ACL Race Series Conrod Bearings 6B2390H Suit Nissan RB30, RB30ET, VG30DETT

6B2390H-STD

Specifications for STD size only

Sizes	STD, .025, .25, .50
Oil Clearance
Half Type	Identical Halves
Material	F781
Min. Std Shaft Size	49,961 mm / 1.9670 in
Max. Std Shaft Size	49,974 mm / 1.9675 in
Min. Std Tunnel Size	53 mm / 2.0866 in
Max. Std Tunnel Size	53,011 mm / 2.0870 in
Max Wall at Crown	1,503 mm / 0.0592 in
Max Overall Length	17,1 mm / 0.6732 in
Notes
Diagrams	2390H

• 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.

ACL RACE SERIES CONROD BEARING SUIT NISSAN RB30, RB30ET, VG30DETT ~ 6B2390H-STD