so yeah im picking up a set of replacement bolts+washers of the same size+threads+grade10.9. we're gonna:
- spot weld the washer to the bolt since they didnt have flange bolts
- drill out the remnants of the cooked stud, place our new bolt thru its hole, threads facing up like the stud
- spot weld the new bolt on where it passes through the drilled hole (below where the nut to secure the engine mount bottoms out against the frame)
- let cool, then throw an extra of the original nut (captive washer too) on with red loctite, torque the same as the other studs
this is one of like 4 bolts on this mount of 34nm+60deg so it would be fine even if we just made a makeshift stud with a fresh bolt and loctited the fucker
RE: the nice part about living near several industrial fastener suppliers, having a welder, and having a rivet gun is that you can do stupid shit to pretty much anything but the engine or transmission and just go "ROFL drill it out and weld a new stud on 4head, if youre really feeling weenie hut jr's today you can use the rivet gun"
(i'd never break a stud off an engine mount because a software localization issue borked a torque spec nope nuh uh)