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Originally Posted by 100_Percent_Juice
Is "the crack" something that I can just weld or is it then junk?
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The crack is in the cast wastegate housing and is basically unweldable, though there are some that claim it can be if caught early. Even MikeK's < 10K turbo had it starting. It is not a big deal until it grows and can start leaking boost and cause some flutter.
Just be aware that basically every VF39 has it and it may or may never cause an issue.