you should tell lotus that their engineering is flawed.

 

i believe you ment 100lbs=0.1 in the 1/4= 10hp

 

bump

 

https://www.evolutionm.net/forums/sh...ad.php?t=38496

 

Yea, I saw this post, it is no where near the same thing. That is for a list of the weight of all the stock parts so that you can replace them with lightweight ones. My question was how much of a difference does doing that really make.

However I feel my question has been answered satisfactorily and I appreciate it. I think I personally will focus on the unsprung weight and not worry about the rest.

One more quick question. I would assume big disk brake setups would weight more then the stock brakes? I dont mean just replacing the rotors, I mean doing the caliper, rotors, and pads. I assume this puts much more unsprung weight on the vehicle? The reason I ask is because a big disk brake upgrade is one of the first mods I will do because I am a HELL of an aggressive driver and I like to be able to stop quickly. I would obviously trade the weight for better stopping power, I was just wondering if it was possible to get the best of both worlds. Thanks.




-Sayajin

 

Holy Shnikeys!!! Stock rotors weigh 21lbs each and if you say Girodisc's save 12lbs each that means they weigh...9lbs!

A 9 lb rotor doesn't have enough mass to stop a Lotus Elise, much less an Evo. Wishful thinking on your part but you'd be lucky to shave about 12 pounds TOTAL by replacing your rotors to lighter ones on all 4 corners.

 

You want your car to handle and perform better on a roadrace/track enviroment you need to do the "Driver Mod" first. If you have not spent hours with a instructor or been to Barber, Bondurant, Reyes than you probably can't drive anyway. Always invest your money in the driver before the car!

In the 1/4 mile arena HP is much cheaper than weight when your trying to maintain daily driving duties. Carbon fiber this, lightweight rims that, etc etc might get you 75lbs all for 3K. You can add some serious HP for 3K.

I'd just put on a lightweight exhuast, drop the spare/jack, and lightweight batter and you'll be in the 3175lb range.

Good luck this discussion could go on forever.

 

"The fronts saved about 6.5lbs and the rear saved about 7lbs or so for a total of 13.5lbs" https://www.evolutionm.net/forums/sh...light=girodisc

about 3.25 lbs each in the front/ 3.5 lbs each in the rear.

The Stasis rotors save twice the weight. (about 7 lbs front each/6 lbs rear each), not sure which performs better though.

 

I think If you were going to repalace OEM parts (exhaust) you might as well try to find a nice light product. i am not talking about spending a grand on a ti exhaust. But a basic steel cat back, down pipe, cat delete. I also agree with the others about removing spare tire and other thinks that don't cost anything and also don't take away from the creature comforts your car has in stock trim.

 

If you don't think weight reduction makes that much difference, read this.

http://sportcompactcarweb.com/features/0208_scared/

 

adding weight to the breaks is not as bad as adding weight to the rims and adding weight to the rims is not as bad as the tires. the farther out the weight is on your wheels the more effect it has on performance. if you want nicer looking rims anyway i would look into lighter ones. as even 3lbs per rim is going to give you like ~10hp. i wouldn't get a different tire then the advans personally, but this is my dd. light weight flywheel when replacing clutch for $125 seems worth it.

best lightweight mod though=titanium lightweight turbine and internals for your turbo. 400-500 hundred bucks (then subtract whatever you can sell your stock turbo compressor for) for a tme 6.5 compressor housing for boost that hits @2300. whewwww weeee.

 

Here is something to play with , http://www.dsm.org/tools/calchp.htm . Change the lbs and you will get a idea ..

 

yeah, that was your original question. but after figuring out that losing weight does make a siginificant difference, you asked in what areas you can lose the weight. the thread i linked gives several possible places to lose weight, including unsprung weight, which is what you are looking for.

 

well for those that do not drag race, going on a jenny craig is very worthwhile. It yields later breaking, better turn-in as well as a more predictable car. I can't say too much for dragging, but for road=racing it makes a huge difference especially 4-600 lbs. That's a lot of money in bodywork.

 

Weight reduction is the best power mods you can do. It's free and makes your car handle better, gives you better gas milage, better left/right tansition, longer tire wear, and faster acceleration and breaking.