What would cause damage to the wear ring area of the impeller looking like it had the grooves machined on a lathe. The wear ring is scuffed, but not damaged.
Secondly, I have 3 Impellers and not one of them measures the same. (All are "A" for a 12JC Berkeley.
1. SS impeller (Detailed)
2. Original Berkeley "A" (orange)
3. Impeller bought in a kit from an online store.
Can anybody shed some light on the subject, if you look at the skirts of the impellers they all differ in height.