My crank snout (for damper) was slightly tapered. At the end it was 1.5315" dia and farther toward the #1 main it was 1.5320". This was measuring at 53F as my garage/workshop is that temp today. So a few .0001" larger at higher temp would be expected.

I got their 6.535" I-beam rods (several years ago), and they look like RPM Int. rods (bolt heads). http://www.rpmmaxx.com/images/Pro%20I-Beam.jpg

Quote:

Unfinished rod journal.-1


The 5-6 rod journal lightening hole. All the others were drilled completely through.