Balancing Connecting Rods

[Colin Reed]

HI STEVE,
If these are for a standard or mild performance upgrade, I would just check for cracks also the condition of thread for clamp bolt,
lightly grind out any forging marks ie a long length of rod and on the cap.
Replace the cap bolts and use (HT) Nylocs. Reason they will have stretched and the Nylocs because they can be TORQUED to the set ftlbs 
and left were as castellated nuts might have to be over tightend to line up with hole in bolt.
Lastly if the rods are Relatively close in weight I would not bother to get them spot on

Hope that Helps
Colin
NZ