well was backing out of driveway after letting car warm up this morning.when car shut off. heres why. ever seen this? engine has 1500 miles on it. no signs of anything out of the ordinary
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never seen this happen before. didnt jump time or anything. looks like a freak thing that happened. im so lucky

 

Do you have balance shafts? Was that nut tq'd properly or impacted on?

 

no balance shafts and i torqued nut and double checked it before installing engine

 

+1

tightening the nut probably cracked the pulley and it finally let go.

 

^ just posted answer brah

 

It miraculously broke then brah

 

I've seen hairline fractures in that sprocket before.

 

im no expert, but that sucks.

 

def does. i wish somebody would upgrade these front cases. i never looked @ it up close to see in hairlines. dang it lol

 

thats what im thinking. just a freak break brah