4 Piston Racing Short block assembly: Chamfer and debur all sharp edges and oil galleys, chamfer bearing housings and bottom of cylinder bore High pressure thorough cleaning of oil galleys in block and crankshaft Mic pistons and verify straight bore with precision Sunnen bore gauge, set piston to wall clearance for your application Set ring gap for specific application Balance rotating assembly Set bearing clearances Race preparation and debur to piston dome Precision assembly in clean room We build each engine to suit individual racing application... Drag race, road race, hill climb, street use, etc. Components Heavy Duty Ductile Iron Sleeve Block - Diamond honed with torque plate for straightness. Copper O-Ring** OEM Honda Crank - OEM Forged Honda Crankshaft. 4P I-Beam Connecting Rods 4P Wiseco Piston - 86mm bore, custom 88mm available ACL Race Bearings