You're looking at about 0.1s per hundred pounds in the quarter mile. Besides removing the bumper beams, the heaviest parts are the doors, hood, and hatch (if you have one). All of these parts already exist in carbon. A carbon hatch is flimsy, and I wouldn't use carbon doors without a cage and serious door bars.

I lost 20 lbs by removing the stock springs/struts and adding JIC FLT-A1's.

 

Replace all glass windows with lexan plastic. Glass is heavy.

 

The back hatch glass is easily the biggest piece (that you'd ever replace) and it's only 22 lbs. Yes I weighed it myself.

 

22lbs off a race car would be alot but on dd it'd be like me not working out for a few months,lmao like i say just dont eat then your car will be lighter. hahahaha

 

Didn't that red S13 hatch reach 160 mph a few years ago on a stock chassis/body?

 

your an idiot.

 

i want to see pics of your car. you make it sound like you are building a land speed car

 

hit up google and find out what the weight difference is between steel and fiberglass and carbon and whatever else you can think of. then you'll be able to figure how much weight you would loose and then do the math to get you your new hp to weight ratio. The problem is if you make the panel really lightweight, you'll have to add supports and what not, you might find that it is a wash in the end.

 

Go ask sean, jonas, mikey, or any secret service members back in the day. It ran on 28th street. Take your insulting comment back.
The guy is trying to capture or surpass the land speed record, not a 1/4 mile runner.

 

Yes I know Sandy Trogdor did 190mph or some crazy number when it was Enthalpy's car,but the whole making every panel out of fiberglass is fucked.