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      03-03-2021, 07:54 PM   #1
GearKid
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Drives: S2000, Subaru STI, Tacoma or
Join Date: Feb 2019
Location: San Francisco Bay Area

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Rod bolt won't torque to spec

Has anyone experienced an ARP bolt not able to torque down to specification? The shop was trying to explain this issue during a rod bearing job. Max torque achieved was 20 N-m. I asked if the threads were stripped and they are not. Not sure what the deal is. I'm heading to the shop tomorrow to get some eyes on this. Any recommendations as for how to handle this?
As if this weren't enough, the adjacent rod journal is out of round (min: 50.6mm max:52.0mm).
Motor did not spin any bearings but the two in question were well worn into the copper (2008 model year). What's the max tolerance for out of round journals and how does this happen? I guess there's no visual scratches. Shop thinks I need to pull the motor and find a new one.
Appreciate 0