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 240SX Weight Reduction Part List

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speed_demon
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PostSubject: 240SX Weight Reduction Part List   Mon Jun 25, 2012 1:20 pm

Copied over from NRR.com.

I have been working on compiling an accurate weight reduction part list for S chassis cars.

****Conflicting weights will not be changed until I get a 2nd verification from another member or a picture posted/PM'ed of the part weighed w/legit scale****

All prices are including shipping except the Deka batteries, those are local prices without tax so price per pound may vary depending on location and sale prices.

The closer to the top of the list an item is, the lower the overall cost to weight reduced is (Best bang for the buck).


Deka lightweight battery #1 (Deka ETX 14) $70: -29lbs.
11 pounds, stock S13 battery weighs 40.

$2.41 per pound reduced.

Deka lightweight battery #2 (Deka ETX16L) $75: -24.5lbs.
15.5 pounds, stock S13 battery weighs 40.

$3.06 per pound reduced.

Braille B106 ultra light weight battery $150: -33.1lbs.
6.9 pounds, stock S13 battery weighs 40.

$4.53 per pound reduced.

Braille light weight battery B14115 $160: -28.5lbs
11.5 pounds, stock S13 battery weighs 40.

$5.61 per pound reduced

Fiberglass doors (GTP) $640: -104lbs.
13 pounds each without glass, stock S13 doors weigh ~65 each without glass.

$6.25 per pound reduced.

300ZX aluminum rear uprights $100 ($50 each, shipped): -4.8lbs.
Z32 uprights weigh 7 pounds each, S13 cast iron uprights weigh 11.8 pounds each.

$10.41 per pound reduced

Seibon carbon fiber doors $1500: -112lbs
9 pounds each without glass, stock S13 doors weigh ~65 each without glass.

$13.39 per pound reduced.

Diamond H4 replaceable bulb headlights (Glass housing) $26. -1.5lbs.
Stock S13 240SX Sylvania lights weigh 3.5 pounds for both units, Diamond housings without bulbs weigh 2 pounds for both units.

$17.33 per pound reduced.

Corbeau A4 $320: -15lbs.
A4 seat weighs 25, S14 seat with brackets weighs 40 pounds.

$21.33 per pound reduced, per seat.

Seibon carbon fiber hood $480: -21lbs.
OEM style Carbon fiber weighs 18, stock S13 hood is 39 pounds without hinges or insulation.

$26.66 per pound reduced.

Fidanza aluminum flywheel $295: -11lbs.
Fidanza flywheel weighs 11 pounds, stock KA24DE is 22.

$26.81 per pound reduced.

Corbeau A4 $320: -11lbs.
A4 seat weighs 25, S13 seat with brackets weighs 36 pounds.

$29.09 per pound reduced, per seat.

Aluminum KA/SR MT driveshaft $403: -9lbs.
11 pounds, stock is ~20.

$44.77 per pound reduced

Rota Slip Stream 16x7 5x114.3 $145 each: -2.5lbs.
Rota's weigh 13.5 pounds each, 90-96 300ZX 16x7.5 wheels are 16 each.

$58 per pound reduced per wheel.

Enkei RPF1 16x7 5x114.3 $208: -2.3lbs.
Enkei's weigh 13.7 pounds, 90-96 300ZX 16x7.5 wheels are 16 each.

$90.43 per pound reduced per wheel.

Volk TE37 16x7 5x114.3 $649 : -4.8lbs.
Volk's weigh 11.2 pounds each, 90-96 300ZX 16x7.5 wheels are 16 each.
$135.20 per pound reduced per wheel.

In a sense, the Deka ETX14 battery is the best "bargain" method of losing quick weight on a car.

Wheels are one of the single most expensive items to reduce weight on an S13! They have a worse $/weight lost ratio than a carbon fiber hood or carbon fiber doors!

Also, I personally have Z32 NA wheels on my car so those are all that I compared the aftermarket wheels to so far. More to come after I find verified wheel weights.




Member posted weights.
Item--------------------------------------------Weight----------Member that posted it.
Manual crank window S13 door panels-----6.5lbs ea---------Def
S13 OEM front door speakers-------------1.25lbs ea---------Def
S13 OE side window glass--------approx. 12lbs ea-----------Def
S13 OE door impact bars-----------------10.5lbs ea---------Def
OE S13 hood with hinges-----------------41lbs--------------Def
KA24 OE flywheel------------------------21lbs--------------hai1206vn
OE clutch and pressure plate-------------13lbs--------------hai1206vn
Compete OE A/C system-----------------38lbs--------------hai1206vn
Dead weight on firewall------------------1lb----------------hai1206vn
Dead weight on subframe----------------1lb----------------hai1206vn
Firewall sound deadening----------------19.6lbs------------speed_demon
OE Base model S13 hatch rear sway -----5lbs---------------speed_demon

Engine weight.
KA24DE complete with fan, all accessories, intake and exhaust manifolds, EGR, and AC pump (No oil, coolant, or spark plugs). 371lbs.




Sources:
Deka battery weight. [You must be registered and logged in to see this link.]
My personal picture of the ETX14 battery on my scale [You must be registered and logged in to see this link.]

Braille B14115 battery weight: [You must be registered and logged in to see this link.]
Braille B106 battery weight: [You must be registered and logged in to see this link.]

Z32 upright and S13 upright comparison with weights. [You must be registered and logged in to see this link.]

FRP door weight. Site: [You must be registered and logged in to see this link.]
Picture w/scale: [You must be registered and logged in to see this link.]

Headlight weight. Picture of stock headlight on my very accurate postage scale [You must be registered and logged in to see this link.]
Picture of the Diamond/Chinese made light housing, with bulb. [You must be registered and logged in to see this link.]

Corbeau A4 seat weight. [You must be registered and logged in to see this link.]

Stock flywheel weight. [You must be registered and logged in to see this link.]

Stock driveshaft weight. [You must be registered and logged in to see this link.]
Aluminum driveshaft weight. [You must be registered and logged in to see this link.]

KA24DE weight verification. [You must be registered and logged in to see this link.]
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If you have any info pertaining to anything listed feel free to PM me about it.
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speed_demon
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PostSubject: Re: 240SX Weight Reduction Part List   Mon Jun 25, 2012 1:22 pm

Hope you guys don't mind me copying this over. There's some good accurate info here.

Also, anybody with some part weights can add pics and I'll update the list.
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Flicktitty
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PostSubject: Re: 240SX Weight Reduction Part List   Mon Jun 25, 2012 5:36 pm

This is very cool!

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He-Man47
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PostSubject: Re: 240SX Weight Reduction Part List   Mon Jun 25, 2012 7:57 pm

speed_demon wrote:


Braille B106 ultra light weight battery $150: -33.1lbs.
6.9 pounds, stock S13 battery weighs 40.

$4.53 per pound reduced.

Braille light weight battery B14115 $160: -28.5lbs
11.5 pounds, stock S13 battery weighs 40.

$5.61 per pound reduced


Am I misreading that, or is it more cost-effective to buy the lighter battery?
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77
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PostSubject: Re: 240SX Weight Reduction Part List   Mon Jun 25, 2012 8:21 pm

He-Man47 wrote:
speed_demon wrote:


Braille B106 ultra light weight battery $150: -33.1lbs.
6.9 pounds, stock S13 battery weighs 40.

$4.53 per pound reduced.

Braille light weight battery B14115 $160: -28.5lbs
11.5 pounds, stock S13 battery weighs 40.

$5.61 per pound reduced


Am I misreading that, or is it more cost-effective to buy the lighter battery?
No, you read it right, but consider the performance of the battery itself as well as it's weight.

Great thread, good work Speed.
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Riggle
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PostSubject: Re: 240SX Weight Reduction Part List   Mon Jun 25, 2012 8:28 pm

77 wrote:
He-Man47 wrote:
speed_demon wrote:


Braille B106 ultra light weight battery $150: -33.1lbs.
6.9 pounds, stock S13 battery weighs 40.

$4.53 per pound reduced.

Braille light weight battery B14115 $160: -28.5lbs
11.5 pounds, stock S13 battery weighs 40.

$5.61 per pound reduced


Am I misreading that, or is it more cost-effective to buy the lighter battery?
No, you read it right, but consider the performance of the battery itself as well as it's weight.

Great thread, good work Speed.

Sick thread speed!

Carbon fiber doors/hatch/lexan windows make me gooey.

On the batteries note. I put a Optima Red Top in my car...for the sole purpose of starting every freakin time, no matter what. 30-40lbs doesn't mean much when racing a fully fendered car, you will literally never see any time reduction in a roadracing/autox scenario. There is more time to be had just taking a slightly different line, carrying more speed through a corner, and braking a touch later. Drag racing is a different ball game, lbs mean time, end of story.

My roommate has the exact B106 in his BMW...dead after 1 winter (we revived it, no draw that isn't within spec, I logged and metered it for a week straight). He also cannot run his fans in the pits should we be at the track and its hot as balls out, battery will drain after the fans only being on for a short time. I can run mine for 30-40 mins straight between runs at 95+ degrees.

Just sayin, have to take into consideration what the "weight reduction" is going to mean in the real world. Not on paper.

No weight reduction is worth not driving the car. Otherwise you are reducing the weight of your paperweight?
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He-Man47
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PostSubject: Re: 240SX Weight Reduction Part List   Mon Jun 25, 2012 8:33 pm

77 wrote:

No, you read it right, but consider the performance of the battery itself as well as it's weight.

Great thread, good work Speed.

I figured as much, I just wanted to be sure it wasn't a typo or something lol

Riggle wrote:

reducing the weight of your paperweight

That seems a bit counterproductive, no?

Also, I just found this --> bevisnbutthead
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speed_demon
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PostSubject: Re: 240SX Weight Reduction Part List   Mon Jun 25, 2012 9:18 pm

Riggle, my weight reduction efforts were never intended to give the car lower lap times, that's what seat time is for. The reduction I've done was always intended to make the car more enjoyable, to enhance the driving experience.

I used the 11lb ETX14 battery from fleet farm in my own hatch for a year and only killed it once, when I left my headlights on through a three hour class. Overall it's a battery I will buy again when the time comes to replace my current battery.
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Riggle
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PostSubject: Re: 240SX Weight Reduction Part List   Mon Jun 25, 2012 10:30 pm

speed_demon wrote:
Riggle, my weight reduction efforts were never intended to give the car lower lap times, that's what seat time is for. The reduction I've done was always intended to make the car more enjoyable, to enhance the driving experience.

Oh I certainly wasn't aiming my comments towards you by any means! I was making more general statements regarding weight reduction and how it pertains to (or lack thereof) to being "faster" lap time wise.

If you hang out on NRR...you are legit, no doubt about it. Not trying to debunk your devotion to weight reduction (more like a hobby at this point right!) and its merits.

Again, I dig this thread hardcore, I was only saying make sure the weight reduction mods that are chosen don't make it so the car cant be driven, no matter what you use the vehicle for. Sometimes people can get so wrapped up in making their car a "race car" that they end up either not finishing it or rendering the car undrivable.

I am just attempting to bestow my wisdom of years of f*cking things up in the name of being a racecar, when in reality I was only netting myself downtime of the car and more time under the hood.

WHY?!

BECAUSE RACECAR!

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xwizkidx
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PostSubject: Re: 240SX Weight Reduction Part List   Tue Jun 26, 2012 2:17 pm

This is why i see rust on framerails as a positive thing.. its free and who needs frame rails anyways. i mean... am i right or am i right?


Laughing
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