| LABARINTH | 05-06-2004 03:58 PM |
Weight = Enemy
�
�
Ok guys I'm going to have to start modding it before I go crazy and I'm pretty sure I know what I'm going to do. Instead of trying to go horsepower/torque crazy, I am going to take the advice of some of the top sports car manufacturers out there and view weight as the enemy...and the reduction of it the ultimate goal. In order to reduce the weight I have two things in mind to start off with:
1. carbon fiber hood, trunk lid, and wing(if I decide not to just ditch the wing all together).
2. full titanium exhaust.
Those two things should cut a good amount of weight. Does anyone else have any ideas for cutting weight? I don't want to lose daily driver function so I'm not going to get rid of the AC or any of the seats but I am open to suggestions. Money really isn't an issue...but the more expensive the mod the longer I will have to save to do it. I am hoping that this will also make my car better competition for the EVO MR when it comes out.
After cutting weight I think I will start doing some power mods but I'll leave that to the future.
1. carbon fiber hood, trunk lid, and wing(if I decide not to just ditch the wing all together).
2. full titanium exhaust.
Those two things should cut a good amount of weight. Does anyone else have any ideas for cutting weight? I don't want to lose daily driver function so I'm not going to get rid of the AC or any of the seats but I am open to suggestions. Money really isn't an issue...but the more expensive the mod the longer I will have to save to do it. I am hoping that this will also make my car better competition for the EVO MR when it comes out.
After cutting weight I think I will start doing some power mods but I'll leave that to the future.
| del105 | 05-06-2004 04:06 PM |
i would go 2 piece brake rotors front and back. Idont really know how much carbon fiber is gonna help you though.
| LABARINTH | 05-06-2004 04:08 PM |
carbon fiber is lighter so it should help
| afpdl | 05-06-2004 04:10 PM |
the cf hood isnt going to lose more then a couple of pounds. Lightweight battery will shed close to 20lbs off the front. Bucket seats can shed 20lbs each, theres some weight to lose in the exhaust. Coilovers can also shed a few lbs per corner, and hotckis swaybars do too.
If you want to go really far with it pull out your carpet take out all the insilation and tar and then reinstall the carpet.
If you want to go really far with it pull out your carpet take out all the insilation and tar and then reinstall the carpet.
| afpdl | 05-06-2004 04:11 PM |
[QUOTE][i]Originally posted by LABARINTH[/i]
[B] carbon fiber is lighter so it should help [/B][/QUOTE]
The aluminum hood only weight 15lbs your not going to get much lighter with a cf one its probably not worth the money. The trun will save a good bit of weight though.
[B] carbon fiber is lighter so it should help [/B][/QUOTE]
The aluminum hood only weight 15lbs your not going to get much lighter with a cf one its probably not worth the money. The trun will save a good bit of weight though.
| RedBean | 05-06-2004 04:11 PM |
If I recall, WorldOne said that there was no weight advantage on the cf hood on their STi over the stock aluminium one.
| afpdl | 05-06-2004 04:12 PM |
[QUOTE][i]Originally posted by RedBean[/i]
[B] If I recall, WorldOne said that there was no weight advantage on the cf hood on their STi over the stock aluminium one. [/B][/QUOTE]
All but the most expensive cf hoods are reinforced by fiberglass adding the weight back.
[B] If I recall, WorldOne said that there was no weight advantage on the cf hood on their STi over the stock aluminium one. [/B][/QUOTE]
All but the most expensive cf hoods are reinforced by fiberglass adding the weight back.
| LABARINTH | 05-06-2004 04:14 PM |
alright so I might not go with the CF hood...well maybe I still will...but that will be because of looks not weight....
afpdl: Do you have any suggestions on battery, seats, and coilovers?
afpdl: Do you have any suggestions on battery, seats, and coilovers?
| mindchatter | 05-06-2004 04:16 PM |
From what I've heard a CF hood provides minimal, if any, weight loss over the stock piece. Subaru really went nuts in an attempt to keep the weight down from the factory....and think they did an admirable job on the hood in particular.
I know some folks have gone with a JDM front bumper beam, and believe that saves in the neighborhood of 20-25lbs...can also ditch the AC for some more weight loss. I replaced my stock battery (33lbs) with a Yellow Top Optima (51R model) for another 15lb loss. I'd heard something about a JDM rear bumper beam too IIRC.....lighter wheels? (although you'd sacrifice some strength I'm sure)
After that you're looking into costly territory IMO. Replacing rotors, while a nice loss of rotational weight, is prohibitively expensive (for me, anyways :) ), but think you can remove another 30lbs total doing that. I've heard of members doing the above steps and finding the next logical step to be stripping the backseat and any associated hardware.....but we're quickly approaching the limits of my knowledge on the subject. Good luck!
Stu
I know some folks have gone with a JDM front bumper beam, and believe that saves in the neighborhood of 20-25lbs...can also ditch the AC for some more weight loss. I replaced my stock battery (33lbs) with a Yellow Top Optima (51R model) for another 15lb loss. I'd heard something about a JDM rear bumper beam too IIRC.....lighter wheels? (although you'd sacrifice some strength I'm sure)
After that you're looking into costly territory IMO. Replacing rotors, while a nice loss of rotational weight, is prohibitively expensive (for me, anyways :) ), but think you can remove another 30lbs total doing that. I've heard of members doing the above steps and finding the next logical step to be stripping the backseat and any associated hardware.....but we're quickly approaching the limits of my knowledge on the subject. Good luck!
Stu
| afpdl | 05-06-2004 04:17 PM |
Battery, hawker genisis or olympus about $80 13lbs.
Seats look around it depends on your height weight as to what fits you best. You can get super lightweight cf shell ones for $$$ or some fiberglass ones 15-20lbs for 3-500.
Jics, teins and probably some other coilovers shed some weight.
Seats look around it depends on your height weight as to what fits you best. You can get super lightweight cf shell ones for $$$ or some fiberglass ones 15-20lbs for 3-500.
Jics, teins and probably some other coilovers shed some weight.
| Mancini | 05-06-2004 04:17 PM |
Weight savings is a great idea but there are compromises. I plan on doing some basic stuff. Personally, I wouldn't waste the money on a hood since we already have aluminum hoods that are fairly light weight. But here are some suggestions for other things that you might want to remove or modify.
Light weight wheel/tires
Remove spare tire/tools/jack
Remove trunk carpet and spare tire cover
Get lightweight bumper beams
Titanium exhaust like you mentioned
Lightweight racing seats
Lightened pulleys/flywheel
Misc brackets in engine bay
A little more hardcore and you could do:
Charcoal evap canister
Cruise
Racing steering wheel without airbags
A/C
Stereo
Back seat rear cusion
Back seat backrest
Back seat sound matting
That's what I planned on doing to my RS and it was well over 300 lbs worth of stuff, but you probably wouldn't want to do most of it. Just an idea though.
Brian
Light weight wheel/tires
Remove spare tire/tools/jack
Remove trunk carpet and spare tire cover
Get lightweight bumper beams
Titanium exhaust like you mentioned
Lightweight racing seats
Lightened pulleys/flywheel
Misc brackets in engine bay
A little more hardcore and you could do:
Charcoal evap canister
Cruise
Racing steering wheel without airbags
A/C
Stereo
Back seat rear cusion
Back seat backrest
Back seat sound matting
That's what I planned on doing to my RS and it was well over 300 lbs worth of stuff, but you probably wouldn't want to do most of it. Just an idea though.
Brian
| afpdl | 05-06-2004 04:19 PM |
Exactly how do you expect to save weight by getting rid of cruise control on a STi?
| Mancini | 05-06-2004 04:21 PM |
I haven't looked at the cruise control on the STi, but on the old RS's it was about 5 lbs and when I removed it I put a turbo in it's place :)
Edit: that was a list of stuff from my RS, so take it for what it's worth.
Edit: that was a list of stuff from my RS, so take it for what it's worth.
| afpdl | 05-06-2004 04:22 PM |
Its a program on the sti, we have electronic throttle. The only weight you would save is from the stalk on the steering wheel and the wire going to it.
| capaWRX | 05-06-2004 04:25 PM |
[QUOTE][i]Originally posted by STiDayDreamin'[/i]
[B] ... JDM front bumper beam, and believe that saves in the neighborhood of 20-25lbs ...
I replaced my stock battery (33lbs) with a Yellow Top Optima (51R model) for another 15lb loss...
[/B][/QUOTE]
jdm bumper beam - front/rear = ~45lbs of weight saving but increased damage when in an accident
i would recommend a braile auto battery - there is a group buy going on at imprezawrxsti.com... 11.5lbs - stock is 32.5lbs
as far as wheels go - volk, work, oz, and prodrive are your best bets and tires are even are good way to knock off some unsprung weight - the biggest enemy of them all...
[B] ... JDM front bumper beam, and believe that saves in the neighborhood of 20-25lbs ...
I replaced my stock battery (33lbs) with a Yellow Top Optima (51R model) for another 15lb loss...
[/B][/QUOTE]
jdm bumper beam - front/rear = ~45lbs of weight saving but increased damage when in an accident
i would recommend a braile auto battery - there is a group buy going on at imprezawrxsti.com... 11.5lbs - stock is 32.5lbs
as far as wheels go - volk, work, oz, and prodrive are your best bets and tires are even are good way to knock off some unsprung weight - the biggest enemy of them all...
| afpdl | 05-06-2004 04:28 PM |
The reason I wouldnt recommend the braile is even on a group buy its more expensive then the hawker [url]http://www.gotbatteries.com/ProductPage.asp?ProductNum=37L141S3[/url] which weighs 10lbs.
Bumper beams are great for weight savings but hard to explain to insurance companies if you lose your engine in low speed front end colission.
Bumper beams are great for weight savings but hard to explain to insurance companies if you lose your engine in low speed front end colission.
| afpdl | 05-06-2004 04:29 PM |
Oh BTW if you ever plan to do any type of competitive motorsports(autox, time trials) be aware the cf trunk and some of these other mods will probably put you in a class you cant hope to be competitive in.
| Midnight_Gold | 05-06-2004 04:43 PM |
You could always go the route of the MR and try aluminum everything. :lol: Chop your roof off, your doors and trunk off, and make yourself a really light, completely worthless, chopped STi. You'd say goodbye to weight, but hello to SM.
:devil:
Seriously, Aside from some interior losses, you're not gonna lose too much weight without doing something drastic.
- Miranda
:devil:
Seriously, Aside from some interior losses, you're not gonna lose too much weight without doing something drastic.
- Miranda
| afpdl | 05-06-2004 04:47 PM |
[QUOTE][i]Originally posted by Midnight_Gold[/i]
[B]
Seriously, Aside from some interior losses, you're not gonna lose too much weight without doing something drastic.
- Miranda [/B][/QUOTE]
Ehh mines down to 3100lbs and I havent done much. To get under 3k you have to start getting drastic. 100lbs ligher is 100lbs less to acclerate, brake, and haul around a corner. To bad I weight 220 though:(
[B]
Seriously, Aside from some interior losses, you're not gonna lose too much weight without doing something drastic.
- Miranda [/B][/QUOTE]
Ehh mines down to 3100lbs and I havent done much. To get under 3k you have to start getting drastic. 100lbs ligher is 100lbs less to acclerate, brake, and haul around a corner. To bad I weight 220 though:(
| LABARINTH | 05-06-2004 04:51 PM |
I only weigh 175-180 so there isn't much more for me to cut there.
| afpdl | 05-06-2004 04:52 PM |
I dont have all that much to cut either, its a drawback to being tall.
| Midnight_Gold | 05-06-2004 04:52 PM |
Ha! At 135, I would almost say I win, but I think I have close to 70 lbs worth of dynamat in my car :( .
- Miranda
- Miranda
| Julian | 05-06-2004 07:12 PM |
Drive around on a quarter-tank of gas. 75 pounds right there, and you don't have to do anything!
| 03WRXMA | 05-06-2004 07:23 PM |
Go on a diet and take a long pee, best moD EVar! And FREE :D
| IronMonkeyL255 | 05-06-2004 07:26 PM |
One of the suggestions I got from a veteran auto-Xer when I started: Never auto-X on a full tank of gas. Go out with a quarter tank or less.
If you want to go really drastic, Lexan windows. They now have a special scratch-resistant coating that makes it a more viable option on a daily-driven car.
You could also get rid of the ABS. All the equipment from that weighs quite a bit.
By wanting to keep the functionality as a daily driver, that automatically cuts out some mods. You can always remove the rear seats pretty easily for the weekend if you are going auto-Xing.
If you want to go really drastic, Lexan windows. They now have a special scratch-resistant coating that makes it a more viable option on a daily-driven car.
You could also get rid of the ABS. All the equipment from that weighs quite a bit.
By wanting to keep the functionality as a daily driver, that automatically cuts out some mods. You can always remove the rear seats pretty easily for the weekend if you are going auto-Xing.
| WanganRunner | 05-06-2004 07:52 PM |
What's your budget?
Dry Carbon Fiber doors are like $3000.
Dry Carbon Fiber doors are like $3000.
| jason2004STI | 05-06-2004 07:58 PM |
Light weight wheels. Reduce your unsprung weight and you will accelerate and brake faster. my $0.02 :)
Peace
Jason
I love my STi :)
Peace
Jason
I love my STi :)
| Stone Monkey | 05-06-2004 08:00 PM |
extreme weight loss
�
�
I have seen a carbon fiber driveshaft.....
| jandro62 | 05-06-2004 08:06 PM |
about the 1/4 tank of gas...
I'm not aware of the fuel pickup location in the tank, however, running with that little fuel can cause the gasoline to slosh around the tank under cornering loads and move away from the pickup, which can starve the car for gas. I'd run closer to 1/2 tank.
I'm not aware of the fuel pickup location in the tank, however, running with that little fuel can cause the gasoline to slosh around the tank under cornering loads and move away from the pickup, which can starve the car for gas. I'd run closer to 1/2 tank.
| LABARINTH | 05-06-2004 09:19 PM |
thanx for the input guys....I have just one last question....if I do happen to lose a good amount a weight what has to be done to the suspension (if anything)...it is my understanding that the suspension is tuned for a specific weight...and if I alter that weight it could actually make handling worse....what do I have to do in order to make sure the car handles the same or better after the weight loss? Also, how much weight is ok to lose without having to touch the suspension (I know you guys prolly wont have any hard numbers on this one...but guesses and approximations are fine by me)?
| asbWRX04 | 05-06-2004 09:31 PM |
go on atkins diet and eat a lot of fiber rich foods and take a big ass dump!
woo hoo it's gettin stinky up in here
amRik
woo hoo it's gettin stinky up in here
amRik
| Chromer | 05-06-2004 11:09 PM |
Something to think about -- weight is "worst" at the extremeties of the car. Best "bang for the buck" would likely be the bumper beams. Even if you don't replace the battery, move it closer to the center of the car. Like in the trunk, tight up against the back seat.
I wouldn't worry about the suspension. You'll be lucky to make a 5% change in the weight of the car. It'll just act like it is sprung 5% stiffer...
I wouldn't worry about the suspension. You'll be lucky to make a 5% change in the weight of the car. It'll just act like it is sprung 5% stiffer...
| nhluhr | 05-07-2004 01:29 AM |
[QUOTE][i]Originally posted by Chromer[/i]
[B] Something to think about -- weight is "worst" at the extremeties of the car. Best "bang for the buck" would likely be the bumper beams. Even if you don't replace the battery, move it closer to the center of the car. Like in the trunk, tight up against the back seat.
I wouldn't worry about the suspension. You'll be lucky to make a 5% change in the weight of the car. It'll just act like it is sprung 5% stiffer... [/B][/QUOTE]
interestingly, the APS FMIC kit makes for a drastic weight reduction at the front end as well as removing weight from the top.
The intercooler core when combined with their beam is lighter (by far) than the stock bumper beam. And then you get to lose the heavy stock TMIC and you also have to use a smaller, lighter 51R battery.
[B] Something to think about -- weight is "worst" at the extremeties of the car. Best "bang for the buck" would likely be the bumper beams. Even if you don't replace the battery, move it closer to the center of the car. Like in the trunk, tight up against the back seat.
I wouldn't worry about the suspension. You'll be lucky to make a 5% change in the weight of the car. It'll just act like it is sprung 5% stiffer... [/B][/QUOTE]
interestingly, the APS FMIC kit makes for a drastic weight reduction at the front end as well as removing weight from the top.
The intercooler core when combined with their beam is lighter (by far) than the stock bumper beam. And then you get to lose the heavy stock TMIC and you also have to use a smaller, lighter 51R battery.
| gezebo | 05-07-2004 11:46 AM |
Driving Naked should shed about 10 lbs :lol: (read your track rules 1st) haha
| WanganRunner | 05-07-2004 05:57 PM |
I think the 350Z has a carbon fiber driveshaft stock, or at least one factory version of the Japanese model does.
| lawn boy | 05-08-2004 11:06 AM |
get the spare tire/tools/jack/trunk carpet/wooden thing out immidiately. I felt a difference. THats nearly 50pounds worht of stuff in the rear right there. Next up for me, lighter turboback mating to my alreayd much lighter muffler and dry cell battery :cool:
| afpdl | 05-08-2004 08:50 PM |
My cat back weighs nothing.
;)
;)
| Butt Dyno | 05-09-2004 12:26 AM |
The rule of thumb I have heard is saving 100 lbs = 1 hp. Not worth it to make your car undriveable, IMHO.. Even if I'm off by a factor of 10 (possible), saving 300 lbs (unlikely) is 30 hp, which is attainable with something that will only make your car lighter (an exhaust that is ligher than stock, and a reflash).
Not saying it's stupid; just that the effort might not be worth the benefit.
john
Not saying it's stupid; just that the effort might not be worth the benefit.
john
| wgknestrick | 05-09-2004 01:08 AM |
it's 10lbs = 1HP
| sirbryanclark | 05-09-2004 01:13 AM |
best place to lose weight.... tires and wheels, you will feel the difference right away! do it...
| afpdl | 05-09-2004 01:42 AM |
[QUOTE][i]Originally posted by ButtDyno[/i]
[B] The rule of thumb I have heard is saving 100 lbs = 1 hp. john [/B][/QUOTE]
Thats way way off but you dont shed weight to get more hp you shed weight to acclerate faster, brake faster, turn faster it all adds up.
[B] The rule of thumb I have heard is saving 100 lbs = 1 hp. john [/B][/QUOTE]
Thats way way off but you dont shed weight to get more hp you shed weight to acclerate faster, brake faster, turn faster it all adds up.
| lawn boy | 05-09-2004 11:14 AM |
[QUOTE][i]Originally posted by sirbryanclark [/i]
[B]best place to lose weight.... tires and wheels, you will feel the difference right away! do it... [/B][/QUOTE]
The STi's wheels are already forged and lightweight
[B]best place to lose weight.... tires and wheels, you will feel the difference right away! do it... [/B][/QUOTE]
The STi's wheels are already forged and lightweight
| pittkid333 | 05-09-2004 11:21 AM |
[QUOTE][i]Originally posted by WanganRunner [/i]
[B]I think the 350Z has a carbon fiber driveshaft stock, or at least one factory version of the Japanese model does. [/B][/QUOTE]
The US model does too, but they say it's for saftey because it will shatter in a crash
[B]I think the 350Z has a carbon fiber driveshaft stock, or at least one factory version of the Japanese model does. [/B][/QUOTE]
The US model does too, but they say it's for saftey because it will shatter in a crash
| subaru mike | 05-09-2004 02:14 PM |
Rear section out of the back, as stated before
Seats, carpet, spare, tools, jack. 3rs brake light, plastic modling, rear airbag sensors, trunk release, tow hook, door panels, speakers, sound proofing. No exhaust :)
In the fron cabin doors again, glove box, sun visors, dome light/dome liner, air bags, race seat, (no passenger) plastic trim, radio, with no ac why keep the climat controls... Lexan
As said before remove front/rear, beams. Remove heat shields, remove your cats, undercarrage dust shield, dust shelds from rims, lighter header, battery s said before. Get rid of all the sound proofing in the car. Light weight lug nuts/rims/tires, go for 15's, remove the hood liner/scoop liner, abs/ac, basic intake, fuse panel...
No you have a pretty light car, oh yeah get a much smaller fuel cell like 2 gallons...
:huh: mmm maybe thats a little to hardcore
Seats, carpet, spare, tools, jack. 3rs brake light, plastic modling, rear airbag sensors, trunk release, tow hook, door panels, speakers, sound proofing. No exhaust :)
In the fron cabin doors again, glove box, sun visors, dome light/dome liner, air bags, race seat, (no passenger) plastic trim, radio, with no ac why keep the climat controls... Lexan
As said before remove front/rear, beams. Remove heat shields, remove your cats, undercarrage dust shield, dust shelds from rims, lighter header, battery s said before. Get rid of all the sound proofing in the car. Light weight lug nuts/rims/tires, go for 15's, remove the hood liner/scoop liner, abs/ac, basic intake, fuse panel...
No you have a pretty light car, oh yeah get a much smaller fuel cell like 2 gallons...
:huh: mmm maybe thats a little to hardcore
| afpdl | 05-09-2004 05:40 PM |
[QUOTE][i]Originally posted by subaru mike[/i]
[B] Rear section out of the back, :huh: mmm maybe thats a little to hardcore [/B][/QUOTE]
If I have my car in 10 years that about describes what will happen to it.;)
[B] Rear section out of the back, :huh: mmm maybe thats a little to hardcore [/B][/QUOTE]
If I have my car in 10 years that about describes what will happen to it.;)
| scubydrew | 05-09-2004 08:53 PM |
impreza brighton=lightweight
| GotHP? | 05-09-2004 10:52 PM |
I've done most of the non-hardcore above mentioned mods, and a few others that nobody has mentioned. Removed the steel hood prop and instead use a carbon fiber tube that weighs almost nothing (seriously it's a few ounces), replaced the steel battery hold down bar with a carbon fiber plate. I've been working with a CA company to make a CF driveshaft, but we're having trouble making the correct ends at a decent price. I've also contacted a UK company who already has a CF driveshaft on the market for the UK STi - I'm trying to find out if it'll fit ours. Any other comments on Ti catbacks (magnaflow, Invidia?) That's next...
| afpdl | 05-09-2004 11:21 PM |
[QUOTE][i]Originally posted by GotHP?[/i]
[B] Any other comments on Ti catbacks (magnaflow, Invidia?) That's next... [/B][/QUOTE]
Lightweight cat back= 3 inch turn down at the end of the downpipe.
[B] Any other comments on Ti catbacks (magnaflow, Invidia?) That's next... [/B][/QUOTE]
Lightweight cat back= 3 inch turn down at the end of the downpipe.
| jacsmi | 05-10-2004 01:44 PM |
here is a link that should help
[URL=http://www.oakos.com/wrx/weights.htm]wrx weights[/URL]
[URL=http://www.oakos.com/wrx/weights.htm]wrx weights[/URL]
| stapleking | 05-10-2004 02:17 PM |
As mentioned above, there's virtually no weight svgs. to be had with CF hood. The same is true with trunk lid; the stock one weighs 20 lbs. and a CF one the same. Reason is [also as already mentioned], the CF one has a fair amount of fiberglass re-inforcement for hardware and spoiler fitments. A truly light CF lid would not be functional for a street car. Some can be saved with a true CF wing, but mega-$$.
6 lbs. per wheel can be saved over stock by going with Volk or SSR Comp. w/ Toyo Proxis. Unspring weight is very important, beyond over-all weight savings. BTW, the old drag racer's rule was [is], "100 lbs. is worth a tenth [.1]", as in 1/4 mile et. However, fact is, wieght saving affects all aspects of driving dynamics. Also durability as light cars break less sh**t.
You can get the STi down to 3150 lbs. and still be more or less streetable, but it will be harsh and noisy [more than it already is]. Hands down, the best investment in performance is in the driver [that'd be YOU, bucko']. Go to driver's schools, practise, keep good tires and brakes on the car. You WILL be formidable.
My 3 kopecks worth......
6 lbs. per wheel can be saved over stock by going with Volk or SSR Comp. w/ Toyo Proxis. Unspring weight is very important, beyond over-all weight savings. BTW, the old drag racer's rule was [is], "100 lbs. is worth a tenth [.1]", as in 1/4 mile et. However, fact is, wieght saving affects all aspects of driving dynamics. Also durability as light cars break less sh**t.
You can get the STi down to 3150 lbs. and still be more or less streetable, but it will be harsh and noisy [more than it already is]. Hands down, the best investment in performance is in the driver [that'd be YOU, bucko']. Go to driver's schools, practise, keep good tires and brakes on the car. You WILL be formidable.
My 3 kopecks worth......
| JDM addict | 05-10-2004 07:57 PM |
[QUOTE][i]Originally posted by ButtDyno [/i]
[B]The rule of thumb I have heard is saving 100 lbs = 1 hp.
john [/B][/QUOTE]
100 lbs = 10 hp
Losing weight is a lot of fun.
ADDICT
[B]The rule of thumb I have heard is saving 100 lbs = 1 hp.
john [/B][/QUOTE]
100 lbs = 10 hp
Losing weight is a lot of fun.
ADDICT
| JDM addict | 05-10-2004 08:00 PM |
[QUOTE][i]Originally posted by GotHP? [/i]
[B] I've also contacted a UK company who already has a CF driveshaft on the market for the UK STi - I'm trying to find out if it'll fit ours. [/B][/QUOTE]
Any more infos about the CF driveshaft? weight, price? Aluminum joint or steel joint?
I am very interested.
ADDICT
[B] I've also contacted a UK company who already has a CF driveshaft on the market for the UK STi - I'm trying to find out if it'll fit ours. [/B][/QUOTE]
Any more infos about the CF driveshaft? weight, price? Aluminum joint or steel joint?
I am very interested.
ADDICT
| casualsurfer | 05-11-2004 02:39 AM |
[QUOTE][i]Originally posted by stapleking [/i]
[B]6 lbs. per wheel can be saved over stock by going with Volk or SSR Comp. w/ Toyo Proxis. [/B][/QUOTE]
would this be on 16" wheels or 17" wheels? thanks!
[B]6 lbs. per wheel can be saved over stock by going with Volk or SSR Comp. w/ Toyo Proxis. [/B][/QUOTE]
would this be on 16" wheels or 17" wheels? thanks!
| oldmansan | 05-11-2004 04:18 AM |
Would almost have
�
�
to be 16s. The stock wheel/tire combo is light. I went with 16 X 7.5 SSR C's with Michelin Pilot Sports. Stiff sidewall and about 5 lbs per corner lighter than the S-03s. They're toast now so looking at the Avons/Hoosiers.
San
San
| stapleking | 05-11-2004 12:42 PM |
Actually, my numbers come from 18"s. I weighed the respective wheel/tire combos on our UPS scale here at work. 17's would be a pound or so lighter.
BTW, tire size [which also makes a difference] is 225/40/18. For pure track use, you might go with 235 or 245, but will pay a weight penalty of a pound or two. Also, these weights are based on radial DOT tires; pure race and/or bias tires are lighter.
Hope this info is of use...... :cool:
BTW, tire size [which also makes a difference] is 225/40/18. For pure track use, you might go with 235 or 245, but will pay a weight penalty of a pound or two. Also, these weights are based on radial DOT tires; pure race and/or bias tires are lighter.
Hope this info is of use...... :cool:
| casualsurfer | 05-11-2004 07:58 PM |
Great info here. I don't plan on tracking or racing the car, but looking to reduce the sidewall by using a smaller diameter tire - this should also increase the final gear ratio a little bit...
| ScreaminFast | 05-12-2004 09:23 AM |
Here's what I have done:
APS FMIC (lightweight front)
Odyssey PC680 13.5lb battery
JIC 505Ti full Titanium catback
Momo CUP racing seats
Removed back seats and all hardware
Removed everything in the trunk
Removed front U-shaped subframe (replaced with cusco V2)
CF hood
Removed ALL stock seat belts and all hardware for them
Momo Jet Black Steering wheel
Removed metal knee bar on drivers side
Removed metal box under center console
Removed green brackets of death
Removed Front plastic splash guard
No glove box right now, but i'll put it back in for shows. ;)
Hopefully I'll be down in the neighborhood of 2800 w/ a 1/4 tank of gas :)
APS FMIC (lightweight front)
Odyssey PC680 13.5lb battery
JIC 505Ti full Titanium catback
Momo CUP racing seats
Removed back seats and all hardware
Removed everything in the trunk
Removed front U-shaped subframe (replaced with cusco V2)
CF hood
Removed ALL stock seat belts and all hardware for them
Momo Jet Black Steering wheel
Removed metal knee bar on drivers side
Removed metal box under center console
Removed green brackets of death
Removed Front plastic splash guard
No glove box right now, but i'll put it back in for shows. ;)
Hopefully I'll be down in the neighborhood of 2800 w/ a 1/4 tank of gas :)
| JDM addict | 05-12-2004 12:27 PM |
Nice work ;)
[QUOTE][i]Originally posted by ScreaminFast [/i]
[B] Removed front U-shaped subframe (replaced with cusco V2)
[/B][/QUOTE]
Notice any negative effect from this mod? Do the frame twist more?
[QUOTE][i]Originally posted by ScreaminFast [/i]
[B]
Removed metal knee bar on drivers side
Removed green brackets of death [/B][/QUOTE]
I got everything else, but can you tell me a little more about the above 2 items? I don't know what you were referring to.
Thanks ahead.
ADDICT
[QUOTE][i]Originally posted by ScreaminFast [/i]
[B] Removed front U-shaped subframe (replaced with cusco V2)
[/B][/QUOTE]
Notice any negative effect from this mod? Do the frame twist more?
[QUOTE][i]Originally posted by ScreaminFast [/i]
[B]
Removed metal knee bar on drivers side
Removed green brackets of death [/B][/QUOTE]
I got everything else, but can you tell me a little more about the above 2 items? I don't know what you were referring to.
Thanks ahead.
ADDICT
| scoobydrew06 | 05-12-2004 05:15 PM |
diet
| 03WRXMA | 05-12-2004 05:18 PM |
[QUOTE][i]Originally posted by JDM addict [/i]
[B]Removed metal knee bar on drivers side
Removed green brackets of death [/B][/QUOTE]
The GBOD surround the fuel injectors on the 02/03's, basically to prevent the strut tower from cutting into the fuel lines in a crash, but the 04 cars dont have them... :huh:
The knee bar is inside the trim below the wheel, it prevents your legs from getting cut off/destroyed in a crash.
[B]Removed metal knee bar on drivers side
Removed green brackets of death [/B][/QUOTE]
The GBOD surround the fuel injectors on the 02/03's, basically to prevent the strut tower from cutting into the fuel lines in a crash, but the 04 cars dont have them... :huh:
The knee bar is inside the trim below the wheel, it prevents your legs from getting cut off/destroyed in a crash.
Không có nhận xét nào:
Đăng nhận xét