Honda Civic Performance - JDM Discussion Engine tech, forced induction, springs, shocks, brakes, tires, etc.

weight reduction

Old 08-Jul-2007, 04:43 AM
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weight reduction

Was wondering if anyone had any experience in weight reduction.

was thinking abotu cutting part of the trunk and replacing it with think sheet metal.
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Old 08-Jul-2007, 07:34 AM
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I'm not so sure I would do that.

It might compromise the integrity of the chassis and or the safety in a rear end impact.

I'd first do this.

Remove the entire interior, everything except driver seat and dashbpard.

Then with a heat gun, meltout the tar sound dampening.

On the outside, remove all the plastic wheel well crap. (splash gards) and the one under the facia.

Remove the A/C unit and power steering if you have them.

Remove the glove box.

Remove the spare tire and jack (keep a can of that goop in case you get a flat)

remove every other screw in the facia.

Remove every other screw in the dashboard.

Remove the stereo and all the speakers and cables.

AND skip the choco bar, you can drop the 25 lb from your waist too.

TA DA! you and your fat girl just went on a diet.

Leave all the screws/ parts that are important for safety and chassis stiffness.

Don't remove bolts for sub-bumpers or the sub bumper itself.

Everything I suggested will cost you $0 and you can return it to stock if you want to sell the car later.

If you want to spend some money you can also CF the hood.
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Old 08-Jul-2007, 11:48 AM
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and enjoy the cop crushing your car b/c if you get pulled over they will assume you were street racing, or the car was built to street race since you've gutted the crap out of the car.
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Old 08-Jul-2007, 12:46 PM
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Why not change it out with a sheet of tinfoil or cardboard instead? It's a lot lighter and cheaper. :P
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Old 08-Jul-2007, 01:33 PM
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Originally posted by zeeman
and enjoy the cop crushing your car b/c if you get pulled over they will assume you were street racing, or the car was built to street race since you've gutted the crap out of the car.
Tell them you are on your way to shannonville. Or that you're painting the interior.
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Old 08-Jul-2007, 01:57 PM
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i wanted to gut my car but i dont feel like getting it crushed on just a suspicion of racing
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Old 08-Jul-2007, 03:41 PM
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the windshield weighs alot , take that out
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Old 08-Jul-2007, 04:56 PM
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removing small tiny 1g screws from the dash reduces weight??

like, the whole 5 little bolts holding it in? you save 5g of weight! wow.

removing splash guards, what does that reduce? 1 lb? wow.

that's REALLY gonna help.

if you want speed. forget making your car look like crap. put a good WELL built engine in, and turbo.

the time and dollars is worth making your car a unstructurally safe heap of crap.

it's a honda. not a race car. reducing the car by 10lbs isnt gonna make you move faster. but engine work will.
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Old 08-Jul-2007, 05:20 PM
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Before you modify any structure, you need a cage in there first to hold things in the right geometry.

Last time I was at Shannonville, there was a RSX pretty much lightened to the max. The rear spare tire well was replaced with a aluminum panel. But the car was also completely caged out.
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Old 08-Jul-2007, 09:45 PM
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well its comming off the road. its not a DD.
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Old 08-Jul-2007, 09:57 PM
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lightweight wheels!! Probably the most important upgrade.

But ya if its not a DD, gut the **** out of.
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Old 08-Jul-2007, 10:22 PM
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If you change the body much, you will need a cage.

Depending on what car you are trying to mod, yer weight should be easily around 2000lbs with driver and roll cage. If you have an EF/CRX you can get them much lighter, but will have issues keeping them in one piece. EG is a good middle-ground, while EKs are heavier. No idea how DA or DC 'tegs compare, but i know for certain the ITR is heavier than my CX hatch.

DJM:>
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Old 08-Jul-2007, 10:36 PM
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if i get it around to about 1000kg or 950kg id be more than happy.
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Old 08-Jul-2007, 10:48 PM
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Anthony, you remembered what I said

If the DA is going to be off road use only, you will need the following things (and depending on what type of racing you do):

- lexan windows all around (except drive and passenger side)
- cage
- hollow doors (door skins only)
- keep the front and rear rebar if the cage doesn't extend to these two points
- cut out any panel you don't need and replace with aluminum ones
- hollow dash to no dash
- sans air condition + heater

I think that should get to the goal you want.
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Old 08-Jul-2007, 11:36 PM
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Originally posted by Nova_Dust
Before you modify any structure, you need a cage in there first to hold things in the right geometry.

Last time I was at Shannonville, there was a RSX pretty much lightened to the max. The rear spare tire well was replaced with a aluminum panel. But the car was also completely caged out.

yea henry's track only RSX is pretty crazy

Name:  Shannonville-6.jpg
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so is andre's itr

Name:  Shannonville-7.jpg
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Size:  109.7 KB
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Old 09-Jul-2007, 12:11 AM
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List of things out of car.

-ac.
-ps.
-spare tire, jack, tire iron.
-back seats.
-rear wiper / motor.
-front sub frame replace with traction bar.
-trunk liner and plastic around the trunk.
-back speakers and speaker holders.
-power atenna / motor.

might have missed one or two things.

Current Wegiht 1120Kg.
Before Weight 1390Kg
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Old 09-Jul-2007, 12:58 PM
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get some dry ice and chisel out all the sound deadener on the floor.

it also makes a difference WHERE the weight is in your car. is it drag, or time attack? for drag, put weight forward, for time attack you want it low and in the middle. this is where relocating your battery and fuel tank can make a difference.
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Old 09-Jul-2007, 03:25 PM
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is this going to be a drag car?
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Old 09-Jul-2007, 05:02 PM
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1/4 car.
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