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Old 06-05-2012, 03:05 PM   #1
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Official Component Weights & Weight Reduction Thread

Hi Guys,
I'd like to start an official weight reduction thread. I put it in this section because I figured most people interested in weight reduction were going to be those tracking their car. If the mods deem it more appropriate elsewhere, by all means please move it.

I'd like to break it up by vehicle area, and hopefully come back and consolidate the data occasionally so it's all in one place. I've broken it up along the same lines as the forum is segmented. I'm thinking we can collect all OEM data here, as well as weights for aftermarket parts. That way people can quickly reference it to make decisions when making modifications, without having to dig all over the place in separate areas of the forum.

I'll start it off with some data we've gathered on the OEM components. I have more on the way as we pull our project car BRZ apart. I took all weights on one of our postal scales, and have included photo validation where possible. I'd encourage everyone else to do the same to prevent discrepancies and arguments. Let me know what you guys think. Thanks.

Complete Car
OEM BRZ Premium 6MT, full tank of gas, as delivered from dealership= 2,750 lbs.


Wheels/Tires

OEM 17" wheel & tire combo= 41.4 lbs.


OEM Lug nuts (5 pieces, or one wheel set)= 0.2 lbs.


Brakes
OEM front Brake pads= 1.8 lbs.


OEM front brake dust shield and three bolts= 0.4 lbs.


OEM front brake disc= 17.0 lbs.


OEM front brake caliper bracket= 3.8 lbs.


OEM Front Brake Caliper= 7.8 lbs.


OEM Rear brake caliper= 2.8 lbs.


OEM rear brake caliper bracket= 3.0 lbs.


OEM Rear brake disc= 13.2 lbs.


OEM rear brake pads= 0.8 lbs.


Suspension and Chassis


Engine, Exhaust, Drivetrain



Other under hood
OEM battery= 29.6 lbs.


OEM battery tie-down= 0.4 lbs.


Super B 10P Lithium-Ion Battery= 3.9 lbs.


Interior

Driver Seat= 43.6 lbs.


Passenger Seat= 39.2 lbs.

Rear seat bases (2)= 6.2 lbs.


Rear seat back (1-piece)= 15.0 lbs.


Rear side plastic panels= 3.0 lbs. (driver and passenger are same)


Front floor mat= 1.2 lbs.


Rear floor mat= 0.4 lbs.


Cup holder insert= 0.4 lbs.


B-pillar plastic (covers seat belt attachment)= 0.4 lbs.



Exterior, body panels, lighting
OEM Front plastic fender liner= 1.2 lbs.


OEM front driving LED lights= 0.2 lbs.


Miscellaneous
OEM spare tire with liner foam= 25.8 lbs.


OEM trunk tools, jack, tow hook= 5.8 lbs.


OEM trunk rug/liner mat= 2.4 lbs.

Owner's Manual= 2.8 lbs.


OEM front license plate bracket and hardware= 0.4 lbs.

Last edited by JRitt; 06-11-2012 at 08:37 AM. Reason: Added more parts
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Old 06-05-2012, 03:20 PM   #2
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I love you! lol. Ill be spending a lot of time here. i plan on ditching a lot of the fat once i purchase mine!!!! great job keep it coming!!!!!
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Old 06-05-2012, 04:08 PM   #3
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Shit, man. You're not going to have much of a car left at this rate.
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Old 06-05-2012, 04:21 PM   #4
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Excellent....Great WORK....with the Stock Wheel/tire setup @ 41.x lbs...my 17x9 with 245's ..are 45lbs...I can live with that..

Bill
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Old 06-09-2012, 08:27 AM   #5
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I will be able to add to this considerably myself today... as there will be some things I will be doing to the car...

Bill
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Old 06-09-2012, 10:18 AM   #6
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Great thread. We found similar results. Removing jack, tools, spare tire, rear seat back, rear seat bases, rear trunk mat & pass floor mat dropped 70 lbs.
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Old 06-10-2012, 12:02 AM   #7
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The Good news is ... mine weighs the same as yours...



Last edited by Scooby South; 01-08-2013 at 11:15 PM.
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Old 06-10-2012, 12:05 AM   #8
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mine on the scales weight 2669 with less than a quarter tank of gas... no trunk Junk...and my new wheels/tire combo..

Bill
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Old 06-11-2012, 04:42 AM   #9
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good work,
light weight battery and spare removal are an easy practical start for an almost 30kg drop. half way to a noticeable gain, i.e. a passenger..
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Old 06-11-2012, 05:04 AM   #10
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The below Comment is just an observation, not directed towards any person or groups of persons.

I've always found it humorous when you get someone worried about shaving every last ounce from a vehicle but they don't have any issue with ordering the Super Sized fries with an Extra large shake when they go out for their mid-morning snack.

Point of example: Back when I first got into AutoX'ing my xA there was a guy who swapped a bunch of smaller items (Like the stock stereo) to save about 4 LBS. He proceeded to tell us that if we didn't do likewise we were putting ourselves at a disadvantage because our vehicles weighed more. Meanwhile this guy must have weighed at least 250 lbs and ate like a ravenous goat.

My point being yes, weight savings is a good thing, but you have to look at it as a % of the vehicles running weight with driver. If you weigh 250 lbs removing 4lbs is not going to have as much of an effect as the same weight reduction for someone who weighs 150 lbs. Or to quote someone else in that thread "You would shave more weight by going on a diet than getting rid of your Stock Headunit"

Anyways crimespree's comment about a "noticeable gain" made me remember that thread.

Last edited by Ashe; 06-11-2012 at 05:05 AM. Reason: speeling
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Old 06-11-2012, 08:33 AM   #11
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Quote:
The Good news is ... mine weighs the same as yours...
Good to verify our scale is reading at least somewhat properly!

Quote:
mine on the scales weight 2669 with less than a quarter tank of gas... no trunk Junk...and my new wheels/tire combo..
Nice. Definitely post up all your specifics. Thanks!

Quote:
good work,
light weight battery and spare removal are an easy practical start for an almost 30kg drop. half way to a noticeable gain, i.e. a passenger..
We dropped 25 lbs. with our lightweight lithium-ion battery. We're finishing up a custom mount for it now. I'll add a pic and weight to my pics above. Race buckets are going to be another very nice reduction. I weighed an old Sparco Roadster seat that I had in my Z06...weighed in at 16 lbs. for the fiberglass version. We're making some custom lightweight aluminum seat rails that will only be a few pounds. Overall, a 20lb. drop in seat weight (per side) seems likely...so that's another 40 lbs. that can be shed.

It shouldn't be a big problem to get down into the 2550 lbs. range without ripping the car to shreds. That's about what my '98 Integra Type R weighed, and that car had very similar HP. These cars are going to be very lively at that fighting weight, even on a stock (and reliable) engine. Therein lies the beauty. I keep telling myself that this is going to be the RWD Type R I always wanted, or what I wish my NA Miata was...a particularly nice balance of power and weight.
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Old 06-12-2012, 09:58 PM   #12
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big props to JRitt for this amazing thread, i can see the parts and proof of the weight claims, really a master piece of information if you take your 2751lbs number for a stock full tank of gas you can achieve 2550 or lower pretty easily and have a blast with it at that weight this really has solidified my desicion on getting this car i'm eagerly waiting from the call from my local dealer to pick it up i can't wait...

i know this car was no designed to drag and I actually don't visit the drag strip much, but i can see how i can have a good night with some decent times at one with just some simple weight reduction and just run with 1/4 tank of gas and not even have any engine modifications
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Old 06-14-2012, 07:41 PM   #13
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Amazing. Made it a whole lot easier for the rest of the guys on forum.
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Old 06-14-2012, 08:08 PM   #14
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Good work!!
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