Im currently undergoing a bottom end rebuild with jdm itr o/s pistons and been debating whether or not it is necessary to upgrade my b18c1 rods to ITR rods...from wot i been reading about the difference between the two i found this:

"The connecting rods were made lighter and more rigid. There is a 33% improvement in their surface machining allowing for almost no weight difference between them. All contact surfaces are also mirror finished in the same fashion as professional race cars. The rods assembled by hand onto the crankshaft using a custom micrometer to take into account stretching of the connecting rod bolt. This allows for a 38% reduction in bolt fastening variation. No machine can achieve this kind of precision and is required to ensure there are no dangerous vibrations during high engine speeds."

ok so they're lighter and more rigid but im sure that polished and shot-peened gsr rods should be able to handle the extra strees from compression 11+ and 180+ whp...any input is much appreciated

 

Not worth it. Your GSR rods will be fine. ARP rod bolts and you're set.

 

$35 for ARP rod bolts, done

 

yeah rod bolts tend to be the weak point in high rpm motors, not the rod it self

-sander