exhaust smog outlet plug size
I don't know if there is a "correct' size... but I can tell you what I used. I used 1/8" natural steel because that is all I could find locally at the time. Then I drilled it with the appropriate drill size for the 1/8" NPT tap to a depth that would put the plug just below the suface, and then tapped it.
Hope that helps somewhat??? Maybe some one else will chime in that has done more of them and knows more.
I don't know if there is a "correct' size... but I can tell you what I used. I used 1/8" natural steel because that is all I could find locally at the time. Then I drilled it with the appropriate drill size for the 1/8" NPT tap to a depth that would put the plug just below the suface, and then tapped it.
Hope that helps somewhat??? Maybe some one else will chime in that has done more of them and knows more.
