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Thread: Unofficial weight reduction thread

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    Charter Platinum nsxsupra's Avatar
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    Unofficial weight reduction thread

    Please post your rough estimate. Weight in sheet to back it up is a big plus. It is ok to update your #s if you found more accurate weight for the parts. If you have weighted parts that have not yet been listed on the FAQ section, please post them here as well.

    92 NSX curb weight 3010lbs.

    Free weight reductions (confirmed weight data):
    spare tire -29.4lbs
    tool kit/jack/air pump -15lbs
    engine cover -15lbs
    Toe Hook -3lbs

    Non-free weight reductions with real weight data (Oem weight - new part weight)
    Taitec GTLW -26lbs (44-18)
    Comptech Headers -12lbs (32-20)
    Downforce Wing carbon fiber NSX-R wing -7.2lbs (14-6.8)
    Procar carbon fiber type r hood -6.8lbs (15-8.8)
    Bilstein shocks -5.6lbs (oem shocks=5.6lbs each, Bilstein=4.2lbs each)
    CTSC +60lbs
    OEM intake manifold assembly/alternator/cover+plates/etc -45lbs (offset most of the CTSC weight gain)
    Volk Racing CE/LE28N 17/17 wheels -10.92lbs OEM 15/16 wheels (15.2lbs+18.86)x2 - LE28N17/17(13.8lbs+14.8lbs)x2=10.92lbs
    Toyo T1-R lightweight tires F: 205/40/17 R: 255/40/17-8.6lbs 94.6lbs-86lbs
    02 OEM headlight conversion -23lbs
    Carbon Fiber licence plate frame -.5lbs (oem weight 10oz-2oz=8oz)
    Windshield wiper motor, blade delete. Fluid drained -25lbs

    Not yet 100% confirmed (rough estimate)
    OEM steering wheel/airbag delete -20lbs (extremely conservative estimate)
    Momo steering wheel + quick release +10lbs
    Tein S Tech springs -5lbs (oem weight 7lbs per spring, Tein S-tech is light but need exact #s)


    Estimated weight after diet with all fuilds in full------------------------2821.5lbs
    --------------------------------------------------------------------------------------------------------------------------------




    Please feel free to correct me if you see anything that is incorrect and if you have weighted the item. Tire weight is something many doesn't mention. Since this is weight reduction thread I will post some tire weight info here as well:

    Comfirmed Weight of OEM Potenza tires:
    15/16 94.6lbs total for all 4 tires
    16/17 98lbs total for all 4 tires

    Toyo T1R (lightest tire that I know of and sizes that I have tried on both oem and aftermarket wheels)
    205/45/16 19lbs
    205/40/17 19lbs
    245/40/17 23lbs
    255/40/17 24lbs
    Last edited by nsxsupra; 02-02-2007 at 05:08.

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    Charter Patron 2slow2speed's Avatar
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    Re: Unofficial weight reduction thread

    Nice diet on your NSX, with the weight reduction you probably don't need the CTSC anymore

    BTW: At least on the NSX-T the difference between having the engine cover vs not having it is huge if you are attuned to your car, I noticed the difference in handling on my NSX when I put the stock engine cover back on.

    It's probably because the engine cover sits pretty high on the car which magnifies the effect.

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    Charter Patron ediddynsx's Avatar
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    Re: Unofficial weight reduction thread

    Hey Jason,

    Is there a place where we can weigh our cars? I would be curious to see how much my car weighs after dropping the weight I wanted to.
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    Re: Unofficial weight reduction thread

    Quote Originally Posted by ediddynsx
    Hey Jason,

    Is there a place where we can weigh our cars? I would be curious to see how much my car weighs after dropping the weight I wanted to.
    Eddie, the other night you were telling me that you knew of a place that did corner balancing... have your car weighed there.
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    Charter Patron ediddynsx's Avatar
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    Re: Unofficial weight reduction thread

    Quote Originally Posted by nsx1
    Eddie, the other night you were telling me that you knew of a place that did corner balancing... have your car weighed there.

    Thats right I can take it to Darin! but he is super busy all the time.....well I will do it in the future after I shedded all the weight i want.
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    Registered Vendor scorp965's Avatar
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    Re: Unofficial weight reduction thread

    Quote Originally Posted by nsxsupra
    Probably EMI (Erik M) at Huntington Beach, same guy who did Danny's champion race car. Group weight in NSX meet would be nice.
    Such an event would probably have a great turn out... fwiw someone on a bmw forum claimed you could just drive into a 'truck scale' on the side of the freeway and obtain your weight that way.
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    Re: Unofficial weight reduction thread

    Quote Originally Posted by nsxsupra
    John, I don't know about that man, you go first, if everything is ok, I will follow
    perhaps if I had an airhorn installed first
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    Charter Platinum nsxtacey's Avatar
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    Re: Unofficial weight reduction thread

    Quote Originally Posted by scorp965
    perhaps if I had an airhorn installed first
    i have an airhorn, i'll have to try it oneday at a weigh station

    anyone know how much the na2 oem header and exhaust are? When i had them taken off I noticed they were much heavier than the comptech headers and gt-one exhaust

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    Re: Unofficial weight reduction thread

    Quote Originally Posted by ediddynsx
    Hey Jason,

    Is there a place where we can weigh our cars? I would be curious to see how much my car weighs after dropping the weight I wanted to.
    I actually do it all the time.

    If you don't have a set of Longacre scales... there is always the truck weigh stations when they are closed or set to bypass off the interstate highways. Up here they are accurate/calibrated to within 20lbs increments usually. I'm always trying to drop it that extra notch. Just pull in, fill up (everyone should have a full tank to keep results comparable), step out (no payload), and let us know... ideally on holidays, weekends or late at night... so as to avoid the weird looks... they always leave them on.

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    Re: Unofficial weight reduction thread

    In Kansas we just go to the nearest grain elevator.

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    Re: Unofficial weight reduction thread

    Quote Originally Posted by nsxsupra
    Please post your rough estimate. Weight in sheet to back it up is a big plus. If you have weighted parts that have not yet been listed on the FAQ section, please post them here as well.

    My weight reduction progress. 92 starting weight 3010lbs
    Current weight------------------------2839lbs
    Did you weigh your car with or without fuel and if so, how much ??

    Well, here is my list from another recent thread:
    http://www.nsxprime.com/forums/showthread.php?t=76630

    I cannot upload an excel-sheet with all the (possible) changes but I can list them:

    Item LBS KG
    OEM spare-tire (15", model 1991-1996) Remove -29.4 -13.3
    OEM spare tire mount Remove -2.2 -1.0
    OEM European toolkit (no pump&jack) Remove -6.6 -3.0
    OEM towhook Remove -0.8 -0.3
    OEM European foglights (pair) Remove -3.6 -1.6
    OEM Zanardi floormat set Add 6.4 2.9
    OEM Alpine 6-disc CD-player (in trunk) Add 4.3 1.9
    OEM Alpine CD-player mount Add 2.4 1.1
    OEM Honda battery 65Ah Remove -37.0 -16.8
    OEM Honda battery 45Ah Add 33.0 15.0
    OEM engine cover NSX coupe version Remove -13.9 -6.3
    Carbonfiber mesh engine cover Add 5.3 2.4
    OEM suspension 1991-1996 all wheels Remove -55.3 -25.1
    TEIN-RA suspension Add 41.7 18.9
    OEM (1991-1994) Remove -43.4 -19.7
    SoS Taitec GT Lightweight Add 18.3 8.3
    OEM headers (1991-1996) Remove -32.0 -14.5
    SoS Taitec GT headers (1991-1994) Add 19.4 8.8
    OEM front wheel 16x7 (1994-2001) Remove -33.6 -15.2
    OEM rear wheel 17x8.5 1994+ Remove -41.8 -19.0
    BBS RSII front wheel 17x8 Add 46.0 20.9
    BBS RSII rear wheel 18x10 Add 50.2 22.8
    OEM front rotor 1991-1996 11.1" Remove -27.8 -12.6
    Stoptech Aerorotor front 1991-1996 Add 24.6 11.2
    OEM side air-intake (set) Remove -5.0 -2.3
    OEM air intake tube Remove -1.3 -0.6
    OEM Rear Toelinks rear Remove -2.1 -1.0
    Dali Racing carbonglass air-intake Add 1.0 0.5
    Dali Racing radiator shield Add 2.1 1.0
    Cantrell air intake Add 4.5 2.0
    SOS Non-compliance Toelinks Add 1.7 0.8
    Home made Front Underbody Cover (Type R) Add 3.2 1.5

    Total weight saved according to my calculations is 72 Lbs or 32.5 Kg.

    The current weight of the car with full tank is 2998 lbs (or 1360 Kg).

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    Registered User djdrock's Avatar
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    Re: Unofficial weight reduction thread

    Aproximately how many horsepower would around a 100 lb. weight reduction give a normally aspirated NSX, say a 1991?
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    Re: Unofficial weight reduction thread

    Quote Originally Posted by djdrock
    Aproximately how many horsepower would around a 100 lb. weight reduction give a normally aspirated NSX, say a 1991?
    Simple calc. The base NSX is 3010 lbs and 274 HP which equals to 10.99 lbs/HP

    So, reducing the weight by 100 lbs would be the same as adding 100/10.99 = 9.10 HP.

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    Registered User Floyd's Avatar
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    Re: Unofficial weight reduction thread

    Science!!!

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    Re: Unofficial weight reduction thread

    Quote Originally Posted by nsxsupra
    My starting and after weight is assuming the car is with all fluid at full level. 3010lbs-171lbs=2839lbs.

    Thank you for your #s and information. No, I have not yet weighted the car, will do so when we have chance.

    The weight info I still need for parts is:
    OEM flip up headlights, cover, motor
    OEM fixed headlights
    Tein S Tech springs each
    Ever thought about getting rid of those heavy seats?
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    Re: Unofficial weight reduction thread

    Quote Originally Posted by The Kid
    Ever thought about getting rid of those heavy seats?
    I dreamed about it, but it will never get pass lady's inspection.

    CTSC-she doesn't know yet, looks stock to her, you local guys never mention in front of her please
    wheels-what a tough battle
    02 Conversion-her favorite look and sponsored my oem bumper
    Steering wheel- why in the world did you remove airbag?
    Seats-not going to ever happen for me

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    Re: Unofficial weight reduction thread

    Quote Originally Posted by nsxsupra
    I dreamed about it, but it will never get pass lady's inspection.

    CTSC-she doesn't know yet, looks stock to her, you local guys never mention in front of her please
    wheels-what a tough battle
    02 Conversion-her favorite look and sponsored my oem bumper
    Steering wheel- why in the world did you remove airbag?
    Seats-not going to ever happen for me

    this is for you jason since you lost your manhood
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    Re: Unofficial weight reduction thread

    I have a '94 coupe, assuming stock weight of 3010lbs

    wheels -12.0lbs
    exhaust -12.0lbs
    headers -12.0lbs
    cats -22.0lbs
    stereo/cd changer - 8.0lbs
    hood -10.0lbs
    spare/bracket -32.4lbs
    tool kit -15.0lbs
    steering wheel - 5.0lbs
    engine cover -15.0lbs
    nsx-r wing - 7.0lbs

    = 150.40

    3010 - 150.40 = 2859.6 lbs

    According to this page:
    http://www.daliracing.com/v666-5/inf...ost_matrix.cfm

    the trunk tool kit is 15lbs, not 40lbs; 20lbs also seems excessive from the steering wheel/airbag - did you weigh these parts, off the car?
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    Charter Patron 2slow2speed's Avatar
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    Re: Unofficial weight reduction thread

    All of you SoCal folks should really consider replacing the battery with a smaller one given that you folks don't have to deal with cold weather, it will reduce the weight substantially and it does not cost much to do so.

    Same thing with the side scoops if you can find a reasonable cheap set, the OEM ones are boat anchors too.

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    Charter Platinum John McCain Racing's Avatar
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    Re: Unofficial weight reduction thread

    Removing the Windshield Wipers, Motor and Tank I lost 27lbs. I didn't see that one on the list. The fix is several good coats of Rain-X!

    BTW my last weigh in was 2860lbs with a 1/2 tank of gas. So closer to 2900lbs, but started at 3164lbs...

    Quote Originally Posted by nsxsupra
    I dreamed about it, but it will never get pass lady's inspection.

    CTSC-she doesn't know yet, looks stock to her, you local guys never mention in front of her please
    wheels-what a tough battle
    02 Conversion-her favorite look and sponsored my oem bumper
    Steering wheel- why in the world did you remove airbag?
    Seats-not going to ever happen for me
    Unplug the power on her seat and say it's broken. Replace it with a SPG and tell her they are cheaper than OEM. I can't tell you how many things were "broken" on my NSX and needed replacing. hehe
    Last edited by John McCain Racing; 11-12-2006 at 15:36.
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    Charter Patron nsxhk's Avatar
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    Re: Unofficial weight reduction thread

    Quote Originally Posted by 2slow2speed
    All of you SoCal folks should really consider replacing the battery with a smaller one given that you folks don't have to deal with cold weather, it will reduce the weight substantially and it does not cost much to do so.

    Same thing with the side scoops if you can find a reasonable cheap set, the OEM ones are boat anchors too.
    Really? How much do they weight?

    Henry.

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    Charter Patron nsxhk's Avatar
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    Re: Unofficial weight reduction thread

    Quote Originally Posted by John McCain Racing

    Unplug the power on her seat and say it's broken. Replace it with a SPG and tell her they are cheaper than OEM. I can't tell you how many things were "broken" on my NSX and needed replacing. hehe
    Those Recaro's are light, but the seat rails and mounts are quite heavy.

    Henry.
    Last edited by nsxhk; 11-12-2006 at 18:45.

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    Re: Unofficial weight reduction thread

    Quote Originally Posted by nsxhk
    Really? How much do they weight?

    Henry.
    Well my Odyssey 545 weighs around 15lbs vs 35lbs and the side vents only weigh 5lbs in CF.
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    Registered Vendor scorp965's Avatar
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    Re: Unofficial weight reduction thread

    I found a lightweight battery to be a hassle, it required two jumps in the 2.5 months I used my PC680, and I was always worried about it... this said, if you use a battery tender, it does save significant weight - I believe the total is in the order of approx 25lbs, after factoring in the install of a battery box. This is also somewhat of a downfall, I discovered, as it made the front end of my car seem a bit 'floaty' - I am sure this could be dialed away with coilovers, but the handling was negatively affected, despite the weight reduction, on my car (bilsteins/eibachs).
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    Charter Gold BD's Avatar
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    Re: Unofficial weight reduction thread

    This is what I came up with. Pertty sure there are errors, but close enough.

    2003 NSX -R Wannabe Berlina Black/Red Interior #126
    2008 Honda S2000 CR Berlina Black #160

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