Abstract: Standard internal combustion engine transmissionm system having an engine crankshaft, clutch, flywheel connecting the engine to a drive gear box, a coupling arbor hub having a planar face and a complementary planar face on the flywheel, and a plurality of bolts securing the flywheel to the arbor hub with the planar faces abuting each other. The flywheel has a clutch surface which can be resurfaced by machining to extend the life of the flywheel. The invention reestablishes substantially the same position of the clutch surface after machining as when the clutch surface was new. It includes one or more planar annular plates having a pair of parallel surfaces spaced apart by the thickness T of the planar annular plate member, the thickness T being substantially the amount of metal removed during the machining of said surface, the annular plate member having a plurality of bolt holes, one for each of the bolts to pass therethrough, respectively.

Abstract: A flywheel capable of accommodating various automotive engines and transmission systems having different points of balance. The flywheel has a hub portion for securing to a crank shaft output arbor and a web portion integral with said hub portion on the periphery of said web portion and a weight is secured to the flywheel in such a way that the effective weight and effective position thereof is adjustable to a plurality of discrete positions, each of which is precisely correlated to each of the different points of balance of said various automotive engines having different points of balance, respectively. In a preferred embodiment, the weight is angularly and radially adjustable and is guided to each discrete position by at least one slot formed in the web, and a bolt passing through said weight and the slot. The bolts passing through the slots have safety attaching indentations therein for non-slip positive attachment of the weight in the different positions.