Eh2Samuelian

I was wondering if i will see any difference in performance from removing my back seats, Does the weight make any difference?

speedjunkie_g35

Wow, really? No you won't see performance gains as all you are doing is removing a few lbs. if you have 90 hp before removing seat you will still have 90 hp after removing the seat.

Eh2Samuelian

I understand that but would the weight removal be signifigant enough to show impovement in 1/4 mile times

jbpnoman

Yes, it would improve your trap times, but becoming a better driver, or using better tires would give you a better improvement than just removing your back seats.

doood

iTrader: (1)

how bout you try it and find out? takes all of, what, 10 minutes if that?

jbpnoman

Last seat swap I did took 15 minutes. That was 15 minutes to remove the old seats, remove the old seat belts, install the new belts, and install the new seats. The seat belt assemblies are heavy - I'd almost guess that the two seat belt assemblies are heavier than the seats themselves.

B_Swapped93

true^

took the rear assemblies out and front(4pt harness w/harness bar) still lighter then all the stock belts and buckles. dry ice the sound deadening also you'd be surprised the amount ALL of it weighs

speedjunkie_g35

I can't remember exactly but I want to say for every 30 lbs removed is a tenth of a second improvement. I am curious what motor you have and what else is done? I just put the full interior back in so that I can race in a certain class and the only reason it was removed in the first place was to swap from a blue interior to black.

cmwright1986

+1

Eh2Samuelian

Its a eg hatch with a b16a swap, header, exhaust and a short ram intake

doctorake

Removing weight from a car will indeed increase 1/4 mile times. This article was in sport compact car 13ish years ago and show you that you can drop seconds if you remove enough stuff.

http://www.rcramer.com/fun/econobox/

98-6BTA

Just add more power, unless it's a drag car then rip out everything you can you don't need. IMO

Eh2Samuelian

For the adding more power part, do b16s respond well to intake mani and tb

jbpnoman

No. No Honda motor responds to any bolt-ons without a tune.

Grape Ape Guy

REALLY?

so you are saying that the 90hp in that car and the same 90hp in a go cart are the EXACT SAME.


but to be more realistic 90hp moving 2000lbs of car would be slower than 90hp moving 1700lbs of car.


If you take out spare tire, jack, back seats, interior trim, put on light weight wheels and eliminated most unnecessary weight you could make a difference OVERALL for the vehicle.

in racing motorcycles every 9lbs=1hp freed up (to a point), that covers rider and bike. But in any situation you would have to be spot on and consistently pulling the same time over and over before you seek the weight driven 1/100ths of a second

pityocamptes

Hell, while you're at it, you could cut the firewalls out, headliner, dash, carpet, windows (replace with plexi), steel rims... etc... sorry couldn't help myself...

boostlsveg

iTrader: (12)

Removing weight will make it faster. But as little as they weigh taking out just the seat ur not gonna notice mayb if u removed 50-100 lbs u would c a difference but ur not gonna notice the what mayb 15 lbs that the seat weighs.

purgat0ry

iTrader: (3)

Removing weight doesn't add HP at all
Removing weight means that HP doesn't have to work as hard to get up to speed
a 90hp grocery getter turned into a 90hp go-cart will indeed accelerate faster with a higher top speed due to less mass required to move.

But when it boils down to it, it's still only 90hp.

Also, the easiest thing you can to do make your car faster in the quarter mile without changing anything, is have a skinny friend drive it.
I plan on it..

pityocamptes

Hahahahahahaha...

integrainside

I undertand that of less weight means faster acceleration, but I just dont feel like saving 15 pounds is worth it. Gasoline weighs 6 pounds per gallon, just go to the track with 3 less gallons of gas and you would have better results. If shedding every last pound is that important to you, think about going on a diet too!

93egSLEEPER

I had my last coupe gutted from the B pillar back. Rear plastics, seats, truck...everything. It was noisy. I lost a total of less than 100lbs. IMO not worth the .1 and 1mph in your 1/4 mile time if its a DD. I hated it

estewar03

I agree with most people on this thread, you will not see enough of an improvement for it to be worth it. If it's a race car you dont even need to ask, just do it.

B_Swapped93

it's b16....lol just stop there thread needs to be locked.

doood

iTrader: (1)

i went 12.8@108 with full interior
i went 12.5@109 with gutted interior, everything else remaining the same.

passenger seat, rear seats, trunk plastics, etc., probably 30-40lbs of crap. tell me it doesnt do anything.

doctorake

Clearly no one clicked the link I posted.