ACL Engine Bearings 4B1906HX ACL Race Series Performance Engine Bearings
ACL Race Series Performance Engine Bearings (4B1906HX) for a 1988-2009 Honda. Rod Bearing Set w/ Extra Oil Clearance | F23A1/4/5/7 - K20A3.
All Buying Options:
|ACL Engine Connecting Rod Bearing Set 4B1906HX-STD;
|ACL Race Rod Bearings For Acura/Honda K20A3/98+ Honda F23A +.001" Oil Clearance
|ACL Standard w/ Oil Clearance Rod Bea for Acura/Honda K20A3 / 98+ Honda F23A
|ACL Race Bearing Komatsu 4D105 - 6D105 Rod Bearings Set 4B1906HX
|ACL for Acura/Honda K20A3 / 98+ Honda F23A Standard Size High Performance w/
See partnumber notes and applications notes above for specific product information.
ACL performance engine bearings are trimetal bearings designed to withstand higher RPM conditions for many of the popular 4, 6, and 8 cylinder engine applications. They feature a high strength overlay plate that has a reduced thickness with helps prevent fatigue. The hardened steel backs on the rod bearings help assist with bearing retention in the housing and support the bearing lining. The bearings have increased crush which improves bearing retention as well as tight consistent wall tolerances to maintain a consistent clearance. The flash plating on the back of the bearings was removed to increase the grip between the housing and bearing and improve heat transfer through the bearings. The eccentricity was increased to help with bore distortion at high rpm and help create hydrodynamic oil films. The main bearings are ¾ grooved to optimize oil flow to the connecting rod bearings and the bearing load carrying surface. ID chamfers on the bearing edge were enlarged when required to help fit large fillet radius on performance crankshafts.
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