Too heavy?
 

Is the 4 door accord too heavy to do a 1/4 mile in 11 or less sec?

It depends with enough money you could do it. It also depends on which accord your talking about. Generation wise. To be honest if you want to go that fast you need to get something lighter. Lets see h22a accord run 14s then turbo it 12s maybe then add nitrous 11s?? Now thats being very generous but your probably gonnahave to do all those 3 plus rebuild everything in the h22a or you could get a huge turbo and make your block handle lots of psi.

the car is a 1999 ex sedan

well I know you could get it into the 14 range with easy and keep the daily driver car you have working fine. If you wanted to get your accord going that fast it might nit be a wise decision on to drive it around alot. So..... I guess you just have to ask your self what do you want the car to do.

You'd have to totally strip it, but almost anything's possible with enough money.

yeah the 99's are kinda beefy. but hey i have an accord sedan too and im aspiring to make it fast so if you ever wanna talk, thats cool.