Unofficial weight reduction thread

[MostPalone]

Has anyone ever weighed the 5 speed and the 6 speed transmissions?

 

[Midnight_Raven]

Unless you daily it, or always on the tender then Shorai works fine. Otherwise it's PITA and not worth it. Get Optima yellow top instead and live a happy life.

Not necessarily true. Although I do drive my car a lot there are times where I leave the car sitting for a week and it still starts up just fine. If you drive it at least once a week a Shorai works. If you going longer than that then yes don't get a Shorai. and I mean who wouldn't want the excuse of driving the NSX at least once a week lol

 

[Soundeffects]

Not necessarily true. Although I do drive my car a lot there are times where I leave the car sitting for a week and it still starts up just fine. If you drive it at least once a week a Shorai works. If you going longer than that then yes don't get a Shorai. and I mean who wouldn't want the excuse of driving the NSX at least once a week lol

I don't drive mine weekly or use a tender. My shorai is relatively old and works great. I always install a quick release battery cutoff switch. If I let it sit, I simply just hit the cutoff switch. There is no negative drawbacks for me with this, doesn't change my radio stuff or any long term fuel trim curves since I'm running a standalone computer.

 

[bonhamsurf]

I need to find my sheet from Toledo Scale but I weighed in at 2745 lbs a few years ago when I had to get mine weighed for Hawaii DMV

Sent from my SM-G973U using Tapatalk

 

[relapse]

A/C and its components and most lines weigh ~42lbs (~19kg). Not included is the longest line (forget what it’s called) but I doubt it’s more than 2lbs.


My car in its lightest configuration (Taitec GT-009 exhaust, no passenger seat) with a full tank of gas is now ~2650lbs (~1202kg).

 

[nsxsupra]

I am back in another NSX. It has been a week. This is what I have done so far. The weight data should be pretty dead on accurate, anything else I miss or suggestions will be greatly appreciated. I will go back and read all the post on this thread to see if I miss anything. Because I already have other really high power cars, I don't want a lot of power for the NSX. But for sure am looking at options of adding 100hp via FI.

At current stage, it is already a huge difference compare to when I took delivery of bone stock 03 NSX. The car simply does everything better with the weight removed and tiny power gain. It really is what made this car so special.

Currently I focus on what is most efficient first then move onto more difficult ones:

Weight reduction done so far:

Spare tires -29.4lbs
Spare tires mounting bracket -2.45lbs
Air compressor + Jack -9lbs
Engine Cover -25.5lbs
Windshield wiper and motors -20lbs
Windshield wiper fluid ~3lbs (extracted more than 2 large drink size)
Total Free=-98.4lbs

Exhaust 27-44= -17lbs (Pride V2, did not go Titanium mainly due to turbo is possibility)
Battery 4.8-43= -37.2lbs (Shorai Lithium Ion battery)

Pride High Flow Cats 12-22= -10lbs

Total so far: -162.6lbs

Others weight reduction being considered:

Volk Racing CE28N

17x7.5": 13.8 lbs

17x9.0": 14.8 lbs


Yokohama Advan A052 215/40R/17 19lbs vs oem Neova AD08R 21lbs

Yokohama Advan A052255/40R17 23lbs vs oem Neova AD08R 27lbs


OEM 02~05 wheel weight:

17x7 17.35 lbs

17x9 20lbs

3.55+5.20=8.75 x2=17.5lbs total weight saving from CE28N

Horse power/Weight formula: (old weight)/new power to weight ratio

 

[RYU]

[MENTION=11309]nsxsupra[/MENTION] - replacement of front bumper beam is big. You already have an alum rear beam so not such a big savings there. Though there are CF versions made of both.

Seats is another one.

 

[MrHugo]

Exhaust 27-44= -17lbs (Pride V2, did not go Titanium mainly due to turbo is possibility)
Battery 4.8-43= -37.2lbs (Shorai Lithium Ion battery)

No, don't turbo it.....

 

[Honcho]

No, don't turbo it.....

Agree...and he should get that Ti muffler!

This is one of my all time favorite threads on Prime. By my own chart, I'm close to 2,800. I'll post up a full accounting once the project is done.

 

[MrHugo]

I took out the broken radio dead weight and lose a whopping 5 pounds! Still have music via Bluetooth module and volume knob inside ashtray door. Install new shift boot and coin tray while I was at it.

 

[mrcarnage]

Should be in the 2250-2300lb range imo when done
k24 turbo with a DSG transmission
https://www.instagram.com/p/CY9QlOgLqoR/?utm_medium=copy_link

 

[charlee]

Have been putting it off for years and finally did the EPS to manual steering swap.

Manual steering is not bad at all. Very much like my MR2 back in the day.

Still dieting after 20* years of ownership.

 

[Honcho]

Have been putting it off for years and finally did the EPS to manual steering swap.

Manual steering is not bad at all. Very much like my MR2 back in the day.

Still dieting after 20 years of ownership.

I did it too and the manual is fine to me- even in the parking lot with the NSX-R diff.

 

[charlee]

I did it too and the manual is fine to me- even in the parking lot with the NSX-R diff.

Where did you get your manual rack? How much did you pay?

Trying to decide if I should sell will my perfectly functional EPS.

I’ve collected so much parts over the years and it’s one less thing I need on the shelf.

 

[Honcho]

Where did you get your manual rack? How much did you pay?

Trying to decide if I should sell will my perfectly functional EPS.

I’ve collected so much parts over the years and it’s one less thing I need on the shelf.

Exchanged it for my non-working EPS from NSX Rack Repair.

 

[TANTO]

Owner of a 92 since 93, 25k miles with 5 track days at mid-ohio. A cold dead hands car for me. My goal is to make it as simple as my go-kart from my youth. Don't have emissions test. Still have AC. My milling machine loves to carve on NSX parts and i have the engineering background to do it safely. Feel free to ask for clarifications. Here is my current status: All parts removed were carefully weighed and subtracted from OE 3010.

ITEM	SAVINGS IN LBS
SPARE TIRE	31​
JACK	4​
TIRE COMPRESSOR	3.25​
R STEERING WHEEL CONVERSION	10.2​
CF REAR BUMPER BEAM REPLACEMENT	17.8​
CF FRONT BUMPER BEAM REPLACEMENT	15.4​
CRUISE CONTROL REMOVAL	4.5​
TCS REMOVAL	3.2​
SRS REMOVAL	5.91​
SRS WIRE HARNESS	1.44​
FRONT LICENSE PLATE FRAME DELETE	0.7​
WINDSHIELD WASHER TANK DELETE	1.4​
WINDSHIELD WIPER ASSEMBLY DELETE	15.3​
TIRE CRADLE DELETE	2.5​
ODESSY 925 BATTERY	7.1​
FABRICATED BATTERY MOUNT REPLACEMENT	1​
HEADER REPLACEMENT (COMPTECH)	10​
CAT REMOVAL	17​
EXHAUST REPLACEMENT (HKS)?????	15
R PARTITION WINDOW	4.2​
ENGINE COMPARTMENT FAN REMOVAL	2.4​
TCS STEP MOTOR REMOVAL	1.25​
ENGINE/TRANNY REMOVAL BRACKETS	0.72​
FIREWALL SOUND INSULATION	10.25​
CF SIDE VENT REPLACEMENT	4.2​
HEADLIGHT SKELETONIZATION	2.3​
ABS LATE MODEL CONVERSION	14.5​
ABS CUSTOM BRACKET	2​
ECU BRACKET SKELETONIZATION	1.6​
POWER ANTENNA REMOVAL	2.1​
FIREWALL COVER PANEL REPLACEMENT FOR MORE SOUND TRANSMISSION	0.5​
CF ENGINE COVER REPLACEMENT-PERSONAL DESIGN	7​
COMPTECH CF INTAKE SNOUT	1​
BRAKE SPLASH SHIELDS	3.2​
FRONT A-ARM SPLASH DEFLECTORS	0.5​
CARPET MATS (MAY NOT BE VALID ?	6.1​
TOE LINKS	ADD .7
MISC WIRING	0.7​
ENGINE HATCH AJAR SWITCH REMOVAL	0.5​
HOOD AJAR SWITCH REMOVAL & LATCH MODS	0.3​
CIGARETTE LIGHTER REMOVAL	0.25​
CD PLAYER DELETE	10​
AUDIO SYSTEM DELETION	19.8​
SKELOTONIZE SUB COVER	0.23​
SKELOTONIZE KNEE BOLSTER UNDERCOVER	0.55​
IMOBILIZE STEERING COLUMN TELESCOPING	0.19​
SKELOTONIZE STEERING COLUMN LOWER COVER MOUNT	0.4​
SKELOTONIZE STEERING COLUMN LOWER COVER	0.59​
HATCH STRUT REMOVAL	1.2​
RECARO CARBON FIBER SEAT CONVERSION	28​
O.E. 3010 LBS MINUS 249.53 = CALCULATED WEIGHT	2717.5​

 

[Superhatch]

Owner of a 92 since 93, 25k miles with 5 track days at mid-ohio. A cold dead hands car for me. My goal is to make it as simple as my go-kart from my youth. Don't have emissions test. Still have AC. My milling machine loves to carve on NSX parts and i have the engineering background to do it safely. Feel free to ask for clarifications. Here is my current status: All parts removed were carefully weighed and subtracted from OE 3010.

That break down really shows how all the small things really add up. Everything 2lb and under came to 23 lb total. Pretty cool to see it like this.

 

[Honcho]

Nice @TANTO395 !

Figure I should add my info now that the S-zero project is complete. Only thing yet to install is the rear partition glass. The charts are from when I thought I would build the car in stages, but of course I ended up doing it all at once. Should be sitting right around 2,650 lbs/1,200 kg. For comparison, the real S-Zero is 1,270 kg. I think the -70kg makes up for having a 3.0 instead of a 3.2.

 

[RyanRA]

R STEERING WHEEL CONVERSION

10.2

Wow 10lbs saved with this? Airbag deleted, cruise control deleted, what else?

 

[Honcho]

R STEERING WHEEL CONVERSION

10.2

Wow 10lbs saved with this? Airbag deleted, cruise control deleted, what else?

10.3 by my scale. Steering wheel, airbag and cable reel.

 

[bogle]

Those spreadsheets are fantastic. One thing maybe not accounted for in there, though, is the damper/spring weight. I see Honcho has 59lbs for the factory suspension.

My old tein RAs were 43.5lbs all in (front 12.25lb each, rear 9.5lb each) and the MCS/swift setup is 26.4lbs total (6.6lb each). Honcho, your fronts are probably lighter with the 6” springs. 32lb savings in one go, not bad.

(Edit: nvm, I see the mcs on Honchos list now. And I fixed my dumb math)

 

[kevie_p]

Wow! just amazing guys. My goal is 2800lbs