Rocker stud problems

[60sIron]

So I've had a thread insert for a rocker stud pull out of my aluminum head.  It presented itself as an increasingly loud rattling noise.  I'm in the process of figuring out what I'm going to do, but I wanted to ask the community what causes this.  I torqued the studs to 40-45 ft lbs.  I assume if there was a coil bind problem it would have destroyed all the inserts immediately, not slowly over the course of a few hundred miles.  Interested in hearing your thoughts on this.  Hopefully I can fix this and it will stay fixed.

[blykins]

Head soft, too much spring load, coil bind, could be a number of things.

I pulled a couple of studs out of some Pond heads once, with about 600 lbs of spring load. 

What kind of head is it?

[60sIron]

What kind of head is it?

It is a BBM head, probably 2016 or 2017 vintage.

[Rory428]

Did you torque the stud itself, into the head 40-45 ft/lbs, or did you torque the nuts to that amount?

[TJ]

Few month's ago another fellow had a similar problem.  Jay had a nice diy type fix if you have an old rocker assembly lying around.

https://fepower.net/simplemachinesforum/index.php?topic=12720.msg136806#msg136806

[60sIron]

Did you torque the stud itself, into the head 40-45 ft/lbs, or did you torque the nuts to that amount?

The studs were just screwed in finger tight.  The nuts were torqued with the ARP lube that came with the kit.