I've asked this before...but

The motor has 133k on it. Since i plan to keep the car i will rebuild the motor.

Actually its going to be a 93 motor, i have the longblock torn down and its all good but it looks like the motor got extremely HOT and noticed it looks some of the piston rings are seized to come of the piston, so if its true the pistons are trash...

Plus I have this unknow piston slap in cyl 5, so does this mean that the pistons in my car are trash???

I was going to build the longblock and then after its done, pull my motor for the intake and accesories and etc. But i dont really have the money to get new pistons So should i pull the motor out of my car and see if i can use them?? the ones in the garage are hypereutectic and the ones in my car are forged..... So could this slap just be piston rings worn??? If so are the pistons reusable???

I am hoping a nice rebuild will fix whatever the **** is wrong with my motor....
I mean the car gets like 12mpg, i can hear lots of valvechatter and the car is slow. I am guessing this motor was beat to hell in its day and just needs refreshing????

Also what exactly is valve float and what causes it???
This roar is just strange.... It just sounds like the motor is screaming bloddy hell and getting ready to explode at any moment....

Also, i am pretty my balancer is ****ed, i mean when i try and adjust timing when i start the car. the marks i made on the balancer will jump left to right almost an inch for like 30 secs to a minute, then finally stop moving.

I set it to what the balancer says is 10degrees and i run 87, and i still hear some spark knock..... I know the balancer is hurting the internals and stuff, but can it also make the motor make strange noises? Like slapping and stuff???

If i bought a new balancer and put it on my car with the weak motor, by the time i rebuilt my motor, which shouldnt be too long. I should be able to reuse my new balancer???