exhaust gas analyser- oh-oh!

[d&smach]

I just recieved two wideband exhaust gas meters for just under $200 ea. Upon reading the lenghy intructions, I see where you will damage the sensors if you use leaded gas or OIL! I am one that believes in using a richer oil ratio than a 'normal' person. Am I screwed or is there a solution?

[aj06bolt12r]

That is why almost all 2 stroke guys tune using EGT instead of wideband 02 sensors... However I am pretty sure Yamaha made an 02 sensor work on an oil burner with their legendary ox66 engines... So its possible.

[PanRonnie]

I have had no problems so far!
Ok they won,t last a 100.000 miles but probably longer than your engine

[pcrussell50]

Just use them for tuning, not for full time running. I do this with my track car. I have a special bung for it in the exhaust. When I’m done tuning, I remove the sensor and put back the threaded plug.

-Peter

[25two.stroke]

I just recieved two wideband exhaust gas meters for just under $200 ea. Upon reading the lenghy intructions, I see where you will damage the sensors if you use leaded gas or OIL! I am one that believes in using a richer oil ratio than a 'normal' person. Am I screwed or is there a solution?

I also use them for tuning. Mine from AEM say not to put them near potential flame travel, not with leaded gas, not with oil, 30" + away from the exhaust port, 15 deg. up at an angle, no water on and on and on....I dunk them in water, leave them in the rain, have them 16" from my closest exhaust port, dump leaded gas on them and light it on fire etc. AND THEY KEEP ON WORKING. Not sure how long they will last, but I've run 5 or 6 2.5s on top of them so far and they are all good.

[PanRonnie]

Just pulled the powerhead to change it to poppet cooling
You can see the sensor in the adapter
This is an lsu 4.9 which seem to be more sensitive than the lsu 4.2

[aj06bolt12r]

That's awesome that you all are getting them to live in this application! I may have to give it a try! What kind of AFR are you shooting for? About the same as a 4 stroke gas engine?

[Chaz]

Ronnie, where is that "trend" chart that shows the correlation between EGT and O2 movement. ???

[PanRonnie]

You would want both EGT and AFR
on the EGT screenshots you see the poppet engine have higher and more stable headtemps and EGT,s
generally and AFR around 12.5 part load and 11.5 to 12 for full load while keeping your EGT,s below 1200 prefferebly 1150

[aj06bolt12r]

Awesome thank you!

[David - WI]

The "problem" is that the sensors don't completely quit working when they get contaminated... they get less and less responsive until eventually they just produce a flat line. OEM automotive ECU's constantly check the voltage range & response time of the O2 sensors so they know when one is failing.

The one I have is from TechEdge in Australia, but we've mainly used it for dyno testing. https://wbo2.com/home/products.htm