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Product Description

Custom Performance Clevite H-Series 77, Tri-Metal Connecting Rod Bearings. H series bearings have a medium level of eccentricity, high crush, and rod bearings have a hardened steel back and thin overlay. These bearings also have enlarged chamfers for greater crankshaft fillet clearance and are made without flash plating for better seating. Bearings with 0.0001 extra clearance for standard size shafts and carry the suffix HX (X - extra clearance).Rod bearings are or without dowel holes (HD - with, H - without), main bearings are standard 180 degrees upper half grooving and with full 360 degrees grooving (H - 180 degrees, HG 360 degrees). Use H series bearings with crankshafts that have oversize fillets and where engines run in the medium to high RPM range. H series bearings should be used if contact patterns obtained with P series parts are too narrow. Contact patterns should ideally cover 2/3 to 3/4 of the bearing surface.