I have not tried this myself, but others on the list have used a 1/2"
pipe tap and plug.

Larry A.

Arthur Anderson wrote:
>
> good evening folks,
>        The threads of the oil drain plug of the 83 1.9L engine I'm
> installing
> in my 85 westy weekender are quite stripped, I'm afraid. The PO had a
> rubber stopper sort of deal in there, but I'm not sure I trust
> that...while it's out and empty I'd like to try to trace the threads so
> I can stick a bolt back in there. Anyone know what size tap to use?
> Also, is it okay to just toss in a bolt or should I order one of the
> fancy-pants drain plug bolts I was just looking at on volkscafe.com?
>
> Thanks,
>        Arthur
>
> portland, maine
>
>