Quote:
Originally Posted by gregaust
Your best option now that a helicoil has failed would be
See what size the hole is now .
Then look at a thread chart , see what thread suits that size hole .
Cut a new oversize thread .
have an insert made up to screw in that hole as a plug
or use it as an insert with a smaller thread for a plug machined in the centre
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Not enough steel on the oil pan for that really. Its only 3mm. The insert would end up stripping that too or just spin around unless it was welded in. Or maybe with JB Weld. But thats similar to what I have already done With the added advantage that the insert is crimped in.