so back to the Orange, we poked around and looked over the various oil gally plugs they have run and failed in the past and I was able to determine it was an AN o-ring fiting and not a thought to be NPT.
I happen to have a -4 union but no plug, so I chopped one side off and welded the hole shut. rolled on an o-ring and installed it. Good fit. Tried it and it held up. So its off to Thunderhill.
Last edited by Vince@Meanstreets; 05-04-2014 at 10:06 PM.
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