cumminsram06

I know, I know, I've asked repeat questions on headers twice now, but this time I searched and didin't find a definitive answer.
My 1993 Z28 has single wire, non-heated oxygen sensors. I am going to be putting on a set of Pacesetter Long Tubes next week, the o2 sensors are in the collector on each side. How long extensions do I need, is it just like all the other LT1 F-bodies, a 12" on one side and a 24" on the other? Also where do I get extensions for these single wire units? All I can find are flat four pin connections or square four pin connections.
Thanks again everyone.

31camaro

iTrader: (2)

well since it is a 93 it has 1 wire unheated sensors, which you can easily extend using similar gauge wire, and just cutting and splicing, but it is prefered that you do the 4 wire heated o2 conversion

jaysz2893

pm sent

cumminsram06

I already bought a set of new single wire o2 extensions, maybe I'll do the conversion next year.
Anyone know what gauge wire it is and is it ok to just use a butt connector or do I need to go to some exotic connection method?

31camaro

iTrader: (2)

i just used butt connectors and they worked fine

conor.davis

iTrader: (20)

I soldered mine, I have heard of some people crimping them. IMO not the best thing to do on an O2 sensor.

93TAJ.C.

iTrader: (1)

Hold up! lol You have to actually buy the 4 wire o2's and send power to them from the fuse box under the hood. If you dont the car will constantly go in and out of closed loop because the exhaust is so much cooler that far down in the exhaust, and because longtubes dont retain heat like a stock manifold. Also, you need to extend the car's side of the wire harness. If you extend the wires on the o2's it will be a greater resistance, thus giving a slightly wrong reading. It's actually very easy, i had to do it on my 1993. shbox has the wright up of course. Basically you still use the single wire extensions and hook the senser up normally, but the other two are just power and ground that go to a power source that is hot with the ignition on. The fuse box comes out and you can acess it from the bottom. I did this and you cant see any of the wiring at all, just run them up the back of the engine, and over the booster.


http://shbox.com/1/heatedsensor2.jpg

This is an actual write up
http://www.fastbird93.com/Installati...Conversion.htm

litch2004

iTrader: (1)

^^ this is the route that i went as well

duh

iTrader: (16)

I said screw it and bought the fastbird harness, and they'll go in once I actually get off my a$$ and put my LT's in.

cumminsram06

Thanks for all the help everyone, I ended up sending back the 1 wire oxygen sensors and exchanging them for the 4 wire units. Didn't realize they are almost three times the price! I am also going to be ordering the conversion harness from Fastbird so everything plays nice. Thanks again, where would the world be without the Internet? Thank you al gore! Ha ha!