Removing the parting lines will only take off around 5 grams
Just did a little work on the parting lines of the heaviest rod. You were spot on about those 5 grams!
My mics have revealed other variations. There are flats ground into the rod side and cap sides - the big end balance pads. There is a lot more meat left on the heavier rods. Also the pin bolt boss' are ground differently. I am going to even these up and see where I get.
I have also found quite a bit of variation in the dimensions of the caps. The shoulders that extend off the caps (that mate with the troughs in the oil pan) are all different. I am going to true those up.
You are right about sticking with Babbitt style rods - they are the only kind that will work with the jet oiling system . . .
