Wow Tom!--$13 plus shipping for a 39 cent bung?? I don't think so! Those guys don't even use a gun!
The reason I wanted to tap it is that welding old cast iron (ramshorn) can be a disaster--even using TIG.. The bung don't expand/shrink at the same rate as the cast. It can last a year or so before cracking, but you've still lost a manifold. Thought I'd try tapping with welding as a last resort.
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Stepsides look like real trucks!
Smitty
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