This. The flat spot behind the AC bracket is perfect to drill/tap and either loctite/jbweld to secure it. If you could braze it or weld it, that would be the best option though.


I stuffed some rags up in the block behind to catch the swarf, and act as a drill stop, but on my last car I drilled the engine in situ with a greased bit and flushed the oil through a few times to get whatever I missed.
Edit: I'm pretty sure the location ak- used won't work on an iX because of the motor mount arms, but it definitely illustrates the idea.


I stuffed some rags up in the block behind to catch the swarf, and act as a drill stop, but on my last car I drilled the engine in situ with a greased bit and flushed the oil through a few times to get whatever I missed.
Edit: I'm pretty sure the location ak- used won't work on an iX because of the motor mount arms, but it definitely illustrates the idea.
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