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Old 03-27-2004, 01:23 PM   #1
Evil Dr. Scoob
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Default Weight reduction threads?

I've been looking around for the threads that have tips for generalized weight reduction in the Impreza, but alas, no luck.

Any help out there?

C
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Old 03-27-2004, 01:43 PM   #2
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I'm not to sure about weight reduction but I just moved my battery from the engine bay, to the trunk. In the process I had to remove my rear seats... Well I've been driving it like this for the past few weeks, and after last nights run I LOVE IT! I'm not sure what it did to the weight distribution or gross, but it did wonders for my handeling.
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Old 03-27-2004, 02:22 PM   #3
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A lot of the weight-reduction-related threads are fairly old, but I ran a search with no date limits and came up with this:

http://forums.nasioc.com/forums/show...ight+reduction

Hope it helps!
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Old 03-28-2004, 01:23 PM   #4
Evil Dr. Scoob
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Danka MUCHO mes amie!

That's great info!

Has anyone seen this article from Sport Compact Car in Aug '03 pg 214? They removed the bracing on the underside of the stock hood and reinforced it with 3 hood pins. Saved 12 lbs on their Sentra!

Has anyone tried this?

C
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Old 03-30-2004, 01:06 PM   #5
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I guess no one has done this?
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Old 03-30-2004, 04:46 PM   #6
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It also flexed a ton.

There are some basics.

Replace metal with composites or carbon fiber. Such as hood, doors, trunk, etc.

Replace glass with lexan.

Lighter wheels.

Strip the interior to nothing but a steering wheel and a seat.
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Old 03-30-2004, 06:35 PM   #7
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pull up the carpets, remove sound deadening padding, remove sound deadening tar by waiting till it's really cold outside and smashing it with a hammer, replace carpet. that was good for 15-20 lbs for me and it cost me nothing but my time and scraped up hands.
oh yeah i also pulled out my whole A/C system, but that's only because i never use it anyway.
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Old 03-31-2004, 03:15 PM   #8
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the sound deadening tar is a pain. not only that but it also covers some holes to the outside. i especially noticed the ones over the gas tank. not that big of a deal if you live in tow, but if you go on gravel it will fill your whole car with dust very very quickly. there is also a kind of secondary padding under the pedals. if you don't pull this up it can hook the heal of your foot when trying to put the clutch in or especially when you take it out. mostly an inconvinience, but dangerous if you are trying to get moving quickly.

edit: i removed my carpet and back seats completely. there is also a really really heavy bar under the rear seats. 4 bolts and it's gone.
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Old 03-31-2004, 04:57 PM   #9
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Flex Schmex!

I loved that mod in SCC 'cause it was so ghetto.

I've got 2 months of nothing until I start internship and end any kind of normal life. Plus I have no money until then.

So I'll give it a shot. If you folks can recommend inexpensive ways for cutting metal. I'd be much obliged.

Also, I don't know what to hook the hood pins to in the engine bay.

Thanks again for your suggestions!

Christian
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Old 04-02-2004, 01:32 AM   #10
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My attempts at reducing weight on my car....

JDM Bumper Beams, alunimum trunk lid, no wing, no 80000 lb sound system.

I used to have a CF hood, sold it to a friend. My next step will be an alunimum hood. Soooo much lighter than stock. And unlife CF hoods, easier to paint.

Chris.

Cusco GT Wing removed 3/23/04. Car drives completely different... much more responsive, handling wise. Oh and gas mileage up... due to the reduction of drag...
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Old 08-07-2005, 12:48 PM   #11
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Default back to weight reductions

Quote:
Originally Posted by Ozymandias
the sound deadening tar is a pain. not only that but it also covers some holes to the outside. i especially noticed the ones over the gas tank. not that big of a deal if you live in tow, but if you go on gravel it will fill your whole car with dust very very quickly. there is also a kind of secondary padding under the pedals. if you don't pull this up it can hook the heal of your foot when trying to put the clutch in or especially when you take it out. mostly an inconvinience, but dangerous if you are trying to get moving quickly.

edit: i removed my carpet and back seats completely. there is also a really really heavy bar under the rear seats. 4 bolts and it's gone.
Had a question about removing that bar underneath the backseat. I just did this yesterday, out of sheer boredom, but then I wondered if it would cause a noticible decrease in chassis rigidity.
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Old 08-07-2005, 08:09 PM   #12
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i think that's partially for safety and partially for structural ridigity.

i'd get a cf hood/trunk and lightweight battery before i even thought about taking out that bar.

have you taken out the sound deadening stuff too?
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Old 08-07-2005, 08:23 PM   #13
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not to be a jerk, but why would weight reduction have anything to do with:
Naturally Aspirated Forum?????
race seats
lightweight battery(relocating to the trunk uses much more cable, and cable ain't light)
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Old 08-08-2005, 11:10 AM   #14
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i have a carbon fiber/fiberglass hood that needs paint (again... deer incident)...
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Old 08-09-2005, 12:34 AM   #15
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Quote:
Originally Posted by deuce.five
not to be a jerk, but why would weight reduction have anything to do with:
Naturally Aspirated Forum?????
race seats
lightweight battery(relocating to the trunk uses much more cable, and cable ain't light)
uhhhh...'cuz the care is naturally aspirated.

I am considering the other mods, like aluminum hood and racing seats, battery, etc. I just wanted to do the cheap thing before I have to listen to the 'ol lady complain about spending more money on the car.
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Old 08-09-2005, 12:59 AM   #16
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I am almost done with a weight reduction FAQ. I'm on the second draft waiting for QC and it should be done by the end of the week. It will benefit both NA and turbo. Look for it in the near future.
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Old 08-09-2005, 11:18 PM   #17
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nice...
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Old 08-09-2005, 11:49 PM   #18
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Simplest things first, spare tire, jack, and removable interior panels, carpets and seats.
Dpending on your car this can net a fair bit of weight. That alone was close to 115lbs on my car. Then you go on to lighter wheels and other parts which you may change anyways. Sounds deadening and the tar stuff....it really isn't that bad, just takes some elbow grease. We strip heaps of cars for rally prep and it is INCREDIBLE how much weight you can get rid of if you don't mind a little extra noise or vibration.
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Old 08-10-2005, 12:12 AM   #19
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you can replace your oem battery to a light weight battery. remove rear seat, front passenger seat (if you drive like a loner), heat unit, speakers, headunit, sound deadening paddling, spare tire, airbags, jackstand, interior panels (center console), all carpet you see inside the car, light weight rims, and carbon firbre hood and trunk
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