Don't know if these pistons could be of use for anyone for a 4BT or not. They were .020" Cummins 24v pistons that had .040" valve reliefs cut and coated by PolyDyn, Tops & skirts
This engine wanted to be a 4Cyl so bad it gave 5 & 6 the boot. Lol
The others are fine and the coating still looks...