Curb weight on a USDM celica is like 2398lbs or something close to that....its feasable to hit 2,000.....

2,415 is the curb weight for an ST Liftback celica, but that doesnt include abs (abs weighs another 30 pounds)... While tegs are lighter than celica yes I used to think they were really lightweight. The real lightweights are eg6 and ek9 civics....

2,395 pounds is the coupe st

This post has been edited by BonzaiCelica: Dec 13, 2016 - 2:15 PM

Well, the official weight of mine is 2409 (I do not have ABS). However, I'm factoring in tC wheels at 22 pounds each, and a subwoofer and amp in the back. So I give it 2450.

refer to my post down low. there are more accurate numbers there!

the more weight you take out from the interior the more it throws off the front to rear weight distribution. So if you had coilovers and got them weight balanced so that you can get as close to a 50/50 ratio then it would be fine. The more weight you take off the rear means the front will only get heavier, which will be prone to more understeer and unstable rear end right?[/b]

This post has been edited by BonzaiCelica: Dec 6, 2012 - 7:06 PM

on a fwd, there's going to be more understeer but with a lighter rear-end, the center of gravity shifts towards the front giving you better acceleration.

yea i've removed the sunroof (fabricating a composite plug to replace it) its like 4x lbs all together.

>

really azian advanced I didn't know that?? interested I'll look into that. Hey let me see that sun roof cover when you get a chance to take some pics please!

It 's very good things to Reduce the Weight and making the vehicle lighter. The best way to lighten your new car or truck is to remove parts which you do not need as well as to take the vital parts of your car and replace them with lighter models.

lately, i've been thinking of adding weight to my car to get more traction in the snow... lead weights positioned at the front behind the bumper would be the best spot to put them..

or you can get thinner tires for the front.

>>>>>>Weight Reduction Modifications>>>>>>

Stage 1 = >>80 pounds savings>>
• AGM 17 lb Battery = >> 18 pounds less>> >>(OEM Battery Weighs 35 pounds for USA Market)>>
• 1st Generation Scion TC (2AZ-FE) Starter = >>2 pounds lighter>>
• Fiberglass Hood with carbon overlay (VIS or Seibon) = >>11 pounds less>>
• Rear Seats (Backing and Cushion) = >>36 pounds>>
• Liftback Trunk Cover = >>6 pounds>>
• Kakimoto R Cat Back Exhaust = >>7 pounds less>>

Stage 2 = >>68 pounds savings>>
• Adjustable Coilovers >>28 Pounds less>> (Mcpherson)
• 3SGE Stainless Steel Header n' Bpipe for 3SGE (OEM weighs 32 lbs) = >>12-14 pounds less>>
• Stainless Steel Test Pipe = >>5 pounds less>>
• Rear window wiper/Motor and OEM Antenna = >>4 pounds>>
• Big Brake Kit with 304x26mm Rotors (Ceika) = >>17 pound less>>

Stage 3 = >>240-245 pounds savings>>
• Floor Mats, Carpet n’ Lining and Firewall Lining with Sound Deadening = >>20 pounds>>
• 6 Speaker Audio Sound System (Headunit, Amplifier, Speakers n Brackets) = >>12 pounds>>
• Interior Panels from Driver Seat to Trunk = >>18 pounds>>
• Door Panels = >>12 pounds>>
• Spare Tire, Wooden Tire Cover, Trunk Carpet and Jack = >>35 pounds>>
• Air Bag from Steering Wheel = >>4 pounds>>
• Full Bucket Racing Seat = >>10 pounds less over stock>>
• Full Carbon Fiber Hood = >>25 pounds less>> (Carbon Microsystem)

• Carbon Fiber Roof = >>11 pounds less>> (Carbon Microsystem)
• Fiberglass Trunk =>> 19 pound less>> or Carbon Fiber Trunk = >>25 pounds less>> (Carbon Microsystem)
• Rear Window (swap in for Lexan) = >>17 pound less>>
• Headlights and fog lights replaced with headlight covers = >>12 pounds>>
• Removing all A/C system components = >>45 pounds>>

>>OVERALL WEIGHT SAVINGS = 388 POUNDS>>


Sunroof with motor and Headliner >>33 pounds>>, Aluminum ST205 Hood: >>14 pounds less>>

This post has been edited by BonzaiCelica: May 27, 2025 - 1:23 AM

I had an Integra, I don't have numbers, but from what I was always told they were "heavy" compared to other Hondas (Excluding Del Sol). I can tell you this, the Celica has a much nicer ride, and the performance is not that much worse (roughly the same after the few mods I have done).

>

hmm It would take a lot of work to cut down the weight from an st to 2,000 pounds. I already listed everything you could lose weight from. An additional 25 pounds all around with some forged 16 inch wheels would be a good idea. But the that would only bring the weight of the car down to 300 pounds from stock weight. So where would that extra 100 pound weight loss come from???

And how to cut 33 pounds from the top of your roof:





This post has been edited by BonzaiCelica: Dec 17, 2012 - 3:36 PM

Cant give figures but i have removed a lot of kit from my JDM ST205
Removed aircon
Fg wings
Cf bonnet
Cf hatch & lexan screen
Cf mirrors
Rear seats removed
Aerial & motor removed
Rear wiper & motor removed
No spare wheel , jack ect
Dash swapped for non air bag version
Coilovers
Uprated discs and callipers all round - quite a lot lighter despite being far bigger
Cf seats
Also got FG doors but i might sell these on not sure yet

The wings and bonnet don't make too much difference unfortunately Johny

Aircon is the biggest one, as is losing the failbox for a FMIC.
Light wheels and brakes will make biggest difference to acceleration!

ohhh Rusty....

can we get this stickied please , maybe change the title to "how to lighten you celica for track use".....

This post has been edited by BonzaiCelica: Oct 23, 2011 - 1:13 AM

>

Yer my team dynamics are very light - not as light as your volks though and FMIC and lightweight battery
Might be my imagination but my versions are motor sport spec and they seem lighter than the regular ones on Erins

>

Really true. I've come to realize my wheels might be unacceptably heavy, I've lost a bit of steering feel and acceleration going from the original tire diameter (185/70/14) on steelies to these wheels, 20 or so lbs per wheel, 225/45/17 tires. A very heavy and tall combination.

This post has been edited by SwissFerdi: Oct 23, 2011 - 9:16 AM

another thing I was reading from the honda tech forums. If you replace the rear hatch window for a lexan/plastic type material it is highly recommended to install a roll cage. The glass on the hatch helps a lot with rigidity. Since their double wishbone suspension is more rigid then our, I think they know what they are talking about...

of course this only applies to FF Layout Celica's....

This post has been edited by BonzaiCelica: Oct 28, 2011 - 3:40 AM

Bonzai, i removed all my windows.

door windows are gone (you can't race with them up, and you can always replace with lexan/plexi
also removed the two smaller side windows as well and having them replaced. However, *everything* is gone from my car so it doesn't count until i put things back together

once i get my coilovers I should really take my shell to the weight scales

I like what you did with the roof, but rivets

This post has been edited by playr158: Oct 28, 2011 - 8:32 AM

thats not what I did player. Thats a photo taken from honda tech. its an example. I'm just getting idea's of how to plug up the sunroof. I'm probably weld that sunroof shut or whatever the shop advises me to do.

Ahhhh thank goodness. rivets look horrible.
Wish I had time to get to my garage and finish that stuff up
I'd like to make it removable instead of just welding it shut.

There is this info on GTFours.uk, they also weights of GT4 specific parts in another section




stickied & moved to the suspension section as it has more to do with that side of things.

This post has been edited by Rusty: Oct 31, 2011 - 1:01 AM

A lot of rally cars just rivet the sunroof hole closed. I welded and fiberglassed mine. I was running out of time and it looks like ****, but hey whatever.


As far as buying carbon fiber body panels for weight savings, its useless unless you're really involved in some type of racing. My dads 230lbs and I cant really tell much of a difference with him in the car and without. Really amazes me what some people go to for weight savings in a car that might see the drag strip once a year or an autox occaisionally. The mustang guys (when I used to have one) were hell bent on rear seat deletes that saved like 30 lbs... because they drag raced occaisionally.

look below for weight reduction totals!

This post has been edited by BonzaiCelica: Feb 6, 2022 - 10:52 PM

First Id like to say that for every vehicle I have owned I could feel the difference between having a passenger and not. You can feel the loss of acceleration, the suspension over bumps and the way the vehicle rolled around turns. On my motorcycle and 6gc I can even feel a full fuel tank vs an empty tank. The slower the car the greater the performance gain from reduced weight.


Another idea Id like to add to this thread is that the most effective places to reduce weight are on
(a) rotating parts such as the crankshaft, flywheel and tire/wheels. These parts store a lot of inertia so lightening them will reduce significantly reduce the speed at which the engine/drivetrain accelerate and decelerate. Pound for pound the most effective area to reduce weight.
(b) the unsprung weight on the suspension such as control arms, brakes and tire/wheel. The less the moving components of the suspension weigh the less inertia they have. Reduced inertia means that the suspension will react faster to the road surface which reduces wheel hop and the amount of vibrations/bumps that are felt within the cabin of the vehicle.
© the parts which are on the extreme height of the vehicle such as bumpers, batterys, sunroofs, hoods, trunks and so on. The higher in elevation a part is from the roll center of the vehicle(meaning the higher off the ground it is) the more it will cause the body of the vehicle to roll around turns which reduces traction. You are effectively lowering the center of gravity(just like when you drop it) towards the surface of the road.
(d) the parts at the outer extremes from the vehicles center of inertia such as the battery, bumpers, fenders, hood, hatch, engine and so on. Just like the weight of the rotating mass in the engine effects its ability to rev up quickly, so do the heavy components at the extreme front, rear, and sides effect the vehicles moment of inertia. The vehicle will turn easier and more quickly with a reduced moment of inertia which is why mid-engined cars handle so much better than their front engined counterparts. The best example I can give is whether it is easier to swing a heavy bat or hammer vs your empty hand.


Anyways, the point is that certain areas of the car magnify the effects of heavy components. Parts that spin effect acceleration and deceleration performance. Parts farther away from the center of the vehicle effect the handling of the car by effecting the angular acceleration of the vehicle around its center of gravity, which includes roll, yaw and pitch.

Unless you're using the car strictly for some form of auto racing, I don't see the point in carbon fiber parts. Well, aside from a carbon fiber driveshaft. Better off spending the money on lighter wheels, flywheel, etc... first and using carbon fiber body panels as a last ditch effort to remove weight.

And back from the dead again.
These are the actual #s. I know, I weighed them myself.

The Carbon Fiber hatch by itself weighs ... 15 lbs

The stock hatch without the glass weighs ... 40 lbs

The glass from the hatch weighs ... 18 lbs

Stock hatch (with glass, wiring, under plastics, brake light, wiper motor) = about 60 lbs
The CF hatch (with glass, wiring, under plastics, brake light) = about 35 lbs

25lbs!!!!! for how much effort and money hahaha oh well good fun at least and i guess you can say it'll help handling since it will move the center of gravity ~1/8" lower in the car

Nice work though Bats.

This post has been edited by playr158: Nov 12, 2013 - 12:21 PM

couple the cf hatch with plexiglass and then it may be a bit more worth the time!