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| Balance w/Lexan Hatch Glass | |
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| Tweet Topic Started: Oct 23 2011, 07:55 AM (404 Views) | |
| black83zee | Oct 23 2011, 07:55 AM Post #1 |
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Media Specialist
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>I know the topic of a Lexan hatch replacement has been brought up before here, but how would taking the 75+ pounds off the rear affect the balance of the car? That's quite a significant amount to be removed from the rear! That's got to affect the handling in a negative way, right? |
350, carb, headers, side exhaust, T-5, aluminum ds, Baer discs, Bilsteins, tubular a-arms, tubular torque arm, adjustable track bar and control arms. | |
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| iroc-z86 | Oct 23 2011, 08:16 AM Post #2 |
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Senior
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i would think so unless you put a bigger spoiler on it for more downforce as you go faster |
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| 1320B4U | Oct 23 2011, 09:34 AM Post #3 |
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"Miley Cyrus Club Pres"
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Move battery in the back...an average battery will weigh 30+pounds...and/or switching to a fiberglass hood will offset the weight different in the front...what were our cars weight f/r anyhow?..they weren't 50/50 or even close if i remember correctly...like 60/40 or something no? |
![]() 1991 R/S..1992 L98 Firehawk Tribute (sold)..1999 c5/t56 (sold)..2012 z-71 | |
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| black83zee | Oct 23 2011, 10:19 AM Post #4 |
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Media Specialist
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I think the next experiment will be to drive this car with the hatch and t-tops off. I want to see what'll happen.... Dave...it's 57/43 according to road and track. From 1985 Car and Driver.
Edited by black83zee, Oct 23 2011, 10:41 AM.
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350, carb, headers, side exhaust, T-5, aluminum ds, Baer discs, Bilsteins, tubular a-arms, tubular torque arm, adjustable track bar and control arms. | |
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| SomeGuy25thZ | Oct 23 2011, 11:27 AM Post #5 |
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Member
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You'd certainly have less traction. But i wonder what it would do to spring rates. I think that would be one of the bigger things to look into but dont know too much about it. |
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1992 z28 - 383 LT1/T56 - FAST XFI 2.0 completed. 425 RWHP N/A. D1SC later this year. 2012 S4 - new DD, monsoon grey, prestige, titanium, 6M. | |
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| firechicken269 | Oct 23 2011, 11:35 AM Post #6 |
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89 Formula 350
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fiberglass hood and battery relocation would help out alot. maybe pull the a/c too and thatll shift most of the saved weight, if not all, to the back. |
![]() 1989 Formula 350, 5.7 TPI, T-5, WS6 suspension, 3:23 posi rear, disc brakes, T-Tops, Holley 52mm TB, Ported Upper Plenum, SLP Siamese Runners, 24# Injectors, G92 Exhaust option, Custom Chip(By gp90gta). car definitely wouldnt be what it is today without alot of help from all my friends here... thanks guys | |
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| gp90gta | Oct 23 2011, 05:01 PM Post #7 |
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The Professor
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It wont effect the traction to much because the glass is 90% of the weight and its called polar weight, this is the weight furthest away from CG, the springs and sway bar would have to be adusted/changed to correct the cross weight, the battery unlike drag cars would be better located in the passenger seat location or rear seat, this get the weight of things you cant just throw out closer to the CG. |
![]() 1990 GTA, 350, AFR195's, TPIS Miniram, Dyno Don headers, Custom bumpstick by Bullet cams, 36lbs injectors, Spohn SFC's, Custom tune by me. | |
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| BlackMagic | Oct 24 2011, 10:59 AM Post #8 |
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Senior
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There's always thing you can do to get more traction, shave weight if/where you can but I don't see how it would really be cost effective for a street car to run lexan windows unless its for some sort of cosmetic enhancement. Decreased weight furthest away from cg does decrease body roll though. Keeping weight transfer closest to the cg is best as far as handling goes. |
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355, KB pistons, Eagle rods, ARP rod bolts, Ported 882's, bolt in studs/Comp cam/Timing gears. 9.58:1 CR, Victor JR intake port matched, FI Tech fuel injection, MSD Pro Billet, Blaster II and CDI box, Hooker comps to 4" Hawks Sinister Exhaust w/ Hooker Max Flow, Founders tubular LCA/Prothane bushings, LS1 rear brakes, Brembo fronts. Dropped/Fully Shaved and smoothed exterior and engine bay/VPA door kit/Viper red RN/C5 wagon wheels | |
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| black83zee | Oct 24 2011, 04:33 PM Post #9 |
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Media Specialist
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Well for sure the battery is going to be relocated in the right rear seat well. For that matter a fuel cell that's inside the rear axles would be better for balance too. |
350, carb, headers, side exhaust, T-5, aluminum ds, Baer discs, Bilsteins, tubular a-arms, tubular torque arm, adjustable track bar and control arms. | |
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| BlackMagic | Oct 24 2011, 07:28 PM Post #10 |
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Senior
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Well make sure you get sealed box and a solid cut off switch, so its track legal. Not so sure how to run an easily accessible cut off from the rear seat to the rear bumper area. Which is why I pulled my spare/jack and mounted my battery there. Though I hear the inspectors at English town don't even pop the hood nowadays. |
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355, KB pistons, Eagle rods, ARP rod bolts, Ported 882's, bolt in studs/Comp cam/Timing gears. 9.58:1 CR, Victor JR intake port matched, FI Tech fuel injection, MSD Pro Billet, Blaster II and CDI box, Hooker comps to 4" Hawks Sinister Exhaust w/ Hooker Max Flow, Founders tubular LCA/Prothane bushings, LS1 rear brakes, Brembo fronts. Dropped/Fully Shaved and smoothed exterior and engine bay/VPA door kit/Viper red RN/C5 wagon wheels | |
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| klowny | Oct 24 2011, 07:49 PM Post #11 |
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Da Klownfather
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U know stan..I was looking at some scales the other day..around 500 bux..four pads..each pad goes under a tire and it tells u how much the wieght is per pad...It crossed my mind to buy it..but then I smacked myself and realized I'd be an idiot if I did buy it..I need edzies $$$ |
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| BlackMagic | Oct 24 2011, 08:01 PM Post #12 |
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Senior
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You can go to a weight station for trucks, throw em a good tip and they should let you on no problem. Some scrap yards also have in floor scales. |
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355, KB pistons, Eagle rods, ARP rod bolts, Ported 882's, bolt in studs/Comp cam/Timing gears. 9.58:1 CR, Victor JR intake port matched, FI Tech fuel injection, MSD Pro Billet, Blaster II and CDI box, Hooker comps to 4" Hawks Sinister Exhaust w/ Hooker Max Flow, Founders tubular LCA/Prothane bushings, LS1 rear brakes, Brembo fronts. Dropped/Fully Shaved and smoothed exterior and engine bay/VPA door kit/Viper red RN/C5 wagon wheels | |
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| black83zee | Oct 25 2011, 06:41 AM Post #13 |
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Media Specialist
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But the four pad scales gives you weight distribution as well........ Ed or Spade...what was the weight difference between the glass hatch and your notch hatch? Fiberglass, right? Edited by black83zee, Oct 25 2011, 07:05 AM.
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350, carb, headers, side exhaust, T-5, aluminum ds, Baer discs, Bilsteins, tubular a-arms, tubular torque arm, adjustable track bar and control arms. | |
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| 1320B4U | Oct 25 2011, 08:44 AM Post #14 |
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"Miley Cyrus Club Pres"
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Truck weight stations can give you front/back weight but not at each corner (which really doesn't matter all that much anyhow)...only catch is you need to wear a cowboy hat and have a screaming case of hemroids to get access. |
![]() 1991 R/S..1992 L98 Firehawk Tribute (sold)..1999 c5/t56 (sold)..2012 z-71 | |
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| rustrider73 | Oct 25 2011, 11:45 AM Post #15 |
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Advanced Member
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listen if you really need to know, I can get you in touch with a circle track guy that has some scales. |
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