Hi folks, while tightening exhaust manifold nuts, one stud 'pulled out'. Small steel crescents fell out and were wound tight around the stud, evidence that a repair had been made previously. I figure that I should drill and tap the hole for a step stud. The engine is in the car, the car on a Quick Jack.
Any tips on drilling out and tapping the hole while under the car. As I will need to buy a tap, exactly what type/size should I get? I read on another thread that someone made a drilling jig for this purpose. Would something like that be needed/advisable for this job? Does anyone have one to lend?
Also, what are the torque specs for the stud and nuts?
My personal opinion, they are a bit pricey but Time-sert has been what I have used for alloy thread repair. It holds up.
https://www.timesert.com/
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