Milenko2121 Posted June 2, 2012 Share Posted June 2, 2012 I have an '87 Turbo ECU and I'm wondering how anyone could adapt the o2 sensor to fit into the old 280zx o2 sensor. has anyone made any custom threads that would convert the size to fit the '87 o2 sensor? Quote Link to comment Share on other sites More sharing options...
450HPZ Posted June 2, 2012 Share Posted June 2, 2012 I have an '87 Turbo ECU and I'm wondering how anyone could adapt the o2 sensor to fit into the old 280zx o2 sensor. has anyone made any custom threads that would convert the size to fit the '87 o2 sensor? Should just screw right in. Quote Link to comment Share on other sites More sharing options...
BluDestiny Posted June 2, 2012 Share Posted June 2, 2012 Yeah I remeber them being the same thick kind. If not just bring the exhaust piece to a muffler shop and have them drill out your old one and weld in the proper bung. Quote Link to comment Share on other sites More sharing options...
Milenko2121 Posted June 2, 2012 Author Share Posted June 2, 2012 Should just screw right in. it has a smaller thread diameter. according to this http://forums.hybridz.org/index.php/topic/26230-z31300zx-ecumaf-to-280zxt-swap-guide/page__p__203511#entry203511 84-85 all models use Zirconia type which is the same as the 280ZXT 86-89 non turbo also use the older zirconia type (same thread as well). 86-89 TURBO models use Titania type which is non-compatible and has a smaller diameter thread Quote Link to comment Share on other sites More sharing options...
phil280zxt Posted June 4, 2012 Share Posted June 4, 2012 Milen, someone posted this as a possible solution to the change in O2 sensor http://sales.nightrider.com/12mm-18mm-Stainless-Steel-O2-Bung-Adapter_p_48.html Are you have to do any wiring changes to swap over to the 87-89 ear O2 sensor? Quote Link to comment Share on other sites More sharing options...
michaelp Posted June 4, 2012 Share Posted June 4, 2012 FWIW, I don't run the factory O2 sensor on any of my Z31s...I still get excellent fuel economy and make power. Quote Link to comment Share on other sites More sharing options...
HowlerMonkey Posted June 4, 2012 Share Posted June 4, 2012 (edited) There are many people who have the insert but most have them bundled with other stuff to bring profit. http://www.frsport.com/DIF-10082-O2-Oxygen-Sensor-Adapter-M18-x-1.5mm-to-M12-x-1.25mm_p_15988.html That insert seems way too long. You are also relying on whether the threads are ok in your housing as well. I had missing threads so I couldn't use an insert so I soaked the tiny bolts that hold that small heat shield on with a penetrating oil for many days and was able to get them off.........which is highly difficult and possibly impossible. I just drilled a small piece of metal for the two bolt holes and threaded it for the smaller sensor. Then I found an EGR tube gasket from some toyota at the junkyard bolted it on. Edited June 4, 2012 by HowlerMonkey Quote Link to comment Share on other sites More sharing options...
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