I know there is a **** ton of reviews for this topic but wanted some fresh and newer opinions. I have a GSR I'm rebuilding stock 81mm pistons and polished crank. Wanted to know what people thought of using their bearings and how did the oil clearances check out?

 

The clearances are going to vary from motor to motor. You are going to have to measure your own to make sure you have the correct size. As far as "new opinion on acl bearings"? There are none. Thousands of people use them every year on these motors and never have a problem. Many people also claim that they are no where near as good as oem. ( prolly cuz they didnt measure and check clearances to make sure it was good).

I personally used oem bearings. I micro polished my crank and alignhoned my block. Acl bearings could not give me the clearances i was looking for.