A turbulence bar assembly for a cylinder that extends in an axial direction includes a plurality of bars that extend in the axial direction and at least one hoop. The at least one hoop has one or more hoop segments that are connected to the plurality of bars and one or more couplers that are in engagement with the one or more hoop segments to expand and contract a radial dimension of the at least one hoop in response to movement of an adjustment block in the axial direction.