Recently I waz driven n I guess tha harmonic balancer came loose n fell off while I waz driving as well as tha timing belt n tha car just dropped rpms n shut off, I got it home n re did tha timing n made sure everything waz tight bt now when I try n start it sounds like a hi pitched humming, what kind of damage could occur when somethin like this happens

 

Does the engine crank when you try to start it?
Since your timing belt fell off, you could have smacked valved with pistons.

 

"Hi pitched humming." Sounds like the timing belt is too tight.

 

Does the engine start and run? If not, make sure the mechanical timing is correct and then compression test the cylinders.

 

Did you remember to put the key back in? This the small metal tab that locks the harmonic balancer in place

 

Tha timing is good n tha belts not super tight but it seems like its not gettin any compression n it won't start at all

 

Do a compression check and double check your timing belt to make sure you have it on right.
If not, sounds like you need to pull the head and inspect the valves for damage.

 

you probably didnt install the crank pulley on correctly.

redo it. check the butterfly washers and everything else.

honestly ive never heard of the crank pulley just falling off...

 

just buy a new engine pretty much your timing belt skip teeth and your fucked pretty much

 

Actually, it's amazing that, roughly about half the time, no engine damage happens.

 

umm you have a point but once your done pulling the head and checking and putting it back its like buying a long block from jap

 

I l pull it back apart to figure out what's wrong with it n hopefully everything inside is ok but I checked n it seems like tha timing is perfect, would somethin like that cause any damage to the lower block I am not worried about tha head I gt am extra 1 to change it oh with but I don't wanna pay to get it machined n put it on n I am still in tha same spot

 

You have at least some bent valves, maybe some cracked valve guides. It's unlikely that the pistons got damaged.
By loosing the t-belt you had the same effect as if the belt broke. If you're sure your timing is correct and it won't start there is no question why.
You can either swap the engine or pull the head and have a machine shop change all the bent parts and resurface it. Or you can buy another head. If you fix it you're looking at about $350 with repair, new gaskets, etc

 

Again, compression test the cylinders.

 

compression test ftw

 

Spelling and punctuation FTW. Use a torque wrench next time.

 

hahaha . yes always torque everything or atleast the important stuff. im just saying instead of wasting time and money buy a long block and swap it in about the same price and lower mileage

 

Yea I know stupid mistake on my part n tha only reason I am tryin to figure out what could have happened is cuz I did a fresh rebuild on it n it had only like 1000 miles bu now I am payin for not payin more attention to it

 

Mine has. That's what you get for installing a motor while slightly intoxicated. Lol. Sheared the "key" as well!