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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Air Fuel Gauge 02 Sensor Lambda Sensor
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<blockquote data-quote="Cyborg" data-source="post: 107277" data-attributes="member: 3426"><p>The discussion about placement of the bung arose because of magnetoman’s experience with reversion causing his sensor to be exposed to interloping O2 molecules plus the caution in the installation instructions about not exceeding the heat limitation of the sensor. Having no idea what the EGT is in a Vincent engine I was trying to figure out how close I could get to the exhaust port or more importantly how far away I could from the tip of the muffler. I haven’t looked to see what valve overlap is on Gold Star cams compared to Vincent MK2, but no point in putting the bung too far from the port and end up chasing moonbeams. As for the problem, I think we’ve figured out that that EGT is not an issue. So all I need to do is weld it in at an angle (reasonably close to the exhaust port) that won’t allow moisture to collect in the sensor.</p><p></p><p>I by no means fully understand the reversion aspect of this, but after doing some reading, it would appear that I'm not alone, even among some professionals. Its interesting that it worked out in your situation and appreciate the info, but as I understand it... just because it worked for you doesn't necessarily mean it would work for me. Depending on valve overlap and muffler design, you might be able to get away with a location that in my case would require one of those bunsen valves.</p></blockquote><p></p>
[QUOTE="Cyborg, post: 107277, member: 3426"] The discussion about placement of the bung arose because of magnetoman’s experience with reversion causing his sensor to be exposed to interloping O2 molecules plus the caution in the installation instructions about not exceeding the heat limitation of the sensor. Having no idea what the EGT is in a Vincent engine I was trying to figure out how close I could get to the exhaust port or more importantly how far away I could from the tip of the muffler. I haven’t looked to see what valve overlap is on Gold Star cams compared to Vincent MK2, but no point in putting the bung too far from the port and end up chasing moonbeams. As for the problem, I think we’ve figured out that that EGT is not an issue. So all I need to do is weld it in at an angle (reasonably close to the exhaust port) that won’t allow moisture to collect in the sensor. I by no means fully understand the reversion aspect of this, but after doing some reading, it would appear that I'm not alone, even among some professionals. Its interesting that it worked out in your situation and appreciate the info, but as I understand it... just because it worked for you doesn't necessarily mean it would work for me. Depending on valve overlap and muffler design, you might be able to get away with a location that in my case would require one of those bunsen valves. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Air Fuel Gauge 02 Sensor Lambda Sensor
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