ACL Race Series connecting rod bearings for Toyota 1JZ, 2JZ
Fits
Toyota
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- Collection at our shopCartagena, Spain
ACL Race Series connecting rod bearing set for Toyota 1JZ, 2JZ, part number 6B8100H. This is ACL's competition line, the same used in drift, circuit, and drag racing engines.
The structure is tri-metal, with a steel base, copper-lead-tin lining, a nickel barrier, and a soft overlay that conforms and prevents seizure even under very high loads. On connecting rod bearings, the overlay is thinner to better withstand fatigue.
Compared to a standard bearing, the Race range features greater housing interference, which improves retention and heat transfer, as well as increased eccentricity to promote an oil film when the engine is revving high.
In standard size, ACL specifies this for a connecting rod journal of 51.981 to 52.000 mm, with a bearing width of 19.3 mm. For that diameter, they recommend an oil clearance of about 0.055 to 0.065 mm, measured with a micrometer and bore gauge. If the crankshaft has been reground, the measurement changes.
They do not have the silver-tin final plating of standard bearings, so their dark color—ranging from brown to black to bluish—is the factory finish and does not indicate any defect. ACL advises against polishing the bearing surface to adjust clearance; if more is needed, they are combined with the HX version, which provides 0.025 mm of additional clearance.
Not sure if your crankshaft is standard size? Write to us with your engine code and we will help you choose.