbs without pads. The rotors are ~86 for a full set of C6 Z51 rotors, and ~66 lbs for C5 rotors. I'm sure you use 2-piece rotors with an aluminum hat, but damn near every race rotor I've seen is heavier than stock, not lighter...and then you add the weight of the hat. Also, let's not forget that even if the rotors end up weighing the same, the 2-piece rotors will carry more weight on the outside, which will make it worse because it'll create a higher (polar) moment because the rotational weight is further from the center. For comparison, completely titanium rotors weigh ~20 lbs. The rest of your data looks okay, but I had to call you out on the brake weight information. If you weigh the stock and Stop Tech/Brembo components yourself, and post the results, I'll back off, until then, I still have lots of weights and measurements here:
http://forums.corvetteforum.com/showthread.php?t=984927
For my next update of that thread, I'll post weights for the rotor candidates I mentioned above, for the C5 and C6, plus whatever information you may provide.
Drifting
Joined: Nov 2004
Posts: 1,695
Likes: 0
From: NY
Originally Posted by leaftye
You can also get 5.5 lb wheels that have Ti hubs and carbon fiber shells. Expensive, but what's a little money when it comes to modding?? lol Read more here:
http://forums.corvetteforum.com/show....php?t=1024288
Daemon,
I don't see how you can save 30 lbs with a brake kit. The calipers only weigh ~16 lbs without pads. The rotors are ~86 for a full set of C6 Z51 rotors, and ~66 lbs for C5 rotors. I'm sure you use 2-piece rotors with an aluminum hat, but damn near every race rotor I've seen is heavier than stock, not lighter...and then you add the weight of the hat. Also, let's not forget that even if the rotors end up weighing the same, the 2-piece rotors will carry more weight on the outside, which will make it worse because it'll create a higher (polar) moment because the rotational weight is further from the center. For comparison, completely titanium rotors weigh ~20 lbs. The rest of your data looks okay, but I had to call you out on the brake weight information. If you weigh the stock and Stop Tech/Brembo components yourself, and post the results, I'll back off, until then, I still have lots of weights and measurements here:
http://forums.corvetteforum.com/showthread.php?t=984927
For my next update of that thread, I'll post weights for the rotor candidates I mentioned above, for the C5 and C6, plus whatever information you may provide.
http://forums.corvetteforum.com/show....php?t=1024288
Daemon,
I don't see how you can save 30 lbs with a brake kit. The calipers only weigh ~16 lbs without pads. The rotors are ~86 for a full set of C6 Z51 rotors, and ~66 lbs for C5 rotors. I'm sure you use 2-piece rotors with an aluminum hat, but damn near every race rotor I've seen is heavier than stock, not lighter...and then you add the weight of the hat. Also, let's not forget that even if the rotors end up weighing the same, the 2-piece rotors will carry more weight on the outside, which will make it worse because it'll create a higher (polar) moment because the rotational weight is further from the center. For comparison, completely titanium rotors weigh ~20 lbs. The rest of your data looks okay, but I had to call you out on the brake weight information. If you weigh the stock and Stop Tech/Brembo components yourself, and post the results, I'll back off, until then, I still have lots of weights and measurements here:
http://forums.corvetteforum.com/showthread.php?t=984927
For my next update of that thread, I'll post weights for the rotor candidates I mentioned above, for the C5 and C6, plus whatever information you may provide.