Stud correction or Exhaust pipe with oxygen sensor

Seems like the only way to take off the O2 Sensor is to have the threads crossed up and now the bad news that exhaust pipe is $1000.00+

Has anyone any info about using a die to clean up the threads - the shops I have been to all tell me the pipe has to be replaced are they taking the easy way out or is this really the only solution

 

Look around and find an old man operating his own one man shop , he will fix it most likely for less than $100.

 

I drilled and tapped bigger stainless steel studs on my pipe. It was easy but I already had the whole pipe off so I didn't have to drill under my truck. If you can get a die in there, it would be cake to rethread those studs.

 

Find out the thread pitch (home depot thread/pitch display thing in the hardware isle helps immensely)

then buy a die for that thread, and chase them.

Simple fix

 

Off the top of my head I think those are 1.25 x 8mm nuts . I purchased 6 stainless ones from Fastenal . Used two on the upstream side and two on the downstream side with two more to remount the shield on the downstream side . Shield was remounted between the 4 nuts. If you supply the O2 sensors and the nuts any old country shop will be able to chase the threads and get you out the door in less than 1.5 hrs. and less than a $100 . I take it you are not handy with a wrench or you wouldn't have been to "shops" . If you are handy with a wrench you can buy a fair metric die set and do it yourself for the same money , and then have a fair die set of your own.

 

That's your only option..... a 'die' to clean up the threads.

Depending on how 'bad' the threads were messed up, a die might not always be the answer. You'll know how bad it is if you install the 02 sensor and it doesn't fit correctly, won't tighten, or wobbles.

You're next option is a threaded insert. Here's a wiki page that explains it.
http://en.wikipedia.org/wiki/Threaded_insert