Confusion about the o2 housing.

amballer82822 · 08-22-2012, 01:28 PM

My o2 housing is cracking and if I'm not mistaking it is the pipe bolted onto the hot side of the turbo then connected to the j pipe. I understand it's called the o2 housing pipe but mine has no o2 sensor on it? My o2 sensor bung is on the j pipe. Every o2 housing on eBay has a bung on it and I don't think I'd be able to use this correct?

Bud92gsx · 08-22-2012, 01:30 PM

Are you sure you don't have an o2 dump?

Most non o2 dump have the bung on the housing..But I think your talking about a dump.Why not take the housing off, get it rewelded and call it a day.

LiquidX · 08-22-2012, 01:32 PM

Please take a picture.

The j-pipe is on the intake side of turbos like a 14b and 16g. It looks like a J hence the name. It attaches to the compressor cover outlet and hooks up the the lower inter cooler piping.

The hot side (turbine side) is only exhaust. The o2 housing should be attached to the turbine housing and the down pipe for the exhaust will connect to it. Unless you are running narrowband simulation through a wideband, then you need to have a stock narrowband sensor in the o2 housing (hence the name).

amballer82822 · 08-22-2012, 01:43 PM

I'll post a picture in about an hour, sorry for the wait, doing this from phone.

Also my mistake, I meant the down pipe and not the j pipe .

I just posted the pictures, in the second picture you can see a bung and an o2 sensor in the down pipe and not the o2 housing?

LiquidX · 08-22-2012, 05:17 PM

Where the o2 sensor is, it won't be a problem. However, what is going to be a problem is an exhaust leak before and a little bit after the sensor. You will want to get the o2 housing fixed or buy a new one. It is going to cause poor fuel conditions as the sensor is reading a much leaner condition that what it actually is.

If you do replace it, put the stock sensor up front and either put a plug in on the down pipe or that would be an excellent place for a wideband sensor. You may need to get some new welding done to have a new o2 housing fit the down pipe, but you may not either.

Again, a "j pipe" is on the compressor housing, not the turbine housing.