Warning: Unless you like mechanical stuff, this will be the most boring post ever.

The exhaust on my “new” XJ6 leaked pretty badly where the manifolds joined the downpipes, and for good reason: The studs that were installed (in one of the few bodges on the car) were
at least an inch too long. There was no way for the “donut” gaskets to be clamped tightly, and (surprise!) they leaked. In the process of removing the too-long studs, I discovered three of the tapped holes were stripped, one on the front manifold and two on the back. Shown above are the repaired manifolds with new studs (temporary, see end note). Below we’ll take a peek how I repaired the threads.
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