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

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MAIN BEARING - STD, .025, .25
  • 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-L
8103H-U (2,3,4,5,6,7)
8103H-U
8104H-L (1)
8104H-L
8104H-U (1)
8104H-U

 
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

Performance Engine Bearings
  • 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