Nakoz

iTrader: (2)

Ok, I just had a bung plug put in my Y-pipe a week ago for my WB. I went to pull out the plug in the bung to install the 02 WB sensor and the G&D D@MN PLUG WONT COME OUT! I broke an allen, a pipe wrench, and a pair of vicegrips! I figure that after the bung was welded in and the plug installed, the heat from the welding sealed the plug in.

I have tried a propane torch and heated it for 20 min hit it with another pipe wrench and still nothing. Any ideas on how to get this out?

Viper

iTrader: (6)

Last last resort is take it to a muffler shop. Shoot it with PBBlaster first and let it soak.

foff667

iTrader: (2)

I've seen this happen SEVERAL times while working on customer cars...I just take it to the exhaust shop that did it & have them take care of it. They've tried several ways to weld in the bung & it seems hit or miss. I usually have them at least coat the plug with anti seize and run it through 3 or 4 times before I leave the shop though, even then I've run into an issue here & there, but not nearly as bad as them just throwing in the bung after they've done welding/cooling the bung.

Doc

iTrader: (9)

Those allen type bolts suck *****. Never had a problem with the Hex cap screw type.

eagleuh1

Same on the hex head. I welded my bung on with the plug installed with anti-sieze while I welded. No problems backing out after letting it cool. No problems getting O2 sensors in. I also tacked it on 4 sides first before finish welding all the way around.Good luck with it.