Im going to put my o2 back in my lt's but being i dont have extenders and all that im wondering if it will work if i drill a hole into the headers and screw it in and all that good stuff but it wouldnt be at the collector it would just be in a single exhaust preliminary pipe. would this work ok i mean it should be better then having nothing as you all say!

 

You could just cut the wires on the O2 and extend them. In my opinion it's less a pain then drilling a hole and welding in a bung

 

You can't just "drill a hole... and screw it in"..... you need an O2 bung welded in. Why not get the extensions and do it right? Reading O2 from a single cylinder will mean that one cylinder is totally dictating what happens to the other 3 in that bank. If the one you are measuring is "off", they will all get the wrong fuel. IF one of the others is "off", it won't be picked up by the sensor. At least putting them in the collector, you get an "average" O2 analysis, and you control all 4 cylinders based on that.

 

Slot1Z what do you mean by just exstending them, exstend the where to the end of the header muffler or what? the reason im doing it this way is because i dont have but a few dollars left over each week from the paycheck!

 

Don't cut your O2s. If you really must, then RESOLDER them and use heat shrink wrap. There are some issues with the insulation melting if you aren't familiar with soldering. If you don't do that you'll have tuning issues... don't crimp. Sorry if it sounds demanding but I just don't want to see you get stranded.

 

I crimped mine and there are some people on here that have and they work fine.
I agree do it right the first time but my Z is not my daily driver so I decided to cut splice and crimp. I don,t have the tranny in yet so I don,t know how they are gonna work but what I am trying to say is if you are on a budget cuttin and crimpin is an option. I also had a muffler shop weld in O2 bungs into the side of my header muffler. O2 extensions will run ya 15 to 18 dollars each and I spent less than 5 bucks to extend my own.

 

so extend them and then drill a 17mm hole that way it will fit tightly and seal it with ceramic 2000 degree expoxy and that should work if i do it in the collector

 

Personally, I would take it to a muffler shop and have them weld some O2 bungs in your headers. Should be cheap. I had O2 bungs welded in and had the pipes shortened and turndowns added for 30 bucks, and he said he felt bad about charging me that. He did good work(really pretty welds) so I said consider it a tip.

 

So we're goint to thread one of the most critical sensors in the engine into a 16-gage steel tube???? Any air leaks, or exhaust leaks at the sensor are a protential disaster..... totally screw up the A/F management system.

Same with the "extensions"...... the O2 sensors produce signals that are measured in millivolts...... 1/1000th of a volt. Any unneccesary resistance in the splice and you screw up the A/F management system....

Are we beginning to see a pattern here? THis is not the place to "poor boy" it..... do it the right way, or you'll be back with posts about running rich, stumbles, no power, etc.

 

Thanks Injuneer, that's my point. It could be a serious issue if the wires are tampered with. I don't believe our O2s are the oxygen through the insulation type. Any cutting will cause a disruption with increased resistance. Even soldering and heat shrink is questionable but taught at most manufacturer training centers as a course of last resort. Crimping will eventually deteriorate, loosen, and get dirty... not a good idea at all.

 

Well, I am not starting an arguement and I have the utmost respect for Injuneer, you know your stuff.
But I had a couple of Bosch O2 sensors laying around (New, from a different project) so I decided to experiment. I have a scanner so I can see what the O2 sesor is doing and if it gets flaky or goes shizoid on me I have money set aside in my budget for AC delco O2s and true extensions. I know crimpin is risky but I did these right and everything deteriorates eventually but if my crimps loosen or get dirty I will kiss your a**. I sealed em up good and ran convoluted tubing over em. May be alot of work for nothing but I have done other "poor boy" fixes on things that worked out fine and saved me some cash.