Spare Motors...gotta have a couple.

Machine shop called....Scat 4 inch 4340 crank is balanced can pick up in morning....

The old crank....MP (Scat?) 4340 crank has two slugs of heavy metal in the front and rear counter weights.....

Using same rods and pistons....this Scat crank has 200 grams removed from the rear counter weight and 80 grams removed from the front.....