Quote: The main bores were line honed for the aluminum caps/studs. and the engine was run with a factory .020 under steel crank, that crank had no main bearing issues....all though I dont know what the main clearances were in that setup. thats why I believe the issue is with the shells , I pretty sure the clevite 77 series I am using can be ordered + or - .001" and that would set it up with .0035 all around. that seems like the easiest solution. but I'm still looking for ideas.
Not asking about the main bore sizes but the holes that the studs go thru , if they are too tight on the studs you can't set the thrust properly.
