I've removed those rollers and I have a lightweight racing battery (11.5lbs vs stock 35lbs) This gave me much better handling and braking. I haven't lost any traction; that maybe attributed the a lowered car.

 

I have AAA so if i ever need a tow i'm all set. I going to take out all the trunk liner and see how much it weighs. Also for the mini battery my car is lowered and i don't have enough power for traction problems. When i race it's not like i peel out off the line.

 

Yeah most of us dont have to worry about spinning out. The battery sounds like a good idea, I may do that soon and put it in the trunk. Here is a link for battery relocation.https://www.evolutionm.net/forums/sh...ad.php?t=57954 That should help balance things out some. I also plan to remove my custom sub box that weighs like 80lbs.

 

You're contradicting yourself here some- you're saying it's a good idea to remove the rollers, then you're saying it's a bad idea.

For autocross it's a very good idea to remove weight from the front. Less weight in the front means less rolling in a turn and less diving under braking. That weight is a lot of the reason we understeer so badly. And it imbalances the rear causing snap oversteer (that's when your rear end suddenly spins around when you're just expecting the rear to come back to center).
As for drag racing you lift the rear to balance out the lift in the front (because you shifted the weight forward when you raised the rear). For autocross you lower the rear below the front to keep the car from snap oversteering and the bonus is the rear takes its set better. In either case I'd think that considerable weight reduction would be beneficial (i.e. trunk, hood, seats, battery, rollers, etc).
It's also a good idea to autocross with a full tank of gas so you don't have all that fluid weight sloshing around unbalancing the car.

Part of the reason I posted the article above is to show how little effect weight reduction has on the car in terms of hp gained. a 200# reduction on that 300hp 350Z in the example nets 17hp. Our gearing ratios, weight/power ratio, etc being different will show a much lower gain.
Using the simple weight/power ratio sidebar in that article I found that a stock Lancer (120hp at 2600#) losing 100# will net about 4hp (that number gets larger as weight goes down and added hp goes up). It's closer to 3 hp if you use dyno numbers of about 100hp for a stock car. 3-4hp can be made up by driver skill more easily than it can be with weight reduction.

EDIT: clarified that weight reduction has little impact on Hp. It does help with load transfers which is good for racing including car-bowling (but you have to do things based on the style of racing- just like with ALL modification).

 

Well that i understand....

all i was saying that any weight saving is great when drag racing ( my experience - i've never autocrossed ) but i didn't understand the point about removing all that weight off the front and relocating it the the rear when weight is transferred to the rear anyways during a launch.

 

i dont knwo bout where you live, but here, waiting for triple A to come to the rescue can be anywhere from 10 min to 5 hours, just a word of wisdom, i took out my spare tire thinking i didnt need it, until the night i was coming home at 3 in the mornin w/ a buddy of mine, heard clunk clunk clunk and yes, u guessed it flat tire. luckily i was next to a gas station to plug the tire and fill it with air but not everyones lucky, i waited 5 hours in the rain once to have AAA come out at 4 in the mornin to jump my car(didnt want parents to know i was out that late )

 

Yeah i decided to leave the spare tire unless I'm going to the Strip. I'm going to take out the Trunk liner and that piece of wood covering the spire tire and try to find a new position for my subs.

 

I took off my rollers and my sub box yesterday. I can tell a huge difference with out that extra 60 pounds in my trunk. My rear bounces less and It feels great, I should have done that a long time ago. Now I can sell my subs and spend that money on a smaller battery.

 

Anyone have a link to get a light wieght battery?

 

yeh my idiot friends keep tellin me to get a massive sound system, but i dont need the extra weight. Im gonna do the rollers too. should help out a bit.

im not gonna do my tire though. im too unlucky. lol

 

Yeah do the rollers and a mini battery and that should be enough weight off the front end. Think about this Rollers, Mini Battery, Carbon Fiber Hood. That would be 50lb off the front end of your Lancer. I think that would be prefect and we still would have good traction only if you car is lowered though.

 

carbon fiber hood is pricey though, i would just spend the money on a performance mod, you would see more benifit from it.

 

I agree with you 100% but i was saying in the sprit of losing weight those 3 would make a huge difference.

 

yup yup.

and light wheels.

 

It's closer to 60lbs (57.5lbs) by my calculations. That would be worth it. Easier than me loosing wieght too. Plus if I lost that much wieght, I might fly right out the window next time I put it down.