Quote:
Originally Posted by Lawrie
I use an assortment of ARP nuts to also help adjust the big end weight.
Lawrie
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Be a bit careful about aftermarket nuts on the early 91A/21A/29A rods - in some cases the base dimensions don't actually fit the machined areas of the caps (they ride on the perimeter).
So put some die-chem on the rod caps and tighten down the cap (in a rod vise) with the new nuts. See where the contact pattern is. You may find that it is NOT in the machined area/base, but out on the machined radius toward the inside. If so, this is a problem.