Here’s some pics of some Harley Davidson EVO cylinders, or jugs, we had in for machine work. The cylinders needed to be bored & honed to some new KB pistons. The original cylinder jugs were barrel shaped, larger in the middle, pretty bad & they didn’t come in straight until after the required finished size. We were able to source a replacement set of cylinders which were in much better shape. We first bored the cylinders & then finished them to size by honing with our BHJ torque plate fixtures. Torque Plate Honing stresses the jugs similar to when they are assembled on the engine which provides a much better ring seal.
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