Originally Posted by reddevil
however, pistons dont need to seat (right away) to cause knock....
I was thinking down the road. All though a non seated piston may not cause knock, it would still be nice for it to seat one day;-)
Also, dropping an unmeasured piston into a bore that you have not measured, but "think/hope is stock" and praying you are not running too much/too little clearance is asking for funny noises.