Weight saving!
3rd Gear
Joined: Oct 2016
Posts: 3
Likes: 1
Weight savings! I found some weights http://www.azmythrecording.com/studios/studio-a for the CCB disc's vs steel brakes. This is from a C6 but should be fairly close.
All 4 CCB disc's are -28 pounds lighter but http://azmythmusictech.com/curriculum.html +10.80 to the number for -17.2. vs steel
To compare the Michelin PSS non runflats in 325/275 weight 24 pounds less than the stock MPSS ZP's. Then with ZR1/C7 grand sport wheels. You save another 10 pounds so 34 pounds off the top.
The -34 pounds can be felt as the car drives seemly lighter feel.
Then my recent headers also reduced weight! Not sure yet how much need to weight the stock stuff that came off.
All 4 CCB disc's are -28 pounds lighter but http://azmythmusictech.com/curriculum.html +10.80 to the number for -17.2. vs steel
To compare the Michelin PSS non runflats in 325/275 weight 24 pounds less than the stock MPSS ZP's. Then with ZR1/C7 grand sport wheels. You save another 10 pounds so 34 pounds off the top.
The -34 pounds can be felt as the car drives seemly lighter feel.
Then my recent headers also reduced weight! Not sure yet how much need to weight the stock stuff that came off.
Last edited by Radkins2; Oct 20, 2016 at 03:32 PM.
Safety Car
Joined: Apr 2010
Posts: 4,231
Likes: 451
From: Maryland
Double check
So 1 KG reduction of rotational mass (unsprung) is worth up to 15 KG of weight reduction in "sprung" mass (dead weight). WOW!
Than 34 lbs. reduction of rotating weight multiply by just a factor of 10 (15= 510 lbs.) would come out to a reduction of 340 lbs. of car weight when considering acceleration/performance!!
The reason I used 10 is that's the multiplier that I have seen used most of the time between sprung and unsprung (rotating) weight.
GET-YA SOME OF THAT!! IT SHOULD HELP!
Damn, and with my new tire & wheel change I just added 8 lbs. to my unsprung OEM weight (10X8= 80 lbs.)
Last edited by C7/Z06 Man; Oct 19, 2016 at 09:15 PM.
Track Rat
Joined: Oct 2006
Posts: 6,466
Likes: 3,464
Here are the exact front weights from the research Jeff @ Essex did. It's in this post:
https://www.corvetteforum.com/forums...post1590745949
*All numbers below are per side*
OEM front Caliper= 10.4 lbs
OEM front CCM Disc=13.4 lbs.
OEM front pads= 6.2lbs
Total OEM CCM front corner brake weight= 30.0 lbs.
AP Racing CP9668 + bracket = 7.9 lbs.
AP Racing CP6084 372x34, 84v disc/hat= 21.1 lbs.
FRP3014 Pad set for CP9668= 6.35 lbs.
Total AP Racing CP9668 front corner brake weight= 35.35 lbs.
OEM front caliper= 10.4 lbs.
OEM front iron disc/hat= 23.8 lbs.
OEM front pads: 6.2lbs
Total OEM Iron front corner brake weight= 40.4 lbs.
OEM rear caliper= 7.0 lbs.
CP9449 Pro5000R Radi-CAL= 4.9 lbs.
Difference= 2.1 lbs.
When you factor in about a pound for our caliper bracket, that will knock the caliper difference down to about 1 pound.
OEM rear iron disc= 25.9 lbs.
CP8972 J Hook Disc= 15.2 lbs.
Difference= 10.7 lbs.
https://www.corvetteforum.com/forums...post1590745949
*All numbers below are per side*
OEM front Caliper= 10.4 lbs
OEM front CCM Disc=13.4 lbs.
OEM front pads= 6.2lbs
Total OEM CCM front corner brake weight= 30.0 lbs.
AP Racing CP9668 + bracket = 7.9 lbs.
AP Racing CP6084 372x34, 84v disc/hat= 21.1 lbs.
FRP3014 Pad set for CP9668= 6.35 lbs.
Total AP Racing CP9668 front corner brake weight= 35.35 lbs.
OEM front caliper= 10.4 lbs.
OEM front iron disc/hat= 23.8 lbs.
OEM front pads: 6.2lbs
Total OEM Iron front corner brake weight= 40.4 lbs.
OEM rear caliper= 7.0 lbs.
CP9449 Pro5000R Radi-CAL= 4.9 lbs.
Difference= 2.1 lbs.
When you factor in about a pound for our caliper bracket, that will knock the caliper difference down to about 1 pound.
OEM rear iron disc= 25.9 lbs.
CP8972 J Hook Disc= 15.2 lbs.
Difference= 10.7 lbs.
Last edited by Poor-sha; Oct 21, 2016 at 08:58 AM. Reason: Updated with rear brake weights as well
Melting Slicks
Joined: Feb 2009
Posts: 2,797
Likes: 608
From: Dallas Georgia
2020 Corvette of the Year Finalist (track prepared)
C3 of Year Winner (track prepared) 2019
Not trying to derail the thread but supposedly the Girodisc CCB iron replacements are only 23 pounds as well. There was lots of chatter about adding all that unsprung weight penalty but apparently it is the same as a stock iron rotor car.
That actually makes me feel better....
That actually makes me feel better....
Safety Car
Joined: Apr 2010
Posts: 4,231
Likes: 451
From: Maryland
My Experience Increasing Performance By Lowering Rotating Weight
Same day & from one 1/4 mile run to the very next results!
2010 GS:
*First 1/4 mile pass with stock rims and runflats= X 60' time @ 123 mph.
*Second pass on "borrowed" lighter rear C5 Z06 rims & lighter drag radials= same exact 60' time (NO BS) @ 125 mph and over a tenth quicker ET.
Neither tires spun, the stock converter does not let you come out of the hole very high approx. 1200 rpm's, so the car is not really making much power off the line.
Check Out Farmer's "stock" time at MIR & then with non-stock tires/wheels on the C7 Z06 "fast last".
Stock======= 10.41 @134 mph
Tires & Wheels= 10.21 @137 mph
2010 GS:
*First 1/4 mile pass with stock rims and runflats= X 60' time @ 123 mph.
*Second pass on "borrowed" lighter rear C5 Z06 rims & lighter drag radials= same exact 60' time (NO BS) @ 125 mph and over a tenth quicker ET.
Neither tires spun, the stock converter does not let you come out of the hole very high approx. 1200 rpm's, so the car is not really making much power off the line.
Check Out Farmer's "stock" time at MIR & then with non-stock tires/wheels on the C7 Z06 "fast last".
Stock======= 10.41 @134 mph
Tires & Wheels= 10.21 @137 mph
Last edited by C7/Z06 Man; Oct 19, 2016 at 09:05 PM.
Drifting
Joined: Mar 2012
Posts: 1,273
Likes: 49
Here are the exact front weights from the research Jeff @ Essex did. It's in this post:
https://www.corvetteforum.com/forums...post1590745949
*All numbers below are per side*
OEM front Caliper= 10.4 lbs
OEM front CCM Disc=13.4 lbs.
OEM front pads= 6.2lbs
Total OEM CCM front corner brake weight= 30.0 lbs.
AP Racing CP9668 + bracket = 7.9 lbs.
AP Racing CP6084 372x34, 84v disc/hat= 21.1 lbs.
FRP3014 Pad set for CP9668= 6.35 lbs.
Total AP Racing CP9668 front corner brake weight= 35.35 lbs.
OEM front caliper= 10.4 lbs.
OEM front iron disc/hat= 23.8 lbs.
OEM front pads: 6.2lbs
Total OEM Iron front corner brake weight= 40.4 lbs.
OEM rear caliper= 7.0 lbs.
CP9449 Pro5000R Radi-CAL= 4.9 lbs.
Difference= 2.1 lbs.
When you factor in about a pound for our caliper bracket, that will knock the caliper difference down to about 1 pound.
OEM rear iron disc= 25.9 lbs.
CP8972 J Hook Disc= 15.2 lbs.
Difference= 10.7 lbs.
https://www.corvetteforum.com/forums...post1590745949
*All numbers below are per side*
OEM front Caliper= 10.4 lbs
OEM front CCM Disc=13.4 lbs.
OEM front pads= 6.2lbs
Total OEM CCM front corner brake weight= 30.0 lbs.
AP Racing CP9668 + bracket = 7.9 lbs.
AP Racing CP6084 372x34, 84v disc/hat= 21.1 lbs.
FRP3014 Pad set for CP9668= 6.35 lbs.
Total AP Racing CP9668 front corner brake weight= 35.35 lbs.
OEM front caliper= 10.4 lbs.
OEM front iron disc/hat= 23.8 lbs.
OEM front pads: 6.2lbs
Total OEM Iron front corner brake weight= 40.4 lbs.
OEM rear caliper= 7.0 lbs.
CP9449 Pro5000R Radi-CAL= 4.9 lbs.
Difference= 2.1 lbs.
When you factor in about a pound for our caliper bracket, that will knock the caliper difference down to about 1 pound.
OEM rear iron disc= 25.9 lbs.
CP8972 J Hook Disc= 15.2 lbs.
Difference= 10.7 lbs.
This was was later modified when I brought my car to them. I believe the final difference was only 1.5 lbs per corner in the front. That was the comparison between the 9668 kit and the CCM package.
Bottom line is this car is very heavy so getting any weight off the car in the proper fashion will benefit. We are now over 300 lbs off the car. And it's still 31xx lol.
Last edited by Toilets; Oct 21, 2016 at 09:47 AM.
Leeds.io
Joined: Sep 2003
Posts: 4,604
Likes: 409
From: White Mountains
St. Jude Donor '14-'15-'16
NCM Sinkhole Donor
This was was later modified when I brought my car to them. I believe the final difference was only 1.5 lbs per corner in the front. That was the comparison between the 9668 kit and the CCM package.
Bottom line is this car is very heavy so getting any weight off the car in the proper fashion will benefit. We are now over 300 lbs off the car. And it's still 31xx lol.
Bottom line is this car is very heavy so getting any weight off the car in the proper fashion will benefit. We are now over 300 lbs off the car. And it's still 31xx lol.
Thanks!
Best,
Gene
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Drifting
Joined: Mar 2012
Posts: 1,273
Likes: 49
Most notables were the seats, wheels/tires and carpet/insulation.
Leeds.io
Joined: Sep 2003
Posts: 4,604
Likes: 409
From: White Mountains
St. Jude Donor '14-'15-'16
NCM Sinkhole Donor
I did a long time ago and I haven't updated it recently unfortunately. I believe we were at close to 200 pounds at that time. It is called "track car build thread". Maybe I will try and update this weekend.
Most notables were the seats, wheels/tires and carpet/insulation.
Most notables were the seats, wheels/tires and carpet/insulation.
https://www.corvetteforum.com/forums...ld-thread.html
Drifting
Joined: Mar 2012
Posts: 1,273
Likes: 49
about 14 I believe. I need to find my notes. We left just enough fluid as to not set off the warning light. We also removed the tubing, wipers and wiper motor assembly. Assembly was made of aluminum so not much weight there.
Le Mans Master
Joined: May 2006
Posts: 9,993
Likes: 1,136
From: League City Tx
If you're ballin out of control.... get the carbon fiber seats ($5k), Ti exhaust ($5k), Lithium battery, CCB brake kit, change tires to non run flat style on Cup wheels. For the $20k you just spent, you got about 150lbs off of the car.