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Helicoil cast steel turbo housing


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I've a turbo from a defender TDI 200. One of the threaded holes in the cast part of the turbo, has had the threads striped. It's the bit the exhaust impeller sits in.

Why can't I repair this with a v-coil insert?

Plan B is to drill out the remaining threads, mig in a chunk of steel, drill and retap. But I worry that will be less effective.

Which is best?


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  • 2 weeks later...

Got in from the annual holidays this evening, and managed to get this done (had to have something to show for the week). It was a real doddle,whether it was a very soft casing, or I've never used quality taps before, or I've just magically got good all of a sudden, but it was a delight to do.

Drill out, tap, screw in the coil and tap off the tang, all done in a few minutes. Thanks for the advice.




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