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Old 12-24-2011, 01:15 AM
pura vida pura vida is offline
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Default wide band O2 sensor life

so anyone know how long an O2 sensor will live in the two stroke environment before fouling and failing?
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Old 12-24-2011, 09:00 AM
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Originally Posted by pura vida View Post
so anyone know how long an O2 sensor will live in the two stroke environment before fouling and failing?
I've heard from a couple different turbo builders that is not as big of a deal as some make it out to be.MAYBE have to replace the sensor once a year, most are saying the make it 2-3 years depending how much you ride.
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Old 12-24-2011, 09:26 AM
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I've never fouled one out and failed it - they typically either slow down or read on the lean side. At $70 a pop, it's cheap to have a spare. I'll be testing the oil resistance of mine this week as I' breaking my engine in with an O2 installed.
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Old 12-24-2011, 10:57 AM
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It really has to do with working temps and leaded fuele but. No turbo for me but mine is in the pipe just before the can. First one lasted more than a season but when I started running leaded race fuel it would toast it in about 4 rides. The Denso is suppose to be better than Bosch for leaded fuel so I am trying that one now. Working temps are listed at 900F so I found a bung extention that has a venturi type system so the actual sensor is not directly in the air stream. Hoping this will keep it cooler and not lead foul so quickly.
My buddy put his in the down pipe behind the turbo on his leaded race gas sled and his Bosch lasted three seasons.
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Old 12-24-2011, 12:58 PM
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Lead kills them really quick...and 100ll av gas has quite a large amount of lead in it, its only low lead compared to the old green av gas.
I use a/f guage as a test only..once its set up out she comes.

figure if you know (example) that at your perfect a/f ratio your egt is spot on 1250 wot long pull and your plugs read this way as long as the egt stays the same the a/f is a OK
This is a huge problem on car motors running leaded race fuel and o2 sensors.
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Old 12-24-2011, 02:06 PM
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thanks for the info. no turbo for me and just running pump gas. i'm considering the autotune setup from power commander. just wondering how long i could expect the sensor to last. 70 bucks a year is cheap maintenance once a year all things considered. and i know most don't run the sensor all the time but that is another discussion, see associated thread...

pv
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Old 12-24-2011, 06:37 PM
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This cant be right most race fuels are leaded? Silber can you chime in here?
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Old 12-24-2011, 07:36 PM
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4 rides was all i got with 3 gallons race per tank I ride a m/1000 and have 14.5/1 head pipe and y with ported cylinders i tune with out it now and see no need for it. but thats me
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Old 12-24-2011, 08:00 PM
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correct...try 100% leaded race, you will be lucky to get 1 good ride out of a sensor. this is why its a nightmare running leaded race fuel in a car using a O2 senson for any length of time.
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Old 12-25-2011, 12:29 AM
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Old 12-25-2011, 04:14 AM
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Old 12-25-2011, 11:34 AM
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Old 12-25-2011, 09:38 PM
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Old 12-26-2011, 11:24 AM
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Old 12-26-2011, 12:13 PM
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