Weight reduction
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 265
From: St. Louis, MO
St. Jude Donor '08
Just saw this thread & forgot I'd posted last fall...My '12 GS 1LT 6spd coupe started life out at 3,260;
-removed 90% of washer fluid, FRC's, intake cover & misc for @ 12 lbs
-Pfadt headers & x-pipe dropped 27lbs
-Finspeed 2piece rotors will drop 32lbs (rotational)
-Michelin Pilot ss will drop 12 lbs (rotational)
-Shorai lio battery will drop 30 lbs..or @ 3,150.
I think I'm done for now & am interested to see how this feels @ Laguna Seca next month.
-removed 90% of washer fluid, FRC's, intake cover & misc for @ 12 lbs
-Pfadt headers & x-pipe dropped 27lbs
-Finspeed 2piece rotors will drop 32lbs (rotational)
-Michelin Pilot ss will drop 12 lbs (rotational)
-Shorai lio battery will drop 30 lbs..or @ 3,150.
I think I'm done for now & am interested to see how this feels @ Laguna Seca next month.
I dropped form 3250 to 3165 and went from 11.2@124 to 10.99@126...a consistent .2 and 2 mph gain on the drag strip.
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 265
From: St. Louis, MO
St. Jude Donor '08
Joe G, impressive numbers...I've read lots of your posts & they're always informative & helpful...much obliged. Now I need to improve my driving skills to do justice to the car...
I just remembered I dropped the 2nd pair of cats from the stock '12 x-pipe & I think they're @ 5-10lbs each...looking forward to checking my corner weight & see how it all ends up.
I just remembered I dropped the 2nd pair of cats from the stock '12 x-pipe & I think they're @ 5-10lbs each...looking forward to checking my corner weight & see how it all ends up.
Made my day.I remember when I first started in my C5 convertible, I got yelled at because I was barely breaking 13.99.
I've come a long way.
This website will help you out a LOT. It did me, both launching and shifting. Study his words and listen to his launches. Ranger is an excellent coach. I'm very happy to have met him in person at the track in 2010, a fine gentleman indeed, he coached 3 people to new PB's that evening.
You probably don't want to listen to my launches when you are first starting out...you need a little practice to know how to do this or you'll break things.
www.rangeracceleration.com
Burning Brakes
Joined: Aug 2012
Posts: 811
Likes: 18
From: STL
Weighed the car last month with the TSW wheels/Lighter torque converter/Exhaust changes.
With the low gas just coming on it was 3140.
Last few days i have added a glass roof -5lbs.
Also removed wipers since i never use them.
With the low gas just coming on it was 3140.
Last few days i have added a glass roof -5lbs.
Also removed wipers since i never use them.
Burning Brakes
Joined: Nov 2009
Posts: 1,157
Likes: 1
From: Oxford Pa
Advanced
Joined: Feb 2013
Posts: 51
Likes: 0
I know there is a good deal of info on lighter z06 rotors, but how about z51 rotors? There is a lot of weight to be lost with tires, wheels, and rotors. And that's important weight to drop.
I would love to drop 100-150 pounds of weight, with 50+ in rotational mass.
I'm glad that the more intelligent members of this board have emerged, as well.
I would love to drop 100-150 pounds of weight, with 50+ in rotational mass.
I'm glad that the more intelligent members of this board have emerged, as well.
Last edited by NCorvette; Mar 1, 2013 at 09:16 AM.
Le Mans Master
Joined: Oct 2006
Posts: 5,078
Likes: 19
From: Cumming, GA
Just saw this thread & forgot I'd posted last fall...My '12 GS 1LT 6spd coupe started life out at 3,260;
-removed 90% of washer fluid, FRC's, intake cover & misc for @ 12 lbs
-Pfadt headers & x-pipe dropped 27lbs
-Finspeed 2piece rotors will drop 32lbs (rotational)
-Michelin Pilot ss will drop 12 lbs (rotational)
-Shorai lio battery will drop 30 lbs..or @ 3,150.
I think I'm done for now & am interested to see how this feels @ Laguna Seca next month.
-removed 90% of washer fluid, FRC's, intake cover & misc for @ 12 lbs
-Pfadt headers & x-pipe dropped 27lbs
-Finspeed 2piece rotors will drop 32lbs (rotational)
-Michelin Pilot ss will drop 12 lbs (rotational)
-Shorai lio battery will drop 30 lbs..or @ 3,150.
I think I'm done for now & am interested to see how this feels @ Laguna Seca next month.
Have heard these exist but have never seen them. Can post a pic?
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Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,108
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
I use the base rotors and drilled them to match the same pattern as my F55/Z51 rotors. 66# for all 4 vs 81# for the larger ones.
With the rollbar installed, it's around 3060 race ready.
With the rollbar installed, it's around 3060 race ready.
Racer
Joined: May 2010
Posts: 475
Likes: 56
Burning Brakes
Joined: Sep 2012
Posts: 1,004
Likes: 271
From: Vancouver, Washington
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,108
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
Leavinu, I was going to buy the Zip Corvette 2-piece rotors w/ Coleman rings as they're also a 32 lbs weight savings (20# front, 12# rear), but was having a hard time justifying the $1,500+.
I didn't even know about the Finspeed's until they showed up for sale here & the $1,200 price point was easier to stomach. They look almost exactly the same too, so I wonder if FS makes them for Zip? The DBA 5000's are very nice too, but I'm not sure they're as light, but could be wrong @ that. I would definitely look into Juic3d's rotors for your coupe.
If the rotors are zinc coated that's a huge benefit as I have to paint the non-swept area of the coleman rotors to keep them from rusting & looking awful.
http://forums.corvetteforum.com/c6-p...ors-c6z06.html
I didn't even know about the Finspeed's until they showed up for sale here & the $1,200 price point was easier to stomach. They look almost exactly the same too, so I wonder if FS makes them for Zip? The DBA 5000's are very nice too, but I'm not sure they're as light, but could be wrong @ that. I would definitely look into Juic3d's rotors for your coupe.
If the rotors are zinc coated that's a huge benefit as I have to paint the non-swept area of the coleman rotors to keep them from rusting & looking awful.
http://forums.corvetteforum.com/c6-p...ors-c6z06.html
Burning Brakes
Joined: Jan 2009
Posts: 1,204
Likes: 14
From: Savannah Ga
San,
I appreciate the reply. I have one more question, then I'll get out your hair. Do you believe the smaller 12 cell battery would work just fine also? I ask because it still has more cca than the Deka that you were using @ 410 amps and 20 AH. I would think that it would be fine being a higher cca? I'm overseas at the moment and am trying to get everything purchased for my toys to be ready to use them when I get back.
Brett
I appreciate the reply. I have one more question, then I'll get out your hair. Do you believe the smaller 12 cell battery would work just fine also? I ask because it still has more cca than the Deka that you were using @ 410 amps and 20 AH. I would think that it would be fine being a higher cca? I'm overseas at the moment and am trying to get everything purchased for my toys to be ready to use them when I get back.
Brett
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,108
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
Hoxxoh, check out the master parts weight list; 26.6 & 19.9 for the stock front & rears.
http://forums.corvetteforum.com/c6-z...ight-list.html
Finspeed;
http://store.finspeed.com/Z06-Front-...C6-Z06CR-F.htm
Zip Corvette;
http://www.zip-corvette.com/GroupDetails/SubGroupResults.aspx?gid={47bb7d5b-b4ec-4868-972a-c719658bcba0}&SearchType=_GROUP_SEARCH&G roupName=Performance+Brake+Rotors&
http://forums.corvetteforum.com/c6-z...ight-list.html
Finspeed;
http://store.finspeed.com/Z06-Front-...C6-Z06CR-F.htm
Zip Corvette;
http://www.zip-corvette.com/GroupDetails/SubGroupResults.aspx?gid={47bb7d5b-b4ec-4868-972a-c719658bcba0}&SearchType=_GROUP_SEARCH&G roupName=Performance+Brake+Rotors&
Tolero Apto Victum
Joined: Jul 2007
Posts: 9,669
Likes: 37
From: Woodlands TX
From what I have read, is that during the heat cycles on drilled brake rotors, some drivers have found hairline stress fractures near the drilled points. As for real world race car rotors, most of them are flat face. If you would like a high quality lightweight brake rotor, then I would recommend - http://shop.performanceafx.com/C6-Z51-Corvette_c15.htm I believe this is what the other poster was getting at.
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,108
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
From what I have read, is that during the heat cycles on drilled brake rotors, some drivers have found hairline stress fractures near the drilled points. As for real world race car rotors, most of them are flat face. If you would like a high quality lightweight brake rotor, then I would recommend - http://shop.performanceafx.com/C6-Z51-Corvette_c15.htm I believe this is what the other poster was getting at.
I've been using drilled base rotors for at least 40,000 miles, which includes lots of 125 mph stops at the drags. They're in comparable condition to the OEM J55 rotors that I replaced. The key is to get even cooling. Never stay on the brakes or completely stop after a major heating event.
I suspect the other poster was thinking that only major manufacturers knew how to drill rotors. While it's not for everybody, with the right skillset it can be done safely.
Sr.Random input generator
Joined: Jan 2008
Posts: 7,811
Likes: 2,237
From: Sammamish, WA
The hairline fractures commonly happen on the drilled OEM rotors too. Whether it's a problem, depends on how hot they got and how evenly they cooled. You can kill a non-drilled rotor the same way.
I've been using drilled base rotors for at least 40,000 miles, which includes lots of 125 mph stops at the drags. They're in comparable condition to the OEM J55 rotors that I replaced. The key is to get even cooling. Never stay on the brakes or completely stop after a major heating event.
I suspect the other poster was thinking that only major manufacturers knew how to drill rotors. While it's not for everybody, with the right skillset it can be done safely.
I've been using drilled base rotors for at least 40,000 miles, which includes lots of 125 mph stops at the drags. They're in comparable condition to the OEM J55 rotors that I replaced. The key is to get even cooling. Never stay on the brakes or completely stop after a major heating event.
I suspect the other poster was thinking that only major manufacturers knew how to drill rotors. While it's not for everybody, with the right skillset it can be done safely.
Last edited by X25; Mar 11, 2013 at 03:37 PM.
