Hi all I just recently bought my rx7. I can to this forum actually seeking advice. But first off let me introduce myself, I am a college student at UVA I love to have fun and race. Their isn't much to what makes me happy in life, just a fine running vehicle and some good friends...



Now here is my question two discuss (and I am terribly sorry if this is being posted in the wrong section) I bought a Monza Pacesetter header for my mazda and I got it installed and everything but I went to put the O2 sensor on it and it did not fit...that seems to be a big problem to me. So if their is anyone that can please give me a suggestion on how to fix this it would be greatly appreciated. Thanks!

any exhaust shop should have a bong (not the funny smelling kind) that will fit your o2 sensor. they will plug the old bong and weld the new one on the headers in the collector area. shouldn't cost much at all either lol. welcome to nopistons!!

Bongs are what you smoke out of, bungs are weld-on fittings for threaded parts, like the O2 sensor.



The most likely thing I can think of would be damaged threads on the headers(or the o2 sensor). Something like this will fix it.



Welcome!

lol my bad

Aww thanks you guys! I'm gonna get it over to the exhaust shop tomorrow and get that sensor fixed, I also have to bolt the header on the cat still and put the apexi mufflers on it, but hopefully it should be all good and done tomorrow. Thanks for all the help!

What kind of racing you into drag drift or grip? And its cool to see a girl that likes to drive and handle a wrench. But to replace a bung I think a shop is the way to go cause its not that expensive and they suck to cut out and replace.

I mainly do grip, and straight drag for speed (not that often though) I have always loved working on cars...putting this header on has been a real head scratcher though...seems one of my aux. valves are bad, but at least I know were they are now so I can replace it!

Welcome to nopistons!

Greetings fellow Virginian! Charlottesville is a beautiful little town. One of my favorite places.



I'm surprised to hear about the O2 sensor not fitting. Those threads are pretty standard, AFAIK. So there's a threaded hole in the header but the sensor doesn't fit? Is it close to fitting?



Maybe it can be cleaned up with a tap. If it's the wrong size a shop can replace it with the right one.



Good luck!

It is very, very close to fitting, the sensor will thread onto the bung (i'm guessing thats what it is called) at the very top and go no farther after the first rotation. But no worries, I just dropped it off at the exhaust shop and their hopefully getting it done for me while I'm in class!