Home School Valedictorian
Join Date: Feb 2006
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To start with, are you sure the big end chamfer is oriented correctly. The large chamfer(the bearing and the rod) should be facing the crank, not the paired rod.
If all(rod & bearing chamfers) are OK the tight ones need to be machined to get the proper clearance. The loose ones, it has been a long time but IIRC typically .025-.028 is considered to loose by some people and need replaced. I have read about people running .030-.035 and claim to not have any problems. Some claim wider side clearance causes low oil pressure, others say it has no effect because oil pressure is determined by the rod bearing to rod journal clearance.
I will say I don't have a lot of experience here and am going by what I found years ago on the couple of builds I had done.
Keep us updated.
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