I have a 96 accord with the 2.2l lx the harmonic balancer bolt will not brake free I have a 26 gallon air compresser 5 hp with a half in. Drive impact and it won't budge also used a breaker bar and I stood on it still nothing except bend the bar I even tried running the car then tried to break it free still nothing. So any help wood be great thanks

 

That has been covered a ton of times. You can search crank bolt.

There are a few ways to get the bolt out. Borrow/rent a bigger impact wrench. Heat. There is a special holder tool for the crank pulley. Then you can use a breaker bar and a cheater pipe to use brute force to break that bolt.

The easiest option would be to take it to a shop have them break the bolt loose, then snug it back on.

 

I couldn't find the crank holding tool in loaner tools at any nearby auto parts stores, so i made one. I bought a 1.5" pipe bushing at menards and welded it to a 1/4", 2" wide piece of flat stock approximately two feet long, then drilled a hole through the flat stock that my socket could fit through. Then used a breaker bar with a 6' cheater pipe, even at that, it took all I had to break it loose... But I did get it

 

POP/SNAP and you're happy