Lost 2 chunks on my crank pulley

[MC Hammered]

Any thoughts on how my crank pulley could have lost two chunks with a skid plate installed?

[CHIF8008]

i guessing you got in an accident that pushed the whole core support up (including your plate) into the pully?

[flyboyx]

Nah......either something got caught between the pulley and belt as it rotated or the pulley already had stress cracks from previous abuse/manufacturing defects. not a big deal. after all, the part is 25 years old.

[MC Hammered]

i guessing you got in an accident that pushed the whole core support up (including your plate) into the pully?

No accident. I had the timing belt done last month and the pulley was fine.

Reason I had the skidplate comment is the Raceskid's unit would block almost all road debris coming from below.

[vpilarrt]

Pulley got damaged when removed with a puller. Notice how the 2 damaged areas are 120° apart.

[MC Hammered]

Nah......either something got caught between the pulley and belt as it rotated or the pulley already had stress cracks from previous abuse/manufacturing defects. not a big deal. after all, the part is 25 years old.

25 year old part failing I can accept and just looking for a reason, and I did not consider stress cracks or a defect.

[AndrewBird]

Pulley got damaged when removed with a puller. Notice how the 2 damaged areas are 120° apart.

I would say this. Someone used a 3-jaw on it at some point and cracked it.

[slammin.e28]

I would say this. Someone used a 3-jaw on it at some point and cracked it.

Bingo....methinks.