cgsheen was letting people know that the new Nissan fan he bought flexed and let the blades get pulled in to his radiator. That's a concern to be aware of. Maybe the replacment fans are more flexible than factory issued fans.

I was responding to suggest that maybe it was his fan clutch that caused it, not the qualities of the fan.

Could also be that his Koyo radiator did not flow as much air as the factory radiator and this caused a lower pressure inside the fan shroud.

Just trying to save darom's radiator.

Thanks guys, I will measure the old/cracked fan vs the new replacement one.

I am actually facing a different issue on top of the cracked fan blades. After I removed/reinstalled the tranny and installed a new TC, I started hearing some hitting noises coming from the front of the car.

I think my fan got too close to my HALL sensor mount and would occasionally hit it (especially when warmed up). I fab'ed 2 shims to move the clutch/fan assembly forward by 3 mm:

And here is how close the fan is to my HALL sensor mount: