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Yes, the ractory rod bolts are a problem.
Factory rod bolts are a "torque to yield" type-- the fastener is actually tightened BEYOND the yield point when installed. Once that's done, if it's removed, the fastener is junk. Factory rod bolts cannot be re-used for this reason-- if you were to torque it again, you would elongate it even further past the yield point and into the territory where it can snap under load.
This isn't the case with good aftermarket rod bolts like ARP-- these can be used in a rod vise for measurement of the big end. Resizing should take place with the new bolts installed and preloaded (I used a stretch gage) to the manufacturer's spec. Then the bolts are removed, the rod installed and the preload set to spec again.
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'66 911 #304065 Irischgruen
‘96 993 Carrera 2 Polarsilber
'81 R65
Ex-'71 911 PCA C-Stock Club Racer #806 (Sold 5/15/13)
Ex-'88 Carrera (Sold 3/29/02)
Ex-'91 Carrera 2 Cabriolet (Sold 8/20/04)
Ex-'89 944 Turbo S (Sold 8/21/20)
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