The 370Z Weight Reduction Thread

[RCZ]

The point of this thread is to create a list of the weights of different stock parts and aftermarket parts for everyone's reference. People can post up what they are doing to reduce weight and ANY information about the weight changes achieved. The aim is to create an extensive list. I'll keep track of this thread as much as possible to keep the list up to date.

LBS/KG CONVERTER TOOL


STOCK PARTS:

Engine:
Full Stock Exhaust: 49.3lbs (25.4kg)
Stock Cat: 21lbs (9.53kg)
Stock Battery: 35lbs (15.88kg)

Stock Exhaust

Muffler Section - 26.8lbs (highly inefficient)
Y-Pipe - 11.6lbs
Resonated Y-Pipe - 15.6lbs
Total: 54.0lbs



NISMO Cat-back 'H' Pipe [Midpipe] = 17.2 lbs
NISMO Cat-back Rear Muffler Section [Can] = 35.2 lbs
NISMO Cat-back Front 'Y' Pipe [bolts to cats] = 13.6 lbs
Suspension:

Stock Rear Camber Arms: 2lbs (0.91kg)

Body:

Rear Under bumper Charcoal Filter Cover/Shield = 0.4 lbs
Hood 16lbs

Interior:
Base/NISMO Seat with integrated SRS airbag = 42.4 lbs
Airbag assembly from SRS Seat = 1.6 lbs
Base/NISMO Headunit/Radio = 2.6 lbs

Touring Package Leather Heated Seats (TPH): 47lbs (21.32kg)
Touring Package Bose Subwoofer: 8lbs (3.63kg)
Tools & Mats: 7lbs (3.18kg)
Privacy shade thing out of the hatch area 3lbs
Trunk Plastics - 15lbs
Hatch Weight - 2 lbs

Miscellaneous:

- Sport Package Wheels/Tires -
Front Wheels (Sport Package) + Stock Bridgestone RE050A (245/40/19): 52.2lbs (23.68kg)
Rear Wheels (Sport Package) + Stock Bridgestone RE050A (275/35/19): 56.8lbs (25.76kg)
Front Wheels (Sport Package): 23.2lbs(10.52kg)
Rear Wheels (Sport Package): 23.8lbs (10.8kg)
Front Stock Bridgestone RE050A (245/40/19): 29lbs (13.15kg)
Rear Stock Bridgestone RE050A (275/35/19): 33lbs (14.97kg)

Emergency Spare Wheel/Tire: 35lbs (15.88kg)

Stock Lug nuts 3lbs


AFTERMARKET:

Engine:

- Exhaust -
MCR Crimson Titanium Exhaust: 29.5lbs (13.4kg) | Reduction: -19.8lbs (-8.9kg)
Power House Amuse RS Silent Exhaust (STTI): 30.3lbs (13.74kg) | Reduction: 19.0lbs (8.62kg)

STILLEN Exhaust
Muffler Section - 39.6lbs (proven huge hp gains)
Y-Pipe - 11.3lbs
Resonated Y-Pipe - 14.4lbs
Total: 65.3lbs

Difference: +11.3lbs and 18whp

~Berk exhaust:
-Muffler: 32.2lbs
-X-pipe: 12.2lbs
-Resonators: 8.8lbs each (17.6lbs total)
-Bolts & Gaskets: 1.2lbs
Total: 63.2lbs

~Fast Intentions exhaust:
-Whole exhaust with SS mufflers: 47lbs
-Whole exhaust with Carbon fiber mufflers: 41lbs

~Fast Intentions Long Tube headers:
-Whole piece: 21lbs (Per thread a recorded weight loss of 17lbs total)
Suspension:


Body:


Interior:

- Reclining Seats -
Recaro Speed: 30.9lbs (14.02kg) | Reduction: (TPH) -16.1lbs (7.3kg)
Recaro Sports: 37.5lbs (17.01kg) | Reduction: (TPH) -9.5 (4.31kg)
Bride LowMax GIAS: 24lbs (10.89kg) | Reduction: (TPH) -23lbs (10.43kg)
Bride Brix II: 45lbs (20.41kg) | Reduction: (TPH) -2lbs (0.91kg)
Bride Guga: 29.5lbs (13.38kg) | Reduction: (TPH) -17.5lbs (7.94kg)

- Racing Non-Reclinable -
Bride ZETA III: 26lbs (11.79kg) | Reduction -21lbs (9.53kg)

Miscellaneous:

- Batteries -
Braille Light Weight Battery B129 (Recommended Race only): 9lbs (4.1kg) | Reduction: 26lbs (11.79kg)
Braille Light Weight Battery B14115 (Recommended Race only): 11.5lbs (5kg) | Reduction: 23.5lbs (10.66kg)
Braille Light Weight Battery B14115: 15lbs (6.8kg) | Reduction: 20lbs (9.07kg)
Odyssey Light Weight Battery PC680: 14lbs (6.35kg) | Reduction: 21lbs (9.53kg)

Footnotes:

(TPH) = Touring Package Heated

Useful Links

WHEELWEIGHTS.NET
Braille Battery

[Endgame]

Excellent thread. I will be watching and contributing....

[Namir]

Nice, this looks like a useful thread that will hopefully get stickied.
Maybe for those who have bought their 370Z already, we can get a weight on spare tire and jack/tools. Thats one of the easiest places to drop weight.
Also, some one should try to weigh the stock wheels and tires, as this is another good place to save weight. My estimates would be 24-25 lb front wheels and 27-28 lb rear wheel but I'm just guessing.

[g35lamd]

For anybody interested in what wheels to purchase: WHEELWEIGHTS.NET

[Crash]

I'm going to probably leave the stock 19in wheels, (the weight isn't that bad) but the tires weigh 30 Lbs each! Those have got to go!

[RCZ]

Ninja edit

[sbkim]

Originally Posted by Namir

Nice, this looks like a useful thread that will hopefully get stickied.
Maybe for those who have bought their 370Z already, we can get a weight on spare tire and jack/tools. Thats one of the easiest places to drop weight.
Also, some one should try to weigh the stock wheels and tires, as this is another good place to save weight. My estimates would be 24-25 lb front wheels and 27-28 lb rear wheel but I'm just guessing.

Any update on the weight of stock 18" and 19" wheels?

[TomatoEvo]

Oh hell yeah. I'm glad to see this thread here!

[M.Bonanni]

I will reserve my spot on this thread for when I get my 370Z. I have a set of scales and a box full of tools!

[RCZ]

Originally Posted by TomatoEvo

Oh hell yeah. I'm glad to see this thread here!

Originally Posted by DDMotorsports

I will reserve my spot on this thread for when I get my 370Z. I have a set of scales and a box full of tools!

That's what I wanted to hear!

[Namir]

Originally Posted by sbkim

Any update on the weight of stock 18" and 19" wheels?

Here are the weights of the stock Sport package wheels/tires (19")
Fronts



Rears

[frost]

Good stuff. Is the weight of one of the exhaust systems incorrect? The weight savings should be 19.8 lbs, right?

[sensi09]

According to tirerack, for the Bridgestone RE050A, a 245/40/19 weighs 29lbs and the 275/35/19 weighs 30lbs.

So the front wheel weighs, 23.2lbs and the rears weighs 26.8lbs.

Perhaps the scales are off, but Nissan did advertise these wheels as 20% lighter. Not sure which wheels they were comparing to, but that doesn't look to hold true from this info.

[sensi09]

On the bridgestone website, the 275/35/19s are listed at 33lbs.

Sizes and Specifications
Tire Specs for Bridgestone Potenza RE050A

[TomatoEvo]

^^^ Thanks for doing that sensi09, rep for you for being proactive. I was just about to post that info up as well.

What this means boys and girls is that a set of CE28's in the same sizes will probably save us around 20 lbs total. In 18's we'll probably see a 25 lbs saving. (Just a rough estimate, so plz correct me)