My Car is on a Diet.

[Shelburne]

So, I am fairly certain I adamantly stated that I was NOT going to do this...and well, here we are. So if you are like me, and feel that all of those fancy parts that came with the car that you paid for must be removed and weighed, please - join the aid group.

Without ado, I present you with weights!

Front Seats: 55lbs (each)
Rear 40 Seat: 13lbs
Rear 60 Seat: 24lbs
Rear Bottom Seat: 15lbs
Rear Bolsters: 2.5lbs (each)
Rear Load Floor Supports: 11oz (each)
Trunk Carpet (Full): 12.5lbs (Note: 2019+ are a two-piece design)
Trunk Load Floor: 3.5lbs
Rear Door Panels: 7lbs (each)
Subwoofer/Amplifier Assembly: 8.5lbs (Primarily in the Subwoofer)
Rear Seatbelt Retractors: 2.6lbs (each)
Front Trunk Storage Compartment: 15lbs (w/ hardware)

And weights graciously provided by others:

Windshield: 38lbs
Roof/Top Glass: 27.4lbs
Front Door Glass (Single Pane): 9.5lbs (Each)
Rear Door Glass: 7.6lbs (Each)
Trunk (Steel): 26.9lbs
12V Battery: 30lbs

By my calculations, by removing the 2nd row and trunk interior trim, the frunk, replacing the 12V battery with a lithium unit, replacing the top glass with lexan/polycarbonate, and replacing the front seats with some lightweight fixed-back seats, you can easily drop more than 200lbs.

Not to mention, there are gains to be had from lightweight rotors and suspension components, though a lot/all of that I have gained back with cooling components. More to come!



If you have weights please add them!

My wife just read this and said, "Why would I go to all that effort when I can save even more weight by leaving you at home." I can't argue with that.

 

[MountainPass]

Sound deadening goop in the rear + butyl tape - 4lbs, 2oz. Worth it? Who knows.

View attachment 638341 View attachment 638342

I would kill to take 4lbs out of our Z with only a heat gun. The amount of hole saws we went through last month was crazy!

 

[MasterC17]

I would kill to take 4lbs out of our Z with only a heat gun. The amount of hole saws we went through last month was crazy!

You quickly reach the stage of "diminishing returns"!

 

[Mash]

You quickly reach the stage of "diminishing returns"!

You didn't even start changing all fasteners to titanium and subframes to tubes.

 

[MasterC17]

Down to 3,880lbs! I removed 228lbs, which means I've added back in roughly 50-60lbs of cooling modifications (including fluids which are pretty heavy), including a few other small add-ons (MPP Brace, CPC, Party Box, MoTeC Dash, Front Lip Spoiler, etc).

At this point, I still see the trunk and the top glass as the best opportunities to drop weight. Should be able to close in on 3,850 which I would be pretty happy with - about a 200lb drop from stock.

 

[MasterC17]

Quick corner balance, close enough for this weekend. Totals with me in the car.

 

[Mash]

Quick corner balance, close enough for this weekend. Totals with me in the car.

View attachment 645610

Now you can't change your or car weight - keep it that round!

 

[MountainPass]

Now you can't change your or car weight - keep it that round!

4000lb on the dot, no more cheeseburgers!

 

[MasterC17]

In collaboration with MPP, we've got some OMP fixed-back seats going in using some custom brackets that adapt to the OE sliders!

Also picked up a set of Titanium Lug Nuts from hyevolt.com - less than 50% of the weight of OEM, these save 1.2 pounds of rotational mass at an affordable price!

 

[Mash]

In collaboration with MPP, we've got some OMP fixed-back seats going in using some custom brackets that adapt to the OE sliders!

View attachment 653433

Also picked up a set of Titanium Lug Nuts from hyevolt.com - less than 50% of the weight of OEM, these save 1.2 pounds of rotational mass at an affordable price!

View attachment 653434

Cool.
So you can use it to adjust front-back and seat angle? How much higher it is vs stock? And how do you plan to use 3pt belt, I don't get it?

 

[MasterC17]

Cool.
So you can use it to adjust front-back and seat angle? How much higher it is vs stock? And how do you plan to use 3pt belt, I don't get it?

I only kept the forward-backward adjustment. Can sit lower than stock if you desire. 3-Point is used as pictured.

 

[rc0310]

Any errors/warning after you install the New bucket seat?

I'm looking to put one in mine too but don't want to have problems with airbag.

Build looks awesome

 

[Feathermerchan]

Who needs airbags? Make it lighter without.

 

[rc0310]

Who needs airbags? Make it lighter without.

It's my daily driver, so I'd prefer to have airbags for both myself and my passengers

 

[Candleflame]

So, I am fairly certain I adamantly stated that I was NOT going to do this...and well, here we are. So if you are like me, and feel that all of those fancy parts that came with the car that you paid for must be removed and weighed, please - join the aid group.

Without ado, I present you with weights!

Front Seats: 55lbs (each)
Rear 40 Seat: 13lbs
Rear 60 Seat: 24lbs
Rear Bottom Seat: 15lbs
Rear Bolsters: 2.5lbs (each)
Rear Load Floor Supports: 11oz (each)
Trunk Carpet (Full): 12.5lbs (Note: 2019+ are a two-piece design)
Trunk Load Floor: 3.5lbs
Rear Door Panels: 7lbs (each)
Subwoofer/Amplifier Assembly: 8.5lbs (Primarily in the Subwoofer)
Rear Seatbelt Retractors: 2.6lbs (each)
Front Trunk Storage Compartment: 15lbs (w/ hardware)

And weights graciously provided by others:

Windshield: 38lbs
Roof/Top Glass: 27.4lbs
Front Door Glass (Single Pane): 9.5lbs (Each)
Rear Door Glass: 7.6lbs (Each)
Trunk (Steel): 26.9lbs
12V Battery: 30lbs

By my calculations, by removing the 2nd row and trunk interior trim, the frunk, replacing the 12V battery with a lithium unit, replacing the top glass with lexan/polycarbonate, and replacing the front seats with some lightweight fixed-back seats, you can easily drop more than 200lbs.

Not to mention, there are gains to be had from lightweight rotors and suspension components, though a lot/all of that I have gained back with cooling components. More to come!



If you have weights please add them!

how much does this improve 0 to 60 mph out of interest.

 

[fastp3d]

Iono...maybe it’s the view but the launch at 2:57 mark looks pretty fast. Stripped down UP pikes peak car. If you’re not rocking the cage then it’s more savings.

For the record, the UP PP car weighed in at 3999lbs with randy in it. I would say an estimate of 600-700lbs of OE components were removed but the full cage and other misc items brought the curb weight back up. All windows are also lexan except the back window.

 

[MasterC17]

Any errors/warning after you install the New bucket seat?

I'm looking to put one in mine too but don't want to have problems with airbag.

Build looks awesome

Thanks! No errors, but it does require a custom wiring harness to do that. @MountainPass may be able to give more information on release date.

 

[Noodles]

if you remove the car thats a 4,000 lb savings

 

[butterscotch]

Purely out of curiosity, if you remove 200lbs of weight from stock car, does that create faster 0-62 mph time ? It should right? same power, less weight = faster sprint?

 

[Candleflame]

Purely out of curiosity, if you remove 200lbs of weight from stock car, does that create faster 0-62 mph time ? It should right? same power, less weight = faster sprint?

yes that was my question. it will improve 0 to 60mph time but question is how much. i,d imagine maybe 0.1 or 0.2s.....