I just swaped my JDM B16 into my crx and went fine i heard screachin sound from the engine... was my alt. belt and fixed it. When i fired it up again my crank pulley started wabling, when it warms up it vibrates a lil. has any body have any clue what it may be??? crank pulley not aligned right cause i had to put one on or is actually my crank shaft that is bent?????

 

i doubt the crankshaft is bent, make sure the pulley is tight

 

your crank pulley is probably bent....it happens sometimes when the motors are shipped.