Acura 13216-P72-003 Connecting Rod Bearing F (Pink) (Daido)

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When doing an engine overhaul, you will need to keep the old main and connecting rod bearings, since they may give insight into the engine's condition. Inadequate lubrication, dirt contamination, overloading, and corrosion all contribute to bearing failure which must be addressed prior to reassembly, or the problem will continue to occur. Remove the bearings from their location and arrange them on a clean surface for matching problems when inspecting the bearings with the crankshaft journal. Foreign particles can get into the engine through various sources such as assembly debris, filter bypass, and machining debris, and can embed in the bearing material foreign particles can embed in the bearing material or, if large enough, cause scoring. In order to avoid such failures, all the components need to be completely cleaned and regular oil changes are necessary. Severe damage can result from lubricant breakdown arising from such factors, excessive heat, overloading, oil leakage and blocked passages. Bearing longevity is also a function of driving habits; a common contributor to fatigue failures is low speed, full throttle operation, while short trips dry out bearings and hasten corrosion. This can compound the problem, and may leave the engine without oil or with high points on bearings. If the originals are worn or the oil clearance is incorrect, use oil clearance measurements as a guide when selecting new bearings. When replacing main bearings, the color code of the new bearing should match that which is on the original, or obscured, and in the latter case, the markings stamped on the block and crankshaft should be consulted. The same is true with a stamped number indicating what bore size a connecting rod bearing was. Ultimately, bearing selection is based upon the oil clearance as a final determinant, although failing that, a dealer's assistance may be required.