EGT Bung- Threaded or Welded?

[Karma]

I just bough new Defi gauges to replace my autometer ultralites. My autometer EGT bung was welded onto my old 1G manifold and worked great. However I no longer have acess to a welder to weld on my new Defi bung. Defi says you can drill a hole and tap a 1/8NPT hole in it. Then simply screw in the 1/8 male fitting supplied and call it a day. Im wondering if anyone has just threaded the EGT bung in and had sucess. Im not sure how well it will seal.

 

[oldman]

Mine is threaded and it seals just fine because it's NPT.

 

[1stGenRocks]

just remember that when you tap NPT threads you dont run the tap in the whole way. Since NPT is tapered you only want to run a few threads otherwise the hole will be too large and it wont seal and will back out

 

[Karma]

Thanks for the info