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Author Topic: Curb Weights for S12 and many other cars  (Read 29672 times)

Offline Lupich

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Curb Weights for S12 and many other cars
« on: 02:49:34 AM / 19-Sep-08 »
Can anyone give me a few points as to how to reduce the weight of my S12? Rear seats and interior stuff is pretty much out. I want to get this car as light as possible as its quite heavy.

Moderator Edit: Second post updated to show curb weight comparison for many different cars.
« Last Edit: 07:47:32 PM / 12-Nov-09 by Arro »

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Offline Arro

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« Reply #1 on: 03:00:34 AM / 19-Sep-08 »
Shoulda put this in "Electrical & Chassis". tsk tsk  I'll move it there.

Well you did the biggest part... now scrape off all the sound deadening material in the floorpan... remove your dash and gut the HVAC ducting and controls, the stereo, the glovebox, ditch out the center console, remove your AC (if you have it), remove your door panels and make your own functional lightweight panels, get lightweight forged aluminum wheels, remove the spoiler from the hatch (if you have one), ditch any ground effects if you have them, remove any rubstripping, and the front lip if you have that.

Edited to include updated curb weight comparisons:

Updated the list with some oldschool musclecars and a new musclecar, as well as 1G Neon.

2,300 lbs. - Corolla GT-S (1986)
2,355 lbs. - 240Z
2,441 lbs. - 1G Neon ACR
2,493 lbs. - 1G Neon R/T
2,500 lbs. - Nissan Sentra (current)
2,524 lbs. - Toyota MR2 Mark II
2,625 lbs. - Maxda RX-7 (FC)
2,640 lbs. - 200SX (S12 Turbo/NA 4 cyl)
2,659 lbs. - 2G Dodge Neon/SRT-4
2,699 lbs. - 240SX (S13)
2,756 lbs. - Honda S2000 (2,855 lbs. in later years)
2,762 lbs. - 240SX (S14)
2,772 lbs. - 200SX (S12 "SE" V6)
2,822 lbs. - Mazda RX-7 (FD Series 8 )
2,840 lbs. - Honda Prelude (4G 1992-96)
2,899 lbs. - Honda Civic Si (2007 coupe)
3,000 lbs. - Toyota Supra Mark II
3,000 lbs. - Subaru WRX (2G)
3,095 lbs. - Mitsubishi Eclipse GSX (1G)
3,153 lbs. - Skyline GT-R (R34)
3,157 lbs. - Mitsubishi Eclipse GSX (2G)
3,265 lbs. - Toyota Supra Mark IV
3,299 lbs. - 300ZX (Z32)
3,300 lbs. - 300ZX 2-seater (Z31)
3,400 lbs. - Plymouth 'Cuda AAR (1971)
3,468 lbs. - Toyota Supra Mark III
3,560 lbs. - BOSS 351 Mustang Mach I (1971)
4,152 lbs. - Dodge Challenger (2008, 2009)


« Last Edit: 07:46:17 PM / 12-Nov-09 by Arro »
-Jason Arro


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formerly,
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'84 Nissan 200SX Turbo
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Drive it like you stole it, and work on it like you married it - self quote
Quote from: ka-t.org
Hella flush and all associates should be gunned down for brainwashing people into thinking a 225 and lots of camber is proper wheel fitment. THAT IS EASY, anyone can camber a skinny as tire till it dosnt rub. Now fitting an 11 with a 315 on stock fender with reasonable camber, that is fitment. And looks, and performs better than both.
i dont own a s12 at the moment but trying to acquire one to get rid of my s13 hatch
Quote from: SHOUTBOX
[27:54] zastaba: I had a friend touch the contacts on his distributer once
[28:04] zastaba: He did the super jumping up and down pain dance

Offline blue streak

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« Reply #2 on: 04:05:57 PM / 23-Sep-08 »
If its "track only" yank the windows & run plexi windshield. If your brave(or stupid enough) yank the bumper supports

Offline DjayS12

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« Reply #3 on: 04:24:21 PM / 23-Sep-08 »
Rear seat weight nothing.

Offline silversilviaS12

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« Reply #4 on: 04:25:59 PM / 23-Sep-08 »
what does the s12, say ca20 or 18, no wing, weigh stock wet anyway? any one know?

Offline rage

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« Reply #5 on: 04:45:33 PM / 23-Sep-08 »
everything arro said is a good start.
also get a dry cell(odyssey) battery
invest in a hole saw kit and goto town swiss cheesing everything before the front strut towers and everything after the rear strut towers
open up the wiring harness and strip everything out youre not using
remove most of the brackets in the engine bay and replace them with zipties
remove the sunroof(if you have one) and put a fiberglass plug in its place
cut the inner exoskelton out of the hood
etc etc

TX > CA

Offline IggyEGuana

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« Reply #6 on: 09:07:44 PM / 23-Sep-08 »
woot woot.  Yeah what Arro and rage said is awesome.  All HVAC fron behind dash was 43lbs.  Floor carpet/pad was suprisingly heavy.  Lots of dirt and stains lol.  The rear seat alone doesnt weigh too much ya but when you strip out the entire interior, top to bottom, front to back and leave nothing but the dash and door panels you'll see all that stuffs weighs a lot.  BTW best to start with a zero option MK1 notch.  Lightest s12.  I have a low option MK1 hatch stripped to the bone and its mighty light.  Not sure how light but I can tell when i push it around that it svelte.  Mayb almost as light as my stock DD auto/AC CRX.  Rough guesstamate like 2300-2500lbs.

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Offline David B

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« Reply #7 on: 09:09:51 PM / 23-Sep-08 »
line the rear interior, then take off the hatch  


caged ca20e/ka24e/sr20det/ka24de/1jzgte SRA hatch. super sick

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Offline bleuoval64

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« Reply #8 on: 11:02:40 PM / 23-Sep-08 »
I can't believe no one said to remove the spare tire...  By far one of the easiest way to drop some weight.  Ditch the jack and stuff too.  Remove the antenna and antenna cable, if its not too much trouble.  Also, removing the fuel tank and running a fuel cell can mean less weight too. Maybe run an aluminum radiator.  Pull and plug off emissions stuff if you still have it.  Consider using a Sparco(or other) seat.  They seem to be uncomfortable as hell, but if its a track only car it shouldn't be too bad.  If its for track only, consider removing the mirrors(at least the one in the car).

I'm not sure if its possible(or an easy mod) on an s12, but one somewhat popular mod in Mustangs (and other cars) is to switch to a manual steering rack.  You'll loose a few pounds and free up some hp in the process.
« Last Edit: 11:08:04 PM / 23-Sep-08 by bleuoval64 »
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Offline Julie

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« Reply #9 on: 11:16:34 PM / 23-Sep-08 »
and if you have money to burn, build some fiberglass front fenders and a fiberglass hood. run a one piece aluminum driveshaft, smaller aluminum radiator, aluminum exhaust manifold inplace of the iron one.

if its a track car, u can remove all lights as well, possibly the dashboard. yank the factory exhaust system and run a short aluminum one w/ a small light muffler, aimed out the side of the car.


"like people, every car possesses a unique character, with its own DNA, talents, and idiosyncrasies. push it too hard and it'll turn on you, as a person would. if its worth anything, it gets more interesting the more you get to know it"

luck is earned through hard work and determination, not to mention the willingness to take risks and to see bad luck and setbacks as opportunities for growth and a new direction.

Offline rage

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« Reply #10 on: 11:28:25 PM / 23-Sep-08 »
front fenders weigh nothing
hood ya, but mine doesnt weigh much since theres no exoskeleton, its like somewhere between stock and what a cf hood weighs

if you wanna go real crazy cut out the spare tire well, like everything after the rear strut towers, like on the dent sport s13

also you could reduce weight on the engine itself, ditch the cast iron exhaust manifold in favor of SS or the like (oops julie beat me)

as for the intake manifold, maybe cut it up and put on itb's?
lightweight pullies, also

TX > CA

Offline EternalSwap

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« Reply #11 on: 03:16:19 AM / 24-Sep-08 »
Run no oil or coolant, liquids weigh a lot.

Get aftermarket carbon fibre seats with no sliders. Run a harness bar and harness. Use Lexan instead of glass. Get rid of your clutch fan. There's a lot of supports, such as bumper and interior supports, that can be drilled/ removed
Ditch the intake/EGR for less weight
Get a lighter hood (probably the MKI flat hood?)
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Offline brewster240

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« Reply #12 on: 04:34:21 AM / 24-Sep-08 »

Offline IggyEGuana

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« Reply #13 on: 12:02:47 AM / 25-Sep-08 »
Quote from: EternalSwap
Run no oil or coolant, liquids weigh a lot.
I did that once.. totally worth it lol


That sentra gets me everytime.  Only thing though was I was hoping for more time off the ET.  Such extreame weight loss I would've expected an even quicker time over stock.  Wishful thinking for the results of my own weight reduction I think lol

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Offline tac911t

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« Reply #14 on: 02:42:12 PM / 29-Sep-08 »
My 84 notchback SCCA racer, weighs 2530 lbs, with 1/2 tank of gas, and me in the car.  Interior is stripped, only the dash remains, with a racing seat and rollcage
Todd Cohen
1984 200SX SCCA ITB

Offline Arro

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« Reply #15 on: 04:11:35 PM / 29-Sep-08 »
Wow, I didn't even know about your car... where are you at anyways? What have you done with your notchback?

-Jason Arro


'85 Nissan 200SX (KA24DE)
formerly,
'85 Nissan Silvia RS-X - FJ20 w/ dual Weber carbs
'84 Nissan 200SX Turbo
'85 Nissan 200SX Turbo
Drive it like you stole it, and work on it like you married it - self quote
Quote from: ka-t.org
Hella flush and all associates should be gunned down for brainwashing people into thinking a 225 and lots of camber is proper wheel fitment. THAT IS EASY, anyone can camber a skinny as tire till it dosnt rub. Now fitting an 11 with a 315 on stock fender with reasonable camber, that is fitment. And looks, and performs better than both.
i dont own a s12 at the moment but trying to acquire one to get rid of my s13 hatch
Quote from: SHOUTBOX
[27:54] zastaba: I had a friend touch the contacts on his distributer once
[28:04] zastaba: He did the super jumping up and down pain dance

Offline IggyEGuana

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« Reply #16 on: 07:30:20 PM / 29-Sep-08 »
Quote from: tac911t
My 84 notchback SCCA racer, weighs 2530 lbs, with 1/2 tank of gas, and me in the car.  Interior is stripped, only the dash remains, with a racing seat and rollcage

how much do you think the cage adds to the car?  Any other mods for safety or otherwise that add weight?  I assume that all AC components inside and out are gone along with all unneeded emissions and electronic equipment and all sound deadening.   Chassis stitch welded?  Media blasted and reshot or just sprayed over the old paint?  Any plexi-glass/lexan windows?  Custom harness with only wiring needed?  Undercarriage blasted and reshot?  Thats all I can think of that I wanna do with my car.  Mayb acid dip it lol.  Dont think they even do that anymore.  I'm just trying to get an idea of how extensive your weight reduction is and what kind of weight I'm really gonna be.  Thanks tons for posting your weight!

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you sir are emblazoned with win.

Offline Arro

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« Reply #17 on: 07:39:53 PM / 29-Sep-08 »
Waylon like you did earlier, I'm suggesting he looks at Sterling's car, as it's damn close to 2,200 lbs... or less? He really stripped it bare. Honestly I wouldn't want to be lighter... it's gonna be grip-challenged on even decent street tires as it is.
« Last Edit: 07:40:37 PM / 29-Sep-08 by Arro »
-Jason Arro


'85 Nissan 200SX (KA24DE)
formerly,
'85 Nissan Silvia RS-X - FJ20 w/ dual Weber carbs
'84 Nissan 200SX Turbo
'85 Nissan 200SX Turbo
Drive it like you stole it, and work on it like you married it - self quote
Quote from: ka-t.org
Hella flush and all associates should be gunned down for brainwashing people into thinking a 225 and lots of camber is proper wheel fitment. THAT IS EASY, anyone can camber a skinny as tire till it dosnt rub. Now fitting an 11 with a 315 on stock fender with reasonable camber, that is fitment. And looks, and performs better than both.
i dont own a s12 at the moment but trying to acquire one to get rid of my s13 hatch
Quote from: SHOUTBOX
[27:54] zastaba: I had a friend touch the contacts on his distributer once
[28:04] zastaba: He did the super jumping up and down pain dance

Offline ryan206

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« Reply #18 on: 02:57:22 AM / 30-Sep-08 »
On my WA Registration, it says my car weighs 2395lbs.

My Notch is complete basemodel, I've added a bunch of stuff since I got it, so I'm not sure what it weighs now. It has full interior.

Offline rage

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« Reply #19 on: 01:19:32 PM / 30-Sep-08 »
Quote from: Arro
Waylon like you did earlier, I'm suggesting he looks at Sterling's car, as it's damn close to 2,200 lbs... or less? He really stripped it bare. Honestly I wouldn't want to be lighter... it's gonna be grip-challenged on even decent street tires as it is.
BS, i think hes realized how outlandish his quest is for the 2200lb s12. you would really have to swiss cheese an s12 chassis to get it that low, like the opera s2000. it definitely wouldnt come as easy as stripping it bare. hell, my s12 has nothing on it and its still quite heavy. the sad truth here is that were dealing with heavy cars from the factory

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