Main Journal Oil Clearance


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Hello, back in a starlet after selling my old GT 7 years ago. I have bought another GT and in the process of a full engine rebuild. I have found some specs online for the main crank journal bearings but I'm a bit confused.

Main journal oil clearance:

STD = 0.016-0.049mm

U/S 0.25 = 0.017-0.061mm

Limit = 0.08mm

I have a polished crank with new std size ACL main bearings measuring 0.050mm using a plastigauge. Are these still in spec?



Member +
Limit is when you need to regrind the crank.
You will be fine. Make sure you use the correct oil for your climate.
I use Shell Helix HX3