ACL RACE SERIES CONROD BEARING SUIT NISSAN SR20DET (GTiR) ~ 4B2976H-.025

• High performance Trimetal engine bearings
• Designed to withstand higher RPM conditions
• High strength overlay plate with reduced thickness for improved fatigue properties

4B2976H-.025

Specifications for STD size only

Sizes	STD, .025, .25
Oil Clearance
Half Type	Identical halves
Material	F781
Min. Std Shaft Size	47,956 mm / 1.8880 in
Max. Std Shaft Size	47,974 mm / 1.8887 in
Min. Std Tunnel Size	51 mm / 2.0079 in
Max. Std Tunnel Size	51,013 mm / 2.0084 in
Max Wall at Crown	1,503 mm / 0.0592 in
Max Overall Length	19,1 mm / 0.7520 in
Notes
Diagrams	2976H

 

• HIGH STRENGTH OVERLAY PLATE with reduced thickness for improved fatigue properties
• HARDENED STEEL BACKS on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing.
• INCREASED CRUSH for improved bearing retention
• ELIMINATION OF FLASH PLATING on the back of the bearings to improve heat transfer through the bearings and to maximize the grip between the bearings and its housing.
• INCREASED ECCENTRICITY to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films.
• 3/4 GROOVED MAIN BEARINGS to optimize bearing load carrying surface area and oil flow to the conrod bearings.
• TIGHT CONSISTENT WALL TOLERANCES to help you maintain consistent clearances.
• ENLARGED ID CHAMFERS on bearing edges where required to accommodate large fillet radius on performance crankshafts.

Make	Engine	Description	Vehicles
Nissan	SR20DET (GTiR)	Nissan SR20DET (GTiR) 1998cc Inline4 DOHC 4v Turbo	Nissan Pulsar GTI-R N14