The woodruff key shattered on my d16y7 leaving the pulley in free spin. this left me no choice but to put my 1000lbs impact wrench to the crank bolt. The bolt came out, but, left behind 1/5 of itself in the thread. Already attempted to extract the leftover bolt, but, to no success. Gonna drill and helicoil.

Also, I cant find my helm. Does anyone know the thread size to the crank bolt (96 civic d16y7)?

Ive succesfully helicoiled plenty of screwups, but, never done it to the crankshaft pully bolt threads. Has anyone done this before? Wanna know how it holds up to 130 ft lbs of tq.

Thanks in advance HT. Trying to get my beater running again. My truck is killing me with CA gas prices.