Adding an O2 bung to the exhaust.., a couple of pictures... Options

[Mueller]

Adding a WBO2 bung in the exhaust......European Racing Header for my /4 motor.

My fuel injection (Link) has the ability to gather and use the data from a wideband oxygen sensor, I can also use the LC-1 and laptop or LM-1 with the sensor (both from Innovate Motorsports)

Getting it ready:
(IMG:http://www.914world.com/bbs2/uploads/blog-1124418953.jpg)
I used a Uni-bit....expensive little suckers, but worth it...now I just need to figure out how to re-sharpen them (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)
(IMG:http://www.914world.com/bbs2/uploads/blog-1124418961.jpg)
Used sparkplug to protect the threads as well as offering a "handle" to hold it while tack welding:
(IMG:http://www.914world.com/bbs2/uploads/blog-1124418986.jpg)
Ugly weld, looks better now that I've painted it black:(IMG:http://www.914world.com/bbs2/uploads/blog-1124419002.jpg)

[ChrisFoley]

I was recently doing some work on a used Upright Conversion Tangerine Header. The customer had added an O2 bung himself that he bought from Jeggs. When it went through the alkaline bath to remove the old H/T coating before being recoated the bung came out full of pinholes, and the threads were also eroded away. On closer inspection I noticed the mig weld had eaten away at the bung material too. Not all O2 bungs are created equal I guess. (IMG:http://www.914world.com/bbs2/html/emoticons/unsure.gif)

I had bought some bungs wholesale from Hooker but they wanted way too much $$. More recently I picked up some stainless ones from Vibrant which were much more reasonably priced.

I like to TIG bronze weld O2 bungs. Less distortion and oxidation that way. (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)