29-09-2018, 02:10 PM
Jon,
My take is...
I would not drill out the manifold hole. Bad practice. I'd remove the stud. You've not said what the diameter is - 5/16"? If so use a stepped stud.
Regards the loose one, again I'd use a stepped stud. Better than a Helicoil.
Sounds as though all the studs need replacing. Manifold studs need to be sound, they are subject to extreme heat and the reliability to be done up tight to prevent leaks.
Chris
My take is...
I would not drill out the manifold hole. Bad practice. I'd remove the stud. You've not said what the diameter is - 5/16"? If so use a stepped stud.
Regards the loose one, again I'd use a stepped stud. Better than a Helicoil.
Sounds as though all the studs need replacing. Manifold studs need to be sound, they are subject to extreme heat and the reliability to be done up tight to prevent leaks.
Chris