[6pack] Making a repair on pipe threads

[John Johnson]

Hi All,
         The cylinder head on a motor I got has bad threads on one of the pipe
fittings (3/8-18npt). Short of buying a very expensive Heli-Coil kit to make
the repair I wanted to see if anyone else has had to repair an npt hole in
cast iron? I will not need to use the hole for anything so it could
conceivable be sealed.

                                      Thanks,
                                 John Johnson
                               Columbus, Ohio