[Barry_R]

Not sure how this interfaces with the other comments and questions.

We recently had our very first cast Scat crank breakage after 6 years. The engine was a 716 horsepower FE in a modest weight 9 second drag car. After perhaps 50 passes it broke off at the first rod journal, taking the main with it along with a bunch of secondary damage. Rods and pistons are/were still perfect with no signs of bearing distress.

I gave it a close but non-expert eyeball inspection and decided that it looked like a fillet radius fracture. Sent the piece back to Scat. They asked a couple questions regarding application and other components used. After citing the race usage and power level as being pretty high for a cast crank, they recommended we go to a steel one for this particular customer - which we did. They also sent a replacement cast crank to us as no charge without challenging us in any way. Perfect customer service in my opinion.