I am planning to babit the rods in my 235 but right now its a very back burner project.
Spin casting is still done:
Fusion Babbitting Co Milwaukee, Wisconsin 800-613-5118
The hard part (kinda) would be to calculate the exact amount of babit to add to get the desired thickness. For most con-rod sized objects spinning at about 400RPM generates about the proper force to coat the surface.
I have some sketches of how you could make a jig for 2 rods. Bolt them down, heat, spin, add babit, cool, scrape, done.
