Alex-Corsa, on Aug 2 2006, 12:50 PM, said:
And what should the indication of the thermomketer read and after how much time of work?
I mean should the sensor be in a "hotter" (than the crossover) place. ANd why is that the company suggest a heat sinker to drop temp from the sensor if it has to be in a hotter placed. And why are the sensors that come from the factory (in the closed loop bikes)are in the crossover?,or ?
This got me confused a bit.
Thank you both for the infos. I thought It has to be to the crossover. Anyways I have seen it at the end of the pipe in many bikes ,so I was wondering.
Slug's placement is about where I was hoping would work.
It is 'safer', for the life of the sensor, to put it in a cooler place, but the accuracy of the signal drops as one moves away from the head. Different WBO2 sensors have different temperature/placement recommendations...water cooled turbo charged engines could have a real problem if you get to close too the head, or too close to the turbo.
The accuracy also drops when you mix the right and left cylinder gasses in the crossover, ie. if the sensor is attached to the crossover, and one cylinder is too rich and one is too lean, what would the sensor read?
I think the extra trouble of getting a temperature reading before drilling and welding would be a good idea.
Here is what Innovate says (KEEP IN MIND DIFFERENT SENSORS WILL SPEC DIFFERENT OPERATING TEMPERATURE):
http://www.innovatem...support/faq.php
Quote
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).
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