Celica Forums General Discussion Exterior Weight Reduction

can i get a sticky on this??

2000-03 Toyota Celica GTS
Stock Weight - 2500lbs
Stock Wheel Weight - 22lbs each/without tires
The 2000-03 Toyota Celica's weigh approximately 2500lbs, dividing by the horsepower of 180, we get about 13lbs/hp.
So roughly every 13 lbs removed from the cars weight will add an effective 1 hp.
Gas weighs about 8lbs/gal so 16 gallons in the tank weighs 128lbs. If you have only 1 gallon in the tank, its almost a 7 horsepower equivalent difference. A passenger can make even a bigger difference, not to mention the drivers weight.
You can easily remove things like the spare tire and jack, the floor mats, the rear seats, interior panels and anything else.

Listed below are some easily removable items:
1. Passenger Seat (37lbs) - Removing the passenger seat is a very easy and effective way to give your Celica a small boost in power. The nice thing is that the seat is only held in place by 4 bolts.

2. Rear Seat (29lbs) - The rear seat is a little more complicated to remove than the passenger seat. When removing just remember where everything goes and it should be easy to put back in place whenever needed.

3. Rear Seat Cushion (10lbs) - The rear cushion should be removed at the same time as the rear seat.

4. Floor Mats/Front and Rear (6lbs) - This has to be the easiest weight reduction available for the Celica owner.

5. Tire Floor Cover (3lbs) - The tire floor cover is right underneath the rear hatch carpeting.

6. Spare Tire and Jack (32lbs) - Another easily removable item.

Total Easy Weight Removal = 117lbs or about a 9hp increase.
Intermediate Skill Weight Reductions

The weight reductions included below can even prove more effective than some of the reductions included above. However, once you start removing these items you are taking away from the cars overall appearance and in some cases its more predominent ammenities.

7. Air Conditioning (40lbs) - Removing the air conditioning will net you a reduction of about 40lbs. Be sure to remove everything from the engine as well as behind the dash. Should be completed by the experienced only.

8. Front Hood (50lbs) - Replacing the Front Hood with a lightweight Fiberglass or carbon fiber hood is a great way to remove some weight around the front end of the car. Total weight reduction will be close to 50lbs or greater depending on the aftermarket hood you choose.. If you dont intend on replacing the entire fron hood you could also remove the sound dampener on the inside of the hood. This should help in cooling your engine a little.

9. Stock Wheels (22lbs each/replacement weight from 11lbs each) - Replacing the wheels is a must for anyone seriously interested in increasing there cars Performance. The stock wheels are quite heavy and can be replaced with a variety of aftermarket models. We would suggest searching for lightweight wheels. Replacing your wheels with lightweight wheels will dramatically increase your cars acceleration. We suggest not going over 17 inches if maximum Performance is what you desire to achieve.

10. Front Drivers Seat (40lbs/replacement weight from 14lbs) - The front drivers seat on the Celica can easily be replaced with a much lighter alternative A lightweight racing seat will save you considerable weight and will also be effective once you have added more horsepower to your car.

Total Intermediate Weight Removal = up to 188lbs or a 14+hp increase.
More Weight Reduction
Some of the things listed below can also be removed or replaced with lighter alternatives than stock.
Stock Flywheel - Can be replaced with lightweight aluminum flywheels or machined down in excess of just 13lbs.

Stock Steering Wheel - Can be replaced with lighter Performance steering wheel with no airbag.

Passenger Airbag Removal - Can save some extra weight as well. (Not recommended for normal driving)

Interior Panels - Both the drivers side and passenger side front door panels as well as the rear panels can be removed to save in excess of over 40lbs.

Stock Speakers - With a weight of over 2 pounds a piece these can also be easily removed.

Rear Hatch Cover - This can simply be removed whenever needed. Weight is close to 6 lbs.

Replace Stock Exhaust - The stock Celica exhaust weighs considerably more than some of the aluminum aftermarket exhausts. We suggest going with the TRD Exhaust.

Wiper Motors - Although they are generally needed under almost all driving conditions they CAN be removed if need be although we do not personally recommend it.

Carpet - Removing the carpet as well as the carpet lining underneath will reduce the cars overall weight by close to 40lbs. Removing excess wiring and bolts and brackets will also net you a reduction of close to 10lbs.


http://www.importmodifications.com/celicaweightred.html

Good info!! However, if anyone didn't already know this...

uhm...a lot of people dont know what they can remove and how much it would help

This is good info, thanks Iced, i saw it already, but at least now its easy to get to rather then forgetting where it was and having to find it, now its right here available, so i know what to remove when i need to on nights that i go racing, i agree, should be a sticky!!

Saw this a while ago.

This is some good information!! Good find.

Great Post!

nice info

I should just post a pic of my car

also I'd like to point out some of your figures are inconsistent with what we got when we weighed ours. also I'd like to add we weighed more then one car.

the hood of a celica is NOT 50 lbs it's actually less than 30.

believe me there are a lot of things that are easily removed and very heavy you didnt mention.

nice info for most noobs though!

also I wouldnt suggest anyon attempt removing their rear speakers cause they are riveted in Yes they can be removed but outting them back in will take a lil effort.

I have not weighed my car yet like I should but using 2500 lbs as a base my car would weigh around 2450 w/ me in it. I weigh about 185. also I have my A/C in, door panels, speakers. all that fun stuff.

but eh, it's a good start for beginners.

what kind of track times do you run?

oh i dont have a "drag" celica i just liked the info i found on that site (I didn't write this) and thought others would appreciate it,do you play on getting nitrous? you could probably run 13's then

they missed the battery...

I run 13's now with just the Intake with my PFC and a header I plan to hit mid 13's

damn bro im impressed

do you plan on Turboing or spraying?

this doesn't seem to make sense

don't get me wrong though, i know for a fact that weight reductions improve the Performance of your car but i didn't think that it would be as significant as 13lbs = 1hp gain

what i think...
the rated wheel horsepower for a gts is i think 166hp and the flywheel is rated at 180hp so if you lightened the car by 208 lbs (at 13/hp) = to 16 hp gain
then you would have more then the flywheel at your wheels (182/180)which doesn't make sense to me can someone please help me out here...

i think that you would just be freeing up some lost horse power and getting better throttle response... but 13lbs/per 1hp just sounds crazy

ummm... you are definetly missing the point there...
i dont know how to explain...my eng sucks...someone help explain...

first: we dono wut lost do the weight affect the power.
second: 13lb = 1hp is just a calculation out of the numbers...it does not really exist.
third: you are confusing urself with the logic.

no that's just my point 13lb = 1hp does not really exist

i like the thread and it is very informative but the 13lb / 1 hp is very miss leading to some people out there because
you arent getting "actual" power gains, you can dyno before and after and you'll get the same reading but if you run the quarter you times will be faster after the reduction

that's all

^^^exactly~ just that logic is kinda confusing~

before reading this topic, i knew everything. now im confused

Carpet 40lbs? Having a giraffe or what? Not that theres much carpet in there anyway, I don't think axminsters finest would weight that much. Thats heavier than the hood.

Maybe Toyota should bring out a stripped out Celica with a carbon fibre body, and carbon fibre interior.

100lbs=1/10 sec in a quarter mile...but most of you guys already knew that...but just in case!

good to knnow b/c i dident

100lbs is equal to .1 seconds, I thought.

you don't "get" hp from loosing weight, you increase the possible amount of acceleration.

Remember, that F=ma if you lower the mass and force stays the same (you can't add HP by reducing weight) the acceleration will increase accordingly.

so, if you want to find a, it's a=f/m

Good luck converting 180HP into a force in Newtons, I spent the last 10 minutes and a sheet of paper doing it, and I give up since it's just a website

also, the 2500lbs is weight, not mass. Gotta find the mass in kg

Give me a few i'll try to figure it out

if you can do it, props to you.

converting from HP (which has to be watts) which is power, into Netwons with is force...

man, it's way to early for a 2 page conversion

HAHAHA i'm bored so i'm gonna give it a try

180 horsepower = 134.2 kiloWatts

thats the best point to start from. Good luck getting from power to force, you are going to need it.

it has to be newton meters, but then you need to know the diameter of the tire, and the surface contact point with the road, plus coeffiecient of friction of both surfaces...

bah.

I got that already...way ahead of ya

Let me know when you get to the power into force, I'd be cool to see what you used to convert

Ok this is all i could figure out...i have no idea how to figure out the friction..

But...Per 100 pounds lost you gain an average of .22 secs

Too many numbers for a monday

where is the math for this?

I'm not typin it out right now...i did it on paper...i'll scan it for ya later

How do you convert power to force? i forget?

that is the whole point.

The equation F=ma is in Newtons...therefore, unless you converted HP to Newtons, you cannot answer the question...so where did your answer come from?

i worked it backwards somewhat...but then i got stuck..that number doesn't work now that i checked it.

FUCK THIS

exactly what I said.

I spent 15 minutes and an entire sheet of paper working on it, and still got nothing.

Damn monday mornings.

Fuck weight reductions...its not really gonna gain you anything worth wild...spend the money on driving lessons and you will get more out of it

ha ha I ran a 14.491 with a stock motor because of some weight reduction. lol

it's not really 13 = 1 its higher then that.
stock GTS dyno average of 155 whp. then you have to factor in driver weight and do the number from there.

my car estimated stock weighed 2680 ( I weigh 180) If I put down 155 whp my # mould be 17 = 1

I right now have over 171 whp and weigh 2450 so my current is 14 = 1

regardles of the #'s the more you take out the less your engine has to pull.

Sweet, I've never seen this before. (feel like the only one) Good to know, *hits the print button*

thats great, you can really lose a lot of weight, but removing stuff such as wipers, panaling, etc, is a little overdoing it (for practical purposes anyway). That is mostly for racing purposes...

^^ I run no rear interior all the time now. then I have a few things that come off for the track only like passenger seat and dr's, stuff like that. everything I do can be finished in time to get to the track by noon and we never start before 10. last time I even fit in changing the oil and spark plugs and rotating the tires. lol

wanna hear something funny, i took out all the lining from the trunk area and the inside color of my carbon blue celica is dark green...?

go figure

lol, mine is black. i like it, and thats how i leave it

mine is a different greenish shade of silver.

nice info!

Floor mats weight up to 6lbs? They certainly don't seem very heavy on their own.

Good thread though.

lol. yeah, my carbon blue car has green inside to for the trunk.

IT's sure that is not 13lbs/1hp, maybe 50lbs/1hp... no more

is taking the wiper fluid out worth it? how much do you think a full thing of wiper fluid weighs?

i have a totally stripped interior on my car(everything but centerconsole, speakers, passenger seat, carpet, dash, spare tire w/ jack), with a 200pound friend (myself around 150) i was hitting 14.5 (1/2 tank of gas) when i assumed my trap is 93-95mph. without my friend, and without a muffler (it sounds so good and LOUD) on a strech of vacant road (we messure a 1/4 out and posted my friend at the end) i was hitting about 13.9 with a (1/4 tank of gas).