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Old 03-21-2003, 03:36 PM   #1
joefocker20
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Default Does this seem feasible?

Does it ound reasonable to say that 400 lbs could be lost off of a 02RS with the following weight reduction?

Spare 26.5
Jack 4.5
Tools 1.5
Spare Nut 0.5
Trunk Lining 3
Console Weight 5
Plastic Pieces under car 10
Fire Mat 1
Pulley Cover 0.5
Exhaust Shielding 10
Cruise Control 3
DRL Module 0.5
Interior Trunk Handle 2
Drivers side weight 1.5
Passenger Side Weight 1.5
Jack Point Weight 5
Tie Down 2
Tow Hook 2
fuel rail guard 5
Rear Mats 2
Rear Seat w/all hardware 42
Trunk Side Liners 2.5
Hawker 13.5 lb Battery 16
Flywheel (9lb) 19.5
Pulleys 5
Bumper Beams 80
WRX Hood 15
CF Trunk 10
LW Seats 30
Sound Deadening 30
Momo Wheel 5
lw rims 20
Mudguards 8
370
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Last edited by joefocker20; 03-21-2003 at 06:33 PM.
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Old 03-21-2003, 03:52 PM   #2
North Ursalia
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You are grossly overestimating some of your weights there, most notably the heat shields and the rear seat- it weighs nowhere near 37 pounds- it's alot closer to 10 .


Brian
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Old 03-21-2003, 03:56 PM   #3
joefocker20
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The rear seat is around 28 lbs, plus the hardware, seat belts, etc, would probably be around 35. Alot of these weights are exactly that, estimations. Other weights have been taken from here
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Old 03-21-2003, 04:22 PM   #4
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Does the O2+ RS have the same rear seats as the WRX? If so then the weight seems feasable. The thing is you're removing some safety gear but leaving others in place. The airbags (and associated sensors, wires) would easily be another 15-20 lbs, why not remove the front seatbelts and replace with harnesses, the additional (unused) console material, radio, heater, A/C, ABS module, headliner, A/B/C pillar plastic, etc. Just doesn't make sense to go through the time and trouble if you aren't going to go all the way.
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Old 03-21-2003, 04:25 PM   #5
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Well, I want to keep it streetable, but remove as much weight as I possibly can. I would be adding Schroth Harnesses, they're DOT approved arent they? I wouldnt remove the heater, but I would possibly remove the AC, I think I used it 3 times last summer, I usually just roll the windows down. I dont want a "stripped" RS, just a light one. I was thinking about covering the hole where the seat would be with a light carpet.
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Old 03-21-2003, 04:31 PM   #6
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just not my thing I guess. The RS is going to be quicker, sure, but there are other ways to make it quick too
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Old 03-21-2003, 04:38 PM   #7
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Well, Im working on that too Within a few weeks, I'll hopefully have my Cobb Clutch/Flywheel, Cams, and Brullen Headers. I'm also buying a Rex hood from someone to lighten the car a bit. I'm not going FI until my cars completely paid off, and I have house. This car also has to remain street legal. What fun would a 2600 lb RS be if you cant drive it
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Old 03-21-2003, 06:16 PM   #8
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I think you might be overestimating the weight of the sound deadening material. I took out all the tar that I could get out of the interior and got maybe 20 - 25 lbs.
I left a very thin layer around where the e-brake is and there's a little more behind the upper rear seat cushions. There's also some left in the trunk that I haven't gotten to yet. At the most, I could scrape out 5 more lbs.
The new models might have more tar, but I'd be surprised if you scraped out 70 lbs.

Change the 70 lbs to about 30 lbs, and see what you come up with. Also, I think ultra-light 16" rims should be your first lightweight purchase. Losing 5 lbs of unsprung weight from each corner will make more of a difference than a CF hood or CF trunk.
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Old 03-21-2003, 06:32 PM   #9
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Well, the sound deadening was an estimate. Did you scrape all of it offof all the vertical surfaces as well? I found a deal on a wrx hood, so Im going to replace mine with that.
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Old 03-21-2003, 06:53 PM   #10
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Quote:
Originally posted by joefocker20
Well, the sound deadening was an estimate. Did you scrape all of it offof all the vertical surfaces as well?
You mean like behind the window pillars and stuff? I don't think there's any but on the floor of car, and a little to the sides of the upper rear seat cushion. And there's none on the ceiling, cause I already checked that.
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Old 03-21-2003, 07:23 PM   #11
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Exclamation safety of a 4/5-pt harness

Yes, a 4 or a 5 point harness will of course retain you better in your seat during a collision, but it will also keep you in your seat in the event of a roll-over. With a 3-point system, if your car rolls, and your roof is crushed, it allows your body to move inward towards the middle of the car. If you have a 4-point system, well, you'll be held securely in your seat, but your head will probably snap!

Remember, race cars with multi-point seatbelts, also have a roll cage to support the roof in the event of a rollover.

Just something to think about, that's all!

As for lightening up your car, don't forget about unsprung weight - wheels and tires. Do people really need the chromed-up bling-bling 22" wheels? What about a nice set of super light forged 15" wheels with lite 15" race rubber?

Are you going to be drag racing or auto-x/track racing? If you're going to be drag racing. Heck, get rid of the sway bars! You're only going to be going in a straight line - who cares about the corners!

Don't forget about the exhaust system. SS Stromung may be nice, but heck, is it ever heavy!! (I've got a SS Stromung and I"m not changing it out! ). Get a potato launcher N1 or 5Zigen exhaust where the exhaust can itself is much simpler and lighter. Heck, get one of those sheepdog setups or some uber expensive exhaust made out of carbon fiber or titanium!

Glass is also very heavy. Change it to plexi-glass if possible? Probably not.

LaterZ!
Darren!!
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Old 03-21-2003, 07:36 PM   #12
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Well, I think the Schroth harnesses allow mobility, hence being DOT legal. Does anyone have the weight of a Stromung vs. stock? I want nearly my entire car to be done with $8000 ( I already have $2100 into it). I figure at that price, it should be sufficiently lightened and modified enough to be a competitve car. I will be using this for auto-x, street driving/stop light drags and probably an occasional trip to the strip, so this has to be a balanced car. After I get my income tax refund, my cams, clutch, flywheel, hood, Cobb CAI replacing my Ganz, and headers will be on the car. After that, I just want to focus on suspension such as Koni's and Ground Controls, better brakes, weight reduction, and thats about it besides an accessflash when its available.
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Old 03-21-2003, 09:03 PM   #13
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Quote:
Originally posted by BOY
just not my thing I guess. The RS is going to be quicker, sure, but there are other ways to make it quick too
Also, after I buy a house, I'll probably S/C the car, a 2600 lb Impreza w a S/C would be sick in my opinion!
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Old 03-22-2003, 02:15 AM   #14
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Joe, i saved you list for things to remove, there were a lot on there I had never heard/thought of! I dont want to lighten the front/rear bumper beams (or A/C cuz the girlie wont like that!), but the rest is great to do before going to the track (some permanently). If you actually strip all that stuff out of your car, and drive it everyday i will consider you pretty damn hard core.

As for suspension, i love my KYB/ground control combo. Good stiff ride, feels like a go cart, and worked amazing at the race track (my first time on the track i could pass the regulars). I ordered from www.lachutesubaru.com and they had it to me in 3 days. You also benefit formt he exchange rate to save money. Also, i think there is a small part of the suspension that has to be cut in one place to fit perfectly, and they do it for free before they ship it.

As for brakes I am at a loss, I want the best brakes for a reasonable price to fit under my stock rims...any ideas?

Also, which headers are you looking at? Equal length I bet...
Dan
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Old 03-22-2003, 02:59 AM   #15
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Well, Im looking at Brullen or TWE headers. I think what they had to cut, is the mount that holds the brake line on the original strut so they didnt have to disconnect the brakes and later have to bleed the brakes. I'm not too sure about brakes, I've heard that stoptechs are good, but if I cant finda good caliper to fit under 16s, I will just get the Subaru 4 pots and different rotors and pads. And add some goodridge lines into the mix. I dont know if I'll ditch A/C. Notice how my list didnt even include A/C? My list keeps most amenities. If you wanted to go really hardcore, I bet you could scrap 600 lbs from the RS.
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Old 03-22-2003, 01:09 PM   #16
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Last year during auto-x season I did a simple strip of my car just out of curiosity. With just the rear seat+hardware (seatbelts etc) as well as spare tire, jack and floor panels from legacy wagon (nothing that couldn't simply be popped out). I lost just over 125lbs out of the car. This whole process only took me about 30 minutes. Not bad for 30 minutes of work.
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Old 03-22-2003, 03:37 PM   #17
joefocker20
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Did you leave it all out?
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Old 03-22-2003, 06:08 PM   #18
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Quote:
Originally posted by joefocker20
Well, I think the Schroth harnesses allow mobility, hence being DOT legal.
If they are a 4 or 5 point harness, I wouldn't wear them on the road for the afforementioned reason of rollover safety. DOT leagal or not. The purpose of harness is to keep you in your seat, if you wear them loose enough to allow mobility, you are going to defeat that purpose and they will be unsafe for frontal collisions. Tighten them up and they become deadly in rollovers. Stick with 3 point for everyday driving.

Just my $.02
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Old 03-22-2003, 06:15 PM   #19
joefocker20
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Their Harness allows you to twist as a regular 3 point would, but also hold you in such a way as a typical harness..
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Old 03-24-2003, 04:12 PM   #20
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A word of caution on the autox rules. If you go with the body changing and lightening and cams etc. you are going to be in serious classes and very uncompetitive. Just a thought.
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Old 03-24-2003, 04:39 PM   #21
DanzBorin
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SM maybe even worse...
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Old 03-24-2003, 04:50 PM   #22
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EP, been there... spanked by that . Honestly, on a local level a lightweight RS with a good suspension/brake/tire setup can be competitive... don't even think of divionals/nationals
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Old 03-24-2003, 05:08 PM   #23
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Quote:
Originally posted by BOY
EP, been there... spanked by that . Honestly, on a local level a lightweight RS with a good suspension/brake/tire setup can be competitive... don't even think of divionals/nationals
RS must run STS to stand a chance... It actually used to romp there... now the lil civics and integras have taken over...

an RS-T could compete in SM if it were decked out... but I mean really decked out...
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Old 03-24-2003, 05:22 PM   #24
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Um...

conebasher


...that is all

SM is a no win proposition unless you've got hardcore money or sponsors. If you want to have fun it doesn't matter what class you race in, or if you win or lose.
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Old 04-01-2003, 04:36 AM   #25
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I got me one of those power makin' mufflers (turbo) on my car, but can I still hang out?

My question regards the big gray bar that goes underneath the rear seat on newer Impreza sedans. It was heavy. I took it out.

Now, what did it do?

If it's supposed to stiffen the chassis, then why does it connect to the car in such a weird way? I looked under the car where the bolts were located and there was nothing important around.

It looks like it is only there for side impact protection for rear seat passengers and the fuel tank.
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