ACL Race Series Main Bearings Suit Toyota 1JZ-GE/GTE 2JZ-GE/GTE

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

7M8103H-STD

Specifications for STD size only

Sizes	STD, .025, .25
Oil Clearance
Half Type	Upper & lower
Material	F780
Min. Std Shaft Size	61,984 mm / 2.4403 in
Max. Std Shaft Size	62,001 mm / 2.4410 in
Min. Std Tunnel Size	66,02 mm / 2.5992 in
Max. Std Tunnel Size	66,035 mm / 2.5998 in
Max Wall at Crown	2,004 mm / 0.0789 in
Max Overall Length	20 mm / 0.7874 in (8103H) 23 mm / 0.9055 in (8104H)
Notes
Diagrams	8103H-L (2,3,4,5,6,7) 8103H-U (2,3,4,5,6,7) 8104H-L (1) 8104H-U (1)

 

APPLICATION

Make	Engine	Description	Vehicles
Toyota	1JZ-GE	Toyota 1JZ-GE 2492cc Inline6 DOHC 4v
Toyota	1JZ-GTE	Toyota 1JZ-GTE 2492cc Inline6 DOHC 4v Twin Turbo	Toyota Soarer Z30
Toyota	2JZ-GE	Toyota 2JZ-GE 2997cc Inline6 DOHC 4v	Toyota Supra JZA80
Toyota	2JZ-GTE	Toyota 2JZ-GTE 2997cc Inline6 DOHC 4v Twin Turbo	Toyota Supra JZA80

• 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