ACL Race Series Main Bearing Set Fits Toyota 1Hz 1Hdt 7M8397HX-STD

Located in Australia, ACL has been providing an extensive replacement product range to a global aftermarket for over 70 years. Their reputation for robust metallurgy, quality, precision, innovation &, of course, performance shows through their products.SPECIFICATIONS-High Strength Overlay Plate With Reduced Thickness for Improved Fatigue Properties-Hardened Steel Backs on All Rod Bearings to Improve Bearing Lining & Retention-Increased Crush for Improved Bearing Retention-Elimination of Flash Plating on Back of Bearings & Maximise Grip Between Bearings & Housing-Increased Eccentricity to Compensate for Bore Distortion at High RPM & Assist in Formation of Hydrodynamic Oil Films-3/4 Grooved Main Bearings to Optimise Bearing Load Carrying Surface Area & Oil Flow to Conrod Bearings-Tight Consistent Wall Tolerances to Help Maintain Consistent Clearances-Enlarged ID Chamfers on Bearing Edges Where Required to Accomodate Large Fillet Radius on Performance Crankshafts-Half Type: Upper & Lower-Material: F780-Min. Std Shaft Size: 66,995 mm / 2.6376 in-Max Std Shaft Size: 67,005 mm / 2.6380 in-Min. Std Tunnel Size: 70,982 mm / 2.7946 in-Max Std Tunnel Size: 71 mm / 2.7953 in-Max Wall at Crown: 1,966 mm / 0.0774 in-Max Overall Length: 22,1 mm / 0.8701 in