duragg Posted July 21, 2011 Share Posted July 21, 2011 Anybody with 6-1 headers and a wideband O2 installed able to take a picture of the sensor installed in the car? If I could see the location and orientation of the sensor I could weld the bung as My engine is on a stand getting built today. Saves me a dry-install-remove-weld-install cycle. Thank you. I figure it goes somewhere in the collection area at the bottom of the header but the orientation for frame clearance is a question. Quote Link to comment Share on other sites More sharing options...
fhptom Posted July 21, 2011 Share Posted July 21, 2011 I have the same header and just did that. I put it on the top half thinking it would make it easier to run wires into cockpit. Made it hard to reach. I would say either on the side or bottom. Quote Link to comment Share on other sites More sharing options...
Leon Posted July 21, 2011 Share Posted July 21, 2011 I have the same header and just did that. I put it on the top half thinking it would make it easier to run wires into cockpit. Made it hard to reach. I would say either on the side or bottom. Do NOT mount O2 sensors in an orientation that doesn't point the sensor up! With the sensor on the bottom, or even exactly on the side of the pipe, condensed water will thermally shock the sensor leading to premature failure. Quote Link to comment Share on other sites More sharing options...
duragg Posted July 21, 2011 Author Share Posted July 21, 2011 Thinking it needs to be on the side, and the tip should be ...? When you say "sensor Up" referencing the tip. I can't remember if there is clearance from stuff on the Transmission side. So the tip of the sensor pointing outboard and the sensor bung just below the "waterline" so the tip is a bit above the wire side. Look forward at the rear header flange, that puts the sensor about the 3:30 position? I just wish I could see a picture of that area so I can be sure there is nothing else mounted in thre. My engine and tranny are on a rope in the garage so can't tell. Quote Link to comment Share on other sites More sharing options...
duragg Posted July 21, 2011 Author Share Posted July 21, 2011 I stand Corrected. Excuse me. My linkhttp://www.wmswideband.com/install.htm The O2 sensor must be installed in the side or top of the exhaust pipe. The installation angle of the Bosch wideband O2 sensor should be inclined at least 10? towards horizontal (electrical connection upwards). Thus preventing the collection of liquids between sensor housing and sensor element during the cold start phase. Quote Link to comment Share on other sites More sharing options...
Leon Posted July 21, 2011 Share Posted July 21, 2011 I meant the visible "wire end" of the sensor pointing up. The ceramic part that actually touches the exhaust gasses shoud be pointing down, sorry for the confusion. I would mount it at a greater angle than the picture shows just for peace of mind. Quote Link to comment Share on other sites More sharing options...
duragg Posted July 21, 2011 Author Share Posted July 21, 2011 I found a picture in my files that shows some of the location. See attached. I think I will put the bung here and there should be clearance all around. Quote Link to comment Share on other sites More sharing options...
fhptom Posted July 22, 2011 Share Posted July 22, 2011 I only use the sensor when I do dyno tuning so there was little chance of any thing affecting it. But ultimately that is why I put it on the top, just should have put it a little closer to the front of the header to make it easier to get to. Quote Link to comment Share on other sites More sharing options...
RB26powered74zcar Posted July 22, 2011 Share Posted July 22, 2011 Attaching the bung @ 10 - 2 o'clock position will be safe Quote Link to comment Share on other sites More sharing options...
rayaapp2 Posted July 24, 2011 Share Posted July 24, 2011 The cool thing about modern AFR Sensors and O2 sensors are they have really good heaters built into them. PROVIDED you do not have exhaust leaks between the cylinder head ports and the sensor location you can almost install it at the muffler tip. You will need some amount of piping between the end of the exhaust tip and the sensor to prevent dilution. Say 14" or so. Other than that point the sensor end straight down for the BEST results and not in a long radius of a turn. It may be mounted in the side of the exhaust pipe with good results as well just as mentioned above. You do not have to worry about placing the sensor as close to the heat source as possible like the older non-heated O2 sensors from the 70s- early heated sensors on the newer widebands and O2 sensors. Some of the newer 02 sensors(NOT AFR Lambda widebands) still do not do well farther away from the heat even with a built in heater. Most new stuff though is held to a mandate that it must reach operating temp within 30seconds or less so the heater is critical for keeping the sensor above 500 degrees(I believe if memory serves me). Anyone that has taken exhaust gas temp readings can tell you at idle in the mornings you will not see 500* unless you are on top of the exhaust port itself. The heat is gone long before any sensor. The readings I got from my personal vehicle were in the range of 250* F and 425* F moments after cold start and a heat soak run on the freeway taken at idle down respectively and from inside the exhaust stream 4" off the port. Quote Link to comment Share on other sites More sharing options...
akeboshi Posted August 10, 2011 Share Posted August 10, 2011 (edited) here go! p.s. just ignore the reducer after the o2, its not required! lol Edited August 10, 2011 by akeboshi Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.