Before installing piston/connecting rod assemblies, clean cylinder walls and chamfer top edges. Remove the cap from the first connecting rod, clean bearing surfaces, and place new upper bearing insert. Position piston ring gaps, lubricate with engine oil, and attach a piston ring compressor. Rotate the crankshaft, apply oil to cylinder walls, and insert the assembly into the cylinder bore. Check the connecting rod bearing oil clearance using Plastigage. If clearance is incorrect, clean bearing inserts and reapply grease. Repeat for remaining pistons/connecting rods, check for binding, and compare rod end play to specifications.