HELP!! what did I do wrong??

[Snowman7877]

I am trying to tap a hole for my EGT guage. But I just stripped all the threads off the thread tapper. The hole is the right size. Did I get the wrong type of bit or did I do something else wrong? I now have a big hole in my exhaust manny and have to wait for the wife to get home so I can get anothe thread tap

 

[nine5raptor]

did you thread it SLOWLY with a crescent wrench or something like it, or did you use power tools?

 

[Snowman7877]

I used a drill. I'm guessing that was the wrong thing to use????

 

[GSX4LIFE]

You use the drill to run the correct size hole. But the trhead tap must be used by hand. make sure to use oil on it, and only cut a couple threads at a time, removing it frequently to clean the shavings.

 

[P8ntBalla]

you also should be using something where you can get a grip on both sides of the tap, not a crescent wrench. that can cause you to tap the threads out unevenly. what im trying to describe is something that looks like this:

______<handle
...||....
...||....
...||....
...^....
..tap

 

[nine5raptor]

I've used a crescent wrench or box end many times for tapping threads. Just use your other hand to steady it and keep it straight.

 

[Snowman7877]

I appreciate all of your help. I'll get another tap and try again tomorrow. Thank you all again...