WBO2 sensor Location

B

Bad Ass Black Trucks

New member
My Wideband sensor recommends placing the sensor between 12" and 30" from the exhaust turbine. Problem is, my RPM downpipe is a 2 piece and the joint is right at 12". I would prefer to place before the joint so that a potential exhaust leak is downstream of the sensor but I am worried that it will shorten the life of the sensor being too close. Most guys seem to have their WBO2 only a little downstream of the stock sensor, less than 12".
 
JSM

JSM

Active member
Re: WBO2 sensor Location

For testing people put them at the end of the exhaust at the tip and guess what they work just fine.

Your making this more difficult than it really is.
 
B

Bad Ass Black Trucks

New member
Re: WBO2 sensor Location

:bs:
TwinTurboV8Ty said:
For testing people put them at the end of the exhaust at the tip and guess what they work just fine.

Your making this more difficult than it really is.
Click to expand...

:bs:

I know that you have a lot of experience but I cannot buy that. If you put your sensor at the tailpipe or even inside the tailpipe you have to compensate by at least 1 point for the atmosphere that gets inside. I bought a wideband for accuracy, not for guessing.

I fought an exhaust leak upstream of a NB O2 on another vehicle and it made things extremely rich at low RPM. These sensors are extemely sensitive.

I just want to know if other WBO2 sensors recommend placing the sensor any closer and if anyone has experienced short lifetime from the heat if they did put it < 10" from the exhaust turbine.
 
WyoSyclone

WyoSyclone

Active member
Re: WBO2 sensor Location

My PLX is in the stock O2 location and it's just fine with the RPM Stage1 turbo, and running Torco. Has been there for 4 years now.
 
Flyin Ryan

Flyin Ryan

hated cuz he drives fords
Re: WBO2 sensor Location

My innovative lc1,lm1 and aem wb's all say a minimum of 12" from the turbine or i'll over heat/shorten the life of the sensor. Innovative makes a heat shield that you put on the sensor that's suppose to help if needed but I've never used it and don't know anybody that has. They all also say to mount before any cat converters. Also they all also mention to mount it on an angle so the sensor's less likely to catch condensation
 
B

Bad Ass Black Trucks

New member
Re: WBO2 sensor Location

Flyin Ryan said:
My innovative lc1,lm1 and aem wb's all say a minimum of 12" from the turbine or i'll over heat/shorten the life of the sensor. Innovative makes a heat shield that you put on the sensor that's suppose to help if needed but I've never used it and don't know anybody that has. They all also say to mount before any cat converters. Also they all also mention to mount it on an angle so the sensor's less likely to catch condensation
Click to expand...

Talking about this guy from innovative: http://www.amazon.com/Innovate-Exhaust-Clamp-Wideband-Sensor/dp/B000ECR8DQ

Not sure I like how the venturi setup works, but a heat shield might not be a bad idea if it worked.
 
Flyin Ryan

Flyin Ryan

hated cuz he drives fords
Re: WBO2 sensor Location

Yeah your link is not what I was referring to. That's a clamp setup for use with a lm1 so you don't have to install a bung to get the afr's.

What I was referring to is this from innovatives forums

Q: When do I need to make or install a heat sink?

A: The Bosch LSU4.2 wide-band O2 sensor (shipped as part of the LM-1 kit) is rated to operate at an exhaust gas temperature of < 1300 degrees (F), and a sensor housing temperature of < 900 degrees (measured at the bung) for maximum accuracy and control. When either of these operating temperature ranges is exceeded, the sensor can no longer be accurately controlled. Further, operating at or over these temperatures for any length of time can significantly reduce the lifetime of the sensor. The LM-1 is designed to display an error message under these conditions (currently 08- Sensor Timing Error) rather than provide inaccurate readings. For some turbo vehicles, rotary engines, and other setups, this error message can be encountered with annoying frequency.

Q: How do I make a heat sink?

A: Take a 4-5” square piece of copper (optimal) or aluminum, and punch/drill a hole just big enough to fit over the threads of the O2 sensor. Bend it so that there are two “wings on either side of the sensor. Mount the heat fin between the sensor and the sensor washer. We recommend 0.0647" thickness 4" x 4". (Or you can buy the Innovate HBX-1).
Click to expand...

Here's one made from the instructions above up on ebay
http://www.ebay.com/itm/Wideband-O2...pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr

And there's even something like this. Have no idea how well this setup would work

http://tunertools.com/proddetail.asp?prod=IN-3729
 
B

Bad Ass Black Trucks

New member
Re: WBO2 sensor Location

Flyin Ryan said:
Yeah your link is not what I was referring to. That's a clamp setup for use with a lm1 so you don't have to install a bung to get the afr's.

What I was referring to is this from innovatives forums



Here's one made from the instructions above up on ebay
http://www.ebay.com/itm/Wideband-O2...pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr

And there's even something like this. Have no idea how well this setup would work

http://tunertools.com/proddetail.asp?prod=IN-3729
Click to expand...

The heat sink would be easy enough to make and I as I was looking at it this evening I was wondering if there was some way to get the sensor out of the direct exhaust stream. Looks like they make it and you found it. Thanks.

I may do the HBX-1 and a heat sink as well. I don't want to have to replace a $150 sensor sooner than necessary.
 
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